DIGITAL TV QAM SIGNAL ANALYZER

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					               IT-087




DIGITAL TV QAM SIGNAL ANALYZER

       OPERATING MANUAL
      OM 6684-054-21477812-2007
2
                                                     TABLE OF CONTENTS

1   PRODUCT FAMILY GENERAL INFORMATION .......................................................5
2   GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION...............................6
  2.1   Introduction.................................................................................................................6
  2.2   Safety Precautions.......................................................................................................6
  2.3   Function .......................................................................................................................6
  2.4   Environment Conditions ............................................................................................7
  2.5   Package Contents........................................................................................................7
  2.6   Specifications...............................................................................................................8
  2.7   Application ..................................................................................................................9
  2.8   Design and Operation Overview ...............................................................................9
        2.8.1 Principle of Operation..........................................................................................9
        2.8.2 Structure Scheme .................................................................................................9
        2.8.3 Component Arrangement...................................................................................11
3   PREPARATION FOR OPERATION..............................................................................11
4   OPERATION PROCEDURE` ..........................................................................................11
  4.1   Controls and Indicators............................................................................................11
  4.2   Preparation for Measurements................................................................................11
  4.3   Measurement Procedure ..........................................................................................13
        4.3.1 General Information...........................................................................................13
        4.3.2 LEVEL Measurement Mode..............................................................................14
        4.3.3 SPECTRUM Measurement Mode .....................................................................16
        4.3.4 SCAN Measurement Mode................................................................................17
        4.3.5 TILT Measurement Mode..................................................................................17
        4.3.6 RIPPLE Measurement Mode. ............................................................................18
        4.3.7 DVB-C TABLE Measurement Mode ................................................................19
        4.3.8 DVB-C GRAPHIC Measurement Mode. ..........................................................20
        4.3.9 DVB-C CONSTELLATION Measurement Mode ............................................21
        4.3.10 Measurement Parameters Adjustment Mode...................................................22
  4.4   Data Logger Functions .............................................................................................23
        4.4.1 General Information...........................................................................................23
        4.4.2 Channel Plan List...............................................................................................24
              4.4.2.1 Channel Plan Editing.............................................................................24
              4.4.2.2 Channel Plan Name Editing ..................................................................27
              4.4.2.3 Channel Plan Deleting...........................................................................27
              4.4.2.4 Channel Plan Creating...........................................................................27
        4.4.3 Channel Data Logging .......................................................................................27
              4.4.3.1 General Information ..............................................................................27
              4.4.3.2 List of Channel Data Logger Pages.......................................................27
              4.4.3.3 Channel Data Logger Page Viewing .....................................................28
              4.4.3.4 Channel Data Logger Page Deleting .....................................................30
              4.4.3.5 Channel Data Logger Page Creating .....................................................30
        4.4.4 Spectrum Data Logging .....................................................................................30
              4.4.4.1 General Information ..............................................................................30
              4.4.4.2 List of Spectrum Data Logger Pages.....................................................31
              4.4.4.3 Spectrum Data Logger Page Viewing ...................................................31
              4.4.4.4 Spectrum Data Logger Page Deleting ...................................................31
              4.4.4.5 Spectrum Data Logger Page Creating ...................................................32
              4.4.4.6 Spectrum Data Logger Page Scanning..................................................32
        4.4.5 Memory Manager ..............................................................................................32
                                                                   3
                 4.4.5.1 General Information ..............................................................................32
                 4.4.5.2 Operating the Memory Manager ...........................................................33
                 4.4.5.3 Testing the File Structure ......................................................................33
                 4.4.5.4 Determining the Memory Resources.....................................................34
                 4.4.5.5 Viewing the Structure Table and Files of all Types..............................34
                 4.4.5.6 Erasing the Memory ..............................................................................35
     4.5   Self-test Mode............................................................................................................35
           4.5.1 General Information...........................................................................................35
           4.5.2 Removable Module Temperature ......................................................................36
           4.5.3 Battery Condition...............................................................................................36
           4.5.4 Standby Battery Voltage....................................................................................36
           4.5.5 Program Memory Check....................................................................................37
           4.5.6 Base Unit Check ................................................................................................37
           4.5.7 Removable Module Check.................................................................................37
           4.5.8 Data Logger NVRAM Check ............................................................................37
     4.6   Operational Parameters Setting ..............................................................................37
           4.6.1 General Information...........................................................................................37
           4.6.2 LCD Backlight Setting.......................................................................................38
           4.6.3 LCD Contrast Setting........................................................................................38
           4.6.4 Audio Indication Volume Setting ......................................................................38
           4.6.5 Audio Indication Switch ....................................................................................38
           4.6.6 Language Selection............................................................................................38
           4.6.7 Reference Clock Frequency Setting ..................................................................38
           4.6.8 Reference Clock Date Setting............................................................................39
           4.6.9 Reference Clock Time Setting...........................................................................39
           4.6.10 Key Pressing Sound Selection .........................................................................39
     4.7   Identification Data Readout.....................................................................................39
     4.8   Audio Indication Check............................................................................................39
     4.9   Operation Controlled by PC....................................................................................40
           4.9.1 General Information...........................................................................................40
           4.9.2 PC Configuration Requirements........................................................................40
           4.9.3 Software Installation ..........................................................................................40
           4.9.4 Starting the Program ..........................................................................................41
     4.10 Software Updating ....................................................................................................41
           4.10.1 Software Updating via PC. ..............................................................................41
           4.10.2 Software Updating by means of MC-087 Removable Module .......................42
     4.11 Calculator Mode .......................................................................................................43
     4.12 Battery Operation .....................................................................................................44
5      MAINTENANCE ...............................................................................................................44
6      TROUBLESHOOTING ....................................................................................................45
7      STORAGE ..........................................................................................................................45
8      TRANSPORTATION ........................................................................................................45
9      LABELING ........................................................................................................................46
10     WARRANTY INFORMATION ......................................................................................46
11     APPENDIX .........................................................................................................................47




                                                                    4
     1 PRODUCT FAMILY GENERAL INFORMATION

   IT-08 is a multifunction handheld compact lightweight measurement instrument incorporating
two components. One of the components, MB-08 Base Unit, remains invariable and provides display,
control and powering (from batteries or mains adapter) features. The other component, MC-08x, is
one of the removable modules, which determine measurement functions of the whole instrument.

   IT-08 is capable to satisfy all your requirements in radio, cable and satellite, analogue and digital
TV measurements.

    According to your measurement target, you can easily and quickly plug in one of the modules into
the Base Unit and perform the needed measurements. So, replacing the modules you can obtain
options featuring the following different applications:

 IT-081 TV Level Meter (MC-081 module plugged-in), 5 to 900 MHz range. Measurement of level,
       video-audio and carrier-noise ratios;

 IT-082 Digital Satellite Meter (MC-082 module plugged-in), 950 to 2150 MHz range.
       Measurement of BER and MER values for digital satellite (QPSK DVB-S). Powering LNB
       SAT. DiSEqC generator;

 IT-084 TDR Cable Reflectometer (MC-084 module plugged-in) for identification and precision
       fault location in cables up to 1,600 m in length. Resolution 0.11 m;

 IT-086 Optical Power Meter (MC-086 module plugged-in), measuring at –60 dBm to +18 dBm
       range and wavelengths 1310 and 1550 nm.

 IT-087 Digital TV QAM Signal Analyzer (MC-087 module plugged-in), 45 to 865 MHz range.
       Support of DVB-C. Measurement of carrier level, C/N and V/A ratios, channel power,
       MER, BER, and constellation diagram.

    Now we are pleased to offer you the five above modules, but the number is supposed to grow in
the nearest future. You can purchase MB-08 Base Unit accompanied by any of the module(s),
currently required, at your option. Later on, you can acquire any other module(s) to expand your
measurement abilities.

             IT-08 GENERAL FEATURES (similar for all the IT-08 family instruments):

     o MB-08 dimensions (WxHxD)               90 x 200 x 55 mm;
     o MC-08x dimensions (WxHxD)              60 x 70 x 27 mm ;
     o MB-08 weight                           0.6 kg (including batteries);
     o keyboard                               made of rubber;
     o display                                graphic LCD 128x64 pixels with backlight;
     o power supply
        • internal                            NiMH AA rechargeable batteries, 2100 mAh (6 pcs) ;
        • external                            12V/0.8A mains adapter ;
     o PC compatible interface                RS-232 serial port ;
     o operating temperature                  −10 to +40 °C;
     o user software update                   through serial interface from PC or the MC-08x
       Removable Module;


                                                    5
   2 GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION

2.1 Introduction

    This Operating Manual is intended for introducing the structure and purpose, and basic
instructions related to operation and servicing of the IT-087 Digital TV Signal Analyzer (Analyzer).
     The reliability of the IT-087 is ensured by means of fulfillment of regular maintenance
procedures. These procedures and their intervals are described in section 6.

   In this manual the following abbreviations are used:
   PC            - Personal Computer
   CD            - Compact Disk
   LCD           - Liquid Crystal Display
   IF            - Intermediate Frequency
   CDL           - Channel Data Logger
   SDL           - Spectrum Data Logger
   MER           - Modulation Error Ratio
   BER           - Bit Error Ratio
   QAM           - Quadrature Amplitude Modulation
   DVB-С         - Digital Video Broadcasting – Cable

   2.2 Safety Precautions

    Thoroughly inspect the product and carefully read the related documentation to get acquainted
with all the safety markings and instructions before you start to operate the Analyzer.
    Only trained service personnel aware of the hazards involved should perform repair on the
Analyzer.
    Tuning the Analyzer and replacement of the components that influence the accuracy of the
readings without service personnel is strictly prohibited, since the components used in the Analyzer
are custom-made and their replacement will result in inaccurate operation of the Analyzer. To
exclude the possibility of mechanical damage to the IT-08x, the instructions regarding the storage
and transportation (see sections 7 and 8) of the Analyzer must be observed.

   2.3 Function

    The IT-087 Digital TV QAM Signal Analyzer belongs to the family of IT-08 measurement
instruments and is intended for measurement of the parameters of DVB-C standard TV signal. The
Analyzer offers the following measurement modes for analogue channels: video carrier level, V/A
ratio, and C/N ratio. For digital channels the measurement modes are the following: channel power
and C/N ratio. DVB-C channels IT-087 offers measurement of reception quality parameters:
modulation error ratio MER, bit error ratio BER before Reed-Solomon decoder, number of error
blocks after Reed-Solomon decoder, immunity margin MARGIN, and constellation diagram. IT-
087 features automatic defining of setting parameters (channel frequency, symbol rate, and
modulation type).
    The IT-087 can be connected to a personal computer to access additional modes. The IT-087
operates in spectrum analyzer mode displayed on the built-in LCD. The Analyzer allows to measure
direct and alternating voltage of the remote power supply of the TV and broadcasting reception
distribution networks.

   The appearance of the Analyzer and its components are displayed in the following figures 1.1.
and 1.2.

                                                 6
                 Figure 1.1                                          Figure 1.2

This Operating Manual is made in accordance the software version 7.0.0.1 for IT-087.

2.4 Environment Conditions

Normal operating conditions:
a) ambient temperature (23±5) 0С;
b) relative air humidity (55±25)%;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg);
d) voltage transients correspond to installation category CAT.II.

Rated operating conditions:
a) ambient temperature from -10 to 40 °С;
b) relative air humidity no greater than 90% at 25 ºС temperature;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg).


2.5 Package Contents

The Meter package includes:
a) MB-08 Base Unit                                                  1 pc.;
b) MC-087 Removable Module                                          1 pc.;
c) Carrying Case                                                    1 pc.;
d) Rubber Holster                                                   1 pc.;
e) NiMH, AA Batteries                                               6 pc.;
f) PS12/0,8 Mains Adapter                                           1 pc.;
g) “F”-”F” Adapter                                                  1 pc.;
h) RS-232 Data Transfer Cable                                       1 pc.;
i) Operating Manual                                                 1 pc.

Optional package components:
                                              7
    a) МС-087 Removable Module                                     1pc.;
    b) “F”-”F” Adapter                                             1pc.;
    c) Operating Manual                                            1pc.


    Other optional accessories:
    a) Protective Cover;
    b) RS232-USB Adapter.

    2.6 Specifications

o   Frequency tuning range:                                    5 to 900 MHz;
o   Operating frequency range:                                 45 to 865 MHz;
o   Resolution                                                 125 kHz;
o   Channel allocation standard:                               loaded from PC;

              Input parameters:
              a) input impedance within operating frequency range: 75 Ohm;
              b) input impedance for frequencies up to 50 Hz: at least 200 kOhm.
              Allowed resulting value of AC input voltage for frequencies over 5 MHz: 3 V.
              Allowed resulting of AC and DC input voltage for frequencies under 5 MHz: 150 V.

o Built-in attenuator:                                            20, 40 dB;
o Input mismatch attenuation:
    - input attenuator off                                        14 dB;
    - input attenuator on                                         18 dB;
o Level measurement range with manual attenuator setting:
    - input attenuator off                                        30 to 80 dBμV;
    - input attenuator 20 dB                                      50 to 100 dBμV;
    - input attenuator 40 dB                                      70 to 120 dBμV;
o Measurement level resolution:                                   0,1 dB;
o Accuracy within 30 – 120 dBµV level range:                      ±1,5 dB;
o Accuracy at operating temperature:                              ±2,2 dB;
o Measurement channel passband for -3 dB level:                   230 ± 60 kHz;
o Input signal modulation:                                        QAM16, 32, 64, 128, 256;
o Symbol rate:                                                    1,0 to 7,0 Msps;
o MER measurement range:                                          21 to 34 dB (for QAM64);
o MER measurement step:                                           0,1 dB;
o BER measurement range:                                          1,0x10-2 to1,0x10-8;
o Frequency auto tuning step:                                     0,5 MHz;
o Frequency indication:                                           6 characters on LCD;
o Channel number indication:                                      3 characters on LCD;
o Signal level indication:                                        4 characters on LCD;
o Warm-up time, less than:                                        10 min.
o IT-087 powering:
   - from AC circuit with 220 ± 22 V voltage, 50 ± 0.5 Hz frequency with harmonics amount no
greater than 5% via PSU12/0.8 Mains Adapter;
    - from external DC source with 12 ± 0.6 V voltage and ripple level no greater than 0.5 V;
    - from batteries with capacity no less than 2100 mAh;
o Current consumed from external power source or batteries, not greater than: 0.8 А;
o Continuous stable operation under normal conditions, no less than 24 hrs, when powered by
    external source.
                                               8
o   Battery life under normal conditions (2100 mAh battery capacity), no less than:    6 hr;
o   Mean time between failures, no less than:                    10000 hours;
o   Average lifetime:                                            no less than 5 years;
o   Dimensions, not greater than:                               200x90x55 mm;
o   Package dimensions, not greater than:                        400х300х90 mm;
o   Weight, not greater than:                                    0,6 kg;
o   Weight in package, not greater than:                         2,2 kg.


