Surveyor Lunar Lander 1966-1968 (Boeing - NASA)

,m FINAL i,, ENGINEERING FO& REPORT ." SURVE YOR .EJE CTA , I "" II DE TE CTOR 185-1 MODEL ML Z56-I AND AND EJECTA SuR:VEYOR ,,t GROUND DETECTOR EQUIPMENT 260-1 SUPPORT MODEL ML -- .N67 1 3019 INASA CRIOR'r_l'XORAO NUi_lS_l ,J I ',' (C ) 0 """" 'I _ +, , GPO .PRICE CFSTI PRICE(S) $ $.___._-_. -. - R. D. H. D. Carden Rose Rosenberg Sassa .... "_' ,, : Hard copy (HC) Microfiche (MF) ' ff 653 July 65 _, ,' ," ® ;,;,f ," Prepared By MARSHALL LABORATOR_-ES 3530 _T.orranc9 Boulevard Torrance, California ..... -' \ ,'_ C_DDDARD "_\\. o For SPACE ' CENTER 0 FLIGHT _ " ---- ML/TN .Page ii 2300.55 : ABSTRACT The following is the Final Engineering Report on the Surveyor Ejecta Detector (ML 256-I g_ML 185oi) and the Ground Support Equipment (ML 260-i) for this experiment. This equipment was designed, developed and fabricated by Marshall Laboratories under National Aeronautics and Space Administration Contract No. NAS 5-3417. The objective of the experiment is to measure momentum, energy and direction of particles, close to the lunar surface, were built on an exposed rectangular plate. In general, these particles will be secondary Particles which are emitted from the lunar surface when a primary particle impacts. Goddard Space Flight Center personnel and Marshall Laboratories jointly designed the basic sensor plate° Goddard Space Flight Center was then responsible for supplying the thin film s and acoustic transducers for the sensor while Marshall Laboratories was responsible for fabrication of the sensor plate. Marshall Laboratories was also responsible for building the sensor electronics package (ML 256-I) and the electronics in the main body of the spacecraft (ML 185-1)o The Marshall Laboratories electronics packages I. performed the following functions: i Amplify the sensor signals and convert them into a binary form which is compatible with the spacecraft telemetry system. '_ Storage of data until a new impact occurs and -counting of acoustic signals and film signals. Supply,in-flightcalibration signals. Convert Spacecraft power _volt,'. _es. into various regulated 2. 3. 4. '. ., _' The electronic units were constructed of welded modules which were interconnected by means of a welded matrix. Soldered wires connected the matrices to connectors on the housings. Three complete _prototype units and ond sensor thermal ,. ._ j unit were build. Two GSE I. Z. units were builtwith the following functions: and signals. Simulate all spacecraft power Provide simulated impact signals to sensors. / ML/TN 2300.55 Page iii 3. _f L/, Provide Be visual display of experiment outputs_ ieS. 4. Wherever soldered capable modules employed o£ operating on external,batter, possible, welded interconnections and welded matrices were used with between mat_'ices and other components. In addition, three battery operated calibration units Were supplied. These units can be plugged into the sensor electronics when the experiment is on the spacecraft and supply five additional calibration signals to the experiment. All units were successfully built, tested and calibrated. data is included in the report. Test /- ML/TN Z300.55 Page vi TABLE OF CONTENTS Page INTI_ODUCTION FUNDAMENTALS EXPE TESTS .................. .................. ............. ............. TEST RESULTS ....... I 1 4_ 41 48 55 :/ RIIVIENT DESCRIPTION AND TEST RESULTS AND MECHANICAL APPENDIX New APPENDIX DESIGN A ....................... Modules Used in the Experiment B .................... Vsed in the Ground Support 78 New Modules E quipm ent APPENDIX C .................... 82 Master Drawing List Opera,ti_agManual Te st Specifications "'.\, ML/TN Page v Z300.55 ILL US T I_&T IONS Figure 1 2 3 4 Ejecta Ejecta Schematic Detector Detector Experiment Blivets Lunar and Covers Ejecta and Detector Ground Support Page 5 6 8 Z4 Diagram Ejecta Detector E quipm e nt Schematic Mic Film Expe½.iri_ent 5 6 7 8a 8b 9a 9b 10a 10b II IZ .Diagram Micrometeorite Data_ SNI Data, SNI SN3 SN4 & 4 Z5 4Z 43 44a 44b .... J Pulse Height Analysis Pulse Height Analysis Pulse Heigh_ Microphone Analysis Data, Microphone, Channel Calibration Graph, Data, Film A SN4 B SN4 Pulse Height Analysis Film A Channel 45a 45b 46a 46b 49 50 Calibration Graph, Data, Film Pulse Height Analysis Film B Channel Calibration Graph, Functions Overall Transfer Temperature Probe Calibration Curves ! I ML/TN 2300.55 Page 1. INTRODUCTION This final engineering of NAS 5-3417 for the Surveyor report is submitted in partial fulfillment designed Flight Center. an Ejecta Detector which was for the Goddard Space and built by Marshall Laboratories The Ejecta De'.ector is a scientificinstrument integral part vf the Surveyor on the surface of the moon. Lander which will become Spacecraft which will be landed to The objectives of the contract were design, fabricate and test four units of electronic instrumentation for dust particle detection; to design, fabricate and test two units of Ground Support Equipment; and design, fabricate and test three Finally, to give support necessary on the battery operated calibrate units. to integrate electronic units, and to provide documentation above units. This report discasses the design philosophy and presents the detailed engineering Support Equipment. analysis of the Ejecta Detector and Ground the test results of the flightqualified Itdiscusses prototype instruments, ' necessary associated for a thorough and includes those illustrations and documents understanding equipment. of the instrument and its ground support JI FUNDAMENTALS This of the particles instrument of mass is designed from to measure the lunar the characteristics as a result space. upon than impact the These of a ejected surface of primary pieces primary meteroid surface are bombardment material expected from which interplanetary are ejected numerous, of lunar particle to be more J, MLITN Z300.5 Page 2. f I i I ] l I primary particles and have ballistic trajectories which, 'it is postulated, particles near the surface q will cause a significant flux of secondary of the moon. -: i • i extreme Since the mass, velocity, and number of these particles is of _.mportance in considerations of future lunar landings, and of it is apparent that the general interest to the scientific community, first instrument measure landing on the moon will provide an opportunity to scientific statisticson these particle fluxes and accumulate their abundance and significance in the lunar environment. The instrument sensor consists of two different types of detectors, an acoustical sensor which the momentum The has an output proportional to, or related tO, of the particle, and a thin f{i..napacitor detector. c "_- acoustical detector consists of a planar metallic plate ,_hich to the surface of the moon. Impacts 'on tlteplate will be oriented normal will result in acoustical transmissions acoustic transducer mounted which will be sensed by a On both sides in the center of the plate. of the acoustical detector plate are deposited thin filn%capacitors. The impinging particle _omentarily Shorts both sides of the capacitors the together causing a reduction in the potential difference across plates of the capacitors and a redistribution of the charge which issensed in the input amplifier and yields information _article energy, The momentary regarding .the i flow of charge through the shorted part of the capacitor causes,,the short to burn-out immediately thereby enabling the sensor totrecelve new _mpacts,. The exact relationships .between the particle mass, sensors velocity or momentum are determined forthe, particular for each instrun%ent one of which .. _ used in this experiment at, by hypervelocity tes'tsusing particle accelerators, is located at Ooddard Space Flight Center. The directional sensors are the capacitors which are deposited on each side of the acoustical The direction from _,li_ch the particle plate, and electricallF isolated. ML/TN 2300.55 Page 3. h_s originated is sensed hit, by means by identificationof:which side of the plate was of the two capacitor sensors. The processing of the signals from the acoustical sensor and two cap_ei[tors is provided in an electronics assembly under the Sensors located directly and in an inboard electronics unit located in Cor_.spacecraft. The processing of the the partrr,_nt_Bwithin the Surveyor two type_ of signals include a pulse height analysis to determine and energy parameters, momentum_ and a counting of particle events as well as identificationof which of the capacitor sensors was activated w thereby determining the direction of the impact. The data collected is stored in binary form and immediately transmitted in a serial readout pattern to the spacecraft telemetry for every change which may system. Thus a readout occurs in the status of the data. The accurnttlationof data since the readout data rates of the occur during a readout is also provided, be significant compared to the expected interval may ejecta flux. This accumulation .... of data after a readout has been initiated consists of the counting of particles which have been sensed by the acoustical detector and the counting of particles which by the two e_.pacitor detectors. accumulators meteor These have been sensed Corals are stored in separate of the probability that the bursts of many height readout analysis records _rnpacts on the all only. and are provided because flux will be in the form of concentrated The initiates experiment the performs a pulse the ., at O_._,time. ,,. ,eVe,nt'which " readout, and._during subseq_,ent impacts _n the accumulation portion of the experiment The other fanctions of the electronics are to provide operating power to the electronics for from in-flight the spacecraft central power :'j supply, cali- to provide brat!on peated ]I a means or on-the-surface-of_;.the-moon to provide receipt . of the sensor data tran_..mission spscecraft channels, upon telemetry a means for '_ sending a _refrom film of a readout and c!_mmand the ;'i central, system, provide, a capacitor ,L ML/TN 2300.55 P_ge 4. clear caused sensor signal to the capacitor _ensors s_nsors, which in the has not event a particle has This a short short in these may be self-healed. from the the the "burned-out" system which by a command will thereby provide slaking central necessary sensor spacecraft to burn operable out telemetry the shorted current capacitor capacitor again. The due but the to either once pulse initiation a capacitor a signal of a readout sensor has occurred to only height been upon signal impact of a particle sensor made can be signal, or a acoustical has impact. thereby the been such height that provision that initial and from to restrict analysis pulse have This the mass restriction and sensor sensors. particle is velocity will insures parameters be on:the the which analysis derived derived and acoustical the capacitor same particle solution for as that mass from Simultaneous possible. parameters velocity o,1 a single solution for the In the event that simultaneous individual isnot necessary, this restriction insures a redundancy inthe analysis which may prove to be valuable in assessLug the confidence For brevity in the rest of this "mic" or microphone level of the results of this experiment. discussions, the acoustical sensor will be termed and the capacitor sensors will be termed "film". E XPERIMENT DESCRIPTION The in its final photographs flight are of Figures 1 and In Figure 3 show 1, the the sensor Ejecta plate Detector and into the two configuration. in the ar_ rear. The microphone sections The "and capacitor _vhich sensor supports is divided the the which separated by a web microphone. sensor plate left. electronics supports housing two Cannon /' is located connectore hnrnediately which are under jutting out to the ML/TN 23O0+ 55 Page 5. . ML/TN 2300.55 Page 6. ML/TN Page 7. 2.300.55 In the of the electronics foreground digital is circuitry the inboard for In the electronics the package data from two containing the units sensor are most processing spacecraft Since package. foot length rays these separated to by a seven the direct electronics from those of Cable. the sensor plate is exposed in the sensor of the sun, the temperat/_re extremes and on the sensor of iV2 inboard plate is expected which to be quite different con- electronics is in a temperature trolled chamber. The photograph in Figure The covers g shows being an exploded removed, view of the to the rear power and trans-the inboar.d electronics. _he power converter command missionto spacecraft connector pulse supply exposing electronics which contains the low voltage coding circuitry before and regulators interfaces and the telemetry required to condition the signals The Connector the central cable spacecraft. at the topis connector and that on the side is the interconnecting (Digital) which contains the to the housing in the foreground height analyzer The circ{iitry as well as the data storag e and at the top of this housing of the three is from accumulation registers. unit. The connector the sensor the sensor in Here, schernat_.c diagram the digital housing (ML Schematic units discussed: electronics, Figure Sheet To 3. and the p_v er supply No. 51114 sheets are shown 1 and 2) Diagram 1 is'_the sensor electronics and. Sheet 2 is the inboard electronics; supply the • the left is the digital portion, The connector and to the right is the power portion. spacecraft on the far right is the interface Detector. between and the Ejecta First, a very let us follow the signal flow through so that th e readermay group, the two diagrams as to the in brief manner, Of each ma_or be oriented functions grams we had and as to the locations first the acoustical you see, within the diadetector, which of each decided function. to term Consider "mic". As the microphone input is j, ,,'t ;>/"- " .. ML/TN 2300.55 Page 10. on the directed upper far left of the first sheet of the schematic of modules diagram and is to a four-stage amplifier consisting Z1 through .. Z5 and finally a conditioning emitter follower QI. ampl4,fierwhich bandpass around The output of this. has the individual stages with gains of i0 each and a limits the frequency response to a 10 KC band The signal, filterwhich I00 KC, the natural frequency of the crystal sensor. output signal of the composite_arnplifier is called the microphone and ifwe ". go to the next sheet you will find it entering on Pin 1 of the and being applied tO a detector. left hand connector, ' _This detector is a differentialfeedback detector. The output signal - of the detector eventually follows the peak of the incoming a modulated carrier of 1O0 KC - the envelope reaching peak within i0 cycles of the carrier. ," .., ' ' The output of the detector is applied to the to the right of the detector, gain of two amplifier, which is shown and from the gain of ,.tw_. o amplifiers the signals are threshold detected stages Z45 and Z44, These comparatOrs in the differentialcornparator detect if the signal is above or below threshold and thus control and gate, Z43, which gates astable mutlivibrator which Z4Z to generate the pulse height tO pulse count conversion Z27, and ZZ6. The is stored in acctu_aulator ZZ8, of pulses stored in this accun_The status'of the accumulator greater the number ulatorthe ,. '" greater ,isthe height of the pulse. is available on lines to the immediate binaries and is the data made iabeled MPHA right of the th¢'eeaccumulator I, 2, and 4. ' This data is then which will available to the r>ight .mo_t 'portionof the schema%it _sarnple the d-c levels and transmit them "'-. telemetry sequence progresses, as-ones or zeroes as the '.._ ., , The J sequence of readout is determined by the sequencer counter Z13 through - ZlT. and the dual nand and dua'iparallel nand gates ZZ readout word is applied the levels of the readout to the word to . through Z1 1.. The resulting serial SCO driver, Z l, which conditions PRECEDING PAGFJBLANK NOT FILtCi f;, ML/TN 2300.55 Page 1i. he compatible of this module a square wave When with the spacecraft teli_metry circuits. to _he telemetry is normally, The output of data, in the absence having a one hundred-cycle-per-second a code address frequency. 001 is transmitted data is present in the system, :in a return-to zero fashion whereby bits are transmitted. code address clock which is 19. the pulse height and accumulator of bits transmitted including The total number The i00 cps signal originates at the 106:-cps ZZ4. This clock serves and a continuous -< is an astable multivibrator, waveform the dual function of telemetry reset generator when generator, data is not present. The clock is used to strobe the condition of gates Z2 through The from Ell during the readout sequence. other input to these gates are the signal data which are available the bistable multivibrators in the digitalportion,of which only the mic PI-IA storage binaries have been discussed. ]Steturnto Sheet i, the sensor electronics schematic, and trace , the film s_gnals as they pass through the electronics to the telemetry system. On the lefthad side of the schematic B being applied to separate modules we see the inputs Film Z? and Z8. These A and Film are high-gain amplifiers with a gain of approximately amplify signals to usable levels at low impedances transmitted on the cable as the Film 50 db which can be go to which Signals A and B. Ifwe Sheet Z we will see these signals appearing of the schematic as Film A and Film B. to the lefthand portion lines are applied to constitute the beginThe Z59 These differentialfeedback detectors Z58 and Z59 which ning of the A and'B channels of the film pulse height analyzer. outputs of the detectors are respectively applied to comparators and Z67. These comparators control and gates Z6Z and Z64 which, Z63 which performs the pulse in turn, gate the clock pulse generator height to time conversion. The data thus accumulated in the film through pulse height analyzer is stored in bistable multivibrators Z3Z Z3_. The outputs, labeled PHA i through 4, are d,c levels which " L are sampled by the telemetry conditioninG section. ML/TN 2300.55 Page 1 Z. The by the The dual which triggers to allow Since readout of da, ta to the of either telemetry or system one can of the be initiated two films. Z70, line line Z19 Zll. occurrence a microphone of these as its signals output the The occurrence nand gate of either which has is sensed beginning Beginning the chain inputs Z5, by the Z2, by module of readout of Readout dual nand gate initiates bistable clock the telemetry multivibrator pulses Z11 to strob'e dual cycle. ZZ0 to enable the nand gates gate Z2 through from the Z2 through hand chain, is have bistable which countdown multivibrator will chain. output countdown enabled Z1 through determined module the nand gate of this be completely This gate nand from status arrangement, which the data and Zll in, to the which functions form SCO is part so that _ NO_ Divider. of Z18 new pulse When are d_rected 20 circuit circuit the'readout detects height this data is completed, fact can and be resets a detect various received. If an 'In-flight craft telemetry system, Calibrate the Command command is signal generated will within the to the space- be routed command interface module Z77 and from there to the sensor electhas tronics section where begun. command the in-flightcalibrate command Command sequence Ifthe spacecraft generates a Readout is directed to module ZZ0 in the same signal, the ZZ3 and modules manner ZZS will set bistable multivibrator sequence that the beginning of readout of a particle impacting system generates Z78 which either is initiatedby the occurrence Ifthe sensor telemetry of the sensors. j a Clear generates the Command, this command is directed to module a pulse which needed is also sent to the sensor electronics section where is generated. current to clear the film sensor The power for the detector electronics is derived from a +29v Z81, regulated d-c source available in the spacecraft through a module a d-c to a-c invertor which is based on a design that originated with J 0 L. Jensen in an article "An Improved . Squarewave Oscillator Circuit" \ \ ML/TN 2300.55 Page 13. l- ,c in the IRE transactions on Circuit Theory, 1957. This convert C.T. -4, 276-277 Sept. r has an oscillator transformer T2o T1 and a voltage conversion transformer transformer occurs'on The output of the voltage conversion windings from which the +i z, four secondary +6, +3 and -7 volts are generated. the +6 volts, synchronous In the case of the +3 volts and % The outputs rectifiers are use4 and in the case of the 1Z and -7 volts feedback differential regulator's are used. of each of the detector lines are filtered by the meamsof tantalum capacitors and are further filtered in critical areas hence, noise pickup is minimized throughout the system. Incorporated some chance in this unit is a fail-safesystem whereby if by the films become noisy and generate pulses of sufficient erractically, this rapid data rate is starting a readout. Z74 and Z75 amplitude sensed, to trigger the system and the films are disable_dfrom in modules This