    2.7 Application

    The IT-087 Digital TV QAM Signal Analyzer is intended for control and adjustment of
television and broadcasting reception distribution networks as well as of separate components of
such networks, or other electronic devices. The Analyzer allows measurement of channel power and
parameters of TV signal with analogue and digital (DVB-C standard) modulation.
    The Analyzer can be used both in laboratory conditions powered by an external power source
and in field conditions powered by the batteries.

    2.8 Design and Operation Overview

      2.8.1 Principle of Operation

    The Digital TV Signal Analyzer is a receiver of DVB-C signals with modulation of the traffic
stream to MPEG-2. The input tuner is a super heterodyne receiver with triple frequency conversion
(auto or manual frequency tuning). Modulation error ratio MER and constellation diagram are
measured in the process of QAM signal demodulation based on vector analysis. Bit error ratio BER
in digital stream is defined by means of analysis of Reed-Solomon decoder operation. Channel
power is measured by means of analogue-to-digital converter after signal peak detection at output of
logarithmic detector of the amplifier of the third IF. The principle of spectrum analyzer is based on
sequential analysis method with spectrum indication on the LCD of the Analyzer or PC.
    The view displayed on the screen in DVB-C reception quality parameters measurement mode is
the numeric values and graphic representation of the measured digital parameters (MER, BER
before Reed-Solomon decoder, error bit counter after Reed-Solomon decoder, and immunity
margin). The constellation diagram mode shows the vector structure of the quadrature components
of the demodulated digital signal on the phase plane. The spectrum analyzer mode shows the signal
magnitude – signal frequency bar-graph. The mode of measurement of the signal level in a
frequency point displays the numeric value of the signal level, V/A and C/N ratios.


      2.8.2 Structure Scheme

     The structure scheme of IT-087 is shown in figure 2.1.




                                                 9
                                                                                                   МС-087

                                                                       Tuner
              Low-pass filter    Attenuator        Attenuator
                                                                     5-900 MHz
                 (LPF)          0/20dB (A1)       0/20dB (A2)
                                                                         (T)




              Bandpass filter                                       Bandpass filter   Logarithmic gain
                                                     Mixer
               IF2 39 MHz                                           IF3 10,7 MHz       amplifier limiter
                                                      (M)
                 (BPF1)                                                (BPF3)             (LGAL)



              Bandpass filter     DVB-C         Local oscillator                         Frequency
             IF2 36,125 MHz     demodulator       28,3 MHz                                decoder
                 (BPF2)            (DD)              (LO)                                   (FD)




                                                                                                     МB-08
                                                  Analogue-to-
                                Control unit                        Peak detector
                                                digital converter
                                  (CU)                                 (PD)
                                                      (ADC)




                                Nonvolatile      Liquid-crystal                        Low frequency
                Keyboard                                            Mains adapter
                                 memory             display                              amplifier
                  (K)                                                   (MA)
                                (NVRAM)             (LCD)                                  (LFA)


                                               Figure 2.1

       Input signal, the strength of which can be dropped by means of the two successive attenuators
(A1) and (A2), is tuned into the second IF by the tuner (Т). The tuner is the heterodyne detector
with double frequency conversion. The first IF is 1220 MHz. In the signal level measurement mode
the second IF is 39 MHz, for digital channels demodulation the second IF is 36,125 MHz.
       The signal of the second IF, after the bandpass filter (BPF1) and conversion in the mixer (M1)
has the third IF, and further filtered at 10,7 MHz frequency by IFF3, which determines the receive
frequency band.
     Logarithmic gain amplifier limiter (LGAL) performs logarithmation and signal detection.
     Peak detector (PD) allows measuring of video carrier level by means of analogue-to-digital
converter (ADC). The digital code of the input signal peak level logarithm is defined as real value
and is corrected in accordance with the calibration matrix of the control unit (CU) microcontroller.
    In digital signal demodulation mode the signal with the second IF, after bandpass filter (BPF2)
filtering comes to DVB-C demodulator (DD), which performs demodulation and signal parameters
measurement. The measured results are processed by the control unit.
    The control unit receives the commands from the user entered via keypad, processes the data,
displays them on the LCD, and also controls the operation with external PC.
    The nonvolatile memory (NVRAM) stores the calibration coefficients specified by the
manufacturer, Data Logger records, and service information.
    The Mains Adapter (MA) forms the required power from the batteries and from the external
power source.
     In the sound check unit the limited by FM signal is transmitted from the LGAL output to
frequency decoder (FD). The low frequency signal then at the FD output is amplified in the low
frequency amplifier (LFA) and goes to the built-in beeper.



                                                   10
      2.8.3 Component Arrangement
    The IT-087 is made up of two components. Both modules are contained within plastic
shockproof dismountable cases that also include printed wiring as well as space-wired
interconnections. MB-08 Base Unit dimensions are 200x90x55 mm. MC-087 Removable Module
with 70x57x26 mm dimensions is plugged in the Base Unit and connected to it via specific
connector.
    The front panel of the Base Unit represents the keypad and a graphical display. The right panel
has a USB connector, external power source connector and an on-off switch. The Removable
Module connector is located on the back panel. The Removable Module has the 75-Ohm input “F”
connector for Base Unit connection.


3 PREPARATION FOR OPERATION

    Perform external examination to make sure your IT-087 is free from any visible mechanical
damage.
    Upon the receipt of the package, compare the items contained within it with the provided list
(see section 1.3).
    If the IT-087 has been kept in the environment other than the rated operating conditions, leave
your Analyzer in facilities with normal operating conditions at least for 2 hours prior to operation.


4 OPERATION PROCEDURE

4.1 Controls and Indicators

    The location of controls, adjusters, and indicators is shown in figure 1.1. The controls have the
following functions:
    а) «F1», «F2», «F3», «F4» functional keys are intended for entering the commands
corresponding to icons shown on the screen of the IT-087;
    b) «STD BY» key activates a single sweep in spectrum analyzer of bar-graph modes. Lighing of
the key indicates the power supply from an external power source;
    c) «    » double key is intended to control the backlight of the screen. Left side switches the
backlight on, right side switches the backlight off;
    d) «MENU/ENTER» key is intended for selecting the current command or for returning to the
previous level in menu;
    e) « », « », «◄» , and «►» arrows allow to edit the current operation mode;
    f) alphanumeric keyset allows entering text or numeric data;
    g)«ON/OFF» switch is intended for switching the power of the Analyzer on/off;
    h) «     12VDC» connector is intended for connection to the external power source;
    i) «Serial Port» connector is intended for connecting the Analyzer to a computer;
    j)«INPUT» connector is intended for signal input, “F”-type connector.

4.2 Preparation for Measurements

   Before you start to operate your IT-087 make sure to carefully read this Operating Manual as
well as to inspect the location of the controls and indicators of the Analyzer. (see section 4.1).
   To prepare your Analyzer for operation with the external power source proceed as follows:
   a) unlock the Carrying Case and take the Analyzer and the Main Adapter out;
   b) connect the MC-087 Removable Module to MB-08 Base Unit, if they were stored separately;


                                                 11
    c) connect the Main Adapter to the connector located on the side panel of the IT-087 and then to
the power source;
    d) set «On/Off» switch located on the right side panel to “On”.
    To prepare your IT-087 for operation in stand-alone mode, powered by the batteries, proceed as
follows:
    а) unlock the Carrying Case and take the IT-087 and the Mains Adapter out;
    b) connect the MC-087 Removable Module to MB-08 Base Unit, if they were stored separately;
    c) set «On/Off» switch located on the right side panel to “On”.
    If the Removable Module memory stores a version of the software which is different from the
software installed in the Base Unit, then the Analyzer will automatically switch to software loading
mode after the power has been switched on. The loading process is indicated by flashing backlight
of the Analyzer screen.
    CAUTION! Do not switch the power off while the software is being loaded! This may lead to
    the loss of capability of loading the software onto your Analyzer without the use of a PC.
    If the Removable Module software version does not differ from the software installed, then the
IT-087 starts to check the Removable Module after the power has been switched on. The
corresponding message will appear on the screen of the Analyzer. After successful check, the
following message (see figure 4.1) will appear on the screen:




                                              Figure 4.1

    The screen displays the name and type of the Analyzer. After approximately 1 second, the
Analyzer will switch to self-test and configuration testing mode.
     If the Base Unit previously was operated with Removable Module of a different type, then
when for the first time switched on your IT-087 might start calibration matrices loading onto the
Base Unit. In this process the currently loaded matrix type will be indicated on the screen.
    CAUTION! Do not turn the power off during the process of loading! This can lead to the
    incorrect loading of the calibration matrices and as a result high measurement error.
    If the IT-087 operates correctly, the voltage of both main and stand-by batteries is normal, and
the temperature inside the Removable Module corresponds to the operating conditions, then the
message similar to that in figure 4.2 appears on the screen. In case any defect has been detected, one
of the error messages described in section 4.5 appears. Two seconds later, the main mode-selection
menu can be seen on the screen (see figure 4.3).




                                              Figure 4. 2

    To accelerate the procedure of turning the Analyzer on, press and «MENU/ENTER» key, and
set «On/Off» switch located on the side panel to “On” position. The IT-087 will automatically
                                                 12
display the main menu (figure 4.3). Release the key after this. If the Analyzer previously was
operating with a different Removable Module, then the accelerated switching on after changing the
Module is not recommended. Follow the instructions in sections 4.2.2-4.2.4.
    To make sure that the Analyzer is operating properly perform the procedure described below.
   Select        icon in the main menu using « » and « » keys. Press «F2» key. Select the row
with the required parameter using « », « » key, and set the following values by «◄» and «►»:
   - Sound check: off
   - Language: english or Sprache: deutsch or Язык: русский
   - Click: type 1.
   Press «MENU/ENTER». Test the functioning of the keypad by means of consecutive pressing
«1» … «9», «0», «С», and the functional keys. Each pressing must to be accompanied with sound.
   Set the        icon at the bottom of the main menu screen using « » and « » keys and press
«F2». Select the required parameters using « », « » and then set the following values using «◄»
and «►» keys:
    - Attenuator: autoselect
    - Map: off
    - Mode scan: 1:1
    - Acquire: sample
    - Amplitude: auto
    - DVB-C scan: on.
   Press «MENU/ENTER». Set the              icon at the bottom of the main menu screen using « »
and « » arrows. Press «F4». Input signal spectrum will appear on the screen (figure 4.5). Set the
scan start to 500 MHz by pressing «5», «0», «0», «MENU/ENTER» keys. START=500MHz
message will appear in the bottom line of the screen.
    Press «MENU/ENTER» key. Set the               icon at the bottom of the main menu screen using
« » and « » arrows. Press «F1». The screen of the signal level measurement in the frequency
point will open (figure 4.4). Set the measured signal frequency to the video carrier frequency of the
TV channel 25 pressing «2», «5», «MENU/ENTER». The second line will display the frequency
value 503,250 MHz. The third line will show the channel number Channel = 25. To return to the
main menu press «MENU/ENTER» key.


4.3 Measurement Procedure
4.3.1 General Information
    The IT-087 offers five function of signal level measurement and three functions of DVB-C
signal reception quality.
    a) measurement of signal level in the frequency point simultaneously with TV signal
parameters, as well as alternating and direct power at the input of the Analyzer in LEVEL
measurement mode;
    b) signal spectrum analysis in SPECTRUM mode;
    c) TV signal parameter measurement in SCAN mode;
    d) TV signal level tilt measurement in TILT mode;
    e) TV signal level ripple measurement in RIPPLE mode;
    f) DVB-C reception quality measurement with table representation in DVB-C TABLE mode;
    g) DVB-C reception quality measurement with graphic representation in DVB-C GRAPHIC
mode;
    h) DVB-c reception quality measurement with constellation diagram in DVB-C
CONSTELLATION mode.


                                                 13
    The c), d) and e) modes perform bar-graph measurements. To select the required mode use
arrow keys or functional keys.
    Pressing « » and « » arrows in the main menu (figure 4.3) move the icon of the required
mode into the bottom line of the screen. The icons correspond to the modes as follows:

   a) LEVEL mode .........................................           ;

   b) SPECTRUM mode .................................                ;

   c) SCAN mode ............................................         ;

   d) TILT mode..............................................        ;

   e) RIPPLE mode .........................................          ;
   f) DVB-C TABLE mode.............................                  ;

   g) DVB-C GRAPHIC mode .......................                     ;
   h) DVB-C CONSTELLATION mode .........                             .




                                                          Figure 4. 3

    To complete the selection of the mode press the functional key, which is under the required
icon. To return back to the main menu press «MENU/ENTER» key. If you are selecting the mode
with the active channel plan, first the following message will appear on the screen:
    Channel table name: with the name of the selected plan.

4.3.2   LEVEL Measurement Mode
    The         icon in the main menu refers to this mode. The signal level in the frequency point is
displayed on the screen in this mode. The screen view you can see in figure 4.4:
    Index 1 is the signal level of the frequency, which value is marked by index 2.




                                                          Figure 4. 4

    Number of the channel containing the current frequency point is displayed in position indexed
3. Indexes 4 and 7 show the TV signal parameters: V/A and C/N ratios in the signal spectrum. For
the channels with digital modulation, DIGITAL will be indicated in position indexed 4. Index 5 is
a signal level represented as an indicator line along the dB scale. Value of the direct or effective
                                                                14
alternating voltage at the input (frequency 50 Hz of remote cable power supply) is shown in
position with index 6.
    To measure the signal level in the required frequency point, set the frequency value by «◄»,
«►» arrows. To select the channels use « », « » arrows. To enter the channel number from the
keypad, first press «F1». enter channel message will be for a short moment displayed on the screen.
To enter the number use the alphanumeric key set. To enter special channels first press «C» key.
After you have entered the number press «MENU/ENTER». If the number is incorrect, after you
pressed «MENU/ENTER» key the previously saved channel number value will be restored. To
enter the frequency value from the keypad, first press «F2». enter frequency message will be for a
short moment displayed on the screen. To enter the frequency value in MHz use the alphanumeric
keyset. After you have entered the number press «MENU/ENTER». If the frequency value is
incorrect, after you pressed «MENU/ENTER» key the previously saved value will be restored. The
frequency value will scroll from max to min with 0,125 MHz step. The value being edited will be
highlighted in inverse colour and flashing.
    NOTE ! If you press « », « » keys in channel plan mode (section 4.3.7) the selection will be
fulfilled within the current channel plan, and in this case instead of channel number (index 3)
channel name from this channel plan will appear. If you enter the number of channel directly you
can access any channel. In this case, the channel number (if it does not belong to the current channel
plan) will appear in the position with index 3.
    If the set frequency does not match the video carrier frequency, you will see on the screen
Channel= message or channel name on the dark background.
    Tuning to the channels and their numbering will be fulfilled in accordance with the channel
allocation standard (section 4.3.10).
    Index 1 shows the measured level in dB related to 1 µV in the set point. To define V/A and C/N
ratios for analogue channels the IT-087 performs measurements in three frequency points. The first
one is the video carrier frequency (or the frequency your Analyzer is set to). The second frequency
point is the audio carrier frequency. The third one is the point 0,5 MHz shifted down from the
second one. V/A ratio will be indicated in position indexed 4. C/N ratio will appear in position
indexed 7.
    The audio carrier frequency is defined in accordance with the frequency set by the current TV
system. ( TV system, section 4.3.10).
    The IT-087 offers the capability of the frequency point selection for optimization of noise
measurements while operating by channel plan. (4.4.2.1).
    For digital channels your Analyzer will perform measurements of two parameters: actual
channel power within the channel frequency band and the ratio of the digital TV signal to the noise
in the channel.
    There are two methods of the actual channel power. In the fast scan mode (Mode scan: fast,
section 4.3.10) can be applied power estimation measurement mode. The Analyzer will measure the
channel power of the set frequency (frequency value in the center of the channel) and then will
calculated the actual channel power by the following formula:
    Uac.dg = Um + 10xLg(Bdg/Bm) + K, where
    Uac.dg - actual channel power;
    Um       - measured channel power;
    Bdg      - digital channel frequency band;
    Bm       - frequency band of the measurement;
    K        - correction factor.
    This method is fast and rather accurate assuming that the spectrum is almost uniform throughout
the channel band. If the spectrum variation is high this method can give big error.
    In the integration method the Analyzer will perform measurements of the power within all the
channel band with 125 kHz step, and then calculate the average value, and recalculate it into the
actual power value.

                                                 15
    This method is slower, but more accurate. It can be enabled in the Mode scan: 1:1, 1:2 or 1:4
(п. 4.3.10).
    To define the ratio of the digital TV signal to the noise in the channel your Analyzer will
measure the noise outside of the channel band. The noise frequency shift is determined by the
channel plan («Fnoise» parameter).
    The C/N ratio An will be calculated by the following formula:
    An = Um - Un, where
    Um       - measured channel power;
    Un       - noise power.
    Digital channel parameters (central frequency, bandwidth, frequency shift for noise
measurement) should be taken from the channel plan. To increase the accuracy of the measurement
you should set the values either manually or in auto mode (section 4.4.2.1).
    Performing measurements for digital channels it is recommended to apply the mode of
calculation for the maximum values: Acquire: average: 8 (section 4.3.10). This method ensured
more accurate results for wideband noise-like signals.
    The remote cable power supply volage is measured from 10 to 100 V. The absolute error of the
measurement is lower than ±1,5 V. The measured value of the voltage is indicated in position
indexed 6. If the voltage is direct you will see VDC= message on the screen, if it is alternating
VAC= message will appear.


4.3.3 SPECTRUM Measurement Mode

   The          icon in the main menu refers to this mode. This mode displays the signal spectrum.
See figure 4.5:




                                              Figure 4. 5

    Index 3 shows the signal level in the frequency point (value is displayed in index 1) indicated by
the marker (index 4). The marker is represented as a vertical dashed line. The scan span limits by
frequency are indicated in positions indexed 2 and 5.
    You can navigate the marker by means of «◄» and «►» keys.
    You can select any of the four parameters of the spectrum display by the functional keys, and
then set it by « » and « » keys.
    To select the reference level press «F1». Ref.lev. = 0 dB message will appear on the screen.
Using « », « » arrows set the displayed level scale shift. If the mode of reference level automatic
selection is enabled (section 4.3.10) Auto mode message will appear on the screen.
    The level scale parameter is set by «F2» key. Scale = 10 dB/Div. message will appear. Using
« », « » arrows select the scale division from the available values 5, 10 and 20 dB/Div.
    To set the scanning start press «F3» key. Start = 50 MHz message will appear. Using « »,
« » arrows select the start of the sweep with 5 MHz step.
    To set the frequency scale press «F4». Span = 2 MHz/Div. message will appear. Using « »,
« » arrows select the the scale division from the available values 2, 4, 8, 16 MHz/Div. The
scanning span will be 14, 28, 56, 112 MHz correspondingly.


                                                 16
    You can enter the scan start frequency using the alphanumeric keyset. After you have set the
frequency in MHz press «MENU/ENTER». In case the new value is incorrect, the previous value
will be restored after you pressed «MENU/ENTER» key. To set scan start frequency by channels,
press «С» key and enter the channel number. Press «MENU/ENTER» and the marker will move to
the video carrier frequency point of the selected channel.
    If you select the frequency scale division greater than 2 MHz/Div., more than one frequency
point will be displayed in one column of the spectrogram, as the sweep step is always 125 kHz. In
this case the higher magnitude will be reported on the screen.

4.3.4   SCAN Measurement Mode
    The        icon in the main menu refers to this mode. This mode displays the signal levels as a
bar-graph. See figure 4.6:




                                             Figure 4. 6

    Index 1 shows the number of the channel indicated by the marker (index 4). The marker is
represented as a vertical dashed line.
    Level value (index 3) and signal parameters (indexes 2 and 5) correspond to the channel
indicated by the marker.

   You can navigate the marker by means of «◄» and «►» keys. You can enter the channel
number using the alphanumeric keyset. After you have entered the number press
«MENU/ENTER».
   In this mode you can adjust the magnitude scale parameters: scale division and shit. Select the
required parameter by «F1» or «F2» (section 4.3.3) and set the value by « » and « » keys.
   When you operate with a channel plan, the scanning will be fulfilled only for the selected
channels. In this case the channel name will be displayed in the position indexed 1. The channel
name will be highlighted in inverse colour if the frequency value does not match the video carrier.
Select the channels from the channel plan by «◄» and «►» keys. You can set the marker to any
channel using the alphanumeric keyset, in this case the channel number will be displayed in
position indexed 1, and the parameters of the channel will be shown in positions indexed 2, 3 and 5.
   It the channel in the channel plan is digital it will be described as DIGITAL (index 2), and the
measurements will be performed for the digital channel (section 4.3.2).


4.3.5   TILT Measurement Mode

    The         icon in the main menu refers to this mode. This mode displays signal levels as
vertical bars and the tilt line between the peaks of the two selected channels. The screen view is
represented in the figure 4.7:




                                                17
                                              Figure 4. 7

    Index 1 shows the channel number, indicated by the marker (index 5). The marker is
represented as a vertical dashed line. The reference marker (index 2) indicates the channel number
displayed in position indexed 4. The marker represents a triangle at the top of the screen. Between
the peaks of the selected channels the tilt line is displayed. Index 3 shows the value of the difference
between the selected channels.
     You can navigate the marker by means of «◄» and «►» keys. You can enter the marker
location using the alphanumeric keyset. After you have entered the channel number press
«MENU/ENTER».
    In this mode you can adjust the magnitude scale parameters: scale division and shit. Select the
required parameter by «F1» or «F2» (section 4.3.3) and set the value by « » and « » keys. To set
the location of the reference marker press «F3». Base marker message will appear on the screen.
Using « » and « » arrows set the reference marker location.
    When you operate with a channel plan, the scanning will be fulfilled only for the selected
channels. You can select the channels from the channel plan by «◄» and «►» keys. Also you can
set the marker to any channel using the alphanumeric keyset.

4.3.6 RIPPLE Measurement Mode

    The       icon in the main menu refers to this mode. In this mode the screen displays TV signal
levels as vertical bars and two horizontal dotted lines between the peaks of the two selected
channels, which show the ripple. See figure 4.8:




                                              Figure 4. 8

    Index 1 shows the channel number indicated by the marker (index 5), represented as a vertical
dashed line. The reference marker (index 2) indicates the channel number displayed in position
indexed 4. The marker represents a triangle at the top of the screen. Between the peaks of the
selected channels the ripple is displayed. Index 3 shows the value of the difference between the
selected channels.
     You can navigate the marker by means of «◄» and «►» keys. You can enter the marker
location using the alphanumeric keyset. After you have entered the channel number press
«MENU/ENTER».
    In this mode you can adjust the magnitude scale parameters: scale division and shit. Select the
required parameter by «F1» or «F2» (section 4.3.3) and set the value by « » and « » keys. To set
the location of the reference marker press «F3». Base marker message will appear on the screen.
Using « » and « » arrows set the reference marker location.

                                                  18
    When you operate with a channel plan, the scanning will be fulfilled only for the selected
channels. You can select the channels from the channel plan by «◄» and «►» keys. Also you can
set the marker to any channel using the alphanumeric keyset.

4.3.7   DVB-C in Table Representation Measurement Mode

    The        icon in the main menu refers to this mode. In this mode the screen displays the table
of parameters showing the DVB-C signal reception quality. See figure 4.9:




                                              Figure 4.9
    The three upper lines display the setting parameters. The top line shows channel number,
channel name within the channel plan (if a channel plan was selected), and the symbol of QAM
signal synchronization:
    « - » - no signal;
    « U » - (unlock) the magnitude of the input signal is sufficient, but no synchronization of
QAM demodulator;
    « L » - (lock) the magnitude of the input signal is sufficient and QAM demodulator is active.
     The second line indicates the set frequency and the measured value of input signal frequency
shift in MHz. If there is no synchronization of QAM demodulator, zero will be displayed in the
frequency shift position.
     The third line indicates the modulation type and the measured symbol rate, if the QAM
demodulator synchronization has been achieved, otherwise dashed line will be shown.
     The next four lines display the values of the measured parameters. The first parameter is the
modulation error ratio MER. The second one is immunity margin in dB related to BER threshold
value – Margin. The third parameter is the bit error ratio in the digital stream before Reed-Solomon
decoder – perBER. BER value will be indicated depending on achievement of the threshold value
2x10-4. If the BER value is under the threshold you will see pass (allowed value) message,
otherwise you will see fail message. The bottom line shows parameter Real Err, which indicates
the number of error blocks after Reed-Solomon decoder and the interval of time of their counting.
    MER parameter associates with the input signal C/N ratio, and in keeping with the immunity
margin Margin, allows to estimate the capability of the receiver to decode the signal without errors.
BER parameter as well as MER characterizes the quality of the input signal and shows the amount
of errors in the input data stream. The threshold value of this parameter is 2x10-4. If BER is under
the threshold, this ensures the probability of errors at Reed-Solomon decoder output less than 10-
10
   …10-11. In this case the data stream can be considered quasi error free, and ensuring reliable
television reception. Margin describes MER margin in dB to BER
     Frequency adjustment.
    To measure the signal quality parameters in a channel, select the required one by « » and « »
keys, or enter its number using the alphanumeric keyset. To enter special channels first press «C»
key. After you have entered the number press «MENU/ENTER». If the number is incorrect, after
you pressed «MENU/ENTER» key the previously saved channel number value will be restored. In
“Channel plan operation” mode pressing « » and « » keys will scroll the digital channels, and
in the top line you will see the name of a channel from this channel plan. You can tune to any


                                                 19
channel entering its number by the alphanumeric keyset. If the channel does not belong to the
selected channel plan, its name will not be shown.
    If no channel plan is active, tuning to the channels and their numbering will be fulfilled in
accordance with the channel allocation standard (section 4.3.10).
    Demodulation parameters adjustment.
    To perform measurement of the signal quality the QAM demodulator requires the setting of the
following parameters: modulation type and symbol rate. These parameters can be set through a
channel plan or defined automatically while tuning to the channel. If you operate a channel plan, the
required parameters will be determined by this plan. In case QAM demodulate cannot achieve
synchronization with the input signal within 3 sec., signal parameters auto detection mode becomes
active. The parameters are being defined during 5 sec. After the synchronization has been achieved,
the defined values of the parameters will be displayed on the screen. In case of no synchronization
the dashed lines will be shown in the fields of the values.
    If no channel plan is active, the demodulator will immediately enable the parameter auto
detection mode.
     Signal quality parameters measurement.
     After QAM decoder synchronization has been achieved, the Analyzer will measure the signal
quality. During the process of measurement you will see in the value field the Sampling message.
     To fine tune the current settings you can you the supplementary table. To access this table press
«F1». The view of the table is represented in figure 4.10. To return to the measurement mode press
«MENU/ENTER» or «F1» key.




                                             Figure 4.10
   To zero the counter of the error blocks press «F4».