is accomplished Z74 and Z75 and Z76. constitute an integrating trigger circuit which the film and if the data rate exceeds senses the data rate of a preset value,the initiationof _ readout by the films is disabled through gate Z76o We Detector. have now very rapidly scanned the high-lights of the Ejecta go back and examine each portion of the circuitry We shall begin We Let us now and discuss, in some with the microphone shall then examine detail, the operation involved. signal as it enters the sensor electronics. the film signals as they enter the sensor electronics We shall see the origin of the whereby readouts are and are converted to digital form. Beginning of Readout initiated. We data to the pulse and the mechanism shall examine in serial in detail the method form and fin_tly sequences we of presenting the shall investigate form the peripherial telemetry s calibration dat_ the varicu part of this and command which processing. I ML/TN Z300.55 Page 14. / Refer to sheet one of the schematic microphone signal is a i00 KC modulated diagram envelope. of Figure 3. The The first peak carrier. of this signal will occul, between 3 and i0 pex.iods of the I00 KC the microphone Since reflections are expected from distance from the microphone due to the finite to the edges, or discontinuities in the plate, and since it is undesirable to peak detect on these reflections, itis necessary first sampling i to inhibit the detector from period which is determined further peaking after the to be 100 microseconds, The. or 10 periods, the inhibit being effected in the detector circuit. inhibitlasts for 30 milliseconds and-holdmodule, W4168, and occurs _ " by the action of the inhibit- Z47, which in effectively shorts the emitters detector to B+, of the differentialamplifier the differentialfeedback thereby back biasing the differentialfeedback detecto r. Schematics of the detector and the inhibit-and-hold module A. Z49. are given in Appendlx one shot, The inhibiting action is initiated by the 30 millisecond This one shot is triggered by the trailing edge of one shot ZS0 immediately after the comparator, which is biased at ,which occurs 250 millivolts, reaches threshold. When the comparator changes :_ate, due to the fact that the signal Pin IZ of Z44 has reached threshold, the output,of:the comparator, triggers one shot Z50. A schematic' diagram Ao of the comparatormodule detector and comparator environments expected show Z45 and Z44 is a!so given in Appendix circuits were The developed to withstand the extreme in the lunar landing. them Tests have been run on these circuits which of temperature to be stable within a millivolt under extremes ranges available. The with wide dynamic power circuits consume Very little and will operate at reasonably high speeds. The detector is a closed-loop making point amplifier with a diode rectifier in the feedback loop The output is taken off the feedback the output. used Across the the signal output peaks. is the feedback unilateral. such that of. the input 047 _farad will follow is a capacitor which to smooth 19IL/TN 2300.55 Page 15. At the time of the incidence of the signal, the resistors 1%7 and 1%16 is not returned to ground due to the holding action of module Z47. This action is initiatedby the output of Z50, Pin 6, the I00 i1second one shot, thereby the holding interval - the interval in which the capacitor is maintaining At the end of I00 _seconds its charg, , or adding to it, is I00 _seconds. interval, th_ holding signal is released and the resistor 1%7 and 1%16 are returned to ground thereby discharging the capacitor. The rate of discharge is _zseconds time constant:, and provides the logarithmic version. The time base for the pulse height to time conthe time at which the signal to the time at which time difference between originally passed the threshold on the comparator the decaying pulse again passes threshold is the time allowed for the of the pulse height analyzer. generation of clock pulses in the accumulator The gain of 2 amplifier is used to enable a wide dynamic range on the comparator reasonable while limiting the detector dynanlic range to quite of charge necessary of the detector. The figures, thereby limiting the amount for the capacitor and hence the current demand comparator thresholdis established by resistors 1%8 and 1%9_ nominally range of the comparator number in this application mS0 millivolts. is approximately The dynamic Z0 to I. The maximum of clock pulses generated in this circuit is 7 after which the detector _nd amplifiers preceeding the detector saturate so that the maximum ranges is a 111 and the mic clock pulses occurs when PHA count for expected particle The initiationof storage binaries. the I00 microsecond one shot returns tO its t, initialstate after a delay of I00 }_seconds. At this time the comparator pulse to output Pin 7 Z44 is up and allows this positive-going-one-shot start the clock. The uncertainties due to pulse shape in the microphone starts on a very signal have been eliminated in that the clock a]ways rapid rising edge of the I00 _second one shot. The compa_'ator, returning to its original state after the time decay in the detector, shuts the clock off and therefore the pulse height pulse/count conversion is accomplished. The and gate Z43 establishes the inhibitingof the ML/TN 2300.55 Page 16. puJse height analyzer provided no n_ic hit has occurred, the analyzer after one hit has occurred. or inhibits This action is accomplished through gates Z52 and through the one shot Z53 and bistable multivibrator Z51. If a readout ha.sbeen started by the film the data reset setting bistable multiv[brator Z51 it al_o line will be actuated immediately to the enable state 3 and 5 going to a 1 enabling and gate z43. accuates one shot Z53 which inserts a negative going signal on Nand gates Z52. The output of this Rand gate is the inhibit'.ng lead and if data in the comparator Z44 is stillUp and has not been processing the analyzer, the trailing edge of the one shot will get through the Rand gate and trigger the bistable multivibrator to inhibit further data I ' analysis after the one hundred is in-process in the microphone _second interval of Z53. If data pulse height analyzer. If data is in-process in the PHA NAND gate Z52 will be inhibited, Pin 8, therefore the action of one shot Z53 is also inh'_bited. Z53, the output of the one shot, will return to the one state. ,._t the conclusion of the data analysis tL_ comparator state. When output will also return to the one gate ZSZ are bistable multi- both inputs to one half of the dual NAND When this occurs, The ones, its output will go to a zero. vibrator, Z51 will be set to the inhibitmode. channel pulse height analysis requires is then inhibited through the action of gate Z 43 which all of its inputs to be up in order to gate the clock pulses and begin height %nalysis. Thus we have seen that the microphone signal occurs of first, or itis allowed within I00 microseconds either an A or B film. These after the o_curance signals start the beginning of readout waiting period for sampling pulse, which initiatesthe I00 microsecond the microphone data. Let us now trace the _m._at_onof film data from • ,_, • the sensors through the film pulse height analysis. schematic diagram, Return to sheet one of the ML/TN 2300.55 Page 17. schematics of which are shown in Appendix A. These amplifiers have a 50 db gain and a;e especially designed to interface "withthe capacitor sensors. They are operational type amplifiers which have summing be resi stors at the input, so that calibration signals to this channel may easily inserted. The three inputs to this amplifier consist of the film support signals, the in-flightcalibrate signals, and finallythe ground equipment channels signals wh{ch are used to run calibration curves on the film during manufacture and tests. The amplifier was designed as a three-stage inverting circuit, with two individual feedback loops used to achieve low input impedance, the same time, maintaining i low output impedance, and at a large gain per stage in the individual shunt feedback transistors. The input stage of this amplifier contains chosen so that the feedback with circuit parameters resistance, or exactly equivalent Miller effect resistance change compensates under temperature the hfe change with temperature, thereby enabling the gain to remain constant over the expected -55°C to +I00°C temperature range. The second stage is a conventional high-impedance, input, low impedance output NPN and PNP pair, noninverting, designed to drive efficientlya long length of coaxial cable. tkne of this amplifier is less than 1/2 nlicrosecond The response to the leading edge, while the trailing edge is sufficientlycoupled through the stage to prevent serious under-shoot. of the s__gnalis important The under-shoot of the trailing edge a ifthe trailing edge is to be used to form pulse height analysis, since this will result in a consequent which may over-shoot be detected in later stages as an addition_l film pulse data. giving erroneous It is therefore in this amplifier by careful the output edge. network design that exact parameters after were one chosen so that is critically Also incorporated changes damped undershoot of the trailing feedback in this the b amplifier • is a biased-diode amplifier which gain of the one volt. if the signal at the output of the :_a-nplifier exceeds ML/TN 2300.55 Page 18. This gain reduction reduces succeeding required dynamic range of the stages so that conventional power supply voltages may both the not be exceeded. The output of the capacitor amplifiers were film A and film B channels is applied by coaxial cable to the input of the digitalsection which is shown on sheet two of the schematic diagram. We have have height the seen seen how the mic has signal been analysis placed is performed on the microphone and we pulse how the that requirement this signal hit. analyzer occur within the same 100 microseconds case where the after microphone film of occurancr; has ' of a film occured they first_ occur We now take put the signal and we within restriction after the on the initiation signals-that 1O0 microseconds a Beginning of Readout pulse by the microphone. We have seen that the m_crophone one shot, Z50 Pin 6 going to a one state actuated dual NAND was applied ZlZ which when gate Z70, the output of which down initiatedthe beginning of coming readout. In parallel with the output Pin 12, Z70 are the outputs Pin IZ an Nor circuit. Therefore the inputs to Z76 and 6 of Z76 which together with Z70 form either film channel which has been impacted caused either 5 and 3, or 9 and I0, to go to a one, initiatinga Beginning of Readout , ' pulse. We see that the other output Pin 8 of ZB0, the microgate Z68 in phone one shot is applied to Pin 7 and 9 of dual NAND the film section. the NAND Since this output of the one shot is negative going, gate will be activated, thereby its output going to a zero, when There is also a requirement on this NAND Pin 9 and 7 go to a one. gate that Pin I0 and ].lbe at a 1 before a signal output on Pin IZ is obtained. This insures that a 100 microsecondwaiting can appear from this NANDo period has Since this output elapsed before an outp_ resets bistable multivibrators Z61 and Z65 to inhibitthe film channel from the beginning for the rest of the read out, this inhib'lting delayed is of a mic pulse by I00 microseconds, or itis delayed until film comA zero on NAND gate parators are returned to their quiesent state. ", , ,, ML/TN Z300.55 Page 19. Z68 Pins 2 and 5 or 4 and 8'cause Pin 6 of the gate to go up and therefore Pin 10 and II of dual NAND gate to go down. When these Pins return to their upstate, the outpu= on Pin !Z wfl! go to zero causing a reset to occur on bistable multivibrators Z61 and Z65,NAND gates Z70 and Z68, then, reset the fi]rnchannel to the inhibit state either after analysis of the film channels, of the mic has occurred first. or after 100 mic._,_second interval The output of Pin 6 the dual NAND the two comparators Z40, Z39 and Z38. gate Z which is derived fro.n binaries Z41, is supplied to the film accumulator Since this happens when either comparator actuated, the total count in the film channel is recorded. the accumulation on will not Be dependent Notice that on the status of the inhibits _ ,pulse height analyzer. The reseting of all the storage binaries in the data chain is a, cco_plished ,,r ',, at the beginning ofreadout. 0 state with the.i_r_inimat I, This insures that all bits that noise could ,will be at the probability occur to disturb the data prL:.... _'oreadout.. The identificationof which the twvobi_directional films was impacted, channel A or channel B is stored in bistable mul'tivibrators Z36 and 237. NAND They are toggled at the end of analysis when the parallel gate returns to its initialstate. At this time one of the bistable 261 or Z65 has a one and the other has a zero. to the stearing inputs of the film ident.ification These mul_ivibrators, outputs are applied binaries Z36 and Z37. i We have now seen how the film and microphon- I :signalshave traversed analyzed. and in the through their amplification stages and have been pulse height We have seen how the events in the microphone detectors have been recorded detector two £ihn in accumulators / '_LIm J ': • : ML/TN 2300.55 Page 20_ r ! and how film identificati6nhas been accomplished. We will now consider the ancillary cii'cuitswhich electronics. ,i // ,1 are located in this part of the The noisy film circuit, modules A 274 and Z75, and gate Ifwe were Z76, 270 and Z76 generate the beginning of readout. necessarily to inhiS_tthe film channels we would We do it at Z76. require Pin 7, 4, ii and 8 to be up before the initiationof readout by a film hit. This gate is controlled by trigger the films become noisy. can be accomplished circuit 275 which will be activated when 2 i i . i : 1 Trigger circuit Z75 is a positive-feedback circuit which is ini_iated_byan integrator Z74. •The is O1% Output of the cemparators. input to this integrator circuit The integrator time constant exceeds a preset is such that ifthe data rate in the two comparators level, the trigger circm[t Z75 generates the required zero at Z76. ! ! i t .i i I i _! ! Ifwe the signal return to sheet one of the schematic, calibration mode is initiated. we may that follow the as the We see calibration signal forms a positive going pulse :which is applied to dual parallel NAND gates Ell and ZlZ. The selection of which of these gates is actuated by this p_Ise is made Z13 which is toggeled by this same one shot. by bistable multivibrator Alternate gates will be The output of ZII module 7.16 and which are form Z12; Zi7. generate capable tlie input selected with the application of calibrate pulses. -. (Pins outputs The : " _ levels mic for 6 and Pins and lg) are 12 and applied to Z18, film the mic calibrate are These _, alternately voltage calibrate 6 go to the modules dividers fi.lm calibrate the different modules channels. levels calibrating two modules which of generating sampled, levels of thelpulses to the mic calibrate pulses is determined and film channels. The duration of these by the duration of the one sh0_ pulse;" _ : the leading edge is u_lized in the calibration. ,J { ,*? -,, t t, 'f _l ,, ,, ML/TN Page 21. 2300.55 In addition,to the mic logic, the sensor and {s a closed element made have electronics sensing and film amplifiers contains the heater and the calibrate amplifier, ZI5 Io0p circuit using I_T4 and a 1 watt heater studies recently ; supplied by _collector current spacecraft in Q3. Thermal on the surveyor cast some doubt and the micrometeorite of heating. To This experiment module does as to the need not appear section probe, in the final flight configuration. we See I_T3 which through which the upper right hand temp6rature, 5 ma of the drawing a sensistor is the spacecraft a constant current probe is maintained. We have now seen how have the acoustical been amplified, sensor signals as wel! as the capacitor signals detected and analyzed in the pulse height analyzers, been recorded such in accumulators, as the noisy been and how andthe the totalizing of this flux has job. of the peripheri_l The calibration and the uppe r section of a particle channels_ circuits film trigger circuits. circuits have utilized in the sensor We have seen electronics of the inboard e-]ectrom_s. irnpa.ct, W_ich triggers that the occurance or the-film to appear a new the microphone "channel pulse ..... :begins the readout " of Readout line. A by causing a negative _n the Beginning state in bistable the sequencer, into -, signal on this line establisheg which enables NAND gate Z19 The The multivibrators ./.-- -_. Z20 to allow modules 1 through 5, to begin counting. ZII. sequencer is coded /j / l i" the data NAND the sequencer With gates Z2 through counts of i, 2 and 3 in " / chain transmit a 001 at the output of the experiment. the occurance !] of a 4:, the _¢irstdata bit is transn%itted the clock The pulse and so on. is allowed sampled coding J A one is,_£rai_:S'mitted when to strobe ,J orig!.nating at Z24 gate which flip flops. the gates The will be The the coding gates. u particular ..;" is determined by the status of the sequencer which allows of the gates is binary/decim-al • in the order consists : of mic to be sampled out 3 of their ;.ntended readout. pulse-height analysis, data to be read accumulation, 3 bits, mic -'bits,film pulseheight identification, Z bits. analysis 4 bits, film accumulatiou, 4 bits, filr_1 '3 C' < ML/TN 23:00.55 Page 22. "; • _ of We are to return to the enabling of gate Z19 through the action a one, we see that the 4, 5 and 8 leads examine the remaining input, -- output of Z20 becoming at that gate are brought to a I, anciifwe Pin 3, we see that it comes on the trailing from edge the i00 microsecond clock strobe pulse, one shot which therefore, ..... is actuated : .. • : "' ; of the the toggeling of _he sequencer by this NAND gate ok v,u_zchthe output "- _" Data is .Pin 6, will occur on the trailing edge o_ the strobe pulse. is sampled and the sequencer • .f t0ggeled when bistable multivibrators data is which is associ- Z20 output iS Q in the one state, which ready. Half of the gate, Z19, indicates that new part of a logic ne_work ated with half-or ZJ 7, the output being Pin lZ, constitutes the microphone accumulator accumulator i during inhibit..These two gates sense when the rnierop.!1one is being sample4; and prevents any further accumulation Data is accepted inthe this particular interval of the readout. except when accumulators the data is being salnpled,:this accumulator ga.teZ52, in the upper housing, to inhibit inhibit is applied tO NAND the microphone f< accuno.ui_ior. ]>Towif we return to.gate ZI8, -we see that the output Pin , q£ th_atgate supplies a pulse which 6, 3, 4, 5 and 8 of Z18 form 6 resets the readout binary Z20. a det:ect 20 circuit which detects J<-Pin the end of readout and supplies a reset pulse to multivibrator A20. , -i " i _Now if"_veexamine output the Pin 12 output of Z18, we are 7 9, 10- and 11 Pin see that (:heinput associ7 comes from _ of the ate d wi'_h this enabling flipfiop ZZ0 which will normally be up when the flipfl0p is this the in its quiscent condition, therefore, with no readout occur_ng, gate is enabled and is strobe by the same-one shot that occurs-on trailing end of the clock pulse at Z21. stantly activated when no "data is presei_t The output of this gate is conaud as we see this_ontp_ so that no - _ ....... is used to reset the bistable _ultivibza_or_--c_tinuously (j noise can enter -and-d{st-rub the _tatus of tl ;so bits, so that we are always assured of ha_i_g a reset condi__ion-i_ the binaries at the beginning of the readouts i " / ML/TN 2300.55 Page 23. GROUND SUPPORT EQUIPMENT Th_ g_our_d support equipment is a portable test set which with DC power, simulated for the. S,_v_yor Ejecta Detector .... J .... supplies the ejector detector expg_r&_r_nt impact .f s_imuli, telemetr_y_6mmands display. and provides the experiment with a visual readb_ The unitis _ho_sed in alurninurn case which is extremely and may eaS_{iybe transported to various test locations. which The rugged readout o_the data is in nunieric form input selection. The input can be easily correlated with by the use of array of selection is made lighted push button switches in conjunction with precision vernier 'potentiometers. volt AC The unit may be powered from i a conventional 117 Ifnixie readout may still 60 cps, source or battery power may be used. is desired during battery operation, this portion of the GSE be AC powered. Otherwise an oscilloscope readout must be used. The GSE is shown with the Ejecta Detector in Figure 4. The system The electrical schematic schematically and Commands; is s_h_o_._-nP'iguze 5, in is divided into four groups; they are: Sheet 2, Switch and Meter Converter. Sheet I, Digital Readout Circu_.ts;Sheet 3, Sensor ;: Stimulus; and Sheet 4, Power .... The Digital Readout the circuits necessary and Command section of the system bit rei deut wozd contains for storing the!9 and driving-to generate the n_xie d_nIovs.._,.:, a_' -contains those circuits necessary , an,___=u the telerp_etrycommands. We shall assume that the e_xperiment has received a hit and We shall follow the scq_%ence:of'_ On the lefthand side of the -- begins to transmit a 001 code,word. events which lead s_to a readout display. ...... _c.Aematic (Sheet I) we see the data input and the experh_aent clock i ,, - _ ML/TN Z300.55 Page Z4. • f .... ML/TN 2300.55 Page 29. brought into the GSE. l_emember in the write up of the system changes that the data at the output of the experiment on the positive leading to have a one of data it The clock is edge of the clock pulse, so that ifwe were wculd occur at the time of the positive clock pulse. applied through an inverter Z9 to one shot ZI0 edge of the clock the one shot will be triggered. is a positive-going signal applied to ZII. ZII, so that on the positi,._ The output ZI0 a one shot, will trigger delay. We now is on the trailing edge of ZI0 after a three millisecond have generated a 200 microsecond positive-going the :xperiment. I and to the toggle register is driven and occurs pulse at the output of Z11 which on the leading edge of the clock pulse from This positive going pulse is applied to gate Z12 inputs from of shift the data register line Z3, which Z4 and consists Z5o of the This shift incoming data and the.7.Ainverted ^"*....Pin 6. ....... _u_ occurring The delayed negative transition or sanlpling pulse for the incoming %_e see that gate at Pin 6, ZII acts as the toggling ZS. the three-bit shift register, Z3, Z4, It samples data which is continuously applied to this register. Z1 is coded to be conditioned when therefore, its output will come J of the 200 microsecond a 001 _:xistsin the shift register; at the time of the trailing e'dge That is, the time when status-001. the shift down pulse at Zll. to the new register has just changed multivibrator At this time bistable This Z2 is set, so that the output, Pin 5, goes to a one. is also driven from output lead is the other input to gate Z1 2 which the Z00 microsecond _ pulse. Since that pulse had just terminated a one status, by the ti_1:_u_e bistable rnultivibrators ZZ had assumed the El2 gate will not be enabled untilthe next positive going edge of the experiment clock pulse occurs, and 3 rns later this gate will be conof the input to driver ZI3. ditioned to cause a negative transition This driver will generate the toggling 'or sampling pulse on the main shift register Z8, sampling ZZ0, Z21 through Z34. Therefore, we see that the of the principle shiftregister Z8, Z20 through Z24 does not occur until after the code address 001 has been registered in the will ancillary shift register Z3 through ZS; at this. tlme, the system D ING_PAGF_SBNK NOT LA P,_Ec_. FILA,'_'-" I- I ML/TN 2300.55 Page 3 0. wait for the next positive clock pulse from milliseconds the experiment, and 3 later, will generate the sampling The sampling pulse will occur pulse for the main apprOxh_aately in the a one should be shift register. middle of the positive-going half of the clock when experiment data. present in the RZ This principal register will continue to be san,_pledand will continue to shift as long as gate Z12 remains multivibrator _ Z2. This multivibrator conditioned by bistable will stay in the one state until its reset line, inin 8,is pulsed° Z7 which is, in turn This reset line is driven by one shot, driver, zig. The AC driver, ZI6 driven by the AC Z19, will receive a pulse when and ZI7 has reached a count down chain, Z14, ZlS, a full recycle count of 16. This occurs when A negative the Q output of bistable multivibrator pulse will be generated Zl7 returns to a zero. at capacitor Z33 and diode CR2, When and be applied to input of driver Z19 on Pin 7. the main 16 clock pulses have sampled Z2 will be reset after /' shift register, bistable multivibrator a 400 microsecond delay which is generated by one shot Z7. chain. One The AC _ driver, ZI9 resets the count down the auxilliary register. would shot Z7 will reset in the data, gate Z1 ZZ If a 001 had appeared be _again enabled; however, since bistable multivibrator, has been previously set, the enabling of gate Zl is ignored during the / /! readout and this condition does not disturb the operation. D At the end of readout, the shift register will store t_e data until new data is received; Until a new code recognition Occurs, conversion this data is displayed by nixies, binary-to-decknal DSI, DS2, DS3, DS4, DS5 and DS6. These form. assemblies accept, are assemblies the 3 v logic levels convert to decimal Z3, The ancillary register ZZl, ZS, at the conclusion of a readout is reset tO ones. Had the register been reset to zeroes, fi__ ono o_: tf_equleRe_n_ t__s_o._. upon receipt of the Of _-_ ......"--_^-_ t..._-_ / ML/TN Z300.55 Page 3 i. transmits would a continuous stream We of ones) erroneous code recognition by storing all have taken place. eliminate this problem ones in the register prior to receipt of the continuous data transmission of all ones, The count-down chain and ancillary register is reset by driver This driver is triggered chain, but itmay be ZI9 at the conclusion of a readout cycle. by the count of 16 being reached in count-down also triggered by two other signals, the Sensor the Command through Actuate signal. These Actuate signal and signals are applied to the driver before putting data into the sensor C13 and C1 2. Immediately channels, the circuits in the readout portion are reset so that, had state, the resetting would state. The input through noise triggered a flipflop to the wrong occur, and make from this flip flop go to its proper C12 comes a one shot, Z38 at the application of a push-button Before a command is inserted are reset. switch which initiatesthe commands. into the experiment, the flip flop in this section of the GSE The commands and Z39, are generated in Parallel AND gates Z35, Z36, in conjunction with voltage dividers i_2, I%1, 1%3, P_4, I_5 AND circuits are noni_ver'_ing gates having PNP a strobe one shot Z37 and levels The strobe and i%6. These outputs. The inputs to these gates are from enabling selection switches on the front panel. one shot, Z37 is actuated by one shot Z38 which by the actuation of the Enter The command the command which Command in turn is triggered switch on the front panel. the selection switch and push button switch at the input of one strobes ,[ is first selected by depressing is entered by pressing the momentary sends a pulse through resistors i_7 and _YA shot Z38. _ - This one shot, in turn, triggers one shot Z37, Which The command gate selected to give the command. conforming pulse width speci-' is g0 milliseconds with the spacecraft telemetry _ication and simulates those commands that would actually occur in ,,\ <{ ML/TN Page 2300.55 3 Z. : -! The circuits in the lower right hand corner of the schematic or utimately data clock are those which enable generate either continuous button data impacts switch. the insertion of data by push If continuous Z44, is desired, module, _ _ _ i ' ' i ul j Now that is, if continaous pulses which hits are to be inserted, strobe I/2 of dual NAND when produces gate Z43. / Repeat this half of the NAND switch The gate is selected position, the Manual selection 5 and 8. toggles pulses is in the Repeat putting a one into inputs output of this section multivibrator Actuate signals. Z42, of the gate is Pin 6, and Pin 6 and triggers one shot Z40, produces to Pin which all of 9 of to bistable the Sensor line. This line eventually the sensor _ Z41 which analog produces Actuate Pin 6 of Z4Z is also applied the Enable signal. The Stimulus signal which relation Between the sensor occurs two prior signals the Sensor these will be explained as we explore signal generation. * The "'and begin switch other half of Z43 is used to set the bistable multivibrators when the repeat manual a data readout. This setting will occuz the Enter is in the manual Whenlines position and when i0, 7, 9 and Z43 / Data push-button is depressed. Pin ii are at ones, when the output, iZ, will go to a zero. will be reset since Pin the push-button as the _, is returned ' push-button to its normal returns position 8 will be grounded to its quiescent Condition. -I i "j •i I In this discussion is stored place, Sensor in the GSE have "_vehave seen how data from the experiment takes and how or by go and section how seen how the 001 code recognition ,! and we Actuate the commands are generated, signal is produced, Data either by continuous switch. Stimulus generated We clock will now and depression to Sheet of the Enter push-button the Sensor pulses are Z of the schematic, calibration section upon see how of a the actual analog .r I receipt -' Sensor Actuate S_.gnal. U MI,/TN 3300.55 Page .33. The Sensor module Actuate signal is applied to module Z45; the output Z45_;isapplied to Z46. Each The output of Z46 is applied to ZZl7 contributes a delay which of the delays of the and Z47 to Z48. co2responds of these modules to the numbers in microseconds second through the fourth columns panel: One 50 microseconds, of selector switches on the front and 50 milliseconds. 500 microseconds, shots Z49, Z50 and Z51 are triggered on the leading edge of the so that the firstone shotpulse Actuate signal. The occurs outputs of the first three modules immediately occurs upon receipt of the Sensor second after a 50 microsecond delay. delay and the third occurs after a 500 n%icrosecond I The output of these one shots are positive Z53, Z54, Z55 and Z56. strobes gate going pulses which strobe AND/Ol%circuit The output of the last one shot in the one shot chain Z48, Z57 and part of Z56. These Z59, phone, these Z72 driver for that Z6Z and Film one and gates generate pulses the which strobe are applied waveform to NOR for pulses Z67, the the gates micro- Z63 which A and are These Z65, the generate Film B channels. to parallel AND Z70, gates and The AND are strobe Z64, from Z69, cable supply pul,_e a that switch shots Z74. applied parallel Z68, is gates used to drive modules driver Z73 Z75. _ The DC voltage level these modules The selected stage which selection to be the analog 0f the driver module from as the of the is desired. transistor output switch is simply B+ supply by the saturating is generated saturates level by the front analog panel. determined settings on the Arranged sequence at which pulses are generated in each of these channels is so as to insert signals throughout _he duration of a,readout. Signals are inserted, in addition to the beginning of readout, in the system during the times that inhibitfunctions should be occurring such as the microphone accumulator inhibi_the microphone PHA inhibit, the film PHA inhibit, and film accumulator inhibits,, To check ML/TN 2300.55 Page 34. out all of these inhibit functions, some whenever a readout occurs and some signals are injected automatically signals are selected from the push-button array on the front panel. Pulses may • i of 50 microseconds_ milliseconds. The be selected in any of the three channels 500 microseconds, 150 millisecond 50 milliseconds at intervals and 150 by taking timing is accurately made is counting down a signal off the countdown chain which during the strobe. readout and using this signal to generate the 150 millisecond i .4 A sequence Appendix C. of hits and the relative timing between them is shown in 41 i Z59, The logic provided by modules Z60 and Z61 is simply and AND from Z52, Z53, Z54, Z55, Z56, Z57, arrangement whereby the strobe pulse occurring one of the one shot modules Z49 and Z50 or Z51 from any is required to have coincidence with a one which occurs of the inputs from the delay time selector switches on the front panels. Ifthis coincidence occurs, AND the signals are inserted; the output of these circuit so that various pulses through a common Z60 circuits drives a transistor NOK {_ which have been selected may be taken in sequence output gate to th_ desired channel; these NOR 'T and Z61. They form the summation circuits are Z59, point at which the pulses at the onto the one line of each channel. various time intervals are summed Since itis desired to interlock the system to the extent that we do not want to insert rapid hits during pulse height analysis_ the Outputs of one shots Z58, Z6Z and Z63 are fed back to certain AND /gates as inhibitfunctions, so that once these channels are excited during PEA interval. to the PEA interval, no other excitations can occur in that particular correspond _:' [h.-:se one shots are cho_0n with widths which inteiva!J hits The lights on %he front panel are coded to indicate been selected will not get through on ,the mic to excite we cannot"' _hich have I_we press 'the system. the zero microsecond ML/TN 23OO. 55 Page 35. light the 50 microsecond button because this 50 microsecond of the microphone signal PEA will occur during the first I00 microsecond and this is not allowed. The DC l_vels supplied to the driver circuits of Z65, Z68, ZT0, Z73 and Z75 are established by either the vernier controls 1%63 and 1%73 or the preselect thumb wheel switches consisting of $26 and $27 and by the position% resistors i_63 through I%91. The of the Preset/Vernier the Preset selection is determined switch on the front panel. Ifthis switch is in condition, the DC lev61 for the driver circuit is taken from arm of $26, If the switch is in the circuit is taken from the junction of 1%72 and the wiper Vernier : the Mic position, the DC voltage for the mic arm. vernier potentiometer In similar fashion, for the film position, the levels for the film arm of $27_ if the wiper arm L cg.zcuit,if the switch is in the preset "_' 'ivers is t_ken from • _._" in the vernier is of 1%73. The mic the levels of which the junction of 1%96 and w_per position, the levels are taken from preset switch $26 consists of a 8 position divider, are adjusted to give those appropriate window O through 7 on the mic pulse height analyz.gr, In the film channel, the range is divided up into two sections_ 0 through 9 and i0 through 15. Ifwindows 0 through 9 are desired _,the right most thumb wheel switch, $28A, 1%91 form is placed in the 0 position, and resistors i%82 through If switch $28A is in the part of the voltage divider network. one position, we are considering levels i0 through levels for those windows network 16 and the appropriate will be generated by the resistor divider . 1%96 and i%75 through i_81. The film channel, dynamic ranges: unlike the mic channel, having a very wide different range, necessitates* the division of the signals intotwo a high range _nd a low range. This divi_ionenables tli__ignal levels ou the_coaxial line__o be within the range wher_,_noise can be * rejected easily and the signals can be easily handled. have approximately the same The_e lines voltage levels on tiiem but at the experi- t ML/TN Z300.55 'k . Page 3 6. ment with lines made end of the a minimal the film GSE/experirnent so that the noise signal interference. cable, whole The an attenuator dynamic selection on either range (See of which high Appendix) of these is / is placed in the.line is transmitted is to be transmitted or low, in switch section $28B ifthe analog signal is being generated $29A is a toggle switch which is being used. is used by the film vernier control. only when the £ilm vernier potentiometer Its position in relation with the preset controls is not important. The outputs ofdriver appear on coaxial lines from ' t brought through seperate leads modules P6, and Z65, Z68, ZT0, Z73 and Z75 The returns of these signals are are isolated These from DC ground by inductors LT, _L8, L9, LI0 : _ : and LII. inductors constrain the coupling and return currents to their appropriate problem does not exist on the mutual Across shields, so that a common DC return between the GSE the experiment. the variable B+ CZ8 selected by the vernier or and czg, which supply the preset contr_)iSare capacitors CZT, curren% demands -. of the rapidly saturating tr-_nslstor switcl_es which -- form the 9utput pulses to the experirnent_ We notice - i_'our observation \ of Sheet 1, that the •Sensor Stimulus This <) • .Enable level signal came to a one.prior to the Sensor AND gate modules Actuate signal, Z67, Z69, is applied to parallel Z64, Z72 and -.,..''a This DC desired, and reduce level is down except when _ Sensor Stiroiiusis appearing the. probability-of an extraneous signal on one of the data output lines,,and is added as a special'precaution. in this GSE. • We require tl_e coincidence/of . the Sensor ._. Stimulus signal is generated. as well as the Sensor Stimulus Enable b_f0re an offtput "_ pulse The probability of both occurring at 'thesan_e time reduces the=probability "< ,Y noise is greatly probability'_without the c01ncedence. .'o x , -_ Ii V b ,-" :z! ' " ,\ J ML/TN 2300.55 Page 37, Let us now examine-the operation of the circuits on Sheet 2 Circuits. We see the selector of the schen_..atic, the Switch and Meter switches are four pole double throw switches being utilized_ The Film A and B charnel data interval selection at which the microphone • pulses are inserted is in the upper lefthand portion of the switch array. The Heat switch turns the heater power determines whether on. The l_epeat Manual switch hits will be inserted by Push Button with the runs at a Enter Data switch or started by a continuous clock which second rate. The Preset Vernie r switch was line switch controls where • z explained previously. The Battery/AC primary power the suitcase derives its from, that is from Power a greater than 12 volt battery switch turns the power to the or frozn the i17 AC GSE line. The on and off. The three command and l_ead Command switches, Calibrate Command, are generated by depressing one Clear command _ t of these switches, $20, S21 or $22, and then by an Enter •Command momentary contact switch $23. In a similar manner, data is injected '_-' by preselecting one of the time sequence hand portion of the array and depressing switches in the upper left the Enter Data switch. . All of the switches on the front panel a, alternate action type, re this meaning once that they will stay in either of the alternate positions except'S19 and $23 which are the initiating_switches \ depressed for entering data or commands. The metering schematic, circuit i'_shown in the upper portion of the This / as is the constant current generator Ol and Q2. constant current generator is used to excite the sens[stor temperature probe which is located in the sensor ; current uhit in the e_periment. The generator consists o_ dlrivingtransistor Q2 and output tran,:Theconstant current is derived from the collector c_rrent internal to transistor Qt_ The current to transistor Q1 its embitter sistor O1. :_ i_, 40 generator is established by an accurate voltage reference across resistors ._13 and P_14. • This currer_t is established through the emitter J ' , , -, >, 'q I ML/TN 3300.55 Page 38. follower action of O,I and Q2. CRZA, precisio n reference The reference voltage is derived from The current, from Q1 flows through Q1 diode. the temperat{ire sensor _o ground, _s measured probe in the experiment. Voltage across as the output voltage of the sensor 1 of selector switch $25A. as applied to the input position No. This by mizroamp The reference switch meter for determines M1, which which serves consist right with of the as circuits is to be metered meter. derived C, - - a null-detecting of the voltage null-detection divider to the ending from J- ..... precision beginning L. voltage with are hand R56. J portion The of the schematic, resistors in the in resistor 1%18 and inserted 100 otilm buildup occur this chsin pair divider as well emitter to account unbalances andQ3B. case the is for tolerance which The replaced through level may as for follower slight Q3A in the matched of the generators emitter basis of the emitter resistance current emitter Q4 and follower emitter variations followers Q5, in this by constant these changes and maintaining current of the matched at the constant follower. regardless High current ratings are avoided. unbalances The Q5. resistors to variable current The do to wide reference sensiti.vity R21, R23, R25, / in emitter by CR7 is adjusted 1%31, R28 current is established of the meter R27, R29, on the basis by the and use of Q4 ard of fixed RZ5 in conjunction potenti0meters i%20, 1%ZZ, R24, with the meter. \ 1%26, 1%28, 1%30, 1%32, 1%34, which are placed in series These additional resistance variations allow for Vari- ations and transistor paran._eter's as well as Siight design tolerances. "- The levei_ est_51ished for this pbtention_eter circuit when the +3, +IZ., +6_..and volts are "7 nominal] in the case of measuring the tempezatfllre probe, the voltage of the bridge is 2 I/g volts_ and in the case of the Z9 Xyoltsupply, tn!s voltage is divided so as to reduce the dyr_amic range required or%the'_.n_etering circuit. Diode CI_5 and ifthe drop across 1%19 and the meter e./cged diode cond_ttion voltage - \\. , ,L t ----- ML/TN 2.300, 55 P__,g_ 3_9_.:J .... ..... _J--- the diode will carry the bulk o£-tlie -current thereby proteeting the i / _ I jl meter from tr__nsi6_ overloads. The metersci-2-cuit is designed _ . The pr{mary current to ....... ____neasure appears the tempe dlrectl_ ature of the-unit _n l_u_rn-_lilarnps. The movement _its with meter circuit is a direct readi_g-k_ete_--p6-{ which 0 to 50 nn-_±lamp --_-_-isominally n _- -----_ no null detec£i6n, measures . --_- 2.04 as an null detector, 28 volt primary supply. included observed Calibration curves in the {est results on the first unit. for the t_rnperature sensor in unit 1 is section along with the meter readings L, ]Refer now to Sheet 4, the Power Con.ve-rter _section of GSE. This portion of GSE takes the 110 volt AC excitation power and converts it to +3 volts for the It also through +29 volts for the experiment logic circuitry generates an AC as well and generates as +30 volts for the meter The 1 iO volt power circuits. is applied the heater 22 volt. line noise suppression filter SP switch 302.78, which $24 which is w network is an on-off TI01 which converts :- - ".... - filter and is applied switch. The power to the power is supplied to thetransformer PSI, to 6.3 volts for the lamps, power converter, rectifier andto the i8Ovolt'high to transformer and CI_I04_ v0itage T1 02 and and finally is applied Clef01 and CI_IOZ, fullwave CIRI03 filter LI04 LI06 CI05 and CI07. The output of this filteris a DC is applied voltage_of Q10]%(" "\. which ii volts. ""\. . approximately QI01 is driven 12 volts which to the input regulator regaiator of QI01 which module ZI01 by differentie.l feedback output _-_e to a DC per maintains This the voltage emitter at exactly Oscillates ii volt is applied of 2500 inverter second." ZI02 The at a ............... is frequency cycles oscillator_r-an-Sf0rmer T103 and the voltage converter trans to TI04 for__the 30 v01t11, - "-_-i2,13 and windings o m o _ _ _o _ , o_ o 0 0 ,,,_ <7- m J _ . _ .,4 " O9 o O0 0 _0 . _ rar_ u " 0 ++ ,d ,-_ _ od _ oo _ c; _z eq ,_ o; :__ . _°_"_ ,._ 4_ O0 un_ CO _ 0",' ,,0 0 _ _ _ 0 0 0 o ' ' " i O_ oo _ 0 0 . ;0 o'_ _ • f_._ ,0 ,.el I q [ -. _ - --" " " .... [- .L_ _ _ . _ _ )I ',{ II 'I :i ,, ...... --_ , - _;'_ '_, _,, i " --- ML/TN 2300.55 Page 44.b. _ ML/TN 2300. 