4.3.8 DVB-C in Graphic Representation Measurement Mode

    The       icon in the main menu refers to this mode. In this mode the screen displays setting
parameters and two measured parameters: BER and MER in numeric and graphic representation,
showing the DVB-C signal reception quality. See figure 4.11:




                                             Figure 4.11




                                                 20
    The top line displays the following setting parameters: channel number, channel name within
the channel plan (if a channel plan was selected), and the symbol of QAM signal synchronization:
    « - » - no signal;
    « U » - (unlock) the magnitude of the input signal is sufficient, but no synchronization of
QAM demodulator;
    « L » - (lock) the magnitude of the input signal is sufficient and QAM demodulator is active.
    The other area of the screen is divided into two fields for the measured parameters. The first
field is the modification error ratio MER. The second one is the error bit frequency in the digital
stream before Reed-Solomon decoder – perBER. BER value will be indicated depending on
achievement of the threshold value 2x10-4. If the BER value is under the threshold you will see pass
(allowed value) message, otherwise you will see fail message. Each parameter is represented both
in numeric and graphic (as an indicator line) form.
    Frequency adjustment.
    To measure the signal quality parameters in a channel, select the required one by « » and « »
keys, or enter its number using the alphanumeric keyset. To enter special channels first press «C»
key. After you have entered the number press «MENU/ENTER». If the number is incorrect, after
you pressed «MENU/ENTER» key the previously saved channel number value will be restored. In
“Channel plan operation” mode pressing « » and « » keys will scroll the digital channels, and
in the top line you will see the name of a channel from this channel plan. You can tune to any
channel entering its number by the alphanumeric keyset. If the channel does not belong to the
selected channel plan, its name will not be shown.
    If no channel plan is active, tuning to the channels and their numbering will be fulfilled in
accordance with the channel allocation standard (section 4.3.10).
    Demodulation parameters adjustment.
    To perform measurement of the signal quality the QAM demodulator requires the setting of the
following parameters: modulation type and symbol rate. These parameters can be set through a
channel plan or defined automatically while tuning to the channel. If you operate a channel plan, the
required parameters will be determined by this plan. In case QAM demodulate cannot achieve
synchronization with the input signal within 3 sec., signal parameters auto detection mode becomes
active. The parameters are being defined during 5 sec. After the synchronization has been achieved
L (lock) symbol will be displayed on the screen.
    If no channel plan is active, the demodulator will immediately enable the parameter auto
detection mode.
     Signal quality parameters measurement.
     After QAM decoder synchronization has been achieved, the Analyzer will measure the signal
quality. During the process of measurement you will see in the value field the Sampling message.
     To fine tune the current settings you can you the supplementary table. To access this table press
«F1». The view of the table is represented in figure 4.10. To return to the measurement mode press
«MENU/ENTER» or «F1» key.

4.3.9 DVB-C in Constellation Diagram Representation Measurement Mode

    The        icon in the main menu refers to this mode. In this mode the screen displays the table
of parameters characterizing the DVB-C signal quality, and constellation diagram. See figure 4.11:




                                             Figure 4.11
                                                21
    The top line displays the following setting parameters: channel number, channel name within
the channel plan (if a channel plan was selected), and the symbol of QAM signal synchronization:
    « - » - no signal;
    « U » - (unlock) the magnitude of the input signal is sufficient, but no synchronization of
QAM demodulator;
    « L » - (lock) the magnitude of the input signal is sufficient and QAM demodulator is active.
    In the left part of the screen you can see the constellation diagram of the signal, with quadrature-
amplitude modulation QAM, which is the graphic representation of vector diagram. The diagram is
divided into four quadrants, each containing dots made by the peaks of the vectors of demodulated
signals quadratures. In the ideal case the diagram represents a number of dots (nods) on the phase
plane. For example for QAM64 it will be 64 dots. The noise influence makes the dots to ‘spread’
into spots. Analyzing the form of the dots and their distribution on the phase plane it is possible to
define the noise behaviour.
    In the right part of the screen the measured parameters are displayed. The first parameter is the
modification error ratio MER. The second one is immunity margin in dB related to BER threshold
value – Margin. The third parameter is the error bit frequency in the digital stream before Reed-
Solomon decoder – perBER.
     Frequency adjustment.
    To measure the signal quality parameters in a channel, select the required one by « » and « »
keys, or enter its number using the alphanumeric keyset. To enter special channels first press «C»
key. After you have entered the number press «MENU/ENTER». If the number is incorrect, after
you pressed «MENU/ENTER» key the previously saved channel number value will be restored. In
“Channel plan operation” mode pressing « » and « » keys will scroll the digital channels, and
in the top line you will see the name of a channel from this channel plan. You can tune to any
channel entering its number by the alphanumeric keyset. If the channel does not belong to the
selected channel plan, its name will not be shown.
    If no channel plan is active, tuning to the channels and their numbering will be fulfilled in
accordance with the channel allocation standard (section 4.3.10).
    Demodulation parameters adjustment.
    To perform measurement of the signal quality the QAM demodulator requires the setting of the
following parameters: modulation type and symbol rate. These parameters can be set through a
channel plan or defined automatically while tuning to the channel. If you operate a channel plan, the
required parameters will be determined by this plan. In case QAM demodulate cannot achieve
synchronization with the input signal within 3 sec., signal parameters auto detection mode becomes
active. The parameters are being defined during 5 sec. After the synchronization has been achieved
L (lock) symbol will be displayed on the screen.
    If no channel plan is active, the demodulator will immediately enable the parameter auto
detection mode.
     Signal quality parameters measurement.
     After QAM decoder synchronization has been achieved, the Analyzer will measure the signal
quality. During the process of measurement you will see in the value field the Sampling message.
    To view only quadrant of the diagram, select the required one using «◄» and «►» arrows and
press «F4» key. To return to full diagram screen press «F4» again.
    To fine tune the current settings you can you the supplementary table. To access this table press
«F1». The view of the table is represented in figure 4.10. To return to the measurement mode press
«MENU/ENTER» or «F1» key.

4.3.10 Measurement Parameters Adjustment Mode
     The       icon in the main menu refers to this mode. In this mode the screen displays the list of
parameters, which perform the setting of the measurement modes. Use « » and « » keys to select
the required parameter to be edited. Edit the required values by means of «◄» and «►» arrows.

                                                  22
     There are seven parameters available for editing by the user:
    Attenuator. Selection of the attenuator.
    This parameter tunes the attenuation at the input of the Analyzer. The values available: 0 dB, 20
dB, 40 dB, and automatic selection (auto).
     Map. Selection of the channel plan.
     This parameter is intended for selection of the channel plan from the list of the prepared plans.
The values available: on (off), channel plan names (only from the prepared list). If a channel plan
has been selected, when the Analyzer turns to any measurement mode it will first display the name
of the plan for 1 sec.
    Mode scan. Selection of the scan mode.
    This parameter adjusts the starting cycle and scanning speed in the modes of spectrum analysis
and bar-graph measurements. The values available: fast, the maximum scanning speed of 0,3 sec.,
1:1 – scanning cycle 0,5 sec., 1:2 – scanning cycle 1 sec., 1:4 – scanning cycle 1,5 sec., single –
single sweep by «STD BY» key. The time indicated for the starting cycle is shown for the spectrum
analyzer with the scan scale of 2 MHz/Div.
    Acquire. Selection of the measured data analysis procedure.
    This parameter adjusts the measured data calculation scheme. The values available: sample –
the measured value is immediately displayed, average:4 – the displayed value is the average of four
measurement results, average:8 – the displayed value is the average of eight measurement results,
peak – the displayed value is calculated by quasi peak law. If the signal magnitude is growing in a
frequency point, the measured value will be immediately displayed, and the value will be reduced
by 1% with every sweep. The peak mode can be enabled only in spectrum analyzer mode. In other
measurement modes the data will be displayed as in real mode.
     Amplitude. Enabling of the auto selection mode of the magnitude reference level shift.
    The values available: manua – manual setting of the shift, auto – auto selection of the reference
level shift. If the selection is made automatically, in SPECTRUM and SCAN modes the display
range shift will be set by the maximum level value on the screen.
    Threshold. Selection of the threshold for auto detection of a channel plan.
    This parameter adjusts the threshold level. The values available: 10…80 dBμV. The parameter
is used for auto detection of a channel plan (section 4.4.2.4).
    Scan DVB-C. Enables channel search and defining of the digital signal parameters while auto
detection of a channel plan and scanning of a CDL page.
    TV sys. Name of the channel allocation standard set in the Analyzer. The standard parameters
can be edited and set in the Analyzer only by means of ViewIt1.5 program.


4.4 Data Logger Function

            4.4.1 General Information
    Data Logger function is intended for automation of the procedure of recording the measurement
results. There are three data logger directories: Channel Plan List, Channel Data Logger (CDL), and
Spectrum Data Logger (SDL). The data logger memory is common for all the directories and is of a
dynamic type. The memory capacity allows to save up to 32 channel plans (up to 112 frequency
points per plan), up to 112 CDL pages (with maximum number of channels), and up to 14 SDL
pages (within full frequency range), or up to 110 SDL pages (for up to 100 MHz wide frequency
bands). The Analyzer allows to view the saved data off-line or by means of a computer. To check
the data logger memory, the IT-087 offers memory manager mode. This mode allows for testing,
free resources determination, and formatting of the memory.




                                                 23
           4.4.2 Channel Plan List

            icon in the main menu corresponds to this mode. The mode allows to perform all the
operations with channel plans: viewing, editing, deleting, and creation of new pages. See figure
4.12.
    The top line (index 1) divides the table into columns. The first column is a plan number (from 1
to 32). Using « », « » arrows or by means of the alphanumeric keyset you can select the channel
plan. If you entered the number the channel will appear at the top line of the screen. The second
column is a plan name of up to 16 characters in length (index 2). This name is assigned by user
during creation and later can be edited. If the channel plan is empty it will be indicated by
*****empty***** message. The last column is the number of frequency points in the channel plan
(index 4). The bottom line (index 3) shows the commands that can be accessed by the functional
key. If a channel plan is selected in measurement parameters setting mode (section 4.3.10) its name
will be highlighted in inverse colour.




                                            Figure 4. 12

    List of available commands:
    a) viewing of the channel plan (Read). Select by «F1» key. Allows to view the required channel
plan;
    b) editing of the channel plan name (Name). Select by «F2» key . Allows to edit the required
plan name;
    c) deleting of the channel plan (Delete). Select by «F3» key. Allows to delete a selected channel
plan;
    d) creation of the new channel plan (New). Select by «F4». Allows to automatically create the
new channel plan.


             4.4.2.1 Channel Plan Editing
    To edit the channel plan select the required one and press «F1». The screen view is shown in the
figure 4.13:




                                            Figure 4. 13

     The table represents a channel plan. The top line (index 1) divides the table into columns. The
first column is the number of frequency point (from 1 to 101). The second column is the frequency
of the point in kHz (index 2). The third column is the number of TV channel covering the frequency
point (index 4). The number of the TV channel will be highlighted in inverse colour if the channel

                                                 24
is digital. The fourth column is the of the frequency point (TV channel) up to 6 characters (index 5).
The bottom line (index 3) shows the commands that can be accessed by the functional keys. These
commands are as follows:
    a) editing of the frequency point (Edit). Select by «F1». Allows to edit the selected frequency
point;
    b) saving of the channel plan (Save). Select by «F2». Allows to exit the mode and save the
channel plan into the memory of the Analyzer;
    c) deleting of the frequency point (Delete). Select by «F3». Allows to delete the selected
frequency point.
    d) creating a new frequency point (New). Select by «F4». Allows to create the new frequency
point.
    To edit the frequency point, by « » and « » keys select the required channel (the selected line
will be framed), and press «F1». The table of frequency point parameters will appear. See figure
4.12.




                                             Figure 4.14

    8 parameters are available for editing in the table for each frequency point:
    Type: type of the channel: analogue or digital;
    Channel: number of the channel;
    Name: name of the channel;
    Fcarrier: frequency of the video carrier for analogue channel or central frequency for digital
channel frequency band;
    Fnoise: frequency shift for C/N ratio measurement. The values available from -8000 to +8000
kHz with 125 kHz step;
    Bandwidth: frequency band width (for channels with digital modulation). The values available
from 1000 to 8000 kHz with 250 kHz step;
    Modulation: type of modulation (for channels with digital modulation). The following values
are available: QAM16, QAM32, QAM64, QAM128, QAM256.
     Symb rate: symbol rate (for channels with digital modulation). The values available from 1,000
to 7,250 Msps.
    The initial values of the parameters are set during the automatic detection of the channel plan
and can be manually edited by the user by means of frequency point editing function or can be
determined automatically by automatic adjustment function (F3)
    When you create a new channel plan (section 4.4.2.4) set the following values of the channel
parameters.
    For analogue channels set the frequency to the video carrier value. The noise measurement
frequency should be set 500 kHz lower than that of the audio carrier.
    For digital channels set the frequency to the central frequency of the current channel band. The
noise measurement frequency is +4250 kHz, the frequency band width should be set in accordance
with the TV system being used. If measurement parameter setting function (section 4.3.10) allows
to scan DVB-C digital channels, then for such channels modulation type and symbol rate should be
set. If you do not set these parameters, they will be defined during automatic tuning to the particular
digital channel.
                                                  25
    To fine tune a parameter, select it by « », « » keys, and then scroll to the required values by
«◄», «►» keys, or enter them using the keypad.
    For accurate automatic setting of the frequency point, set the channel number and its status
(analogue or digital). Press «F3» (Setting). The signal will be given to the input of the Analyzer,
which will analyze it and set the optimal channel parameters. To save the channel point press «F2»
(Save). To abort from the function without saving changes press «F1» (Exit). If the reception
quality is poor, when e.g. variation of the digital channel is higher than 3 dB, the automatic tuning
can be incorrect. In any case, check all the parameters after the channel plan has been set. It is more
convenient to determine the parameters in the spectrum measurement mode by means of a PC. In
case of incorrect (or non-optimal) settings, fine tune the parameter manually. Otherwise it can lead
to errors in channel parameters measurements or in operations with Data Loggers.
    To edit the frequency point name scroll the marker to the Name position and press «►» «►»
key. The text edit screen is represented in figure 4.15. The mode name will be indicated in the top
line (index 1). The next line is the description of the edited text. The framed line (index 2) is the
edited text. The bottom line (index 3) shows the characters that you can enter:
    a) «F1» – upper-case letters;
    b) «F2» – lower-case letters;
    c) «F3» – numbers;
    d) «F4» – symbols.