55 Page 45. a. ,_ _ i FILM .A AMPLIFIER INPUT (nano-amps) L............ i i PHA +Z5°C SN/3 -50°C -Z0°C +100°C +55°C +25°C SN/4 -50°C -Z0°C +100°C +55°C , 1 Z 3 81.3 105 135 180 74.7 96.1 131 175 _ 238 324 444 610 860 1200 1670 Z500 %y 91.6 iii 142 189 249 338 460 6Z6 864 1190 1640 2440 9140 23300 43300 ' ' : 59,5 80.8 ii0 152 Z07 385 394 546 756 1050 1460 Z160 3000 12900 30700 58.1 80.8 iii 153 Zll 389 403 557 776 1080 1490 2290 3150 8140 ZSZ00 62. Z 84.6 114 155 Z09 287 396 545 750 1040 1440 2190 39'_0 15800 32700 5 6 7 8 < 9 i0 II i'2 13 14 15 Z40 326 444 608 844 1i70 , 1630 Z440 5600 19800 39800 3440 13Z00 34500 Figure 9a. PULSE HEIGHT ANALYSIS DATA, FILM,A / / %; . ,. dl_ /" ,j ML/TN 2300.55 Page 46. a. FILM B AMPLIFIER INPUT (nano-amps) '' N/ _ +55°C ! i : SN/4 ..... " | -50%= +100°c [ -20°C 1 2 "3 4 _5 6 7 8 77.5 97.0 130 177 236 321 440 604 833 c;, 68.5 88.5 119 16Z ZI8 Z99 410 560 787 80.3 102 133 183 -'/246 330 448 6i3 840 ; i ; : +25°c 59.8 77.5 ..106 146 Z0Z 278 384 534 740 • -50°c -20°C 7" +1 o,q°c +55-C 6Z. 1 80. 9. : i i i ; i _ ! i " ,-57.2 '74.4 102 141 196 271 378 531 745 " ;' 109 -149 Z07 Z84 392 543 747 = : ; -_ 9 10 :' . 11 12 1150 -1590 Z360 5610 i9z50 38Z00...... j 1090 1510 % , 22,5(A -3i'!0" 13100 32100 r-_.. _J60 ._610 ! 1030 1440. 2110 3350 15900 _ 34500. to50 1470 2150 1040 1440 2090 43Z0 -16900 35000 ' ; 2.,3,80 ' 8010 Z1600 40000 -' '_ i3 " 74 15 29c,0 12900 33000 _- . -- _ .,"':_, , _ ,_, :Fie*_,re i Ca. PULSE HEIGHT ANALYSIS DATA, FILM B .3) L ,1 ." 3J q r-. • ,') , . . ML/TN Page 47. Z300.55 is noted at the lowest crystal levels and is well within the expected noise of the calibrate The noted - input and is within a millivolt of input signal. It may'be is data stability improves as the signal level increases. amplifier sensor o6 X that since the. gai_. of the microphone 0.3 X 104• from the microphone approximately of%he channel approximately to the gain of 2 ax_nplifiers and is therefore, parator, c- 104 to the corncomparator by .6 X 104 is 40,. Six to an we see with 5', the threshold microphone divided is approximately millivolts impact \ _. •-< ZS0 millivolts, which when at the calibrate crystal. At threshold, is equal occurring on the plate causing channel. signal[ a 40 to 50 microvolt The lowest levels signal in the test at the input of the microphone datacorrespond •a_-__ plifier channel -.. - to these through small at the input to the microphone Figures : the two crystals. 9aand 1 0a " give the test data for the Serial Numbers and digital conversioi_ in equivalent is known _r 3 and 4, Film have amplifiers been represer/ted !eSic. since Here, the data-could nanovolts the input impedance range from of the film smplifier (3z_). The dynamic the first to the l'Sth step is is qaite good approxLnaately over the wide 500 to !, and the stability of th3 numbers extreme of temperature. The 4. results We are plotted graphically in Figures region • " through linear . here been " 9b and 10b for serial number in the upper see the nonlinear including in the The excursions have the 1 2th o of the channel right hand corner the 15th steps, amplifier A gain change is inserted by a simple, diode/capacitor due to the diode compensated, temperature Th? network. are those coiefficient which only partially has been gain of the amplifier dynamic a high in this range resolution temperature 81 -_ sensors. region may reduced drastic'ally, s0 that a large _" steps while maintaining be acliieved on the high levels. The _on the lower drift of the ampli, fier channel range is almost under on the majority nauoamp The " of the linear is a very negligible..The for capacitor threshold realistic threshold being small, physical size of the system these da_a re_prosent '' a significient advance and digital conversion. C_ " _n th. state of the art in a_nap!ifiers, detection; _ ,_. • " o O - " • ,.} j- ML/TN 2300.55 Page 48. -_ The transfer function f_'om GSE temperature runs are shown in Figure to sen'sor input for these iI. test data The data in these graphs, enable the correlation of GSE in volts to actual sensor equivalent _v or na. ! V Figu.re IZ gives the nominal perature calibration of the sensistor tem- probe which is rr.ounted in the sensor electronics unit and is excited by a 5 millia_.vnpere current, the voltages and resistances listed in this curve are those obtained froxn the manufacturer_ An actual nun using visual interpretation of the rneter circuit in the GSE _ is also shown in Figure 12. Notice the close correlation with the which O manufacturers'data observed to that temperature,reading is actually on the front panel. j... MECHANICAL DESIGN AND TEST RESULTS : The logic unit of the Surveyor Ejecta Detector was designed with weight -- ' " with t]heconcept of obtaining a st','ucturallyoflnd package s kept to a minimum. The logic unit is located on the spacecraft in a cantilevered positiou necessitating good structural st/_ngth with the ;; package, -"""-.. ,i . were ;"}, fabricated from solid blocks of magnesium giving each housing ' ". " ........ a homogeneous structure with exceilant rigioity. The magnesium material," type AZ31B magnesium tooling:plate, was used bec-au-_e of -its good _vibrationda/npening characteristics and high strength to weight _ ratio. 1_abricating the housings out of solid blocks also simplified the desig_u>ofa build-in wire well_ a small c£annel shaped groove h \\ around the outside perkn0ter electrical interferences .... for inserting l%-fgasketing for mini_nizing , ,1 1 GSE MILLIVOL'TS i ..... .... ML/TN 2300.55 Page 49_ • •.,.o ,• . ........... '' , • F, E F J, ..... . ............... . . .. . . . ._ % ..... ...... ... " " , , "" . ' .................................. • , . ....--m . ., " _ ' ............. ;D ,. ',. . | • _,, , 'o : ... ._ [j]. ' ",, ......... .................. " .2". . O .41 .................................. _ k % .. • \, % .i-4 ' ........ ,rJ_ ' " " ' " " _'"':" : _ N N ........ "" " , .,_: ..................... x .... ':, •_ •. " _ .. . . .. "_,,, % _ "_ '_. " : . . .: •. "" : . : • . ._ ..... '_ 09 r_ _, _ ! o ._ 0 _ ! 0 ._ E_ _ ......... •.: .... _ ........................................... "...._..'. • -....... •. •" • .. ., . .._x_,," .................. ._ '_ ............. _ ........... •,,,_. . .,. ...................... " , FJ2.,,!,.-,,..... ".! •. . • _ . . . : . .::'.'.: "'.,:.. ' .',i.'..,.,'.,, • .., .. ,. _ o_ ._ . •. • . ,'. . . -__ '. ,, . _:_' _ .... _'_' ,':._ i .............. ' ' •" .......... -i-i.., .i ,.ii .:-xx.\.....2.21"... . . :. i.i ........ • ...... | ... -_ .: _ • • , ; ........ . .'. \," , . :: . . . . . •. ::- - ......................... .................... ,...:,--:.:-- :.. : : ."_:. "-....... . ",'.C ',-3 -'.-0-.... . , # ..... _ 0 _ : .......... :..................................... ............... -:_i_. -'--'_.'.'_';._"-'_.._ : _-_ O. _,_ ' _ ,L _ ,o _0 _ _, ML/T_ _ 2300.55 Page 50. 700 3.5 ZOO } -20 _ Figure 12. TEMPEKAT-U_W/E 0 '" Z0 -20' 40 -40 Degrees PROBE " "60-.. -60 Centigrade CALIBRATIO?" CURVES "'80 -80 100 -i00 I. 0 ,_ L, ,v -. a# b • / I/i A. j ........ _ .... .............. - -- 7"r-N-Z30o.55 Page 51 o Two housing ,t cross internal member rigidity shear and weI?s relieved are incorporated with lighting into holes each to minimize for ,, i .i weight, possible housings. Relief cutouts were to reduce weight used on all exterior surfaces wherever sacri.ficing ", IF without the strength of the The _'_ ._ . two covers are also fabricated from AZ31B magnesium toolin_ plateo Four give craft. support Relief without to the cutouts stifeening webs package were ....u^_ also are designed into e._ch cover to cantilevered on each on the sp@ce rrouuted utiIized co_ _ _o reduce i weight sacrificing strength. i I The plated " two housings to obtain and good associated electrical covers contact are entirely gold i I J ' in order bet_,eeu the ,R,..F package. gasketing mesh t and the magnesium surfaces of the completed ° 'i 1 All modules that are used in the logic unit were Laboratories. The modules designed and fabricated by Marshall welded are point- _o-point are positioned and of the cordwood wafers type construction. Components i 'between two mylar with their bodies in close physical proximit V leads are The -_ -with one another and their leads parallel.- The component ' connected by means Of welding interconnectingalloy 180 ribbon. lead out wires used because of the module, from the module of its non-magnetic are also alloy 180, this material is properties. After _,e-,ectri'_al check they are dip coated with epoxy in order to provide effects s'uchas shock and g_eater resistance to environmental vibration. _J _\ t'- The epoxy al=o provides an efficient,means-of conductive The averagg,,size 0f the rnodu!es are '_600 X • heat removal. 400 X o:650and the average weight 3.0 grazn. The logic.unit utilizes 76' welded modu_e_ of 29 different circuits i A welded between welding modules. forms matrix was used for the interconnections The Weldii/gq_rocess wa_ , , , , required ., ' I1 _ '_ _ , 1 decided upon because. soldering suflers. a permanent connection, whereas ML/TN Page 2300.55 52. the weakness ' of a separable connection. In addition, welding is a fab- -st_b!e Pr0ce ss, which rication. components, permits repeatability and contro I during W'elding-alseassures because the reliability of assembled in the joining process electronic and is heat is localized damage. less likely to _.nduce thermal The welded matrix consists of an epoxy An glass support glass . 0!6" spacer of thick on which _ separates two layers by :008" - the modules board are mounted. from . 031 epoxy the :natrix to each the support the matrix, consists of alloy 180 wires film. Wires a£ r_.ght angles on one other, separated mylar side of the mylar Welds all run vertically are inade between spacer board holes ' and all wires through holes on the other in the mylar matrix side run horizontally. film in order Wires. An to make connections glass the perpendicular separates" which .031" from thick epoxy ,the bottom thick. board of thematrix Module and the interconnecting are inserted holes is . 031" lead out wires through through in the support board. protrude mating is welded in int'erconnecting the module rxuu_?h are swaged for the termination Interconnecting _l!oy 180 ribbon between Excess lead out wires and lead out wires are clipped board fronu the matrix. and lead out wires ' after ,welding. of interconnecting Terminals board onto either the_ support of wires that lead out to the conn ectors_ After final c_libration matrix urethane FPH To "and rnodlde prepocymer. assembly The and electrical was Coatedwith check, the completed 113 a li ]uid eccofo.am resinl was environ' solithane using unit was then foamed a high temperature secure the electronics to maintain requirements. polyurethane, J . in each rigid, foam-in-place This the of the housings. and to meez method employed _ental minimum weight severe u ', , : rnea_ure_ , The completed 6.00" package for the electronics and weighs 1085 of the logic unit grams. X 5. Z5" X 3.56" k) ': ., .r r ML/TN 2300.55 Page 53. [['he packaging philosophy of the sensor electronics followed the same as that,' for the packaging of _thelogic unit_ _vlagne'sitma was used in the fabrication of the housing and covers. The " 10.00"_X sensor electronics with sensor plate mounted The measures 2. Z5" X 9.34" and weighs aluminum 723 grams. sensor plate was fabricated from alloy 6061-T651 and delivered to GSFC the housing The initial hardness Laboratory for the depositing of the films. to which it is mounted by means The plate is isolated from of six silicone gr.ornmets. with-a Shore Durorneter :!prototypeused silicone grommets & /'of50, the sensor assembly !to tBe Surveyor was vibrated at Jet Propulsion Vibration Specification. were tearing,away The results of the _estindicated their mounting holes. '," that the grommets • "" from To alleviate this problem, that used a Shore Durometer washer was placed between The / the unit was hardness the grommet unit was refittedwith silicone:grommets of 70, and an oversize and the bottom vibrated flat of the head Surveyor, of the mounting'screw. again to the Vibration specification v;iththe correction and the results being that the i The Surveyor ,,Optina Cabinet that Ejects Detecto_ IGSE 11 1/4" is packaged into s standard electronics tearing of the grol'nmets was eliminated. measures X Z0 I' X 22':-. ',The can be removed from the cabinet by pulling on the handles provided. 80 rnodules wl_ich are welded The three modiste matrix from onto The ci_:cuitryis distr_,butedamount three welded _ matrix assemblies. assemblies ' are accessible and independently removable This is accomplis'hed by having each module thee,main chassis. assembly matrix having_/_ harnessing. individual'pigtai[edplug-in connectors that tie into themain A nul!ing printed circuit _oard is located accessibly :-, -•;L,," so that calibration and trbnming of the potentiometers can be done with all or'hercircuStry and Welded modtde matrices ' - ,t "_" _' intact. All printed circuit boards protected by solithan'e113, are I, "" /' , ' ., ,L • ". _L t'', . _ " / /',".., -- -, . , • ..... ML/TN 2300.55 Page 54. A cable cor_partment is provided in the rear -o2r.hecabinet i_ems. A box that can be fo_'the storing of iabieS and miscellaneous plugged into the rear of the cabinet and extend to the fron£ is provided for monitoring pertinent data points by means of test jacks. % / ." j- ,_ J ,,q | 'J • I ML/TN Z300.55 Page 55. APPENDIX / A INEW MODULES USED II'[ THE EXPEI_Iq_ENT \ ) ' 4 '_',, L_ > / • , ,¢ - '%/ / / 'b / ! / / / / ML/TN 2300.55 Page _. The Detector, 1 percent _o +I 00°C, / following circuits were designed for the Surveyor Ejecta The design goals included operation of analog"circuits within of room The temp.erature value over a temperature range of -55°C They additional limitations were space and power, _'_reisted numerically l with increasing part number, : W233-7 One Shot Module_ J This W230 one mod_._e module, wa_ designed with to have the characteristics 1:/.2 CR1, of the CR2 and sbet additonal maximum components C1:1.3 added to give this module I noise reje.ct{on, The noise __ "- voltage on any line has to exceed will occur. capacitance be minimum. at least 0.5 volt before triggering RResistor P.2 and diode CP.-I, relieve Collector load RI of C1 and enables the c011octor waveforrn recovery time to W4151 Low Level A._nlSiifier. : , _ <-, ,-, T}i{smodule is used to -_nlplify bhe microphone channel, It has an nominal signals in the_, gain-of i0 " > ....._'" .._--'< '>.,, " first three stages of the mic which is established by the ratio of R6._ 1:1.7, ,._°°erat_s to It well above" the 3 db frequency of the transistors; that is._the current drain of both transistor_-'_'.'.Ainirnized sO,_,',s conserve to power stage dissipated is nominally hnpedanoe 300 pg-_er, Thetotal/--< in this ,stag6 is !/:-8 miiiiwattso The stability of this 1% over, the.:_5"iS°C 100° C t,:_mpe::ature to range. is _'pproximate,Ly ohlrn_;' , . : _, _,, ._ - ,.. The input approximately 70K and _he output ..<'.d_ S impedanc, e'is . ..... "" W415Z and W4153 H_h'S_eed Cornp_!0r _odul 1¢_') " This.circuit was designed to operate_at data rates up,to 500 KC It _onsists ,ofa ,fllfferen.zal amplifier stage and]emitter .fo_low iso.r ation state. ,A PlX.'P _mplifier stage d'rive_"-"st_Je _peed iS achieved ,r / _, L " ic', ", ,, ", i )L I , = , , , %' , . " LQ_/fN 2300.55 Page 57. through clamping the collector waveforms of the first differential amplifier stage with diodes Ci_i and ClIZ, thereby limiting the charging of the stray capacitances in diodes CR3 and CI_4. When in the circuit. Additional clamping The outputs of this comparator occurs are Pin 7 and Pin !2 of W4153. -" a positive signal is applied to input A of W415Z, Output Q will go to a zero. Similarily, if output Q will go to a one. a positive signal is applied to input B on W-4152, output (/will go to "a one. The power dissipated in these -L_voodules m is 14.7 nliliiwatts on the +IZ, I.68 milliwatts on the +6 v supply and II. 0 rnilliwatts on the -7 y, giving a £o£ai power dissipation of 27.4 milliwatts. W4154 And Logic Module. This is an noninverting gate requiring coincidence for an output one. at the input Itis used to obtain a very fast leading edge on Itis designed for a W4159. power supply and is positive going waveform. used to drive gated clock module normally caused Since both transistors are is in the off state, the power dissipation in this module by that current through i_I, and is approximately 30 microwatts. W4155 Parallel AND Logic Gate Module. / This is essentially the same as W4154; the collector load on may be in Q2 has been omitted so that one or more parallel at the output to form the "OR" of these modules function. : W4157 Command Interface Module. This has -: been module is essentially The input a one impedance shot. has The been input increased trigger level adjusted. by the addition of I<7 in the input line. The level at which triggers is established by the voltage divider R4, J, , the one shot i%5 and I%6. CR3, ML/TN 2300, Page 58. 55 W4158 Sure Starting Clock Module. This run at 100 module cycles per is an astable second multivibrator This which which clock saturate was designed to the continuously. overcomes both difficulty immediately is of some astable multivibrators, turn-on. choice The of values transistors transistors collector upon'power by the R4. nonsaturation of resistor of both accomplished R5 and R1 and the the of the loads across If both be such the transistors that it would were exceed would saturated, either have potential potentials R1 would RS, at 1%4 or thereby transistors to be paradoxically turned-off. 4 Therefore, since both cannot saturate, one of the transistors turn-on. Trans- will be turned on and the other turned off after power istor Q3 is a isolating amplifier which drives switch Q4 to a 3v logic level. This clock is designed to maintain a frequency range of -55°C stabilityof better than i% over the temperature to +100°C. W4159 Gated Clock Module. This clock was designed to start very rapidly upon receipt of section where since it delay a clock control signal and is used in the pulse analyzer delay times in starting the gated time must be minimized is utilized in a pulse height to time conversion, This minimal is achieved by coupling the leading edge of the applied clock control pulse through transistor Q4 to the base of transistor Q1 which be turned on. ! Q1 immediately is to saturates, turning Q2 off. This signal results in a positive-going signal applied to the base of Q3, the saturating switch. The collector of Q3 is the output of the module. Upon application of the clock control pulse to Pin ii the output at Q3 goes negative. The output is a square :wave at the frequency capacitors which are applied across determined by the external Pins 3, 7, 12 and 9. ML/T - Z300.5¢ Page 59. W4160 Final Amplifier Module. This amplifier, the microphone / of 70K has which has a gain of i0, is the final stage in Its input impedance is in excess The output amplifier channel. and its output impedance is less than 300 ohlms. a wide dynamic swing accommodating signals within 50 millivolts to 2.5 volts. Its power dissipation is +i. 8 milliwatts. W4167 Detector Module. This module of the incoming is used in the microphone channel to detect peaks wave. The input is applied through Pin 17 and C1 pair differentialamplifier transistor QI. the feedback " to one side of a matched , The other side of the differentialpair is driven from through amplifier stages QZ and Q3. network The output is taken off across an of the second base of the differentialpair and appears external capacitor which signal. charges to the highest level of the incoming Since the feedback around the amplifier results in unity gain, The base drive of the output level is equal to the input signal peak. transistor Q3 is sufficient to charge rate. range. D the external capacitor at i00 KC to i00°C The detector is stable to within i% over the -55°C W4168 Inhibit and Hold Module_ The inhibitporticn of this module t operates on a positive pulse applied at Pin 5 which causes Q1 and Q2 to conduct and Saturate. a large current in the output line of emitter point of detector module emitters of the W4167 receiving The current through Q2 causes Pin 6 which W4167. % module comes from the common This effectively clamps the common at a high potential thereby disabling that detector from When the inhibit command further information. is at a zero level, transistor Q2 is turned off;therefore, no current flows through 1%7 ) .,'.___/'i'-\" 2300.55 Page 60. aridthe output lead, positive command The hold section of this module operates on a or_Pin 8, turning transistor Q5 on, and thereby turning transistor Q4 off. Whe;.,! transistor Q4 turns off,the output transistor Q3 is also turned off and no current flows through the output lead in Pin 7. This output lead is attached through a resistor to the When current integrating capacitor at the outpu_ of the detector module. flows through transistor Q3, the capacitor is discharged, in the event that a hold signal is not present, transistor Q3 is conducting thereby maintaining discharged. the capacitor at the output of the detector continuously W4169 Gain of Two Amplifier Modules. This module is very similar to final amplifier raodule W416@. g Itis used in the microphone output of the detector. of having to perform channel and its signal is taken from the The use of the gain of two relieves the detector range. over an excessively large dynamic W4170 SCO Driver Module. This module is a three stage inverting amplifier which is used to condition the three volt logic level ._ signals received at the output of the telemetry coding section and converts the signals to 6-volt-to0 volt logic levels, with accurately controlled rise and falltithes. W417 !,Tri, g_er Module. This modu.le is a level detector circuit, the threshold level being established by resistors _2, CIAl and..P_5. Ifthe level at the input drops below a given value, transistor Q1 will conduct causing transistor Q2 to go to a zero. i ) ML/TN Page 2300.55 6i. W4172 Integrator Module. This module consists of an inverting amplifier stage which drives the integrating follower. hence between to drop. impedance capacitor and a dual transistor feedback-type emitter A high data rate of positive pulses Q1 to discharge causing applied at the input and capacitor connected of QZ low to C_I, causes Pin 7 to B+, The DC an external the DC thereby level at the base level is transmitted at the output at a very to drive a logic circuit. _4176 I Detector Module, This module designed is used to peak detect the film signal. It is to follow a very capacitor, The 1"apid rise time and to offer a high impedance time constant will to the charged be very long. so that its discharging high impedance is realized by the use of emitter Q1 which and Q3. is _,nserted This detector follower matched in the closed has a wide 5 volts. pair differential transistor loop consisting of QZ feed back dynamic range and is capable of handling signals up to ' • I a !1 ,_1 i..... ._.:LL_, c. _j,j SEE SEPAt_ATE LIST OF MATE_IA, L , • • : _ ;............"r ..... ; ; ------' - , 1 I ;'-- _ _'_ 1t..-___-._ /_%-i---',.-'--"'3_ _n..4 { ...... l ..... , _.,,<-._-_-..'_-• ___ _ - ....... . _i_ _, -- ] %$1l_:.'; ,'..._,t.,¢_,-,_¢11 .1l .i.I f :_¢1l_::,'i,7_ +,{0:-,_1;I : A.,.'I/")t.._2_,/_ ,/v'/ r_._Yr....¢_-¢. G--" 'I r-Lily OF _IA_'£_tAL'- Zl ,-- i I I {I t'_ T:'.'; _4-_,:_-¢,_il .l:;l.:'_,o_ ' "// _,.-v,.Gr'; /_'_'_'*_"_ ..... %U..%.L..:_ . 2 ""._..2_',i:,U,U%'. "" ,, 1,'.", " 'f "li_'l ,"81?-_"ll _'- -,-:r, ......... _ . I_ ....... ' ..... ' : w ._, d IL) I LI_T OI r UATERtAL! , ; ' , ", t l.._.___':";:,'.t iT, T"_i_"'-" F I"I. _ _ ' i ' ' --' . ........... ......... ........... , .......... '...... '_, ! ........... .,'"' ' ,.,+;:'-',-_,, ---/ I Z._1$'.._ n l__Ts___. V 3-(." --......... t_lo_v__ " * L" ..... . . ] ..... l',z__" J_!D.I" t' t cd, L":_-_ _ _ I_ -/, -- ! :"-'_-"....... ,_1,", ,.,n"t,.:,._ i:._l k'.l ?.':l't'll",l_lll*.L'li"'k','t,.il t,,,I liIttI2r.,i IJ-'tl_.li j f"X6,xt__ / I ,# i ' I L_ Fl. ts¢ T.IlJl_l _;._i.et Itllv,luo 4. I|{,{11 ,,, _ ___ S ...... _ I VV _iJs'ff ..... I_, } -], REYISIOXS ' . _ . "7-- • : ', '_ _ %.._.__.._ _._ LIlT OF I,IATI_.iALII , I _ _-'Z !" , L ._L__I ,.l tr'_ ._. +'_>'_!!!,., ': ,,,, i 1 ....... --_-'_ "_"'-"_- j ..... _i i i i i I I ! I--i-------i-i ' Lli_ 0," I.IA'I'I_II_,LI ° t T-" p-L--."%" ;[-'l ' --__ _.-:,_ I_l_;t If, l_.:.ll,¢:l "t',_,ll-OOi|itn2tll-±ll3_l ....... <,kc_,.','l 11_:';11./:3 ,+,Ol2,-,'0011l'_,i:.,t_l_,.;t.T_..kl .# I" LI_" l_a.14, I OF IJAY,"ItlAL,t • " .... , _: _ ? . , ,.,,,_,_.,,+.,,-.oo,, .... __I "_-Iiii lf,i l."'.;lIe,i • • • " " • ; '. I _l l._ ] I ,ll_ TZ:.'I _:'1+,_,_'+1_11 ,Ill ._,Ol , , -- • ,_°##._&r_._8--_:i I" _,_ I __jiptC__lil+X,lpltl2 ! _;¢17_.?;i":/(.._ i 'I • ,!, o' j , _, • +! r, + , i l+ _ +, ,,.-T.-;+,,_>,,W _ __-.,_,,,, + ,.... 1 , .... ..+_+.+_l++i-........_ .... --'m...... !-++ ,_ ,..,, -, fl _ h',.\,':,;,._l._'_.,,_;. :,_ ',.t." ,,,, ,,,_., -"" ." . • ,,. _ ,, ,-- _-r.,-_f+ &"F_i',.'( +_F'.'+7 "-)i-.<_-` --,----+_1 ?._:_,°'_'-_, _ I _'IP'_L_&... .......... l'_qvtP i+" r i+,--r',,..; .,.,,..+ ..... ,,-"_,.+'?,r-r.,""->-::':,_t__l..+'_ ' I - .... ' ..... _ ...... ,........... "'.+ - -'-':' "'" , ,'..i.'..* ..+' *",P..a.,,"'O'b* .,_++._u _ + • . I _" I+ 7'_";_! I 'j,_. _' ' .i ._ 'I'%+ ''+'+'*I''._'+_ .*'- £-- .......................... _-- I • _" , IlEVI$1ONS ----1f ................ ......... ..... i,-"7+,, ;.",'+,,F"=7,....-7+ "77-__ _-T-vV &7o ' # ...... ", ..... ' _ ..... , . _ .......... _ "_"_'_" + _i ..... . •.............. '......... _ _" + ..... '+ I =,,_.' • " ] l -- .......... _lr_i Lilt OI _ i_Iflllkl.I _ ----O--I_'Z t" ..... l ". " -- .'3 _Plitllii_,,l_ / I _,+,_.,..i..i. b. / , ",v+...i. P,_ IJVl_ " + . i_, '<'+'' II+'+.ri++ r ,') .4 IL_.,+. ............... ............... , --_----, , " .... ;--, .,+TT:--'++7 "_le_ +",r.:i'M _+.'' e,+ < " .+ '+-+ ' '+'" . +_ I .h'.*"{*f, :£ ,XXI'_ .,.:+ +.::+ .,+.<-.l..&l• l[.+,_.a .i_, it i:_m-m|i'.,,mmi..o"t .OIO '<2_'t.'g.. ..... + T • _i,_ [+1_t2_+,l+,,.Ll. _ t_i.;,_=¢._.t_.+ = m .p<_ ,_ " "..... ,--'"_. , a+'l; / / ......... ,,,> +,..,,,+.++,+,,+. I !-- T----I--_ .... I J I i , [7-'7"f 7' ".Y'Z',7 _'I' /l_'l" OF ' • """ ' lil'l'l_llAI.._ -, I I l _ ,'ID. f -i.I ! II.,'._ _}.!7 _ .Ij.._C:l I [ I '' z: ,-','l .I t.'.., ex 'i_1" I, _l ,l',l T'_I C'_ ."_,h_-C'l /1_lfl ,_g I0 L ,3 _r---- "-_----_ ..... " .................. ' " "_="__i" 2_ _'°_'-_- -'__'°""'_"''"'° . I II ii I---F'F--_ i I 1 ! 1 ! Loo 1 .'. _' ""_ T , i J I _=_:I _'_ • ,-T-_-------,--=-_ _ , i G7_ ' • G=_o_ _ :- -"zoo:z_,-z'_w " [a/_/72 i t 1 t I LIST Ott f,AYI'IIIALII I ii ........ ...... ..... ..... ,.,., __ • :,,,.,,,=_. _ .:""". ,"..... • i ,,,', l ". q'l "'," _-.F_C..pj>._-W "_r',,,,,-,_ _, ,,,'tk--,_Xi3"D;_ i ll_ _ ,:......... _..... ,.,.,.,;, .-: ; I........ _' • ,_, " " .... ', '"' "_"___c..,.. ,<_,-._i"_<"_- ____:'::::'_::'_:_ I ,I .! 1 _,-, ,_, ,,, ..... ) , .,,,, _ , ......... _',2krJ,_[n I _ APRil la_4 ) _,'_,() ['",",'g _,:t:"._.,.'_"_,[':.',_ .P"";,'I _'"5",'"'__"-'_'I ; " ,I, ' ' l",, :_ ,,,',t 'G'!;i:') r, ......... ! ......... ._,_."'.,t !._,.t ...... .-_';'"', 'T:'7'." _.... _ ",<: 'i ,,-I+ ' ,,,.,,+.... ,, '., ML/TN 2300.55 Page 78. "r APPENDIX B NEW MODULES USED IN TI-IE GSE GW 4211 GW 4212 GW 4216 pRECEDING PAGESBL.ANK NOT FiLM_L_ ML/TN 2300.55 Page 79. GW4211 AND-NOR Logic Gate Module. This module output on Pin 9. QI, R3 and RZ. consists of AND gate CRI, CR4 and R1 with the CR7, CR6 A Z-input NO1% circuit consists of CR5, The output of the NOl% is Pin 6. GW4ZI Z AND-OR Logic Module. GR1, and CR6 and CR2, GR3 and R1 form AND one AND circuit. circuit. CR7 and CR4, CR8 are CR'5 used /_ RZ form another to sum GW4216 the outputs of two ANDgates Sensor Line Driver Module. to provide the Ok function. This module forms is driven by a saturating PNP The module The tr%nsistor which a fast leading edge. inverts the signal to produce of the pulse is determined a fast negative going pulse. amplitude by the value of the variable B+. I _:, ,..n. :.:,.;,r.:, 3._..::,.x_,_:.. _...... ] i#42 i i " I -i , i < , I I _ _ _l&T OF I,IAT[RIA_._ i I i .... ' .___ i ....... : "( •' ., , , ,..,;._.,,:,... _.,=..:, ._-r,,..,.,'. _.:, ;.;.:,', <-._..;-.'_n ._.; .::_ ._ _,_:il," ._:,_ +,::_-,o,_j _, , ' :::ill _,::J,.,_ LII,ZtJ1 If:;l<-l"t'$i)'la...: __ :--,_L__] _.oozc ,____?T_ _."f_'/,..._.b./,, /v'lO_::_C/_S-_ ".L2a.__,,.I _.'7d_,_-_l :if,.,/.,.. _._._ I.. _,X,1,/::: .... . i_['_'_"_/"/"/¢/¢/¢/¢/¢/¢/¢/¢/¢_1_ __ _,,,,'_- /,.,b_ :, .......... I ............... I _-_,_ , -' _ _t W4{71_...... t 71 t_-T_"_ _,___,_ _'_"7"_"_'_ / ........... "'- "l _.,: .. :--_ V]4,o12 i i t I '---- Le-o.ol___i ! } I \ \ ," - .--0/ _"> <2.0& ,':._c" i I ! l " -'.../ +. ,...--_-, Z&_ " c._ . ,_. O_l < t I 0,_7 ! ti .-Z._7 " __Y"--/- "----" <--i _ .i _ • .-'_7 _7.__ -'-'_ _.._ ....i' _.., t.C' .: i ,. 0_,_ , # Cp-___ _ r'--_<'---< -_ '. { l I ":'_' " - --"' -.,:.i, 1 I I ! l i - -" .... l ............... "-:-_ , .._o,," '_01_ -_1c] " ) .. ! ._,-:l':' ..... .'2" .......... .,.J _" ! . } I 1 " v" I LI_ OF _T_RI_L_ ( t " i "i _ I ..-.------'--J _.. • . ,_ ........ :, i - ........ .... ........ -; ...... _.__:,: :,> :_..,. :_:----,,,.":,:..',.:'.' _:".,:._<::. :.-_.:;:=-¢,f._t<'."_ .,,:, ',_i .i',"i.f7"i_ .(:'!ti",)_l" "''<_,. G<:':_:_: ,.. < ,. /"," ....... _ :_,..,:L ..... I I-:.'.__, _oX_$ •#_>,-,-. ,,,,,.,,o_." _+ .... ._,...,... __,_.-__:e • . • . D_LETE_ ' ! WEt_C) NO. ...... HC,_'r',.I '-" ,-. I . [_,,6-6TiDTz:---7¢---] i _ _'_'_o_[£°1-"P/'¢ Z__.__._, i '" [ W_.2 I0 , • ' )" • , _ _1 1 t ) i _f.. L_.,._,_... " JUL"IIO$, l ' i" f _.;.t,;.t r ..... ¢." .... ," , '_R r'_,r " "-',_ i ._ _I ...... _:.,_u_ o:'.',.,.__,,.:,,;_:,' • . .;*; "; ' ." _. ";'.:,';_'._'_1 .i_ s':.l _.------i-;.;.7., ..... .., I • " ' ...... -,I 1 • , , _ .: . : . .l:_ -;-.:,:_-.::,1 L-/-"" , _- _- ;"_ _ "';': r___;.:,,..,. --'-. ,...._.. ',_:_ . -:_+,_',- "-.;:'-':."-_-__',_.'_,----_->-_-_-_: ----t U / ", " "ilc ! ! ' , 1 • ,..,.._,_.._,.,,.._y_-,----,_-,-,,,, ":: .:_::'&,'__,':-:2_-_... , ._. . .;, . ..... ".'_ " ML/'!'N Z300.55 Page 83. APPENDIX C SPE CIFICATIONS AND MASTER DRAWING LISTS i .I ML/TN 7.300.55 Page 84. This section contains the following released documents: $40533 Micrometeorite NL Ejecta Detector for (OSE Surveyor) 260-I, Test Procedure $40534 Circuit Board (GSE Surveyor) Assembly - Digital l_eadout and Command for Test Procedure $40535 Circuit Board Test Procedure Assembly for - Power Supply (GSE Survey-or) 4 $40536 Circuit Board Test Procedure Assembly for - Sensor Stimulus (GSE Surveyor) $40519 Surveyor Power Supply Blivet, Test Specification for $40548 Surveyor Digital Blivet, Test Specification for $40660 Surveyor Sensor Blivet, Test Specification for $4068Z Ejecta Detector for (GSE Surveyor) ML 260-1, Operational Manual MDL No. 51117, Electronics Assembly MDL No. 5).259, Sensor Assembly _/IDL No. 51304, GSE J -."_ad_ll, : " iiii '[ ......... i ir_ ................. 1. US[ 3. C,_,.'_L]0T DERI_LTOI_K[D 5. R[V_S_O1,t$ i b !-il 0 O_ __k ]¢. ,_'_!:-'----,-_:!/'_"_-o(_':'_.'_"-*-" , ;_ , :APPRq,V_O , "_ ,_ __1119[I II LL! h/r_icrometeorite ect& _.j Detector (Gs_ Test Procedure for .L._BSt_Iur_IL;_ :_o, $40533 , - / 1.0 SCOPE _# I. 1 I I This procedure covers of the assembly. the electrical checkout of the GSE after completion 2.0 APPLICABLE DOCUMENTS Z. 1 The following documents, of the issue in effect, specification to the extent specified herein. SPECIFICA TIONS Laboratories form a part; of this o% u_ Mar shall _" u_ $40534 Circuit Board Assembly, Digital Readout: and Command, (GSE Surveyor), Test Procedure for Circuit Board Assembly, Power (GSE Surveyor), Test Procedure Sensor Stimulus Board, Surveyor Detector, Model ML 260-I, Test Specification for Supply, for Ejecta $40535 _'_ $40536 DRAWINGS Marshall Laboratories 51114 51304-101 Schematic, Assembly, Ejecta Detector Ejecta Detector Micrometeorite _zP_ c_K_0 ..... Micr'ometeorite Ejecta .......... Surveyor) (GSE =-_-_--Detector .... ML 160-I, "-=='"_....... -'-'=-:'-Test Procedure for _....... = .....=- .... L,_A_SHALL •LAbOrATORIES _""----'$40533 - ....... T_' _PaOV_.O-° ......... ,, 1. p, ,_L_ -FO_,M ML77 _ttEET .........."....... - _................ " _ ......... ....................... Z ._3z_ Mm,%o_ Noz_ OF , ' ,':- • 3.0 TEST PROCEDURE 3. 1 Make wiring a continuity check of all connector, on the chassis. Refer to Marshall fuses on the Drawing rear panel 51114. for proper switches, Laboratories value. and point-to-point Drawing 51114. Refer to Marshall i 3.2 Check all Laboratories Remove Apply Measure 3.3 3.4 3.5 3.6 m o Fl04. ll5V 60 cps from A.C. TP to J9. GRD Depress power switch on front panel. 180V to J3-27. ON. Check all pushbutton switches on Set SI01A (lamp switch) to LAMPS the front panel for proper operation. Set SI01A Replace For GSE A. switch Fl04. to LAMPS OFF. u_ 3.7 3.8 3.9 All pushbutton switch lights should be out. circuit board tests refer to the following specifications: Circuit Board Assernbly, Digital Readout (GSE Surveyor), Test Procedure for Circuit Board Assembly, Test Procedure for Sensor Stimulus Model M 260-i, Power Supply, and Command, $40534 B. $40535 (GSE Surveyor), C. $40536 Board, Surveyor Ejecta Detector, Test Specification for 4.0 METER CIRCUIT CHECKOUT 4.1 Measure Meter Resistance and Record. i " SUP PWR _,_A_I_O _:_ _ ""_'_ I _ ...... _ , I Surveyorl ML 260-I, Micrometeorite Detector (GSE- Ejecta "_-_S_LL [1 . L_O_TO_IES _'m_ --_7 v"- ................. _------'_-: _,, " ................ -::---MFa.Co_'--'---'---_: N_.------g 131a--g-_-:-- ._, .... :. : " • , i .... ,.j, i 4. 1 (Conti_lued) i I Increase voltage for full scale deflection of panel meter. Make Repeat Meter note of two voltage readings. with reversed polarity. resistance V1 V2 1K Use average of voltage reading. I 4.2 Selection R19 Tack of R19. meter selected resistance. value of R19. = 1580 -n_ minus solder in the of R14. Box across across 4.3 Selec,;ion Set Set Set decade R14_ J7-R Set and for J7-D 1K. (simulated temperature probe). decade box to 500 -ca. connect DO NOT Apply panel meter.. power. TB5-1(-)and for 28 volts across simulated adjust Rll0 +. IV. temperature (28 volt adjust Measure across TB5-4".(+) and potentiometer on rear of chassis) Select 4.4 " 30-Volt Measure Re-select R14ofor 2.50 volt +_205V probe. Reference. across R104, TB5-6(+) if needed. and TB5-1(-) for 30 volts.+ 0.1 volts. t ' __ ......... i ............. _ Detector Test (GSEfor ._; . LABORATO$11E : ............. 'i .... :_ : Procedure I FORM ML 7 7 t4:m, CODE _In_BER 13Z26 , 4.5 Z9 Volt Meter Disconnect Measure Position. leads. meter leads. leads and adjust R43 Meter will read zero. on TB6 for a null. meter across meter - Connect Increase 28 volt with RII0 to Z9.4 volts (+ 5%). _,djust R26 for a full scale positive deflection of meter. Reduce voltage with RII0 for Z6.6 volts. Vary 29 volts,for a full p_gative deflection Panel meter and record. e_ should read -5%° 4.6 u_ 3 Volt Meter Disconnect Position. leads. to J7-L (+) and ground. leads. meter Apply + 3 volts +0.05V Adjust R47 (TB6) for a null u_cross meter .connect meter leads. Meter will read zero. (5_0). Increa,_:ethe applied 3 volts to 3. 15V ,Adjust RZ8 for a full positive scale deflection. Reduce 4.7 applied voltage for a full scale deflection to the left. Record Position. leads, (+) and ground. leads. I ' ' t voltage, 1_ Volt Meter Disconnect meter Apply external !2 volts +0. IV to J7-E Adjust R41 Reconnect increase (TB-6) for a null)across meter the meter; meter will read zero. the applied voltage 5_0 (+ 12.60V) Adjust R30 for a full positire scale deflection. Decrease applied voltage for a full negative deflection and record voltage. ,_t._A__.:_,_.,_-_ cE', '_ ........... _" _...... '"' --'--"-- %'_--_ ..... .............. _-_-_--'_--'_'--_'-"T'"-__-___-_' ,_ Ejecta , J ._ _ Micrometeori.e "i : " ..... _' , '-L_ , c_0 _--K_9__ -, ...... _ Detector {GSESurveyor') ML Test Procedure 260-I, for :_ . ._,_._'_S40533 _ ....... " ..... '_'_ 1 _ ________._.......___ ,-,'_,'-)_ ? '-I _ _,)! , , MFG.CODE NUMBER i_12_ • ,_, 4.8 6 Volt Nleter Position. meter. ., Disconnect Apply + 6 volt +. 050 to J7-,K (+) and ground. = Adjust R45 Reconnect Increase Adjus_'R32 Decrease 4. 9 t_j (TB6) for a null across meter; meter voltage a full applied Position. meter leads. to J7-F a null meter voltage positive voltage for (-) across shall and scale voltage will read meter zero. volts. leads. i "_-- o i "i applied for the 7 Volt b_% to 6.3 positive for deflection. a full negativ_ deflection and record voltage. Minus [D Disconnect Apply panel -7 volts R55 the the R34 the +0. lV for ground. meter leads. 3 "" _ Adjust Connect Increase Adjust Reduce voltage. 4.10 Heater (TB6) meter; applied for read zero. volts. 5% to _7.35 scaJe a full a full deflection. scale negative deflection and record applied Current meter Position. leads. load, connect a 440 -c_ (decade box) load across : : : Disconnect To simulate the heater :[7-U (+) and J7-T (-). Place digital heat Rl15 load., across power (rear meter switch. of chassis) leads and null out with R36. ; Depress Adjust heater for a 22.0 volt +0.1V across simulated , _= _ .... L _ _,p_ ¢__ cn_c_0 .----5_.,-C__ , _ ''.'.- Micrometeorite Detector (GSE Surveyor) Ejecta -" ] ' [6_$U_IO[_IK_ MLZ60-1, for ;i: _.;:_ _ _ _ _ Test Procedure _'_'---_-_'_'_-_ $40533 ..... FORM ML 7 7 c0m .}1z6 • 4. 10 b (Continued) Voltage across Turn meter leads should read 250 my and connect meter, will read zero and full scale with +!0 inv. off heater power With heater power off the meter heater power turned on, 4. Il Total Current Disconnect Positlon. meter. box set to i. 3K (21.5 ma) and a triplett Simulate load with a decade in series. Turn o on experimental meter; power and null meter lead with R53 (TB6)• Reconnect meter shall read zero. Adjust R22 decade full scaleload of 26.5 ma (approximately for a box to a positive deflection. Decrease ? _ _ ": -.__ 4. IZ Increase decade Meter box to a load of 16.5 ma (approximately I. 06K). i. 7K). should now read a full negative scale deflection. Temperature Disconnect Position. meter leads. Set across J7-R (+) Simulate _emperature sensor with a decade box. and J7-D (-) set at 470 i' Adjust R49 for a null across Rehonnect meter. box to 790-c_. the meter ]eads. i .. Place decade Adjust R20 Decrease (TB6) for 100oc reading on meter• should read -100°C. decade box to Z30;_.. 0Meter ._. .......... _.. " , L.[ ._ _u_; | Micrometeorite E_ecta ____I_.. .............. J. Detector (GSE I t Surveyor) ML260=I, :_ J . "__'_J_ FORM ML 7 7 Mlm.CODE)CUMBER i_l_--_ --'-T_" - ; 4. 13 2 Volt Meter Disconnect Apply 2.0V Position. meter. through a 15.7K (decade box) to JI-G (+) and ground. ! _ "_--_- Adjust R51 (TB6) for a null across meter Reconnect meter; meter shall read zero. leads. Increase voltage 5% (2.I0 volts) and adjust R24 •positive deflection. Reduce (TB6) for a full scale voltage for a full scale negative deflection and record. 5.0 MIC VERNIER 5. i Vernier potentiometer R63 is setup as follows: 5000, select R94 for 5.00V + 50 my at the wiper Set dial reading to of R63. 6.0 MIC PRESET 6. 1 The select rcsistoms located on TB8 R72 R71 RT0 R69 R68 = = = = = 33K 240 6Z0 1.0K I. 6K are as follows: = = = = 2.7K 5.1K z R67 R66 R65 R64 I IK 27K 7.0 FILM VERNIER 7. 1 Vernier potentiometer R73 is setup as follows: 5000, select R74 for 5.00V +50 mvat the wiper Set dial reading to of R73. i........ Cx_.GK_O - -_.-_-.-: .... _- .......... --* _ d Detector II _urveyor) | ,-, ' .... (GSE ivi_ 26" u. _, for ' _ 1 . I_[_I%TN_|_(_ _,,U_. a_,%_,_e. e._,u w II u e..,. _ _i_--'_ _ Test Procedure _-----'_-_$40533 " ......... .... ] " I .1" | FORM ML 7 7 ..... Mz_. coD___ [ _ ,-.,,_-._,-_,__z ........ ........ I " II... 8.0 FILM PRESET 8. 1 The select resistors located on TB7 R96 Rgl R90 R89 R88 _87 R86 = = = = = = = = 33K 300 510 750 1.0K 1.51"[ 2. OK 3.01K are as follows: = = = = = = = = 5.6K 9,1K 325 430 620 2.2K 7.5K !6K R83 R82 R81 RS0 R79 R78 R77 R76 0% u% J R85 R84 = 3.9K R75 = oo • t 4 < k- 4 Miometeo 2to Eject • ,_a0v_0 ! I i • :L,_ % _.