                                             Figure 4. 15

    To start editing scroll the cursor to the required point by «◄» and «►» keys, select the required
characters by the functional keys and press the alphanumeric key until the desired character of the
key group appears on the screen. The character will appear at once or after a short pause. The «C»
key has a 'backspace' function, the «1» (in letter entering mode) is the 'space'. To enter a symbol
open the table of symbols by «F4» key and press any numeric key until the required symbol arrears
in cursor position. Press «MENU/ENTER» to exit the text editing tool.
    After you have finished to edit the text, you can save the changes made to the frequency point
by pressing «F2» (Save), or abort the mode without saving changes pressing «F1» (Exit). If the
frequency of a frequency point was changed, the point may appear in the channel plan ranged by
frequency in a different position (with different number).
    To exit the channel plan edit mode and save the changes press «F2». If you press
«MENU/ENTER» you will exit the mode after confirmation of saving the changes, if any.
    To delete the selected frequency point press «F3» key. To create a new frequency point press
«F4». The new point will appear in the list. You can edit this point as required.
    When you edit a frequency point do not let more than one frequency point be in one TV channel
band. Otherwise, in the channel SCAN mode appears uncertainty. Only one frequency value (the
lower one) will be displayed in the channel column in this mode.
    If you selected an empty channel plan, when you open edit mode the channel with only one
frequency point will appear on the screen, which you can edit and save into the memory. You
should consider that when you save changes to a channel plan, the channel data logger page with
the corresponding channel number becomes deleted. Before saving your Analyzer will check the
memory resources. If the memory is not enough to perform saving «Not enough memory»

                                                  26
message will appear. To save the required data you will need to delete some of the unnecessary
pages.


            4.4.2.2 Channel Plan Name Editing
    To edit a channel plan name, select the required plan and press «F2». In the text edit mode
described in section 4.4.2.1 perform the required changes to the name of up to 16 characters in
length and press «MENU/ENTER».


            4.4.2.3 Channel Plan Deleting
    To delete a channel plan, select the required one and press «F3». The confirmation request
screen will appear (figure 4.16). To confirm deleting of the plan press «F4». To abort deleting press
«F1».




                                          Figure 4. 16
   You should consider that when you save changes to a channel plan, the channel data logger
page with the corresponding channel number becomes deleted.


            4.4.2.4 Channel Plan Creating
    To create a new channel plan in auto mode, first set the threshold of channel detection (section
4.3.10): Threshold parameter. Select the channel plan number and press «F4». The IT-087 will
search for channels and define their type (analogue or digital). If scanning of digital channels is set
by the measurement parameter setting function (section 4.3.10), the Analyzer will define the
modulation type and symbol rate.
    After the Analyzer has completed scanning all the TV channels, it will turn to channel plan edit
mode (section 4.4.2.1). Edit channel plan and channel name, and save into the memory.


            4.4.3 Channel Data Logger

            4.4.3.1 General Information
    The Channel Data Logger (CDL) is intended for TV channel parameter measurement in
accordance with one of the channel plans, for checking the cable network parameters against the
template data, and saving of the check results into the memory with time and date thereof. CDL
allows to view the measurement results and errors in different parameters, correct each parameter of
the template separately, upload the data onto your PC for further processing and report preparation.


            4.4.3.2 List of Channel Data Logger Pages

         icon in the main menu refers to СDL mode. This mode allows to perform with the СDL
pages such operations as viewing, deleting and creating of a new page. See figures 4.17 and 4.18:
                                                  27
                   Figure 4. 17                                        Figure 4.18
    The screen shows the CDL pages. On the first screen the top row of the table (index 1) divides
the table into columns. The first column (index 2) shows the page numbers form 1 to 112. The
second column (index 3) is the channel plan number. The third column (index 4) is the
measurement date. The fourth column (index 7) is the time of measurement. The fifth column
(index 6) is the result of the check against the template. The second screen (figure 4.18) displays the
comments for all the pages. The bottom line (index 5) contains the list of commands that can be
accessed by the functional keys. Pressing «◄» and «►» arrows you can switch between the views
of the screen. Pressing « », « » keys, or entering numbers from the keypad select the required
page.
    List of available commands:
    a) viewing of the CDL page (Read). Select by «F1» key. Allows to view the selected page;
    b) deleting of the CDL page (Delete). Select by «F2» key. Allows to delete the selected page
form the memory.
    c) creating of a new CDL page (New). Select by «F3» key. Allows to create new CDL pages.


             4.4.3.3 Channel Data Logger Page Viewing
    To recall and view a CDL page, select the required one from the list and press «F1». Scanning
data table will appear on the screen (figure 4.19 or 4.20). Two views of the table are available, for
basic and digital parameters. You can switch the screen between these views by means of «◄» and
«►» arrows. The top line of the table divides the table into columns. The first column is the number
of the frequency point (number of channel) from 1 to 112 (according to the number of points in the
corresponding channel plan). The second column is the name of the channel of the measured
channel plan.
    The following values are displayed in the last column of the basic parameters table: video
carrier level, V/A carriers ratio (for digital channels with Dg description), and C/N ratio.
    MER and BER values are displayed in the digital parameters table. Analogue channels are
described as Analogue. If during digital channel measurement no QAM decoder synchronization
was achieved, No lock description will appear in the line.
    The bottom line contains the commands that you can access by the functional keys.
    List of the available commands:
    a) scanning of the CDL page (Scan). Select by «F1» key. Allows to re-scan the available pages.
    b) saving of the CDL page (Save). Select by «F2». Allows to save the measurement results.
    c) viewing and editing of the template data (Error). Select by «F3». Allows to select a
parameter of the template used for CDL checking, and edit its value.
    d) viewing of the CDL page in bar-graph mode.
    To start scanning of a page select «F1» key. After the scanning has been completed, new values
will appear in the measured data field of the screen. If the frequency (or frequency point, depending
on the screen view selected) values are highlighted in inverse colour, this indicates that the errors
have been detected during the check against the template.




                                                  28
                Figure 4. 19                                        Figure 4.20

    To identify the errors, open the table of the templates («F3» key). The template parameter table
will appear on the screen (figure 4.21).




                                            Figure 4. 21

    In this table you can see the parameters for the measured data to be verified with. Each
parameter is editable. You can set less strict parameters if it is allowed for the cable network under
test. The table contains ten parameters:
    Level Vid min. The parameter defines the minimum possible value of video carrier level. Can
be adjusted within 45…95 dBμV. The default value is 60 dBμV.
    Level Vid max. The parameter defines the maximum possible value of video carrier level. Can
be adjusted within 45…95 dBμV. The default value is 80 dBμV.
    Vid/Audio min. The parameter defines the minimum possible value of V/A ratio. Can be
adjusted within 5…25 dB. The default value is 10 dB.
    Vid/Audio max. The parameter defines the maximum possible value of V/A ratio. Can be
adjusted within 5…25 dB. The default value is 20 dB.
    Vid/Noise min. The parameter defines the minimum possible value of V/N ratio. Can be
adjusted within 15…55 dB. The default value is 43 dB.
    dL(40-900MHz). The parameter defines the maximum possible value of difference between
any channel levels within 40 to 1000 MHz range. Can be adjusted within 10…20 dB. The default
value is 15 dB.
    dL(40-600MHz). The parameter defines the maximum possible value of difference between
any channel levels within 40 to 600MHz range. Can be adjusted within 7…17 dB. The default value
is 12 dB.
    dL(40-300MHz). The parameter defines the maximum possible value of difference between
any channel levels within 40 to 300MHz range. Can be adjusted within 5…15 dB. The default value
is 10 dB.
    dL(dF=100MHz).The parameter defines the maximum possible value of difference between
any channel levels in any 100MHz range. Can be adjusted within 5…12 dB. The default value is 7
dB.
    dL(next Ch). The parameter defines the maximum possible value of difference between
adjacent channel levels. Can be adjusted within 2…6 dB. The default value is 3 dB.
    Level Dig max. The parameter defines the maximum possible value of signal level of digital
channels. Can be adjusted within 70…75 dBμV. The default value is 70 dBμV.
    Lev/Noise min. The parameter defines the minimum possible value of C/N ratio for digital
channels. Can be adjusted within 26…31 dB. The default value is 31 dB.
                                                 29
    To check the CDL page against only one of the parameters, select this parameter by « » and
« » keys and press «MENU/ENTER» to return to the table of CDL pages. The frequency point,
which failed the check against this parameter will be indicated on the black background. To check
the page against some other parameter, you will need to return to the template data table and select
the required parameter.
    To edit the template parameter value, select the required parameter and change its value by «◄»
and «►» keys.
    The table of the basic parameters can be viewed in the bar-graph mode SCAN (section 4.3.4).
Press «F4». The bar-graph screen containing the table data will open. Control the cursor and
parameters as described for SCAN measurement mode.
    To save the results of the scanning and checking of the CDL page, select Save by pressing
«F2». The following data will be saved into the memory: scan results, check against the template
results, time and date of the page saving. Before saving your Analyzer will check the memory
resources. If the memory is not enough to perform saving «Not enough memory» message will
appear. To save the required data you will need to delete some of the unnecessary pages.


            4.4.3.4 Channel Data Logger Page Deleting
    To delete a CDL page, select he required page and press «F2». The confirmation request screen
will appear (figure 4.16). To confirm deleting of the plan press «F4». To abort deleting press «F1».


            4.4.3.5 Channel Data Logger Page Creating
    To create a new CDL page, select the required page and press «F3». Channel plan selection
screen will open (figure 4.22). The bottom line shows the channel plan name.




                                            Figure 4. 22

    Pressing « » and « » keys select the channel plan to be scanned. Press «MENU/ENTER».
Text edit screen will open. Enter your comment to the CDL page up to 16 characters in length.
Instructions for text entering and editing are described in section 4.4.2.1. After the comment is
completed press «MENU/ENTER». The screen will display the scanning data table with zero
values (figure 4.19 or 4.20). Then you can perform all the operations described in section 4.4.3.3:
scanning, checking against the template, template editing, saving the page into the memory.


           4.4.4 Spectrum Data Logging

            4.4.4.1 General Information
   Spectrum data logger (SDL) is intended for scanning of a frequency band and recording the
measurement results with date and time thereof. SDL allows to view the measurement results and to
upload the data to your PC for further processing and report preparation.


                                                30
           4.4.4.2 List of Spectrum Data Logger Pages
           icon in the main menu refers to SDL mode. This mode allows to perform with the SDL
pages such operations as viewing, deleting and creating of a new page. See figures 4.23, 4.24, 4.25.
    The screens show the SDL pages. The top line of the table (index 1) divides the table into
columns. The first screen (figure 4.23) displays the scanning limits. First column (index 2) shows
the page numbers form 1 to 100. The second column (index 3) is the beginning frequency. The third
column (index 5) is the ending frequency.
    The second screen (figure 4.24) displays the comments for all the pages (up to 16 characters in
length).
    The third screen (figure 4.25) displays the date and time when the page was saved into the
memory of the Analyzer. The bottom line (index 4) contains the list of commands that can be
accessed by the functional keys. Pressing «◄» and «►» arrows you can switch between the views
of the screen. « » and « » keys select the required page.
    List of available commands:
    a) viewing of the SDL page (Read). Select by «F1» key. Allows to view the selected page;
    b) deleting of the SDL page (Delete). Select by «F2» key. Allows to delete the selected page
form the memory.
    c) creating of a new SDL page (New). Select by «F3» key. Allows to create new SDL pages;
    d) scanning of the SDL page (Scan). Select by «F4» key. Allows to re-scan the available pages.




                Figure 4.23                                        Figure 4.24




                                            Figure 4.25


            4.4.4.3 Spectrum Data Logger Page Viewing
    To recall and view a SDL page, select the required one from the list and press «F1». Display
settings should be made the same as in spectrum measurement mode (section 4.3.3). The values that
are outside of the scan range are shown as zeroes.


            4.4.4.4 Spectrum Data Logger Page Deleting
   To delete a SDL page from the memory, select the required page and press «F2» key. A
confirmation dialogue box will appear on the screen (figure 4.16). To confirm the deleting of the
page, press «F4» key. To cancel the deleting, press «F1» key.




                                                31
             4.4.4.5 Spectrum Data Logger Page Creating
    To create a new SDL page select a page and press «F3» key. Scan limit selection screen will
appear (figure 4.26). Limits can be set by frequency (press «F1») or by channels (press «F2»). You
can either select the limits by « » and « » keys, or enter the required values by alphanumeric
keyset. The edited value will be indicated in flashing characters. To set the attenuation of the built-
in attenuator (in the second line on the screen) use «F3» and «F4» keys. If you select the values 0,
20 or 40 dB, the scanning will be performed with this set input attenuation. If you select auto, your
Analyzer prior to scanning will measure signal level in the channels within the scan range, and will
determine the optimal value of the attenuation. If you re-scanning the page, the attenuation will take
on the last value.
    After you have set all the parameters press «MENU/ENTER» key. Comment entering screen
will open. Enter comments to the SDL page up to 16 characters long. Instructions for entering and
editing of the text read in section 4.4.2.1. After you have finished press «MENU/ENTER». The
progress indicator of the spectrum scanning will appear. When the scanning has been completed
your IT-087 will save the page (with the time and date), and turn to viewing mode of the recorded
page. You can access the table of SDL pages by pressing «MENU/ENTER». The scanning process
can be interrupted by «MENU/ENTER» key. In this case the current page will be deleted.




                                             Figure 4. 26


            4.4.4.6 Spectrum Data Logger Page Scanning
    To re-scan a SDL page, select the required page and press «F4» key. The progress indicator of
the spectrum scanning will appear on the screen. After the scanning has been completed your IT-
087 will save the page, and turn to viewing mode of the recorded page. You can access the table of
SDL pages by pressing «MENU/ENTER». If you select re-scanning for an empty page, the
preparation procedure will be the same as described in section 4.4.4.5.


            4.4.5 Memory Manager

            4.4.5.1 General Information
    The IT-087 is equipped with Data Logger with independent power supply and nonvolatile
NVRAM for storage of various data of the Analyzer. The Data Logger is powered either from the
main batteries or, if main batteries are absent, from a standby built-in battery.
    The Analyzer contains several memory sections. These are table of channel plans, channel log
and spectrum log. Other configurations of the IT-08 might have other sections located in the
memory.
    Every page of the log stored into the memory is a file, reference to which can be found in the
file location table. Each file consists of smallest storage cells called clusters. Memory manager
program is intended for detecting and eliminating of the errors, and for NVRAM maintenance. The
memory maganer allows to to view the clusters distribution within the NVRAM, check the memory
resources (determine the amount of the memory available), perform the file structure testing, as well
as format the memory (erasing all files and markers).

                                                  32
CAUTION! Perform operations with memory manager with caution. Incorrect actions may lead to
partial or total data loss.