-_V_MU_'_M%;_Ra.e I " / ...... . _ Surve m _ _ Yor' ) ML "I Z60 e -,1 _'_e, _"_ _*_"_'_- z es_ r roceeure xor I. IS[ .,_,m.m,.,_.--_ 2. IE_OIK _, 3. CAtlNOT II[WOII(ED 5 ...... I[ _ARTS_ DlS_O$iYtON 4. P.[CORD ..... $40534 I - "R EV_S00,s .................. .... ' DiiS¢l PTION 1 --_---_'--, "':-' _ _ il uI FF SYN ' l , ., .... ........ ,__DATE I CK*D / APPrOVaL - ." Lc_ O - o3 L_,_ I _,,_,_ t__ .,,!',_0_._ ',_0_._ • _- _===='=_ -__,_'i'0".' _'"__ I- - Don ":' J_ L-7-6,5 Digital III Readout and l ,_..! I I " " _ARSFI_LL _-I -#t,_'-i_n':_x,_0_-""-'_... Rose/lb _q'_'_._:-'; Detector, 1v[Lu_veyo,.LABORATORIES Commar, d__o_,,'d Z60-1 _ .... S _..,_._.._._ E]ecta . . 5" £-_-" _ T%st ProcedureSot "'_ ..... " . $40534 7 _<_l i'*_:L-_-c_-_-_'_ F _'." _ --'"" ....... _"_i_--__ -''- ..... : -- " , t 1.0 SCOPE 1.0 ,_------ S__cope. This procedure describes the test required to verify proper operation of the electronics on Digital Readout and Commands Board, This assembly 513Z7-I01 is a portion of the Surveyor Ejecta Detector ML 260-I. Z. 0 APPLICABLE DRAWINGS Marshall 51287 Laboratories Sheet 1 Schematic Matrix Digital Readout and Commands Assembly T51311-I-i01 _'_ u¢_ O 51327-101 u] 3.0 TEST EQUIPMENT (Equivalent 3.1 3.2 3.3 3.4 3.5 3.6 Oscilloscope Plug-In units are acceptable) Type Type 535A. CA. Model 481. - Tektronix Unit - Tektronix Digital Voltmeter Volt - Ohmeter Pulse Generator Power - Non linear Systems - Tr_plett Model 630NA. - Intercontinental Instruments Laboratories Model Incorporated, 865B. PG-Z. Supply - Harrison 4.0 4.1 PRELIMINARY TEST modules Make a continuity check from and tie points. Apply 3.0 _:.Iv to P3-7 all pins on J4, J5 and P3 to proper 4. Z and ground to P3-Z. ".% _.._)._,,-'%,_. r,. I _. K _-_-__ _ o._o.,,'--r'--'-'--'_ A_,p_OV_O _ _ ___: ............... NARSHALL Comm_nd_ Su_voyor Board . LABO_ATO_,IES Digital Readout and Test Procedure EjectaDetector, for ML , i = " 260-1;_. " S40534 --"= i FORM ML 7 7 H_. CODE _,ae_z3ia6 .I , 5.0 DIGITAL READOUT 5.1 Apply a I00 + z cps square wave .i ± . Iv to 1.5 the scope on the positive going edge. Observe Section waveform 5.1 3.0v on ± , iv to P3-21, Syncronize t_ 5. i. i u Z9-6. Should ± .Iv. be the inverse of the square wave in d- .iv to'.Iv 5. l.Z Wave pulse form at ZI0-6 should width of 3.0 ms be a positive pulse .iv • . iv to Z. Zv + . iv, 5. i. 3 Waveform amplitude at ZII-6 should be a positive pulse delayed by 3,0 ms + . 3 ms, . Iv • .Iv to Z. Zv + .Iv, and pulse width ZOO _sec ± Z0 _sec. Observe a negative 4- .iv to .iv ± .Iv on going pulse Z12-6. delayed by 3.0 ms xf t_ (D 5.1.4 Connect ZZ-6 to Ground. =_.3 ms, amplitude 3.0 Waveform layed by u_x" 5. 1.5 at Z13-6 should be a negative pulse 3.0v ± 01v 3.0 ms :_ .3 ms, pulse width 30 _sec ± 5 _sec,, to .Iv • .iv, de- 5. I. 6 Syncronize scope on Z19-6, negative edE.e. Observe waveform at Z14-5, It should be a square wave starting at . iv + . Iv and going to g. gv + , 1 at i0.0 rns delay from sync_ Frequency is 50 cps (g0 ms). Check Z14-6 wave inverted. OL_erve waveform at Z15-5. It should be a square wave starting :h . iv and going to Z. Zv :_ . 1 at Z0 ms delay from sync. Frequency Z5 cps (40 ms). Check Z15-6 wave is inverted. Observe waveform at'Zl6-5. It should be a square wave starting _: . iv and going to g. Zv ± . 1 at 40 ms $elay from sync. Fzequency cps (80 ms). Gheck Z16-6 wave is inverted. Observe waveform at Z17-5. It should be a square wave starting + .iv and going to Z°gv ± . 1 at 80 ms delay from,sync. Frequency cps (160 ms). Check Z17-6 wave is inverted_ at ,iv is 5.1.7 5. 1.8 at .iv is IZ.5 5.1.9 at .Iv is 6.25 °....._ '.... _J__ II L/' FEB ------I _. ' I_1 ........ _pp_0v_0 _ "-"-" IARSHALL Comma d oardSurveyor' LABORATORIES DigitalReadout and Ejecta Detector, Test Procedure ML for Z60=I . __-.... $40534 -_-_ •"FORM MI.. 77 H_. COD_ NU_SE_ _3Za6 ' ? ; 5.l.10 Observe tude is waveforrn 3.0v ± .1 at Z17-8. to .iv • .iv. It should be a negative going pulse. Pulse width is approximately 5.1.4 and to 3. Or. the Ampli- Z0 }_sec. pulse in sec- ._ / 5.1. 11 Remove Ground that was connected in Section tion 5.1.10 should disappear. Connect P3-35 Replace the Ground to ZZ-6. Observe 4 b 5.1.12 _ o 5 ' 1.13 5.1.14 5. I. 15 _ I 5 1.16 tf_! waveform at Z7-6. It should be ; a positive going pulse, ± 40 _sec. Also Z41-5 Reset Observe Remove Observe generator Z3-.5, P3-35 Z3-5 described Z4-5, from Z4-5 .iv • .iv to Z. Zv ±. Iv. should be at .iv ± .Iv. in Section they 5 • 1 to 1 cps. be Pulse width is 400 Fsec "i % "i Z5-5, should at 2.2v ±.Iv. _: ¢ c_ 3.0v and connect it to Ground. Z5-5, _hey should be at .iv ± .iv. [ o rn 5 1 17 Place scope on ZIZ-6. Within one second after the removal of the wire on P3-35, a negative palse will appear. A total of sixteen pulses, one second apart will appear. After which, the output at Z1Z-6 will return to 3.0v and hold. I _ 5.1.18 5.1.19 Connect ZZ-6 to ground. Connect }_3-35 to +3.0v. Observe Pin 5 of each of the following modules. Z8, Z0, Zl, 22, Z3, 24, 25, Z5, ZT, 28, Z9, 30,31, 32, 33, and 34. The output at Pin 5 of the modules Re:hove Repeat The P3-35 should be 2.2v ±.i. .I :_ ._ 5.1. 19.1 5. I. 20 5. i. 21 5.1.Zl.l 5.1.22 frorn 3, 0v and connect it to ground. Section 5. i. 19. should be .Iv • .iv. output at Pin 5 of the modules all connections except Remove +3v and ground. ¢ 5. Z Command Signals. o;, ,: ! "" _._:¢.K6_ k_"_aovs--'-_'-'_ '_"_----_ _ Commands Board Surveyor :] ' _,._4_g_,N|U),'_I gO Ejecta Detector, ML Z60-1,_k :::--'--'T-"-_ Test Procedure for . :j-{ ] ..... . _ -- :._ :.-- . __"-.-_r_l_. ". _x - . -.. FORM ML 7 7 CODZ .3Za¢) _._ • " .,. _ _ ;:,.. . _=m = mm,s.-'t| __. _ 5. Z. 1 5. Z. 2 Apply + Z9v ± .5v P3-8. Apply negative going pulse to P3-11. }_sec, at 1 cps. Observe positive pulse at Z38-6, 700 }_sec ± I00 _sec. Observe positive pulse at Z37-6, Z0 }_sec ± .2 _sec. Amplitude 3.0v, pulse width I00 ------ 5.Z.3 ' .Iv 9= .Iv to 2. Zv ± 01, pulse width bi _15. Z.4 ! .iv 4-.Iv to Z. Zv ±.i, pulse width 1 5.2.5 J , '.! [ [ Observe positive pulse a£ Z35-6, the amplitude should be 0v to 29v + .2v, pulse width Z0 }_sec ± oZ _sec. Observe pulse a_the junction of R 1 and R Z. The amplitude should be 23v ± iv. Risetime 2Znsec _ .5rrsec. [ 5.Z.6 _ [ I Connect Ground to P3-9 should disappear. Remove Ground from and then to P3-10. The puls_ in Section 5. Z.5 [ 5. Z.7 [ , 5. Z. 8 I [ ! 5. Z.9 , , 5. Z. i0 [ 5. Z. Ii ' ! I P3-9 and P3-10. Observe pulse at Z36-6. It should be the same as in Section 5.2.5. The pulse at the junction of R4 and R3 should have an amplitude of Z3v ± Iv and a rise time of 2msec ± .5msec. Connect Ground disappear. Remove Ground to P3-10 and P3-1Z, the pulse in Section 5. Z. 3 should from P3-10 and P3-12. Observe pulse at Z39-6. It should be the same as in Section 5. Z.5. The pulse at the junction of R6 and R5 should have an amplitude of Z3v ± .5v, and a rise time of Zmsec ± .Sm_ec. Connect Ground to P3-10 and P3-13, the pulse should d{sappear. '5. Z. IZ i l I i I I 5.3 Commands Connect Observe amplitude (Enter Data) Ground to P3-10. It should be a square wave 1.0 ± .5 cps I 5. 3. I ] 5.3.2 the output at Z44-18, 3.0v ± . i to .Iv • .iv. I I I I I S _( P_,H EO Digital Comma.dsoard . Survoyor L0RAT6RIES ___,__._. AP_Ov_o '--"--"----" ._ Ejecta Detector, for ML Test Procedure Z60-1 '_ST'_ " $40534 mU z .___''2.__ ______ u_ Readout and ---=___.T-..__, L -'-------"--'ML 77, "--- ..... " ........... Mm-C,'f'EuzezRz3z26 _H[ET 5 OF -, " l' FORM 5. 3.3 Observe the output at Z43-6, It should be the inverted signal of Z44-18. Amplitude 3. Ov :_.Iv to .Iv + .I. Observe Z43-6, the output at Z42-6. amplitude 2. Zv ±.iv It should be at one to .iv ±.I. half the frequency of 5, 3.4 -.' _ 5 3 5 _ Observe the OUtFat at Z40-6 at a repetition rate of one half ± .Iv. It should be a positive pulse 200 _see wide Z44-18. Amplitude .Iv ± .iv to Z. Zv : , : ?. 5. 3.6 ! I i Observe pulse at Z19-6. It should be a negative going pulse 3.0v ±.Iv to .Iv ± .I and approximately Z0 }_sec wide and at the same rate as described in Section 5.3.5. Monitor Z41-5. If not at . lv 4- . iv, momentarily ground Pin 5. output should return to Z, Zv 4-.i on the leading edge of Z40-6, Monitor Connect Remove Observe Z42. Momentarily Momentarily Z40-6. P3-15 Ground Z4Z-6. to Ground. from The pulses in Section 5.3, 8 should disappear, The 5. 3.7 i ! c_ ug o 5.3.8 5. 3.8. ! 5, 3.9 0_ ,% P3-10. ground pin 6 of _ _ 5. 3. I0 If it is not at . Iv ± .iv, momentarily 5.3. ._ _ ll Ground connect , P3_17 P3-16 and Z42-6 and should Z4Z-6 return should to 2. Zv ± ° Iv. return to . lv ± . iv. 5.3.12 to 3.0v ? _pAr_O _a_'¢K¢0..... _ ['_ _ . .:___ I I: .... 1 Digital Readoutand ] ML Z60-1 _ Surveyor _ ' , _ _,_.p_ee._ L_[J_'_|U_|r._ 05 4 ....... -_ - -- ............ | Ejecta i CommandsDetector, Board _....... :q ' FORM " ': ML 7 7 : ...... ":::- Test . .... Procedure - ....... for L14 3 ' 14Y(},-CODE Nu_ZR 1 i_$a6 ..... .-. a. t,,,111, ................. l. _SE 2. II[_0I_K 3. CA_I_T Ill II[WOHED 4. ItECOitO ........ I II l,r '""" 5 I I ...... RE _. O_ V! m S iii " $40535 I I _ I % / F.ET ' SNDEX _CLE _ REV SHEET )" Z 3 4 5 I] I I po_'o_ Bo_d, ? s_pply _ARSHALL GSE - Su:rveyor ' To_tspooi_i_,tio_o_ LABORATORIES :. . __ • s 4o535 _ . ,3E ___ _i _%' _"_'_-..I'_.. _...... _-_0 _,c_-_-.-.- I_; ;_ .z.,_ v-,.__ i _-°_ 1__" _. .... -i-_/.-t,.d _ . _ ..... ............. !_,_, o/ _5. .__ 1o 0 SCOPE i. i This procedure operation of the power describes the tests required to verify the proper supply board (Assem. 51328) this is part of the Surveyor's u Z. i ground support equipment. Z. 0 APPLICABLE DRAWINGS Power Supply GSE, 51328 ejecta detector, GSE Surveyor Board Assembly, 2. Z Schematic 51287. t._ diagram, micrometeorite m°_ O Z. 3 Mylar Matrix, 51305-101 3.0 TEST 3. i 3. Z 3.3 ; ! "_ $.4 3.5 3+6 Oscilloscope, Plug-in Power Tektronix, Type EQUIPMENT Model CA. Laboratory, Radio, V-71. Model Type 865]5. KI3ZL. 535A. ,' ,, pre-amp., Supply, Decade Harrison Resistor Box, General Cubic Digital Voltmeter, Transistors, model_ ZN1455_ 3 eaY/I' -- "'"" :"'!:;'__;:'"::::__ -_,A._o " IF _, :+ Power Supt+Zy oard, B "__ GSE :...... . ---------.... ............ :__ Test peemcat*o++ S for :, - Surveyor, _ ' LABORATORIES I1 _ s_z¢" S 40535 Z / __]_ o_ , _--'_ovto--"_ --'-_--- -----" _ ,, . ................... "+'-"''--" --+;...... '-- ' , FORM ML 7 7 CODE NUMB :+ ,,,_, _5 . 1 z L 3 ; 5 6 7 , 8 ll : 9 q IO L- _, 4. I .,4 * I ', _":': : ' _ _ -'-"- " + 3K 30 Volt Load I'OK Heater Voltage Adj. (Z2V) + " 2-50,, _...x_ 3V Load-/ 28V Load t'--V%_e_--_i... ' _i IOK Z8V Adjust RII0 'I m u_ 14 13 12 19 o i ) _ QI01 17 j 16 18 i 3 I 4 i L,,,/" b_k O 105 QI03 500_2 2W Heater Load i . -I 3 1 +I 3 ._ .4 4.0 4.1 4. Z I Fig-are 1. t TEST PROCEDUR, _. to board _s per print 51287. RI04, and Rli4. Check continuity frd_x P8 connector install nominal Temporarily Make values for R]03, I. m 25 ma. - 13 (+) and P8 4.3 4.4 -. 5;,. test hook up as in Figure Limit input current to 400 ma Apply 13.3 volts _:0.13v to P8 4.5 4, 6 - 14 (-). (+) and ZI01-2 (-). ,:r :: " -.., Select RIOZ for ii. 0 volts ± 0. Iv at Zi01-17 4.7 Select Rl03's value for a _'400 cps ± I00 cps square wave and an amplitude of 22 volts ± .5v at the converter trans:/ormer SP 30279 Pin i and 13.3 volt return, 4.8 Adjust the external loads. 3 volts at I0 ma : t _:L_AS_ '__ .__ ............ _): ---;':; _,_" _ ",;",-,', _ i_}_3_ _ _ , , -_ ......' Poworupply s - .......... GSE '-----] _........ " MARSHALL " " t_cxeo_';_'=° |_ k -Specx_xcatzonSUrveyor, _ v "_: _'1 FORM ML77, .... 1 , r • ZZ volts at 50 ma Z8 volts at ZO ma 30 volts at I0 ma : _ _q 4.9 _d Volts Supply 4.9.1 4.9, Z Adjust all0 to Mid position load. max. ;__..._ Select I_I14 for Z8 volts q- .ZSv, maintain a ZZ ma 4.9.3 Check range of all0 from min. Z6.5 + 0.0v - .3vto Z8.5 volts + .3v - 0.0v. Select RII4: for this range of allO. o% 4.9.4 4.9.5 4. 10 Tack solder RiI4 in place and record value. of test. u%. o 50 Maintain a z0 ma load on the 28 volt line for balance 3.volt supply - 7 and ground with a 10 rna load. This 4. I0.1 Measure voltage at P8 should be 3.0 volts + 5_0. 4.10. Z Remove external load. The voltage will stillbe 3.0 volts ± 570. 4. I0.3 Reconnect 4.11 Heater I0 mR load for balance of test. voltage (ZP-volts) P8 - 16 (+) and P8-4 4. Ii. 1 Adjust RII5 for 22 volts q"0. iv across (-) with an external load of 50 ma. 4. ii. Z Maintaining a 50 ma to a maximum of Z6.5 ± Z00 my. 4. II. 3 Return load, vary RII0 from rain. of 16.5 =%200 my to ZZ volts at 50 ma for balance of test. 4.11.4 Insert an ar_meter in series of emitter of QI05. This should read not more than 10 ma. 4. II. 5 Caution: Set meter tQ 60 ma scale. Remove external loP, , d emitter current will jump to 50 ma ± Ig0, If needed, reselect all Z for proper emitter current. _ t 4. II. 6 Reconnect 50 ma external load. Restore emitter circuit. , %-_-E_-b---.... ..... _...... J ...... I Power Supply GSE - Surveyor, Test ' Specification for 'LABORATORIES 35 - ] MARSHALL FORM ML 7 7 x_. coD_N_ x3z_6 • .; il • 4.12 30 volt supply. for 30 volts ± . lv as read across P8-1 (+) and PS-Z (-) 4. i2.1 Select R104 with a 10 ma load, 4.1Z. ZTack solder load R164 from in place 8 ma and record. Voltage of test. regulation shall be 30 volts 4.1Z. Iv.3 Vary ±. 4.1Z. 4.13 4 Return to 12 ma. for balance load to 10 rna Tctal Current 4.13.1 Vary input to power ZI01-17 supply board from 12.0 volts to 14.6 volts. at ii. 0 volts ± .Iv. _ ° The voltage across + and ZI01:-Z shall remain 4.13. Z Record total input current at 12.0 volts and at 14.6 volts. l _-_P_:_ ..... _ o,,_o, _ :_ ...... -----.--- _' . GSE o r Supply Bard, - Surveyor, ....LABSRATORIE$ .... 1 P,,IARSHALL ,. _ ' LAB6R_TO_ES • I FORM ML 77 _ .... -----=-_- : Mm.coD___ N "----':- ,.o O L, ,L ) e i e; 2 :5 " ' __ .... . .... _-°-_' I: _ I :r.:' _:_._, ]_ PAH E0 _ _ ARSHALL . IOR._TDR!ES LA -._-=_'-_:-----_/.-_-_ Sonsor Stimulus Zoara D. Rose/go 10/29/6 Surveyor Ejecta M_ _6o-_ Detector ,, _'_'P :') _..,. _ i Specification For : _M%_ _o-'£n_--.... _4 ' ...... , I. 0 SCOPE --"_ This procedure describes the test required to verify proper operation of the electronics on the Sensor Stimulus Board. This Asscnnbiy 51326 is a portion of the Surveyor Ejecta Detector ML 260-I. 2.0 2. 1 2.2 2.3 3.0 APPLICABLE 51326 DRAWINGS Assembly', Schematic Sensor Stin]ulus 51287 Sht. 3 51324-101 TEST l%_atrix EQUIPMENT or equivalent, shall be used 3. 1 The fo]!ov-ing _tandard test equipment, to check oat the module. .. L 3. !: Z 3. I. 1 3. I. 3 3. I.4 3._I. 5 Plug-In Unit - Tektronix, Oscilloscope - Tektronix, Digital Voltmeter, Type CA. Model 535A. Systems, Model 481. Non-Linear Volt-Oh.rrn-neter, Tripiett _{odel 630NA. Pulse Power Generator --Intercontinental Lnstrun_.en%s Lncorporated, PG-2. Laboratories, Model 865B. : 3. i. 6 4.0 4.1 4.2 5.0 5.1 Supply - Harrison TEST PRELIMINARY Make Apply a continuity check 3.0v to 56-13 TIMING from all pins on P6 to proper to 56-41. rnodu]e pins. and ground STL_IULUS Apply a I. 5v negative going pulse, 100}_sec pulse width and 5 cps repetition rate to J6-19. All amplitude _ind timing n%easurements unless otherwise specified. Should be within :h20% NOTE: ( RELEASE ------------ Sensor Stimulus Boa_ _,_ARSIIALL i D,ao___/____ _ Surveyor Detector Ejecta ! TestSpocm_ation ,z'-------'----]Fo_ $40536 L__ _,_o_Eo-- .... _____.. i L_,_; I " : ",-:.'"_4 _:_;:''_-'_ 5. l, 1 wide. 5. I, 2 i _ wide, _] 5. I, 3 u wide. 5. 1.4wide. 5.1.5 going 5.2 -- The output at Z45-6 should be a Z. 2v -__; v positive pLtlse 50_sec I The output at Z46-6 should be a 2.2v ± ,Iv positive pulse 450_sec J I I The output at Z47-6 should be a 2.2v + . Iv positive pulse 45 msec The output at Z48-6 should be 9. 2.2v + . lv positive pulse Z0 _sec negative The output at Z49-8, pulse Z0 _sec wide. Connect Z50-8, and Z51-8 should be a Z. 8v ± . lv the following wires to gnd. IP6-3, 6, 30, 40. ,,o 5.2.1 The output at Z58-6 should be positive pulse Z. Zv + .Ix delayed 0"% ,._ from the leading edge of the pulse described in Section 5, ! by less than 5 }_sec, o and a pulse width of Z00 _sec. 5.2.2 Disconnect Section 5. Z. i. gnd. from P6-3, and observe pulse as described in : _ 5. Z, 3 _isconnect gnd. from P6-6, and observe pulse as described in Section 5.2. Z. In addition o,pulse should appear delayed by 500 _sec :_50 F_sec. 5.2 4 Disconnect gnd. from P6-30, and observe pulse as described Section 5. g.. 3. In addition a pulse should appear delayed by 50 ._-as 5 ms. ± 5.3 Connect the following to gnd_: P6,-8, 7, I, 25. in J _ _- from < , % _% q --%_ 5.3. I The outpu_ at Z66-6 should be pos_ve pulse 2.2v ± . Iv delayed _e !e__ding edge of the pulse described in Section 5. I by less than 5 Msec. , ± 5 ms. from P6-8, and observe pulse as described in and a pulse width of 5 ms Sec_io_ 5.3.2 Disconnect 5, 3. 1. Disconnect gnd. 5.3.3 Section 5.3.2. gnd, from P6-7 and observe pulse as described in : _, 5.3.4 Disconnect gnd. from P6-1, ;,nd observe pulse as described in _e_t_on 5.3.3. In addition a pulse should appear delayed by 50 m sec. ± 5 rnsec. _/_L-_,___--_ c_.c_.0 APPROVC.O -- Board Surwyor Zje taDDotector _ ' LAD r vnR! Su .... Sensor Stimulus ML 260-I _ Test Specification For ,w, --'F_--'_' • ,.---.o...,_; !" I - ._ _,t,,l_ 3 Ii¥ OF' ,,.; FORM ML 7 7 . 5.4 Connecz the following to gndo 106-9, 29, 2. pulse 2. gv ±.lv 5. 1 by less than delayed 5 }_sec., * from and "--'_y 5.4. 1 ::he output at Z71-6 should the ';_adlng : edge of the pulse described a pulse width of 5 msec ± . 5 msec. gnd. from P6-9 be a positive in Section 5.4.2 Disconnect section 5.4. I. 5.4.3 Disconnect section 5.4.2. 5.4.4 Disconnect section 5.4.3. 5.5 and B+ 5.6 Re]hove return. and observe pulse as described in ux _,- gnd. from P6-Z9, and observe pulse as described in _ gnd. from 106-2, and observe pulse as described in all wires that have not been removed p-evlously, except B+ 101ace scope across P6-15 and 16_ _cope return on 106-16. 5.6.2 Apply a positive pulse I. 5v, IC .see., pulse width, and 5 cps repetition rate to pins 106-20, 4, 5, Z3 one at _ime v.,_iie observing a pulse on 5.6. I Apply 3v to P6-14, and gnd. to ?. -25. the scope. 5.6.3 pulse width _ 5 6.4 5 7 5 8 i The signal as seen on scope should be neg_ti:.,_oing 0.1 to -3.0v, g 400 _sec with _ i00 _sec rise time. _The fall tinge <- 2.0 _sec. Connect Repeat 106-18 to and. section"5.5 106-17 and 34, scope lreturn on 1°6-34. "_ The signal in section 5_ 6.2 should disappear. Place scope across Apply 3v to 106-Z8. 5 8. I 5 8.2 Apply pulse as in section 5.6, 2 except to pins 1°6-20, 4, 24, ?.5. _¢[sec., 0.1 to -3.0v, '_ 1 ms rise time. 5 8.3 The signal should be _2.0 Fall time should be < 2.0 _sec. 5.8.4 Connect P6-18 to and. The signal in section 5.8.3 in section 5.8.4. should disappear. 5.8.5 Remove connection made disappear when grounding P6-33. 5.9 on 106_'_4. Remove gnd on P6-33. The signal should again l_eplace scope on 106-27 and 34 scope return ;P.g go .PA_ ., -. D. !_ose/I/_> -._ __ Surveyor Ej_cta Detector __ _ _ _%_T_I_ .... " -I _' AP_'ROVEI) Test Spec'ffication For MFG, CODE _, ' _ .__" j_ '_:- -- '_._ . "i I I ! .... 5, 9. I 5. 9.2 -'_ The signal !should be as in section 5.8, 3. C _nnect P6-18 to gnd. The signal in section 5.9. 1 should disappear. 5. 9.3 Remove connection made = disappear when grounding P6-32 Remove 22. Repeat gnd. on P6-32. in section 5.9.2. The signal should again 6.0 "----- return on P6 '_ 6. I Replace scope on P6-39 and 2Z scope section 5.8.2, gnd on P6-33. through Replace section 5.8.5. scope on P6-21 and ZZ scope 6.2 Remove return on P6-22, -% "_' , t13 6, 2. 1 o _0 The signal should P6-18 gnd be as in section 5.8.3 :;: z 6.2.2 6.2.3 _7"6-32. C_nnect Remove to gnd. The signal in section 6.2. i should disappear. The signal should disappear when grounding on P6-18. g'L ;4: oX f % i e f, • ose ___ S rveyorje=t Detecto: . Test Specification For .U ,q_-l , _; ---_--'-------_--'_. FONM Mi 7 7 CODE NU_mE_ _a6 Z "" . - . ,j ........ - , , SHEET ,_D_×_ aH_x REV 1"_. _osen_erg/g) i z 3 4 5 6 7j8 • . I [ i [ ...... . - J I P 9/14/6_ ..... 1 _ L_.r_ov_.o, " , ,-_---"'_'-"--_ _ Test SpocificationFor 840519 ,¢ '"1 " ' "! '!Ira ---------q ,? ._::,, _ _ 1.0 scoPE required to verify proper Supply Blivet. This assembly, Electa Detector, ML 185-i. 1,1 This procedure describes the tests operation of the electronics in the Surveyor Power 51122, is a portion of the Surveyor Microrneteorite i i T _ 2.0 2. i Z. 2 2.3 3.0 APPLICABLE Marshall Marshall Matrix TEST DRAWINGS Laboratories Laboratories 51122 51114 Housing Schematic T51215-I,-2. units are 535A. CA. Systezns,Model 630NA. Model 320. Model Model 246-i. 865B. 481. acceptable). Assembi/, Power Supply JViylars - T51ZI0-1, EQUIPMENT (Equivalent Type Type cr, u% o u_ 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4.0 4.1 Oscilloscope Plug-In Digital Unit, - Tektronix, Tektronix, Voltmeter, Non-Linear Triplett, Volt-Ohmmeter, True Pulse Power R_MS Model Vo],,trneter - Ballantine .Marshall Harrison TESTS inspection on parts Generator, Supply, Laboratories Laboratories, PRELIMINAi{Y Perform visual and welds. check continuity 4.2 Using Triplett Volt-ohmmeter of pins of connectors 252J02 and J5 to proper 5.0 5. I R2 (EM i/i0 POWER SUPPLY value I/I0 on IK scale, terminations. Install the nominal 4.99K I%), and:I%3 (EM of resistors 4.99K I%). R1 (27K l/4w 5_0), b i ---_i_. _---,--_ Su_voyor Supply Powo_ H. 9116/64 Blivet __ Rose_ ------ Spocmcatio_ T_st Fo_ AP;'_OVEO [:]AI_$_iALL ",, LAB0_A_ O_BES _------F o-_--_ . MFG. ,_ FORM ML77 5.2 Connect resistors from J3 to ground according to Table I. Voltage + IZv + + 6v 3v Pin Location J3-16 J3-36 J3-19 J3-11 l_esistor Z. OK 1.6K 330 560 - 7v TABLE I. Power Supply Loads 5.3 o', o Apply +28v to JZ-i and +28v reLurn to JZ-Z. square _ _ o3 5.4 The waveform at Z81-10 should be a 0 ± .iv to 56 _=2.0v, wave. Select P_I so that frequency is 2400 ± 200 cps. 5.5 The voltage at Z79-i differential voltmeter. should be +6.00 ± .10v measured with a 5.5.1 The ripple on the + 6v line should be less than 2.5 my '_ measured on the Ballantine I_MS Voltmeter. 5.6 The voltage at Z79-I0 a differential voltmeter. should be + 3.00 ± .06v measured rms with 5.6.1 The ripple on the + 3v line should be less than 15 mv measured on the Ballantine I_MS voltmeter. 5.7 ± . 10v. Select the value of iAZ so that the voltage at Z82-I I%.I_S is + 12.00 H._i _:¢:--_ _P_',=OVEO 9/16/64 ..... Blivet reotSpecification ' L_,l_Ott,_TOIll Fo. E,S $40519 SHEET _ OF . . " P-ORlvlM L 7 7 ,.... L " ':*:"/"' I..... J,, 5. 7. 1 measured 5.8 ± .070v. on the The ripple on the + 12v line should be less than i. 5 my Ballantine P_MS voltmeter. P_MS Select the value of R3 so that the voltage at Z83-I is -7.00 q U 5.8. i The ripple on the -'_vline should be less than i. 5 mv measured on the Ballandne IAMS voltmeter. 5.9 5.9. i 6.0 6. 1 B Supply Monitor The voltage at JZ-Z5 TELEMETRY Select values. AND should be + 2.04 =h.041v, READOUT RMS o_ _o o u_ 6.1.I Select C7 and C9 (2000 pf NOM), which attach to ZZ4-3, 9 and Z24-10, 17 so _hat the clock output at Z24-18 is 100 ± 1 cps. The amplitude of this square wave should be iv + iv to Z. gv ± Iv. 6. Z i00 =h2p.s wide, The output of Z21, pin 6, should be a positive going pulse .1 ± .Iv to 2. Z ± .Iv occurring every I0 ± 0. i ms. at Z18-12/, the amplitude i; t 6.2.1 A negative pulse should also be observed should be 0. i _= 0. iv to +3.0 :h0. iv. 6.3 Apply a +Sv to 0v negative pulse at a 1 cps ra_e to J3-14. The pulse at Z18-12 (6.Z. I) should no longer appear. Th's " 'riseshould now appear at Zi9-6. Note. Applied pulse has a pulse width of i00 _,_ec. 6.4 6.4.1 square wave of 190 ms. Sequence. The output of ZI6, pins 3 and 5, should be a 50 cps (period'= Z0 ms', whose amplitude varies from +Z. 1 ± 0. iv to 0.1 4-0. iv for a duration < square : . 6.4. Z The output of ZIS, pins 3 and 5, should be a 25 cps (period - 40 ms wave whose amplitude varies from +2.1 ± 0. iv to 0. i ± 0. iv for 190 ms. 6.4.3 The output of ZI2, pins 3 and 5, should be a iZ.5 cps (period = 80 _ns) square wave whose amplitude varies from +Z. I ± 0. iv to 0. 1 + 0. iv for 190 ms. 6.4.4 The output of ZI3, pins 3 and 5, should be a 6.25 cps (period = 160 ms) square wave whose amplitud_ varies from +2. i m 0, iv to 0. 1 =h0.1v. '_ , H. Rosenberg/go )/16/64 Su,.veyor owe Supply P Blivet _ _" .... , 77 ¢ A o.=,5 The output of ZI4, pins 3 and 5, should be a 3. !25 cps (period = 37-0 ms) square wave whose amplitude varies from +Z. 1 ± 0. Iv to 0, 1 ± 0. Iv for 190 ms. 6.5 _--_I ! _I Sync the scope on the negative going edge oelng applied to resistor Load JS-I withand resistor J5-14. should be 5K a the capacitor capacitor bein series to The output The and should Z000 pf. ground. pulse at J5-1 should be delayed no more than .6 }As . The output itself should be occurring anegative 6, 6 at a 1 cps ;ate, golng+3.0 ±0.1vto l_eadout. Sync the scope scope 0.1 :h0.1v, I0 Fts +10 }As, and -0 Msec. pulse ' 6.6. i | 6.6.2 positively to Z on ZI6 pin 5. Connect 1 - II. .4 - _ 6.6.3 Information Output. be at 0v for 25 n_s and at that time the output rise to 6, 0v will be a I00 o u_ 6.6.5. 1 The output at ZI-II should for 5 ms and return to 0v until T = 195 ms, A...--,.A-- j I cycle square wave until the next readout pulse. I I : .t -' -: , ._. I t o.0v --> -..... 0v --> ................ ,+ T =0 T =" 25 _.._ 6.6.3.2 Connect pulse at T = 35 ms J3-9 to ground. The output in addition to that described # T =195 ms at ZI-II should in 6.6.3. I. have a 5 m_ 6.6.3.3 at Z1- _I shoul 6.6.3.1. • 6. as ZI-II in 6.6.3. . .4 _hould i. Remove ground from J3-9 and connect it to J3-,Z2. The output have a 5 ms pulse at T = 45 ms in addition to that described in Remove ground from 53-22 and have a 5 ms pulse at T = 55 ms connect it to J3-Z. The output in addition _o that described 6.6.3. 5 at A-11 should i_ 6,6.3.1. Remove ground from 33-Z and connect it to J3-25. The output have a 5 ms pulse at T = 65 ms in addition to that described ;'_:"' .- " "-'.31. Rosenber_l_o!9116164Bnvet I c._c,,F._ _ J ..... ,.,, ,,,_,.,_,._ Test Spec,f.,cat,o_- or _ " L_U_/UKi 4_'c":s Y 5 " o_." ""*'X _'_ i_126 a_ . 3 "_'_ '' '" : 1 I _. • " . : _.w,.,_,..,,*____ I _'-_4"_ ;_. _OIRI,,_.. ML 7 7. ' MFGo CODENUMBER 6.6.3.6 Remove ground from J3-25 and connect it to J3-6. The output at Zl-ll should have a 5 ms pulse at T = 75 ms in addition to that described in 6.6.3.1. . _ _i _p 6.6.3. 7 Remove ground from J3-6 and connect it to J3-21. The output at ZI-II should have a 5 ms in 6.6. 3. I. pulse at T = 85 ms in addition to that described < 6.6.3.8 Remove ground from J3-21 and connect it to J3-g0. The output at ZI-II should have a 5 ms pulse at T = 95 ms in addition to that described in 6.6.3.1. 6.6. 3. 9 Remove ground from J3-20 and connect it to J3-Z3. The output at Zl-ll should have a 5 ms pulse at T = 105 ms in addition to that described in 6.6.3. I. 6.6.4.0 Remove ground from J3-Z3 and connect itto J3-3. The output at ZI-II should have a 5 ms pulse at T = 115 rns in addition to that described ._ -_ : , u] " 4 6.6.4. i Remove ground from J3-3 and connect it to J3-24. The output at Zl-ll should have a 5 ms pulse at T = IZ5 ms in addition to that described in 6.6.3. 1 6.6.4.2 Rtmove ground from J3-24 and connect it to J3-5. The output at ZI-II should have a 5 ms pulse at T = 135 ms In addition to that described in 6.6.3. I. 6.6.4.3 Ren%ove ground from J3-5 and connect it to J3-32, The output at Zl-ll should have a 5 ms pulse at T = 145 ms in addition to that described in 6. 6. 3. I. 6.6.4.4 Re.move ground from J3-32 and connect it to J3-26. The output at Zl-ll should have a 5 ms pulse at T = 155 ms in addition to that described in 6.6.3. i. 6.6.4.5 Remove ground from J3-Z6 and connect it to J3-4, The output at Zi-ll should have a 5 ms pulse %t T = 165 ms in addition to that described in 6.6.3.1. :_: -% _ _{ l L i ..... '_P_os ---__ Surveyor enberg Igol 9 /16164 I Blivet Test Power Supply _ [_[%_AL, B- Bpecification For •L BO2ATO ES i " , _ _.6 " " . • L_._._J.._,_i .... ..J _ I FO M ML'7 7 12' 6.6.4.6 Remove ground from J3-4 and connect it to J3-8. The output at Zl-ll should have a 5 ms pulse at T = 175 ms in additicn to that described in 6.6.3. I. ---.---6.6.4. 7 Remove ground from J3-8 and connect it to J5_7. The output at Zl-ll should have a 5 ms puls_ at T = 185 ms in addition to that described in 6.6.3 i. 6.6.4.8 6.6.5 Remove SCO ground from J3-7. Driver 6.6.5. 1 The output at J2-13 should be a 0v for 25 ms, rise to +6.0v for 5 ms, fall to 0v for 165 ms, and then return to a +3.0v 100 cps square wave. The rise and fall time should be "_ 400 }_sec. 6.6.6 o-- Mic Accumulator Inhibit of _n o c_ 6.6.6. 1 The output at J3-33 should be at + 3.0v for the first 120 ms the readout, fall to 0v for 30 ms, and then return to _-3.0v. 6.6.7 Film Accumulator Inhibit should be at +.3.0v for the first 150 ms and then return to + 3.0v. _---_ 6.6.7. I The output at J3-30 of the readout, fall to 0v for 40 ms, 6.6.8 Detect End of Readout 6.6.8. 1 The output at J3-27 should be at + 3.0v for the whole readout of 200 ms. At Z00 ms, a n_gative going pulse i00 ms wide every 10 ms should appear at J3-27. 7.0 7, 1 COMMANDS Calibrate Command 7. I. 1 Apply to J2,-10 a positive going 20 ms 0 to 15v pulse with a 2ms rise time and a . 1 ms fall time. _4,t 3-31 the output pulse should be a negative j going pulse 2.3v • .1 to . ]v ± . iv, pulse width of 20 ms ± 2 ms. Su v0yor RSHLL P m. _osenoerg/go i_----'---Test Specification For • _J:,PROV%0 ' 54051 ; ":k_ _ u * FORM " ,j,,,', _ r ML 7 7 , .-- L _ MFG.CODE NUMBER 131a6 e, • c. 7.2 .IS _ _ .. _ % Clear Command 2 ms going h 7.2.1 Apply to J2-11 a positive going 20 ms, 0 to 15v pulse with a rise time and a . 1 ms fall time. The output at J3-28 should be a positive pulse, from 0. lv, _: 0. Iv to 2.3v • . iv, and 1.5 rr-s :t= .15 ms in duration, 7.3 7, 3. 1 rise time Readout Command goin L Z0 ms, 0 to -r 15v pulse with a 2 ms Apply to J2-22 a positive a;_d a .1 ms fall time. _ 7.3.2 in amplitude 7,3.3 The outputat Z23-11 shouldbe and Z0 ms :hZ ms duration. The output at Zl-ll anegative pulse, 2.3v ±.iv ': should be as described in 6.6.3, I. _ m g 5." v " H. l-.lae Generator, u -_ Power Supply, Intercontinental _la.'rison Lab. , Instruments Model 865B. 4.0 __,LI.MINAR_ _'_"_ " v PROC_:DUPE _- 4.1 USing a Triplett Ohmmeter, check the resistances between pins A & B h, Table I, use IK scale, positive lead on A. the R_L[_e!__ _a_0 _/_6 / 64_ Test Specification for Surveyor ,_ :_ _v_ a _ _'_-_ "_ _ _-_. • _ r_,_-_P._ FORM ML 7 7 ---;-........... :: Mm. _C0-D_ u_s_ _._la6 _ • .: Resistance Between Resistance Should Be P3-16 A P3-16 _---'-_ P3-16 P3-11 P3-19 P3-36 O0 P3-11 B >50K (_) ,',i 0K >IOK >1OK _> 9K >8K -0-0 -0- P3-36 J!_5 _ 0_ P3-19 P3-36 P3-36 P3-11 P3-i9 J1-7 Jl -13 Jl-i 5 P3-19 ,_I -8 0 P3-13 ue_ ,,_ o 5O P3=16 P3-11 " " 4. Z 4.3 Record all final select components in Laboratory Notebook. Refer to Sec. Z.2 for types and tolerances of all select components. 5.0 MIC PULSE HEIGHT ANALYZER 5.1 ; :'_ If(a). Select Values 5. I. I Install the following resistors and capacitors from Table R or C R7 R8 "_ C35 CZZ CZ3 RII , RI3 .'/ Value 1.00K 4.99K 360 pf I000 pf i000 pf i. OK 1.OK ,,. ,, TABLE II(a) - Select Values Mic PHA; in the '" ., 3.a_A'_._ -- _e_e_sed _-- ..... - .... _ _.........- ......." Test Digital Specification t cH_c_C'"-'--_ .......... fo,s_oy_ ,Bli -' . _-_ t 1 _ ' _-,_RSHALL LABORATORIES i ' " , .... ,r t [ c_.v.,./ ---'---'--'---'---- ..... ' '_" ........ - _. COD_ . -__-_" ....... .... NU_ :L31a ------:'-' "'!_' -/7 ' FIGURE 1. ,' . ._ '" "p_ PA._6" _--_ _ _ Test _orurveyor S Specification : : LABO_ATO_IE$ 3SEET 4 oF M_X}. CODE NUMBER 13126 FORM ML 7 7 ,,,,,., ',p 4 ( 5. Z For the checkout and calibration of the Mic PHA, two Rutherford .... _: Pulse Generators are used in conjunction with a sine wave generator through a gate circuit to provide the Mic Amplifier Simulation, Data Reset Pulse, and detect end of readout pulse, See Figure I for connections. 5J u] _.-----, 5. 3. Z 5.2. i Set P1 for a negative-going once every. 130 _ns. +X.0 to 0V, 1,5ms pulse occurring Set P3 to trigger external on the leading edge of PI. Set pulse delay for 50_ sec, 7_mplitude Z. 0V to 0V negativegoing, and pulse width for i. 5ms. pew± r making sure that none of the supplies I. are shorted. 5.3 o0 m o 5.4 Apply Make 5.4. i the connections Set and 1.5 130 shown in Figure _ up the sine wave generator to a^4.0V p-p, 100KC wave observe at the emitter of the gate transistor a ZV p-p, n%s burst of a 100KC sine wave occurring once every ms. 5.4.Z C/neck to see that the Data Reset pulse (the negative going 1.5 ms. gating pulse) appears at Z26.8, ZZ7-8) ZZg-8, Z51-9, Z53-10, Z32-8, Z34-8, Z35-8, Z36-8, and Z37-8. A negative going +2.9 ± • IV to . i± .IV i00_i_ pulse appear: at Z53-8 occurring once every 130 ms. Adjust C15 ± ZiPs pulse. the output Until the output is a Z.Z ± 0. ZV should 5.4.3 5.5 , : 5.6 Observe Z50.-6. 0.1 ± O.1V, lO0 5. 5. l At Z48-16, to shoul3 be as in Figure 2. Reduce the amplitude of the i00 I_C sine wave at Z5Z-6 should rise fuom 0V to + 3.0 4-0.1V to 0V, to OV. The outpat for i00 _ts and return ','1 5.6.1 "r. Increase the amplitude of the _ine wave until the comparator output, Z44-7, remains in:the up state" foi- 2,50 _s. The output Of Z51, Z51 =3.5, should al_o rise to + Z ± 0.ZV for 250 _s. '_::' / ° i. for Surv, eyor , , a_a_'._0_¢_ I _ ---- ". ..,......... ... , • ' S40548 I l t FORM ML 7 7 ^ .. ' -!" .-' : _ 5.6. Z With the J.nputsine wave Z_9-6, should remain for 30 '_us, and return as in5.61, the output of Z49, rise to + Z ± 0 ZV at OV for to OV. should i00 _s, 5.6.3 A positive going pulse appear at P3-14 for as long as the i. _ b 5.6.4 Modules Z31 delay between through ZZ9 should be counting the simulated Pl and PZ. mic hits. Pins 3 and 5 of these modules should vary between 0.1 ± 0.1V "' 5.6.5 Further and +Z.Z ± 0.1V. the sine wave amplitude until the comparator increase output, Z44-7, is in the up-state for Ires, Pins 3 and 5 of modules ZZ8 through ZZ6 should change from + 0. I ± 0. IV to + Z.Z ± 0.1V. u% ,,ol , • \ \ t '\,, i00_s<-- I " 5.9 Adjust CZZ and CZ3 until the frequency to 8KC, of Z4Z is as close as possible 5.10 --"" .b U Applya + 2.5 :E0.0_V peakburst ofthe I00 KC sine wave to Z48-17. Select and record the value of R7 that just causes seven clock pulse to occur. Where this setup is complete, the r of the detector output, Z48-16, should be greater than 250 _s and less than 300 _s. 5. I0. 1 if the value of R7, for any'reason, does not satisfy the conditions of 5, 8, the clock (Z4Z) frequency may be varied a minimum amount in order to satisfy 5.9. 5. II Reduce the amplitude of the sine wave to or. Slowly increase the sine wave ampl_tude until the first clock pulse appears at Z4Z-I 5. Continue to increase the sine wave amplitude. If the clock pulse disappears and again reappears the size ofC35 should be increased. This process should be repeated until the first false clock pulse does not appear. 5. 1 I. I Another indication, other than the first clock appearing and disappearing, of a false clock pulse is that it will occur within I00 _s after the comparator has changed state. co O u) i i I :"/ 6.0 FILM PULSE HEIGHT ANALYZER CALIBRATION 6.1 Se_ec_ 6. I. 1 Values, Install the following nominal capacitors from Table 3. value select resistors and Part R15, RI!, No. R18 R13 Value 4,99K 1.00K EM EM , 1/10 1/10 1% 1% cz0,CZl i000pf TABLE 3. SELECT PARTS FOR THE FILM PHA _P^_v.o J/ e easeo ....... - 5%_.CK_.--'---6_"-""'--"-- Tes_ Specification for Surveyor ,Digital -= .... [':]ASHALL livot 1 . LABORATOIES $40548 s_l.:? MF(}. 7' ov _ : APPROV£O __ _ , ___.___ ' _ -2 ' FORM ML 7 7 :: :_ 6.2 For the checkout and calibration of the film PHA, a I. I. 1. PG-Z Pulse Generator is used in conjunction with the network shown in Figure 3 to generate the f'lm pulse, the Data Reset Pulse and the ,t ; _ detect end of Readout Pulse. 7_- P3. Z7 _'3 PG-Z i . 003_f " ioK. "_, _ lOK ,, --_ P3-1 % __. • • . --]--3K t . FIGURE 6. Z. i 6.2.2. 3_ Film PHA Test Connectors / '_" going that ZOO ms the "r at Set the pulse generator pulse at a 1 cps rate. to put out a positive to the unit, Before connecting the setup • point A is about 30 _:s. check 6.3 '_ 6.4 Apply oower to the unitas iu 5.I.Z 8 KC 6._.I Clock Connect Z63-II CZ0 to+ and 3V. CZI, set the clock frequencyt_o 8000 _:: 6.4.2. By" adjusting ± 80 cps. • ! _ Test Specification " _ ;_ _ _ _:I_ LL i _ ¢_-'__ _: ............. ---- for SurVeyor Digital B'livet _, ._r_! ,% _ R n[_ _ _ _ ' '_._DU' _i_ U __| _ FORM ML 77 " r ,, "<: 1 -. _i._;" _:_: : 6.4.3 Every IZ5 _sa positive-going Z0 _s pulse should appear Z85-6. " at [z_:2 -_ :_/ _:_°:< _ U 6.4.4 6 4.5 '_ 6.4.6 6.4.7 6.4.8 =6. o_ o 5 St Z35 - 3, 5, a 4 KC square wave At Z34 - 3, 5, a ZKC square wave At Z_3 - 3, 5, a IKC At Z3Z Disconnect square wave should a_pear; should appear• should appear. should appear = _--'-_L=T- -;_"" _qt--:___S.'. 7_ _',_:: 3, 5, a 500 CPS + 3V from square wave Z63-I I. Connect the pulse generator point A to Jl--14. 6.5. I setup as sho_-n_[n Figure to a nominal 3. connecting Adjust the pulse generator 6.5. i. I output of + ZV. ._ m = At P3-14, there should be a negative-going + 3V to OV pulse. The voltage at Z65-4 should 0:IV to 0. I ± 0. IV_ The voltage at Z36-6 should to 0.1 ± 0, IV. The voltage at + Z, 2 ± 0. IV. The voltage at Z68-6 should fall from + Z. Z ___ Ng__ _<_:_--: : _:'* :- /: _'_=_ _.::= _ :,,_,_: _)_' 7_C, ': '. ',,2 "_" -, : 6.5.1. Z 6.5.1.3 _ fall from at Z37-.6 +Z. 2 ± 0 1V should remain 6.5.1.4 6.5. I. 5 6.5. " L. 6 fall from + 3.0V to OV. The voltage at Z70-6 shoUld fall from + 3.0V to OV. Modules Z41 through Z38 should puises from the pulse generator. each module should vary between + 2.2±0. IV. at Z84-6 should 2 from fail be counting the !CPS Pins 3 and 5 of + 0.1 ± 0.1V and 6 5. i",'7 The:voltage 6.5. 2 Disconnect Jl -6. 6 '5. Z. 1, 6.5. Z. 2 from _ 3 0 to OV. point A of Figure Jl-14 and reconnect it uo Same as 6, 5.1.1. shouid fall"from +Z. 2 ± 0.1Y The voltage at Z61:4 to0,1 ± 0.1,V. iijil i 2 i *l __ ---11 ........... .. Specification Test for Surveyor _ N_ 171 .i"A S I'1_ k,_ '" o _' ):,_ .--.- -----_PNOV(.O .,____._._ _ .: _ $40548 " ' " -- -' .... .----L--:' " --7- It FORM ML7 7 _r r ? 6.5. _: 6.5.2.4 Z. 3 The voltage at Z37-6 should to 0.1 _. 0. IV. The voltage at+ 2.2 ",- 6.1V. The voltage at Z68-6 should fall from at Z36-6 +Z. 2 ± 0.1V should remain fall from + 3.0V _o OV. 6.5.2.6 : i_ 6.5. Z. 5 6.5. Z. 7 6.6 Threshhold 6.6.1 Modules Z41 through Z38 should be counting _he ICPS pulses from the pulse generator. Pins 3 and 5 of each module should vary between + 0.1 ± 0. IV and+ 2.2 -_0. IV. The voltage at Z70-6 should fall from + 3.0V to O _r. The voltage at Z84-I Z should fall from + 3.0Y to OV. and Calibration. signals to P-3. Z65-9. Connect point A in Figure 3 to JI-6. Remove Ground 6.6.1.1 Reduce the amplitude of the pulse generator the peak amplitude at Z69-13 is +50 ± 1 my. Select pulse the bias resistor, appears at Z63-15. until 6.6.1.2 R13, so that one clock Record the value of R13. : 6.6.1.3 Adjust the amplitude of the pulse generator such that the peak amplitude at Z69-13 is i. 703 ± 0.17V. Select R18 such that twelve clock pulses occur at Z63-1 6.6.1.3.1 If the proper resistor, R18, is not available, the clock frequency may be adjusted a minimum amount to ger.erate the 1 Z clock pulses. detector output, 400 _s. connect Z61-9. Z69-16, should be • _" • ;' ,LJ 6.6.1.4 The T of the approximately 6.6, 2 Disconnect point A from J1-6, ground from Z65-9 and ground 6.6.2.1 A to J1-14. Remove Reduce the amplitude of the pulse generator until the peak amplitude at Z58-13 is + 50 ± ! my. (: 6.6. Z.Z Select the bias resistor, R-If, so that one clock pulse appears at Z63-15. Record the selected value of R1-1. "_'z_[_elea s ed '_z_"_,'_'-----_--'-_ ................... i -----,--_-.,_,---_ Test Specificati for Surveyor D_gxtal Bhvet n _ ._ ./__._[_. t_*V_ _,._ " | FORM - ML 7 7 -- o ¢,....... - --S COD: 0 mz13 ee e _ " z 6.6.2.3 increase the amplitude of the pulse generator until the peak amplitude at Z58-13 is + F, 703 _ 0.17V, Select R15 such that twel ve clock pulses occur at Z63-15. /:. I _. 6.6. Z. 3.1 Y 6.7 _. 6.7.1 6.7. z a......4.. If the proper resistor, RIS, is no= available, the clock frequency may be adjusted a minimum amount to generate the twelve clock pulses. should be 6.6.2,4 The T of the detector output, Z58-16, approxirnately 400 _s. Noisy Film Circuit Set input output to I. 7V. until the level at Z75-6 Measure 51-6 and 14. Increase pulse rep rate goes from 3.0V to OV. it should be,_,_10ms. rep rate at Z74-6. za_A_e0 c_caEo _ Test Specification _ r Digit_l Blivet ! P ' " I. U$£ 2 RF.!_O_K PAd _'S DISPOSITION 3. CANNOTDE It[WORKED 4. RECORD : 5 ...... _ | | $40660 .... t | O ° " , _i_-----_-_;_;-_&:; R_V_tONS _ ...... t-I Jl f J f ,_, ', J-T-F]-T_ _E_,A._:_ urvo Sensor Blivet, __.. NARSHALL °"'°_/_-_................To_t , ._ . _o_. , s,o_i_i_tio_ a__[._BORA,__., j, 1.0 SCOPE This procedure describes the test required to verify proper operation of the electronics in the Surveyor Sensor, ML 256-1. This assembly, 51ZZ5-I01, is a, portion of the Surveyor Microrneteorits Ejecta Detector, ML 185-i. Z. 0 APPLICABLE ,mm_mmL_ DRAWINGS 51Z54, Assembly-Sensor 51114, Schematic Electronics Lunar Ejecta 2.1 2. Z Marshall Marshali Detector Marshall Laboratories, Laboratories, Diagram, O _O _O O Z. 3 Laboratories, 51ZZ5-101, l%_atrix Assembly "_ 00 3. I 3. Z 3. $ 3.4 3.5 3.0 TEST EQUIPMENT (Equivalent Units are Acceptable) Power Supply, Hewlett-Packard, Rutherford, Model Model 7ZIA, four required Pulse G_nerator, Oscilloscope, B-I 5 Tektronix, _f/pe 545-A Type CA. Type No. 143Z-L. Plag-ln Unit, Tektronix, Resistor Decade, General Radio, 4.0 TEST PROCEDURE 4. i Using the schematic diagram (51114) and the mylars (51225-101) as references, connect +6v -_0. Iv to the terminal brought out on the board for connection to J01 - Pin 4. Similarly, connect - 7v ± 0. iv, + 3v • 0. Iv, + iZv _:0. Zv and conamonto terms J01-7, -ll, -IZ and Z respectively. 4.2 Before applying power, verify continuity between all terminals brought out on the board and their respective points of connection to elements on the board. 