           4.4.5.2 Operating the Memory Manager

          icon in the main menu corresponds to memory manager mode. See figure 4.27:




                                             Figure 4.27

    The screen displays the memory cluster table. The upper row of the table divides the table into
columns. The first column contains the cluster group numbers from 1 to 62. Further in the same row
the location and cluster status within the groups of 16 clusters are shown. The bottom row contains
the list of commands that can be selected using the functional keys. Using « » and « » arrows you
can select a cluster group.
    List of available commands:
    a) Testing the file structure and checking the clusters (Check). Select by «F1». Allows to test
the file structure of the memory.
    b) Determining the memory resources (Available). Select by «F2». Allows to determine the
memory occupied/available.
    c) Viewing the structure tables and files of all types (Table). Select by «F3». Allows to view the
memory structure table and file tables of each structure.
    d) Erasing the memory (Delete). Select by «F4». Allows to delete all files, as well as format and
test the memory.
    In the talbe the cluster status is marked as follows:
    a) о – the cluster is free;
    b) x – the cluster is occupied;
    c) B – the cluster is damaged (checksum error).


             4.4.5.3 Testing the File Structure
    Press «F1» to start the memory test. When the test is completed, the results will be displayed on
the screen.
    If no errors have been detected, the following message will appear (see figure 4.28):




                                             Figure 4.28



                                                 33
    There are three methods of testing. Method 1 – checking of the files location table. In case an
error is identified, the corresponding file will be deleted. The top information line will indicate the
number of the files deleted. Method 2 – searching for the damaged clusters, which do not belong to
any file. Such clusters will be erased, and their number will be indicated in the second line. Method
3 – searching for the damaged files with incomplete length or files that “cross” other files, i.e.
contain clusters common with other files. The number of damaged files is indicated in the third line.
When the damaged files are detected, it is necessary to manually determine the names of the files
and delete them in the Table mode (section 4.4.5.5).


            4.4.5.4 Determining the Memory Resources
    Press «F2» to activate the program. When the process is completed, the message containing
information about the amount of memory available (in percents of the total amount) will be
displayed (see figure 4.29).




                                             Figure 4.29

           4.4.5.5 Viewing the Structure Table and Files of all Types
   Press «F3» to activate the program. The memory structures table will appear. See figure 4.30:




                                             Figure 4.30

   The column (MemType) displays the names of the memory structures:
   a) Ch plan: channel plans (IT-081 Meter or IT-087 Analyzer);
   b) Nb notes: channel logs (IT-081 Meter or IT-087 Analyzer);
   c) Nb Spec: spectrum logs (IT-081 Meter IT-087 Analyzer);
   d) CbType: cable type table (IT-084 Meter);
   e) Nb Refl: reflectogram logs (IT-084 Meter);
   f) OptNotes: Optical Meter logs (IT-086 Meter);
   g) LNBprof: LNB profile logs (IT-082 Meter);
   h) Sat.param: satellite parameter table (IT-082 Meter);
   i) Sat.notes: reception quality parameter logs (IT-082 Meter);
   j) Spec.notes2: spectrum logs (IT-082 Meter);
   k) F.dg.pl.: channel plans with digital parameters (IT-087 Analyzer)
   l) Dg.ch.notes: channel loges for digital parameters (IT-087 Analyzer)
   m) Unknown.: unknown type of memory structure.

                                                  34
    The second column (Fls) displays the number of files corresponding to a given structure type in
the memory.
    The third column (Cls) displays the number of occupied clusters of a given structure type.
    The fourth column (Err) – number of damaged files.
    To determine the names of the damaged files, select the required structure type using « » and
« » arrows and press «F2» (View command). The table containing the names of the files of the
corresponding type will be displayed (figure 4.31).




                                              Figure 4.31

    The first column displays the file number, the second column displays its name, and the third
column displays the file status. If the file is not damaged, it is marked with “+” symbol; if the file is
damaged, it is marked with “-“ sign. The damaged files must be deleted. Select the required file by
« » and « » arrows, and press «F2» to delete it (Delete command). To quit the mode, press «F1».
    If the structure type of the memory cannot be identified by the program version that your
Analyzer has installed, then viewing the files cannot be accessed. In this case the software must be
updated with the updates available from our website. If any damaged files of unknown types are
identified, it is recommended to erase memory completely (section 4.4.5.6), saving the required
files onto your computer proir to that. It is not recommended to delete the files that are used in other
types of meters. When errors are detected in such files, it is necessary to upload the software that
corresponds to the given file type, save the files on your computer and delete the damaged files after
this. If errors start appearing in other files, the complete erasing of memory is necessary.


           4.4.5.6 Erasing the Memory
    Press «F4» to activate the program. After a double confirmation request, the erasing and
formatting of the memory will be fulfilled. After the process has completed, a message requesting
memory test will appear. After confirmation the memory chip will be tested. The test is make in
three sweeps. If the test result is positive, a norm message will be displayed. If any defect is
discovered, an error message will be displayed. In this case the IT-087 should be sent back to
manufacturer or to a repair service.


4.5 Self-test Mode

          4.5.1 General Information
   To check the performance of the components of IT-087 and functioning conditions, self-test
mode can be used.         icon corresponds to this mode. See figure 4.32:




                                                   35
                                       Figure 4. 32

   The table displys the following parameters to be checked:
   a) Temperature. Temperature inside of the Removable Module;
   b) Voltage akk. Voltage of the battery;
   c) Volume akk. The remaining capacity of the battery;
   d) Voltage bat. Voltage of the standby battery;
   e) Program mem. Condition of the programs memory;
   f) Devices MB. Condition of the Base Unit;
   g) Devices MC. Condition of the Removable Module;
   h) Files mem. Condition of the Data Logger NVRAM.


            4.5.2 Removable Module Temperature
    The parameter is intended for checking the temperature inside the Removable Module.
Temperature is the main environmental factor, which influences the accuracy of measurements. To
check the accuracy of measurements of the signal level, use the temperature parameter. If the
temperature value is within the allowed range of – 10 to 50 ºС, then norm status will be displayed
at the end of the value line. If the temperature is not within this allowed range, then norm status
will not be displayed. If instead of temperature --- value is displayed, this indicates either the
absence of the Removable Module or temperature measuring device defect.


             4.5.3 Battery Condition
      The voltage and remaining capacity parameters are intended for checking of the battery
condition. Check the battery condition when operating in off-line mode (power supply switched
off). If the measured battery voltage is greater than 6.6 V, then norm status is indicated. If the
volage is less than 6.6 V, then low status is indicated. The voltage will then be recalculated into the
remaining battery capacity value in percent, which will help you to estimate the time remaining of
the Analyzer operation. You should consider that with decrease of air temperature the battery
capacity also decreases. This should be taken into account when estimating the operating time of the
Analyzer.


             4.5.4 Standby Battery Voltage
     Standby battery voltage parameter is intended for checking of the built-in battery. The standby
lithium battery has a rated value of 3 V. If the measured battery voltage is greater than 2.5 V, then
norm status is indicated. If the voltage is less than 2.5 V, then low status is indicated. The battery
function is supply of power to system clock, memory (for saving the current Analyzer settings), and
NVRAM of the Data Logger for the case when the accumulator battery is absent. If low status is
indicated, the IT-087 must be sent to repair service to have its battery replaced.




                                                  36
            4.5.5 Program Memory Check
    This program checks the program memory of IT-087. If the test does not detect any error, the
norm status is displayed. If an error has been detected, an error status is displayed, in this case the
software must be reinstalled, as described in section 4.10.


            4.5.6 Base Unit Check
    This program checks the condition of the Base Unit components. If the test does not detect any
error, the norm status is displayed. If an error has been detected, an error status is displayed, in this
case the Analyzer must be sent to repair service to have the defects corrected.


            4.5.7 Removable Module Check
   This program checks the condition of the Removable Module components. If the test does not
detect any error, the norm status is displayed. If an error has been detected, an error status is
displayed, in this case the Analyzer must be sent to repair service to have the defects corrected.


            4.5.8 Data Logger NVRAM Check
    This program checks the condition of the Data Logger nonvolatile memory, NVRAM. If the test
does not detect any error, the norm status is displayed. If an error has been detected, an error status
is displayed, in this case correct this error by means of the memory manager test, as described in
4.4.5 section. If a memory error occurred the program may “freeze” or reboot during the testing
process. In this case it is necessary to erase the memory completely. If an error cannot be
eliminated, the Analyzer must be sent to repair service to have the defects corrected.



4.6 Operational Parameters Setting

          4.6.1 General Information
   The operating parameters setting program is intended for modifying of the general parameters
of the Analyzer operation.        icon in the main menu corresponds to the this program. See figure
4.33:




                                        Figure 4. 33

   The following parameters are available to be edited:
   a) Backlight. Controlling the LCD backlight;
   b) Contrast. Setting the LCD contrast;
   c) Sound volume. Regulating the volume of the audio;
   d) Sound check. Audio checking function switch;
   e) Language. Selecting a language.
   f) Adjust clock. Setting the reference clock frequency;
   g) Date. Setting the date of the reference clock;
                                                  37
   h) Time. Setting the reference clock time;
   i) Click. Selecting the key pressing sound.
   You can select the parameters using « » and « » arrows.


            4.6.2 LCD Backlight Setting
    There are two possible values for the parameter: on – the backlight is turned on, and off – the
backlight is turned off. You can select the parameter using «◄» and «►» keys. When operating in
on mode, the backlight is constantly turned on and is not controlled from the keypad. When
operating in off mode, the backlight can be turned off/on using «        » key. Pressing the left part of
the key switches the backlight on, and the right part switches it off respectively. When the Analyzer
is switched on, initially the backlight is off. You should consider that operation with the backlight
in on mode decreases the time of continuous operation.


            4.6.3 LCD Contrast Setting
   The screen contrast can change with time or with the change in the environmental temperature.
To tune the contrast, select the corresponding parameter and tune the value using «◄» and «►»
keys. The possible range is from 0 to 100% with 10% steps. The set parameter value is saved and
will be valid after you turn the Analyzer on again.


             4.6.4 Audio Indication Volume Setting
    To change the volume of audio, select the required parameter and adjust its value using «◄»
and «►» arrows. The possible range is from 0 to 100%. The set parameter value is saved and will
be valid after you turn the Analyzer on again.


             4.6.5 Audio Indication Switch
    There are two values of the parameter available: on — signal level measurement «by sound»,
and off — sound is switched off. You can change the parameter by «◄» и «►» keys. This function
is available in measurement mode for frequency point (section 4.3.2).


           4.6.6 Language Selection
   There are tree options for the parameter available: english, russian, or deutsch, all the
messages are displayed in the corresponding languages. All the values of the physical quantities are
always displayed in English in all the measurement modes.


           4.6.7 Reference Clock Frequency Setting
    The parameter is intended for fine tuning of the reference clock operation. To tune the
frequency, select the corresponding parameter by «◄» and «►» keys. The possible value range is
from -31 to + 31%. If the reference clock is «fast», decrease the value, and if the clock is «slow»,
increase this value. The parameter value tuning range corresponds to clock rate from -2.75
min/month to + 5.5 min/month.




                                                   38
            4.6.8 Reference Clock Date Setting
    The parameter is intended for setting or tuning of the reference clocks date. To set the date,
select the corresponding parameter using «►». Set the current date by « » and « » keys. To set
the month, press «►». Set the value by « » and « ». To set the year, press «►». Set the value by
« » and « ». Press «◄» key three times to return to the parameter table. The parameter that is
being corrected is indicated by flashing characters.


            4.6.9 Reference Clock Time Setting
      The parameter is intended for setting or tuning of the reference clocks time. To set the time in
hours, select the corresponding parameter using «►». Set the required hours value by « » and « »
keys. To set the time in minutes, press «►» again. Set the required value by « » and « ». To set
the time value in seconds, press «►». Pressing « » or « » keys you can set the zero value for
seconds. Press «◄» key three times to return to the parameters table. The parameter that is being
corrected is indicated by flashing characters.


           4.6.10 Key Pressing Sound Selection
   There are 4 options for the sound: off/type1/type2/type3. Set using «◄» or «►».


4.7 Identification Data Readout
    Identification data readout program is intended for determining the serial numbers of the
modules of the Analyzer, their modifications and software versions.    icon corresponds to the
this mode. See figure 4.34:




                                       Figure 4. 34

    The top part of the screen displays the identification information about the BM-08 Base Unit:
    - Modification: number of the hardware version;
    - Serial Number: Base Unit serial number;
    - Soft ver: installed software version number.
    The bottom part of the screen displays the identification information about the Removable
Module:
    - Module MC: removable module type;
    - Modification: hardware version modification;
    - Serial number: Removable Module serial number.
    If the Removable Module is broken or switched off, this information is unavailable and will be
displayed as question marks or dash lines.


4.8 Audio Indication Check
    To check the audio indication function switch your Analyzer to sound check in operational
parameters setting mode (section 4.5.6) and set the required volume (section 4.6.4). You can check
the audio indication when operating in measurement mode for frequency point (section 4.3.2). If
                                                 39
audio indication check mode is on Sound check message will appear in the line of TV signal
parameters (index 4.7, Fig. 4.4). Operation in this mode is described in section 4.3.2. But with
sound check, audio carrier frequency is set with tuning to channels, while Video/Audio and
Signal/Noise parameters are not measured. Sound check cannot be activated in other measurement
modes. Audio indication attribute is saved after power off and will restore after you turn your
Analyzer on.
    When sound check mode is active and attenuator auto selection is on (section 4.3.10) the
attenuation value will be determined only once at measurement mode start. If in the process of
measurements the signal level changes, this can lead to incorrect measurement.
    You should take into consideration that operation in sound check mode will increase the
consumption current of your Meter, what will reduce the time of operation by the batteries.


4.9 Operation Controlled by PC

            4.9.1 General Information
   You can control operation of your IT-087 via PC. For connection to PC use Serial Port
connector on the right panel of your Meter. In the IT-087 package there come included cable for
connection to PC and a CD with the software, which allows the following:
   a) measurement of video carrier level, carrier to noise (C/N) ratio, video to audio (V/A) ratio
within TV signal spectrum for channels according to the channel plan;
   b) measurement of DVB-C signal reception quality parameters;
   c) measurement of spectrum within an arbitrary frequency band (from 5 to 900 MHz);
   d) viewing and saving of data logger pages;
   e) editing of channel plans;
   f) editing of channel allocation system;
   g) saving and documenting of measurement results.