4.3 To terminal J01 - Pin 8, apply a negative going pulse I. 5v .Iv in amplitude, I ms ± 0. I ms pulse width and 20 pps ± Z pps. 4.4 put pulse. Sync. the scope externally on the negative going q edge of the in- ,_,_;_:.___.v--e _p_a_ ...... -= -_ .............. Surveyor Test Sensor ..._ Blivet,: for ' _ ...... ' ....... ...... :.....-" c_c_¢o ----- Specification LAgORATORIES _'a-_ z...... --:_ _ FORM ML. 7 7 _, co_...rm_a _xz6 ' 4.5 The voltage at ZI3 Pin 7, Z12 Pins 3 & i0, ZII Pins 3 & 10 shall be a positive going pulse 2.8v + 0. Zv in amplitude, Z0 pps :hZ pps and i0 ms • 2 ms Pulse V_id_h. 4.6 I _ L_ The voltage at ZIZ pins 4, 5, & 8, and ZII Pins 4, 5 & 8, 2.8v ± 0. Zv in amplitude, i0 pps • 1 pps. shall be a square wave 4.7 The voltage at ZIZ Pins 7, 9 & 11, and ZII Pins 7, 9 & ii, shall be the same as in Paragraph 4.6, except inverted. 4.8 Temporarily install 1%6 = IK, 1%10 = IK, 1%14 = 5. iK and 1%11 = IK, using I/4 watt 5% resistors. Production Department will install flags for this purpose. 4.9 The voltage at TP8 shall be, alternately, i negative going pulse 20 mv ± 5 my in amplitude, and negative going pulse 140 my ± 15 n%v in amplitude. The pulse i'ate shall be Z0 pp_ ± Z pps. 10 The 7O at ZI6 6 shall 4. voltage pin be a negative going pulse mv =h15 mv in amplitude, i0 pps ± 1 ppso _o _i I 4. Ii The voltage at ZI7 Pin 6 shall be a negative going pulse 8 mv ± 2 ravin amplitude, i0 pps ± 1 pps. 4.1Z Apply a positive going pulse 2.8 v _-0.2v in amplitude, a rate of Z0 pps • Z pps and a I0 ms _=Z ms pulse width to Jl - Pin 5. (Sync. the scope positive). 4.13 Repeat Paragraphs 4.3 and 4.4 ± 4, 14 The voltage at Jl - Pin I shall be a positive pulse 1750 mv 375 ravin amplitude at a 10 pps _= i pps rate. 4.15 The voltage at Jl - Pin 9 shall be a positive pulse 200 my in amplitude at a 10 pps ± I pps rate. ± 50 my _._ : ;_,e_a_o Surveyor Sensor Blivet ..... ......... --'--o. Spe=m=ation 'LA OL ATOE$ I S 40660 ,_.,aov_o FORM ML 7 7 _N. "_z3_._.S • ,, 4k I _:;_ ?" r........... 3 C.,::_:_7:: i_.%/0;:;;ED S...... " :t _ :; $4068;d " • j' t CO . . -. :. - " :..j •' ,_ F_!8 /_ _Ff.& d:; l;_ :,e ,' TIII,ll • "' (GSE - Surveyor .... II _"II %_ il I 'Z'_q :,'/ / ,. -(',[' ,'. - ,:, Operational Manual " 840682 ,'.... '------'_':: . ","_'. = I ::,: ............ ....... "" / .,,.G-Zv_','_ II ......... I. 0 SCOPE I. i : U; (; • o This specification contains a description of the functions and operation of the Surveyor Ejecta De'cector GSE ML 260-I. : Z, 0 APPLICABLE DRAWINGS;: Z. 1 Marshall Laboratories, Ejecta Detector, (GSE Marshall Laboratories, ML Z70-1. 51287, Schematic - Surveyor) Diagram Micrometeorite Z.2 c,3 51444, Jacks-in_a-Box (Surveyor - GSE) ,o ; o 3.0 FUNCTIONAL EJECTA DESCRIPTION DETECTOR GSE OF THE : 3 1 i { ; The Ejecta Detector GSE is a portable test set which supplies all electrical power and signals necessa_'y t_ check the Lunar Ejecta Detector ML 185-I for proper operation. The laa_. _,_t _rovides a readout display instantaneously upon initiating the stimulus fox' the _u.nar , Ejecta Detector experiment° The operator now has a visual check of the experiment data correlated with the input parameters which are selected on the front panel. In addition spacecraft simulator the Ejecta Detector GSE may be used in conjunction with to supply only experiment stimulus, ,while the spacecraft is to, provide telemetry signals and readout display. the or 3.2 The Ejecta Detector GSE can be operated on an external 12-volt battery, or operated from ll5-volt A.C. line. Terminals for the battery are located on the rear panel. To conserve power while in battery mode, panel lights may be turned off by use of a switch on the rear panel. This does not interfere _ith the readout display. _ 'I -d ' .... ;"":_'J :'''_'_ , - ........ Ejecta (GSE Detector " Surveyor) Manual _ :l |A_N_..hVN_[:_ L i ........ ' _____ ......,_;._;-------u--_ ":'--_ .......... =: : ......... Operational ---: I'm :_"--_: :::......... -_-"--'_--'_ _ S40682 ! _l...,.--_±, ............ I _ ] "_ .++.,...'+, ML77 ' - .... : ......... :.m. ,:, m4,. R COo:+: < +. i ¢ I 3,3 " Specific A. fu_.ctions-of Provide spacecraft the Ejecta power Detector to the GSE experiment. are to: B. -: L , ' ¢," ,-, Provide Provide Provide 1. 2. 3. heater power to the experiment. signals try to the experiment. C.. D. simulated simulated command sensor .telem signals: CALIB CLEAR READOUT command command of the serial binary readout data, binary to decimal : cq ¢o _ o . I E. Provide storage and conversion, F. G. Provide Provide Provide display. for the experiment for experiment for experiment temperature° supply current, voltages. a monitor a monitor a monitor power input • " H. t I. Provide monitor of all input and output signals of the experiment. 4.0 , CABLING ! 4. 1 There are five (5) cables supplied with the Ejects Detector GSE which may be stored in the cable compartment located behind the rear panel. Cable A. B. C. D, E. description: Payload Sensor Sensor A.C. to GSE to Payload to GSE Line Power Box \ I' I l 4.2 GSE to Jack • " _ ..... _ ......" Ejects Detector ...... "" ' ' ........ _ .-, _ ML Z60-1 Operational (GS_. - Surveyor) Manual _.- I_A_SH_LL LABGRP.¥O_t._; _ .I .:C .,: ML77 .. ,- , r , / / c ! ,t i14"'3 , The sensor to payload and sensor to GSE cables are made of special high 4.4 ': ," temperature cable. in the (sensor to GSE) signal lines and provide cable A small shielded attenuator box is installed to prevent any possible cross talk to other optimum signal transmission levels. ' _, 4. 5 The GSE to jack box cable was designed to not only relieve front possible panel noise .,-_---,-.' " congest'ion,, but also to provide a means of disconnecting receiving cables when jacks are not in use. 4.6 :; Connectors the proper on t'he rear panel of the cables to ensure intended GSE are designed interconnection. to mate with ont_ " _ OD xO 0 x:r ': : 5 0 DESCRIPTION OF GSE FRONT PANEL FUNCTIONS _ 5, 1 • ' The the portion fr0nt of panel the controls exPeriment. provide there simulation are tests of all designed input parameters to check the to logic :, experiment. In addition ] ._ ._ • _ i 5.2 The front panel and may meter, be divided 3) selection into four of input groups, parameters 1) readout with display, pushbutton 2} monitoring switches, Pushbutton Four A. 'B. C. 4} VERNIER/PRESET are lighted are controls to indicate the for sensor stimulus_:: input modes. parameters. i 5.3 ! switches selected power ! 5, 4 ; pushbutton POWER EXP - switches GSE power used on. for indicating POWER - experiment - power on 60 cycle A. C. BATTERY-LINE GSE po_er or external supplied by l15V, D. C. battery D. HEATER PowER 2zV power for experiment in sensor housing. on the line voltage are from heater loci.ted 5.5 5.6 ,, , ,: The operational limits 105"-¢ to lZZV, 60 cps A. C. The operational limits on the battery mode are from 12.2V to zOV. The battery rating should be a minimum of 300 ma. Polarity must be observed on terminals when connecting external battery although fuse protection is provided i:L the event of battery polarity reversal. ' r ',•r " "_, :j.:%7.:.'_ " •,.------------......------------....... "_ = _: : Ejecta ML Detector Z60-1 " - Surveyor Manual AR$I-I ALE LA0 R y t:: "I ... .:,_'Yj_ Ope rational ..... "'77 --'--"--_- ........ : - ........ - ..... HI_, o _ _'' " T'" " i l _" __ _ _ i 5.7 i _ To initiateany one of the three cemmands (GALIB..._LGAR, or READOUT) the REPEAT/MANUAL switch must he in the MANUAL position. The desired command is selected by depressing one of the three switches. Only one command is to be selected at a time. The lighted switch indicates - " which command has momentarily COMMAND) switch is depressed been selected. The lighted (ENTERafter the selection. to initiatecommand The i:" calibrate command _z provides the in-flight calibration of the MIC PHA T ]_HA---=and _ I_M ....... ._ ,.,_ operation. In order to achieve a complete callbration, the CALIB command must be initiated twice. The sequence of _<- .? 5_ 5" --..-.--- 8 : _i: i. :.• -- _ i""_"" , , _ _ .-o ': followtheass: in-flight calibration alternate___ s with every " depr.ession FILMA PHA = IZ MIC PHA : 6 FILM B PHA MIC ' PHA = = 6 ox _.e ""_' switch -. --- _. _ .. _?: _o,, o% ! ! 5.9 , The results of this connrn__nd are the appropriate film identification immediately displayed by the and accun_ulator information. telemetry may have GSE w'ith The GLEAN command is also a simulated _-s initiated to clear po._s;.ble- shorts that signal. This command existed on the film plates. in the film amplisignal. This _]-_ _ __: _i_s _: !?_ --_: %-_. I " 5.10 ,i ! , i i II .fiefs,which System's clear erroneous readout. results in an signal, causes a disturbance The Flight The READOUT command is another simulatedtelemetry : command starts the Flight Sy iem readout. is used for repeating .the readout of the most Repeated readout-'cornmands rnay oe used susceptibility to noise by observation The. readotlf command function recent stored>_nformation. F!igh_ Sys_em-s - to testthe of the repea_ed data. , _.. i " 6.0 ANALOG SIGNALS, : %% f _': .'_ _f+ ", 6. i The A. B. C-. analog MIC FILM FILM signals are as follow.: A B \ "..... _.'_ _"_" :-":;_:_ • : ...... _ Ejecta Detector " -::- _ MLz6o-I ........ J_ (GSE - Surveyor) LL AISH---h. LADOIAT02125 S40682 _; =:::,.... =-=:_= -' + t . :" 6.2 The timing indicated cn the switches will be referenced to the time of a pulse generated by the ENTER DATA switch. The ENTER DlkTA switch initiates the analog sequence. The }_llGanalog pulses may T = 500_sec, T = 50 Msec, be selected at T = 0 _ sec, T = 50}_ sec, and T = 150 Msec. .__._ L 6.3 L_ 6 4 .--.---,,--- ! L_ . To prevent a second MIC pulse from being generated during the pulse height analysis of the first pulse, the selection switches are appropriately interlocked, the left-most switch taking precedence. With the selection of the MIC follow s :A. MIC MIC ",. 5 T = 0_ sec, _dditional selections are as T = 509sec T = 500 _tsec is not allowed is not allowed _< ,_ 05 ,D i i B. : o ,q*u_ • _: G. MIG T = 50 M sec generates a pulse during the readout of the MIC PHA bits. No pulse height analysis is made, however, one extra count is added to the MIC accumulator. "-'--_, D.'-::MIC T = 150 M sec generates a pulse after the MIC PHA and l_.llC ACC htLVe been read out, and before the conlpletion of the ent'_e readout. No analysis is made, One extra count will be added to the accumulator on the nex_ readout. 6°6 ! The FILMk,T = 500_sec, FILM B signals may ahd T = 50M'sec. be selected at T = 0_sec, T = 50_sec 6.7 ., ] .\ With the salecLion of T = 0 }_sec, on FILM additional selections are as follows: A. B. C. FILM FILM T = 50_ T = 500}, sec sec is not is not allowed allowed A or FILM ]5 as a reference, ' FILM T = 50M sec, no analysis is made, is added to the accumulator. however, one extra count ) 6.8 " The T = 50}_sec and T = 500}_sec switches, both MIC and FILM, have other functions. For example, if a hit occurs on the MIC, the FILMS will accept, information for I00 _tsec, then film analysis will be inhibited. until readout is completed. If a hit occurs on either •film, the MIC PHA will be inhibited after 100}, see.. For a more detailed example refer to 9.0, Acceptance Test. 6.9 '_ Ejecta Detector .-,,..... ML77 i ___ I r,: i_ r.. llOl i _ ii ii t 1 7.0 ANALOG SIGNAL MODES ?. 1 :' : ::: ".. { The modes A, B. in which the analog signals may be generated are as follows: REPEAT/MANUAL PRESET/VERNIER 7. Z 7.3 The REPEAT mode initiates the data at a rate of .5 cps. depressing In the MANUAL mode, the data is initiated by momentarily the ENTER DATA switch. In the PRESET mode. the PHA windows 7.4 _ o , 7.5 u] ! are selected by the use of a thumb wheel switch. The preset _umber on the switch should correspond to the displayed number in the PHA readout. The VERNIER PHA windows. mode is used in teststo establish the threshold of the i 7. 6 _...._, ! " i ! The vernier potentiorneters are calibrated in tens, hundreds, and thousands of millivoits. The largest output is ten volts. The FiLM analog signals are calibrated to + 1% of the dial setting. Before calibrating a Flight System, the Z8V--rnust be adjust for Z8V +]_0. The FILM HI-LOW toggle switch, located on the front panel; is used to acquire the desired dynamic range of the analog signal. In the LO position the first eleven (11} PHA steps are produced. In the HIGH position, steps twetve _through fifteen are obtained. The MIC analog vernier setting. signal is attenuated by a factor 62.1:1 from the MIC I 7.7 •: i 7, 8 7.9 Additional pulses to the MIC and FILM amplifiers are generated by the GSE other than those that are selected by the switches.: _Autornatically pulses are generated during the MIC accumulator readout, and FILM accumulator readout. No PHA analysis is made, and no counts are added to the accumulators. These pulses are provided to che_k the inhibits of the accumulators during readout, '% .... _'_ :--...--:- _ "....... " L_;J "_----_'-_'_" _ " Ejecta ' (GSE ,' Detector Su,rveyor} Manual _S[:hLL ML - LAORATO[aES _ ....... -: ...... "_ Operational ' ,z--:,",, "i," V" "V' :' "7 "Ir -- _H_T 0_' _ _: -_, ,r ¢ ( i 8.0 METER MONITOR : _ ;L: 8. 1 _ _ The A. B. meter TEMP IpR I ZV 29V 3V IZV 6V -7V IHT R provides a check unit current) of the in '°C) following experiment parameters: (of sensor (primary c 4 ¢ _ ¢,a ,.9 I ' _ • C. D. E. _'. G. H. I. (actually Z8V at the expe_'_.ment) _ :% o %- _ (sensor heater current) probe directly by the is located in the sensor blivet. in clegrees experiment. centigrade. The meter reads The % ' 8.2 The sensor temperature meter reads is the temperature current drawn 8.3 II_RI milliamperes _ • ,,_ 8.4 deviation from nomina.l. The 2V B+ monitor is located in the power supply blivit. The meter reads the percentage change in volts from nom_.nal (2.04V). In the 29V position the meter indicates the D.C. voltage (from spacecraft) applied to the experiment. The meter is calibrated measure the percentage change from the nominal Z8V. The four (4) experiment power supply voltages -- 3V, are displayed as pe'.•centage changes from nominal. The IHT R scale reads directly in milliamperes the heater in ;,hesensor blivit. the the to 8.5 : 8 6 IZV, 6V, and -7V, 8. 7 _ current supplied to i- , ,_.:,..,a:._ Ejecta ML Detector 260-1 ,,,...... 4 Operational Manual '= .,,- 77 J i -9.0 ACCFPTANCE TEST i ,.-__: r_'j :: ,% 9.1 POWER EXP LINE REPEAT PRESE T ON ON POWER ----'-- 9.1.1 9.1. cO Depress Z all five (5) switches in MIKE row (upper row). _o O ] : __..__9. I. 3 : Rotat_ the MIC PRESET thumbwheel through At each setting note that the MIC PHA display "to the setting except that an "8" on the wheel a "0" on the display. OBSERVE: FILM FILM PHA ACC = 00 = constant all settings. corresponds corresponds to ID = both at zero (0) Note that the MIC ACC display advances three (3) counts per readout and cycles from 0 through 7 and back to 0. OBSERVE: FILM /'ILM PHA ACC = 00 = constant i 9. I. 4 : "_ _ i ID = both at zero (0) Release the M[C display advances OBSERVE: 150 M sec switch a,.d note that MIC two (g) counts at a time. ;_HA ACC = 00 = constant _%.CC FILM FILM ID = both at zero (0) 9. i. 5 Release the MIC display advances OBSERVE: 50 M sec switch and observe one (I) count at a time. PEA ACC = 00 = constant that the ._C ACC FILM FILM ID = both at zero (0) I,:;Z_Uj ___ ;'--: : _--"_---JC ,-........ "----_-_ Ejecta Detector (GSE - Surveyor) ML Z60-1 . _AffS_]2[_ LABORATO IE I ,i __ ", .,-,' 77 _m, CODE _ER 1_IR6 ,. i ,, 9. Z " ; :,:; 5{ 9.1.6 Release the all read[ng_ ON ON three (3) rema.ining are constant. MIC switches and observe that POWER EXP LINE REPEAT POWER ._ } .: PRESET 9.2.1 } Depress PRESET OBSERVE: the four (4) FILM A switches thumbwheel through settings The FILM PI-I& display setting on the wheel. The per FILM ACC readout. is ata = O = cohstant display and rotate 0 through will the !5. FILM J correspond to each =o ,.o i advances two (Z) counts ! : 1 i i I 9, 2. Z The A-ID MIC PHA MIC ACC 1, the B-ID is ata 0.' Release the FILM A 50 Msec switch, Note that now the FILM ACC advances one (i) count per readout. All other readings remain as in paragraFh 9. Z. I, i , ! 9.2.3 Release the renaaining three (3) FILM that all readings are constant MIC PHA B-ID= 0 = 0 A switches and observe 1: 9.2.4 Repeat paragraphs with _ILM B, 9. Z. 1 thzough 9. Z, 3 replacing 'F_LM A ":% ).:2",5_:i:_ Ejecta Detector i .',..,';._,w.,_: .............. '_ ,-•,.,.._, , _, _V,_ :- .-.---=-:---_'-,------,--, (USE- Surveyorl Operational Manual t _ ...... I ! $40682 1 .i 77 M]_, CODE NUMBF_ 1312g ,.:- 9.3 POWER LINE EXP POWER MANUAL ui "", _ $ 9.3. 1 Depress CALIB switch and then momentarily (once) d_press the ENTER or FILM B. and observe the ENTER FILM A and FILM A FILM FILM COMMAND switch and observe sequence FILM A Momentarily depress the ENTER COMM_ND switch the other sequence. At each further depression of COMMAND switch *he display will alternate between FILM B. "- co , .o ; ! ! PHA ACC 1 = 1 = advances one (I) count A-ID= B-ID = 0 MIC PHA = 6 MIC FILM B FILM PHA = 6 ACC = advances one (l) count , ! I i : t A-ID= 0 MIC PHA = 2 MIC ACC ACC 1 Depress = advances = advances one (I) count one (I) count ' FILM B-ID= 9.3. Z Release the CALIB _witch and depress the CLEAR. and release the ENTER COMMAND switch. OBSERVE: Erroneous Readout ':.?..... -__ • . .... " _ " _ Ejecta Oetector (GSE ,,, Surveyor) Operational Manual 4 _--:-:::- MARSHALL .a_ _a_rnm, --- _.@ ._._.._._t_.im_ - ..... ""_C"---'-- ,.,.j...::, 77 9.3.3 '_----_ :, _Ji _._'_ :, N 9.4 POWER LINE ; EXP REPE.4 PRESE MIC O Release the CLEAR and depress the CALIB. Momentarily depress the ENTER COMMAND and observe sequence FILM A or FILM B. Release CALIB a_d depress READOUT switch. Momentarily depress the ENTER COMMAND switch and observe that each time the ENTER COMMAND switch is depressed, the display flickers and returns to its original reading (i.e. , sequcnce FILM A or FILM B). POWER T f = 5 = 11 PRESET PRESET FILM U] I i _..._._ Ii I I 9.4.1 Set MIC OBSERVE: 0 _sec switch FILM FILM A-ID= B-ID PHA ACC 1 = 0 and depress = 11 = advances FILM A 0 }_sec switch. one (I) count per R/O l i i 9.4. Z Release FILMA Depress OBSERVE: ! i MicP_, =5 "MIC ACC advances 1/alo, FILM A 0 _sec and repeat paragraph 9.4.1 with 50 _sec depressed, then releas'e FILMA 50 _sec. FILM A 500 _sec. FILM FILM A-ID= B-ID MIC MIC Release FILM PHA ACC 0 = 0 PHA ACG = 5 = advances one (1) count/R/O = 0 = advances one (i) count/R/O i 9.4.3 A 500 }_sec. ,,.".°':-_..--..--------. ........ " ................. .. _,._,v_,_ ..... _ _,,_' _,_,,_ ,t..,-' ._ ,_ _l ------" ........... Ejocta Detector (_sE-Surveyor) ML 260-1' Operational Manual ,I It_A_ISI-I_L_ IABO IATO!_,I [8 $40682 { "........ '_T"_ ._,v:: ;'Vo,.,. .",.7 Azi:ov _i 9.4.4 i: ,i Depress FILM as in paragraph Release Release FILM MIC MIC A 50 M sec 9.4.3. A 50 M sec 0 _sec 50 bsec FILM FILM and observe that the displays are ? !_._.-_:_ u C,[ 0., 9,,4-, 5 Depress OBSERVE: and PHA ACe FILM = iI A 0 i_sec. , _ ? = advances one (I) count/R/O A-ID= B-ID= MIC x.o o 1 0 PHA ACC = 5 = advances one (1) count/R/O co Release 9.4.6 Depress OBSERVE: MIC MIC MIC 50 }_sec 500 FILM FILM A-ID B-ID MIC MIC _sec. PHA Ace = 1 0 PHA ACC = 0 = advances one (1) count/R/O f = 11 =-advances one (I) count/R/O :'--'_'_--' _, 9.4.7 Release MIC 500 _sec and observe same display , as in Depress MIC 50 M sec paragraph 9, 4.6. Release MIC 50 Msec 9.4.8 Depress paragraph Release MIC 150 M sec and observe 9.4.6. MIC I50 Msec same display as in 9.4.9 Repeat paragraphs 9.4.1 through with FILM B in each step, 9.4.9, _-eplacing FILM A . .,:.'-,-,, ........... ,,,,, : =:_ =, ....... -_ _---.. __--...----,-.--------. " Ejecta Detector (GSE - Surveyor) Ope_ationai Manual _ _ | t%_%DA_'NDS_:_ .... : : :-::-::-] -:--_ t ,! 9.5 POWER ON LiNE _ •----'-" EXP POWER REPEAT PRESET ,'l ' 'r '----_t : J MIC FILM PRESE T 3 14 PRESET 9.5, 1 Depress OBSERVE: FILM A 0 _see and FILM FILM FILM PHA ACC I 0 = 14 = advances B 50 _sec switche_ one (I) count/R/O -.D _. 0 " co _n A-ID= B-ID= , ,i l Release 9.5. Z I ! Depress OBSERVE: ' 'MiC FILM FILM B MIC PHA = 0 ACCUM 50 _tsec = constant B 500 F_sec FILM PHA = 14 = advances one (I) count/R/O FII,M Ace A-!D= 1 B-ID = 0 MIC MIC Release 9.5.3 FILM PHA ; l n = 0 = constant ACCUM B 500 F_sec 9.5.1 and 9.5. Z interchanging FILM B Repeat paragraphs and FILM A. Repeat PRESET same paragraphs thumbwheel except: ,. FILM FILM ,i ,, 9, 5.4 9.5.1 through to one (1). 9, 5.3, changing the FILM All readings shall be the PHA ACC = I = advances two (Z) counts/R/O "";_'_'_ .... _"_ ,,_,. : ,* _ _ Ejecta Detector APlgI IAL _--'_'--'_--''_'--'-_"---"i $4068Z sm_gT 14 1 o_ ,:. _ :_______ ____ _ _ _ (GsE I Surveyor> ML Z60Operational Manual Jl I tlll ' ++1 i !+ s _i ., I I! l +_ _i ++ '' ' ' i ! ; I i i ' i % i i I--' I if+, :--" _ _ b'. " _ _- , r-, _'- ,c_" ., , ,: _ r :_.. , "_- -J _> _ " El: ' - +-."I _,... - _ "- ...... _ ..'-_ _' :n_ ,.q • _ i:_.-.- .: ' • +" • " _' "" _'i_ '+-.....'-'_.... ' _ - _'_._ ' "'_" " :_'_'_q.--_' -".,'--' :" _^ • ._, _' it- +-' _!+_'+_]'I ; -- ._ ._ .... ; l . ' X Y :" _. _" r _"+, ..l '_l'r;'ri :I ; :'_ ":]';" "_=+:"_'" "'+"" j F_ ' ":: +".... . _._.._=,>_:i ! ..... 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