             4.9.2 PC Configuration Requirements
    Minimal system requirements for your PC:
    a) Intel Pentium processor (100 MHz or greater);
    b) Microsoft Windows XP, Microsoft Windows 2000, Microsoft Windows NT 4.0 (SP6 or
greater), or Microsoft Windows ME/98/95 operating system;
    c) RAM requirement depends on the operating system of your PC: 64 MB for Windows
XP/2000, 32 MB for Windows Me/98/NT 4.0, 16 MB for Windows 95). For multi-processor
system you will need 16 MB additionally for every extra processor;
    d) 5 MB of hard drive free space (10 MB while installation);
    e) COM-port, operating at 19200 baud rate.
    f) SVGA monitor and video card of 256 colours and resolution of 640x480 pixels;
    g) mouse.


             4.9.3 Software Installation
         The installation of the required software is executed by Setup.exe program, which performs
all the actions necessary for saving of the program to the computer hard drive.
     • Before installation, close all active applications. If you use Windows NT, 2000 or XP, you to
proceed with installation you should log in under administrator’s rights.
     • If you are using a CD for installation, place the CD into the disk drive. Press “Install ViewIt
1.5” when the disk menu appears. If you received the software in some different way, just run the
Setup.exe file.

                                                 40
    • After you have started the installation program the installation wizard window will appear.
Press Next to initialize installation.
    • Then select the folder where you want to save the Analyzer program files. By default, the files
are saved into "C:\Program Files\TV Level Meter\IT-08". To save the files into a different
folder, press “Select” button. Select the required path and press “OK”.
    • The following steps will be fulfilled automatically. If everything is correct the information
window indicating successful installation will appear on the screen. Press “Finish” to complete the
installation.
    After the installation has been completed, a new folder “ViewIt 1.5” containing a shortcut for
accessing the program will be created in the “Start” menu.


           4.9.4 Starting the Program
    Connect the Analyzer to PC using the cable supplied in the package. Switch the power of the
Analyzer on and select in the main menu the mode of operation controlled by PC.            icon
corresponds to this mode. «Waiting for command» message will be displayed in the top line of the
Analyzer screen. When operating with PC, current operational information about the commands
being performed is displayed on the screen.
    To start the program on your PC, select the following in Windows main menu «Start-
>Programs->ViewIt 1.5->ViewIt for IT-08»

    ATTENTION ! Before you start the program, make sure that your IT-087 is
    connected to the computer correctly, the power is switched on, and the Analyzer is
    in «Waiting for command» mode. During the first start of the program, it is
    necessary to set the COM-port connected to the Meter. In the main menu find File-
    >Preferences, select the required COM-port in the drop-down list and click «OK».
    ATTENTION ! If the selected port is not free (used by some other application),
    the communication with Analyzer will not be established.

4.10        Software Updating

             4.10.1 Software Updating via PC
     The IT-087 offers the capability to update its firmware without use of any additional equipment.
We go on with development of the Analyzer and keep on working out new software versions that
provide new features. These new software versions come available for free download on our
website www.planar.chel.ru in the section that describes IT-087. Each version of the software has
its unique identification number, e.g. 7.0.0.2. The software version is displayed in identification data
readout mode (see section 4.7).
     To update your software proceed as follows:
     a) connect your IT-087 to the serial port of the PC by means of a regulare cable;
     b) create on your PC a new folder, e.g. «ItUpdate». Copy «SoftLoader» installer-program into
this folder from our website (this program is also available on the CD supplied with the Meter). The
«SoftLoader» requires Windows98, Windows2000 or WindowsXP operation system. The
«SoftLoader» provides communication with the Analyzer and downloads the new software onto it;
     c) download the new software into the folder «ItUpdate» from our website (file name contains
the number of program version with .bsk extension , e.g. 7_0_0_2.bsk) and a file describing
changes to the software (file name contains number of the program version with .doc extension );

                                                  41
    d) start «SoftLoader» on your PC. Select serial port of PC, which connects it to your IT-087,
by left-clicking (index 1) in the program window, as shown in Fig. 4.34;
    e) in the next field select the file with new version of IT-087 program by left-clicking (index 2),
a standard Windows file location drop-down menu will appear, find the required file and click
«ОК»;
    f) click «Start» and follow the instructions of the program. First, a warning notice will appear
advising you to power off your IT-087 and check the connection of the cable to the PC serial port.
Then another information window will appear; follow its instructions;




                                              Figure 4.34

    IF your IT-087 functions properly, RS232-port cable connected correctly, you have selected the
appropriate COM port, and the software to be downloaded is compatible with the instrument, the
process of program download onto your Analyzer will automatically start. After the download is
over the pop-up window will announce that the task has been successfully completed. The IT-087
will reboot and start operating similar to when it has been powered up.

   CAUTION! Do not interrupt the loading process. This can lead to malfunction of
   the Meter. But, if this does occur, repeat the process of program update.



            4.10.2 Software Updating by means of MC-087 Removable Module
       The IT-087 features function of saving the instrument software into the storage element of the
MC-087 Removable Module. The software update starts automatically after power on in case the
installed software is not compatible with this Removable Module or if the software on the Base
Unit is of an earlier version. If the Base Unit has been operating with a Removable Module other
than MC-087, then after installation of the MC-087 and switching the power on, IT-087 software
will automatically begin to download. The Analyzer will indicate the loading of the software by
flashing screen backlight. After the software has been loaded, the Analyzer switches to the normal
operating mode. If the mode of updating from the PC (see section 4.10.1) was operating prior to
switching the power of the instrument on, then the software will continue loading from the PC.

                                                  42
   Removable Module Software Memory Manager performs saving of the current software onto
the Removable Module and later tests its accuracy.     icon in the main menu corresponds to this
function. The function menu can be seen in Figure 435:




                                              Figure 4. 35

    Upon selection of Memory Manager function, the Analyzer will be checking the software
condition for approximately 15 seconds.
    Pressing of any button during this time will lead to abortion from the testing process. After the
test has been completed, the software identification data will be displayed on the screen:
    а) Memory: Removable Module type. If no Removable Module is used, «no» will be displayed.
    b) Program: software test results. If the test result is positive, «normal» will be displayed. If an
error has been detected, «error» message will be displayed. If no software has been detected, «no»
will be displayed.
    c) Date: the date when the software was saved;
    d) Version: software version.
    To save the current software into Removable Module memory, press «F1» key (Save
command). The software will download into the Removable Module memory from the Base Unit.
The process will be shown on the screen as a progress indicator. It is recommended to save the
program into the MC-087 memory after you have updated the software from PC. After the software
has been saved, it is automatically tested for accuracy.
    If you try to save the version of software which is older than the current one or if it is not
compatible with the Removable Module, the warning message will appear prior to saving. You can
choose to abort or continue the process.


4.11        Calculator Mode

   To switch your Analyzer to this mode select                  icon. This function is intended for
mathematical calculation. You can perform four operations over seven-digit numbers: addition,
subtraction, multiplication, division. The view of the screen is represented in Figure 4.36.




                                              Figure 4. 36

    Enter the first operand, then press the functional key («F1»-«F4») corresponding to the required
operation. Then enter the second operand and press «ENTER». The screen will display the
calculation result. You can go on with calculation using this result, or delete the current value by

                                                  43
pressing «C» key. If the result exceeds the maximum digit capacity, in the top line of the screen you
will see: error. To abort from this function press «ENTER».

4.12         Battery Operation
    The IT-087 is powered by a built-in power source with 6 NiMH AA batteries of 14,5x49,5 mm
dimensions and no less than 2100 mAh capacity. Also it is allowed to use alkaline AA batteries
(model LR6).
    In order to determine the residual capacity of the batteries, use the self-test program for the
Analyzer (see section 4.5.3). When the effective charge level of the battery drops to a critical point
you will hear the warning beep. This signifies that the time of operation until total battery discharge
is approximately 5 minutes.
    Various conditions, such as low ambient temperature, sound check configuration, and operation
with display backlight on can decrease the IT-087 continuous running time by a fully charged set of
batteries.
    In order to charge the batteries in an appropriate charger, remove IT-087 from its Carrying Case.
Check the position of the power switch. It must be in “Off” position. Open the cover of the battery
compartment. Carefully remove the batteries. The batteries must be charged in a charger, which is
appropriate to the type of the batteries you are using.
    When installing the batteries into the battery compartment, make sure that the polarity of
batteries is correct. Close the battery compartment.

                                         WARNING! Incorrect installation of the
                                         batteries may lead to damage to the
                                         Analyzer or to the batteries. If the alkaline
                                         batteries are used, is strictly prohibited to
                                         connect the IT-087 to the external DC
                                         power source, as the batteries of this type
                                         cannot be recharged.

    In order to charge the batteries without removing them from the Meter, connect the external DC
power source included in the set, and power it. The batteries will keep recharging even if the IT-087
is switched off. The backlight of “STD BY” button indicates that the power from the source is
being supplied. In this case the full recharge will take from 12 to 14 hours. It is highly
recommended to only recharge the batteries that are fully run-down. You should charge batteries
using the external power source once every 2 – 3 months in order to equalize the charge of batteries
and thus increase their useful life.
    The circuit design of battery charge provides the shut down of current in case the resultant
battery charge is less than 5 V. In case the batteries are completely run-down, it is possible for the
charge to fail to switch on. The voltage of the batteries can be checked using the IT-087 self-
checking program (section 4.5.3) when powered from external DC power source. The charge of the
batteries cannot be less than 5.5 V. In this case the batteries must be removed from the Analyzer in
order to be recharged separately or disposed.


5 MAINTENANCE


    Required maintenance is limited to observation of instructions related to proper operation,
storage, and shipment, which are supplied in this Manual and also minor defects correction.
    Perform preventive inspections covering check of controls, reliability of the assembly, and the
keypad condition after the warranty period has expired and annually since then.

                                                  44
6   TROUBLESHOOTING

    Defect detection: After the IT-087 is switched on, nothing is displayed on the screen and there
is no blinking backlight.
    Possible reason: Extremely low charge, malfunction, or lack of one or more of the batteries.
       Methods of correction: In order to check the IT-087 condition, connect the network power
supply unit. If the Analyzer switches on, then the battery voltage has to be tested by means of the
self-checking function (section 4.6.3). Low voltage (< 6 V) is an evidence that a battery (or a
number of batteries) is discharged. Voltage that is higher than normal (> 8V) indicates malfunction
or lack of one or more batteries. The batteries have to be charged in case they are low (section 4.11)
or exchanged if they are malfunctioning.
    Possible reason: Firmware failure.
    Methods of correction: Install the firmware from your computer (section 4.10.1). If the IT-087
starts working after this has been done, the firmware should to be saved in NVRAM of the
Removable Module without switching the power of the IT-087 off (section 4.10.2).
    Defect detection: When the IT-087 is switched on, the following message is displayed:
Removable Module not found.
    Possible reason: Firmware failure in Removable Module.
    Method of correction: Install the firmware applicable to the corresponding Removable Module
from the external computer (section 4.10.1). If the IT-087 starts functioning correctly after the
process has been completed, the firmware should be saved in NVRAM of the Removable Module
without switching the power of the IT-087 off (section 4.10.2).
    Defect detection: High error at level measurements.
    Possible reason: Incorrect setting of the input attenuation value.
    Method of correction: Check the attenuator setting (section 4.3.10). We recommend to set the
mode of automatic selection of input attenuation.
    Possible reason: Increased wear of the RF input adapter.
    Method of correction: Replace the input adapter by the proper one.
    Possible reason: Incorrect channel plan setting, which makes the IT-087 to tune to offset video
carrier point. This can be tested in spectrum analyzer mode.
    Method of correction: Readjust the channel plan (п. 4.4.2.1). Check if the TV standard is set
correctly (п. 4.3.10).
    Defect detection: The IT-087 “freezes” after it is switched on.
    Possible reason: Corruption of the file system of the Data Logger memory.
    Methods of correction: Switch the IT-087 power on, holding «ENTER» key until the main
menu appears. Select memory manager mode to erase and then test the memory. (section 4.5.4.6).


7 STORAGE

    Store your IT-087 under the following conditions: environment temperature from -20 to +40 0С,
relative humidity up to 90 % (at 30 0С).


8 TRANSPORTATION

    The IT-087 must be shipped in any closed vehicle at temperature from -20 to +40 0С, relative
humidity 90% (at 30 0С) and atmospheric pressure of 84 to 106.7 kPa (630 to 800 mm Hg).
    Cargo holds, railway cars, containers, and truck beds, utilized for shipment of the IT-087 should
be free from any traces of cement, coal, chemicals, etc. When shipped by air the products should be
kept in aircraft sealed compartments.

                                                 45
9   LABELING

      The serial numbers of Base Unit and Removable Module, which contain index number and
date-of-manufacture code, can be found on the bottom panel of the respective item and also can be
viewed on the display in identification data readout program (see section 4.7).



10 WARRANTY INFORMATION

            The manufacturer warrants the IT-087 Digital TV QAM Signal Analyzer to conform to
    the specifications of this Manual when used in accordance with the regulations of operation
    detailed in this Manual.
            The manufacturer will repair or replace without charge, at its option, any IT-087 Digital
    TV QAM Signal Analyzer found defective in manufacture within the warranty period, which is
    twenty four (24) months from the date of purchase. Should the user fail to submit the warranty
    card appropriately certified by the seller with its stamp and date of purchase the warranty period
    will be determined by the date of manufacture.

    The warranty is considered void if:
    а) the defect or damage is caused by improper storage, misuse, neglect, inadequate maintenance,
    or accident;
    b) the product is tampered with, modified or repaired by an unauthorized party;
    c) the product's seals are tampered with;
    d) the product has mechanical damage.

    The batteries are not included or covered by this warranty.
    Transport risks and costs to and from the manufacturer or the authorized service centers are
    sustained by the buyer.
           The manufacturer is not liable for direct or indirect damage of any kind to people or
    goods caused by the use of the product and/or suspension of use due to eventual repairs.
    When returning the faulty product please include the accurate details of this product and clear
    description of the fault. The manufacturer reserves the right to check the product in its
    laboratories to verify the foundation of the claim.

Warranty card
     No.…………………………………....................……
     Date of manufacture………………....................….…
     Date of purchase...…………………….......................




                                                 46
11 APPENDIX

      Frequency Table for D/K (OIRT) Standard Channels
     This East European standard is used in a number of countries   of East Europe, CIS and some
African countries.
   Table 11.1
  Ref.           Channel          F bottom         F top            F video          F audio
    1                1              48,5           56,5              49,75            56,25
    2                2                58             66              59,25            65,75
    3                3                76             84              77,25            83,75
    4                4                84             92              85,25            91,75
    5                5                92            100              93,25            98,75
    6              S1                110            118             111,25           117,75
    7              S2                118            126             119,25           125,75
    8              S3                126            134             127,25           133,75
    9              S4                134            142             135,25           141,75
   10              S5                142            150             143,25           149,75
   11              S6                150            158             151,25           157,75
   12              S7                158            166             159,25           165,75
   13              S8                166            174             167,25           173,75
   14                6               174            182             175,25           181,75
   15                7               182            190             183,25           189,75
   16                8               190            198             191,25           197,75
   17                9               198            206             199,25           205,75
   18               10               206            214             207,25           213,75
   19               11               214            222             215,25           221,75
   20               12               222            230             223,25           229,75
   21              S11               230            238             231,25           237,75
   22              S12               238            246             239,25           245,75
   23              S13               246            254             247,25           253,75
   24              S14               254            262             255,25           261,75
   25              S15               262            270             263,25           269,75
   26              S16               270            278             271,25           277,75
   27              S17               278            286             279,25           285,75
   28              S18               286            294             287,25           293,75
   29              S19               294            302             295,25           301,75
   30              S20               302            310             303,25           309,75
   31              S21               310            318             311,25           317,75
   32              S22               318            326             319,25           325,75
   33              S23               326            334             327,25           333,75
   34              S24               334            342             335,25           341,75
   35              S25               342            350             343,25           349,75
   36              S26               350            358             351,25           357,75
   37              S27               358            366             359,25           365,75
   38              S28               366            374             367,25           373,75
   39              S29               374            382             375,25           381,75




                                              47
 Table 11.1 (continued)

Ref.         Channel      F bottom        F top   F video   F audio
 40           S30            382           390    383,25    389,75
 41           S31            390           398    391,25    397,75
 42           S32            398           406    399,25    405,75
 43           S33            406           414    407,25    413,75
 44           S34            414           422    415,25    421,75
 45           S35            422           430    423,25    429,75
 46           S36            430           438    431,25    437,75
 47           S37            438           446    439,25    445,75
 48           S38            446           454    447,25    453,75
 49           S39            454           462    455,25    461,75
 50           S40            462           470    463,25    469,75
 51            21            470           478    471,25    476,75
 52            22            478           486    479,25    484,75
 53            23            486           494    487,25    492,75
 54            24            494           502    495,25    500,75
 55            25            502           510    503,25    508,75
 56            26            510           518    511,25    516,75
 57            27            518           526    519,25    524,75
 58            28            526           534    527,25    532,75
 59            29            534           542    535,25    540,75
 60            30            542           550    543,25    548,75
 61            31            550           558    551,25    556,75
 62            32            558           566    559,25    564,75
 63            33            566           574    567,25    572,75
 64            34            574           582    575,25    580,75
 65            35            582           590    583,25    588,75
 66            36            590           598    591,25    596,75
 67            37            598           606    599,25    604,75
 68            38            606           614    607,25    612,75
 69            39            614           622    615,25    620,75
 70            40            622           630    623,25    628,75
 71            41            630           638    631,25    636,75
 72            42            638           646    639,25    644,75
 73            43            646           654    647,25    652,75
 74            44            654           662    655,25    660,75
 75            45            662           670    663,25    668,75
 76            46            670           678    671,25    676,75
 77            47            678           686    679,25    684,75
 78            48            686           694    687,25    692,75
 79            49            694           702    695,25    700,75
 80            50            702           710    703,25    708,75
 81            51            710           718    711,25    716,75
 82            52            718           726    719,25    724,75
 83            53            726           734    727,25    732,75


                                     48
 Table 11.1 (continued)

Ref.         Channel      F bottom        F top   F video   F audio
 84            54            734           742    735,25    740,75
 85            55            742           750    743,25    748,75
 86            56            750           758    751,25    756,75
 87            57            758           766    759,25    764,75
 88            58            766           774    767,25    772,75
 89            59            774           782    775,25    780,75
 90            60            782           790    783,25    788,75
 91            61            790           798    791,25    796,75
 92            62            798           806    799,25    804,75
 93            63            806           814    807,25    812,75
 94            64            814           822    815,25    820,75
 95            65            822           830    823,25    828,75
 96            66            830           838    831,25    836,75
 97            67            838           846    839,25    844,75
 98            68            846           854    847,25    852,75
 99            69            854           862    855,25    860,75




                                     49
   Frequency Table for B/G (CCIR) Standard Channels
   This is a West European standard, which is used in most West European countries.

 Table 11.2
Ref.          Channel           F bottom          F top          F video          F audio
  1              2                  47              54            48,25            53,75
  2              3                  54              61            55,25            60,75
  3              4                  61              68            62,25            67,75
  4             S1                 104             111           105,25           110,75
  5             S2                 111             118           112,25           117,75
  6             S3                 118             125           119,25           124,75
  7             S4                 125             132           126,25           131,75
  8             S5                 132             139           133,25           138,75
  9             S6                 139             146           140,25           145,75
 10             S7                 146             153           147,25           152,75
 11             S8                 153             160           154,25           159,75
 12             S9                 160             167           161,25           166,75
 13            S10                 167             174           168,25           173,75
 14              5                 174             181           175,25           180,75
 15              6                 181             188           182,25           187,75
 16              7                 188             195           189,25           194,75
 17              8                 195             202           196,25           201,75
 18              9                 202             209           203,25           208,75
 19             10                 209             216           210,25           215,75
 20             11                 216             223           217,25           222,75
 21             12                 223             230           224,25           229,75
 22            S11                 230             237           231,25           236,75
 23            S12                 237             244           238,25           243,75
 24            S13                 244             251           245,25           250,75
 25            S14                 251             258           252,25           257,75
 26            S15                 258             265           259,25           264,75
 27            S16                 265             272           266,25           271,75
 28            S17                 272             279           273,25           278,75
 29            S18                 279             286           280,25           285,75
 30            S19                 286             293           287,25           292,75
 31            S20                 293             300           294,25           299,75
 32            S21                 302             310           303,25           308,75
 33            S22                 310             318           311,25           316,75
 34            S23                 318             326           319,25           324,75
 35            S24                 326             334           327,25           332,75
 36            S25                 334             342           335,25           340,75
 37            S26                 342             350           343,25           348,75
 38            S27                 350             358           351,25           356,75
 39            S28                 358             366           359,25           364,75
 40            S29                 366             374           367,25           372,75
 41            S30                 374             382           375,25           380,75



                                            50
Table 11.2 (continued)

42             S31       382        390   383,25   388,75
43             S32       390        398   391,25   396,75
44             S33       398        406   399,25   404,75
45             S34       406        414   407,25   412,75
46             S35       414        422   415,25   420,75
47             S36       422        430   423,25   428,75
48             S37       430        438   431,25   436,75
49             S38       438        446   439,25   444,75
50             S39       446        454   447,25   452,75
51             S40       454        462   455,25   460,75
52             S41       462        470   463,25   468,75
53              21       470        478   471,25   476,75
54              22       478        486   479,25   484,75
55              23       486        494   487,25   492,75
56              24       494        502   495,25   500,75
57              25       502        510   503,25   508,75
58              26       510        518   511,25   516,75
59              27       518        526   519,25   524,75
60              28       526        534   527,25   532,75
61              29       534        542   535,25   540,75
62              30       542        550   543,25   548,75
63              31       550        558   551,25   556,75
64              32       558        566   559,25   564,75
65              33       566        574   567,25   572,75
66              34       574        582   575,25   580,75
67              35       582        590   583,25   588,75
68              36       590        598   591,25   596,75
69              37       598        606   599,25   604,75
70              38       606        614   607,25   612,75
71              39       614        622   615,25   620,75
72              40       622        630   623,25   628,75
73              41       630        638   631,25   636,75
74              42       638        646   639,25   644,75
75              43       646        654   647,25   652,75
76              44       654        662   655,25   660,75
77              45       662        670   663,25   668,75
78              46       670        678   671,25   676,75
79              47       678        686   679,25   684,75
80              48       686        694   687,25   692,75
81              49       694        702   695,25   700,75
82              50       702        710   703,25   708,75
83              51       710        718   711,25   716,75
84              52       718        726   719,25   724,75
85              53       726        734   727,25   732,75



                               51
Table 11.2 (continued)

 86            54        734        742   735,25   740,75
 87            55        742        750   743,25   748,75
 88            56        750        758   751,25   756,75
 89            57        758        766   759,25   764,75
 90            58        766        774   767,25   772,75
 91            59        774        782   775,25   780,75
 92            60        782        790   783,25   788,75
 93            61        790        798   791,25   796,75
 94            62        798        806   799,25   804,75
 95            63        806        814   807,25   812,75
 96            64        814        822   815,25   820,75
 97            65        822        830   823,25   828,75
 98            66        830        838   831,25   836,75
 99            67        838        846   839,25   844,75
100            68        846        854   847,25   852,75
101            69        854        862   855,25   860,75




                               52
   Frequency Table for M/N AIR Standard Channels
      This American standard of terrestrial TV is used in the countries of North and South America,
and also in South Korea.

    Table 11.3
 Ref.          Channel            F bottom           F top          F video           F audio
   1              2                   54               60            55,25             59,75
   2              3                   60               66            61,25             65,75
   3              4                   66               72            67,25             71,75
   4              5                   76               82            77,25             81,75
   5              6                   82               88            83,25             87,75
   6              7                  174              180           175,25            179,75
   7              8                  180              186           181,25            185,75
   8              9                  186              192           187,25            191,75
   9             10                  192              198           193,25            197,75
  10             11                  198              204           199,25            203,75
  11             12                  204              210           205,25            209,75
  12             13                  210              216           211,25            215,75
  13             14                  470              476           471,25            475,75
  14             15                  476              482           477,25            481,75
  15             16                  482              488           483,25            487,75
  16             17                  488              494           489,25            493,75
  17             18                  494              500           495,25            499,75
  18             19                  500              506           501,25            505,75
  19             20                  506              512           507,25            511,75
  20             21                  512              518           513,25            517,75
  21             22                  518              524           519,25            523,75
  22             23                  524              530           525,25            529,75
  23             24                  530              536           531,25            535,75
  24             25                  536              542           537,25            541,75
  25             26                  542              548           543,25            547,75
  26             27                  548              554           549,25            553,75
  27             28                  554              560           555,25            559,75
  28             29                  560              566           561,25            565,75
  29             30                  566              572           567,25            571,75
  30             31                  572              578           573,25            577,75
  31             32                  578              584           579,25            583,75
  32             33                  584              590           585,25            589,75
  33             34                  590              596           591,25            595,75
  34             35                  596              602           597,25            601,75
  35             36                  602              608           603,25            607,75
  36             37                  608              614           609,25            613,75
  37             38                  614              620           615,25            619,75
  38             39                  620              626           621,25            625,75
  39             40                  626              632           627,25            631,75
  40             41                  632              638           633,25            637,75



                                                53
  Table 11.3 (continued)

Ref.         Channel       F bottom        F top   F video   F audio
 41            42             638           644    639,25    643,75
 42            43             644           650    645,25    649,75
 43            44             650           656    651,25    655,75
 44            45             656           662    657,25    661,75
 45            46             662           668    663,25    667,75
 46            47             668           674    669,25    673,75
 47            48             674           680    675,25    679,75
 48            49             680           686    681,25    685,75
 49            50             686           692    687,25    691,75
 50            51             692           698    693,25    697,75
 51            52             698           704    699,25    703,75
 52            53             704           710    705,25    709,75
 53            54             710           716    711,25    715,75
 54            55             716           722    717,25    721,75
 55            56             722           728    723,25    727,75
 56            57             728           734    729,25    733,75
 57            58             734           740    735,25    739,75
 58            59             740           746    741,25    745,75
 59            60             746           752    747,25    751,75
 60            61             752           758    753,25    757,75
 61            62             758           764    759,25    763,75
 62            63             764           770    765,25    769,75
 63            64             770           776    771,25    775,75
 64            65             776           782    777,25    781,75
 65            66             782           788    783,25    787,75
 66            67             788           794    789,25    793,75
 67            68             794           800    795,25    799,75
 68            69             800           806    801,25    805,75
 69            70             806           812    807,25    811,75
 70            71             812           818    813,25    817,75
 71            72             818           824    819,25    823,75
 72            73             824           830    825,25    829,75
 73            74             830           836    831,25    835,75
 74            75             836           842    837,25    841,75
 75            76             842           848    843,25    847,75
 76            77             848           854    849,25    853,75
 77            78             854           860    855,25    859,75
 78            79             860           866    861,25    865,75
 79            80             866           872    867,25    871,75
 80            81             872           878    873,25    877,75
 81            82             878           884    879,25    883,75
 82            83             884           890    885,25    889,75




                                      54
  Frequency Table for M/N CATV Standard Channels
    This American standard is for cable television, it is used in the countries of North and South
America, and in South Korea.

   Table 11.4
  Ref.           Channel           F bottom           F top          F video           F audio
    1               2                  96              102            97,25            101,75
    2               3                 102              108           103,25            107,75
    3               4                 108              114           109,25            113,75
    4               5                 114              120           115,25            119,75
    5               6                 120              126           121,25            125,75
    6               7                 126              132           127,25            131,75
    7               8                 132              138           133,25            137,75
    8               9                 138              144           139,25            143,75
    9              10                 144              150           145,25            149,75
   10              11                 150              156           151,25            155,75
   11              12                 156              162           157,25            161,75
   12              13                 162              168           163,25            167,75
   13              14                 168              174           169,25            173,75
   14              15                 216              222           217,25            221,75
   15              16                 222              228           223,25            225,75
   16              17                 228              234           229,25            229,75
   17              18                 234              240           235,25            233,75
   18              19                 240              246           241,25            237,75
   19              20                 246              252           247,25            241,75
   20              21                 252              258           253,25            245,75
   21              22                 258              264           259,25            249,75
   22              23                 264              270           265,25            253,75
   23              24                 270              276           271,25            257,75
   24              25                 276              282           277,25            261,75
   25              26                 282              288           283,25            265,75
   26              27                 288              294           289,25            269,75
   27              28                 294              300           295,25            273,75
   28              29                 300              306           301,25            277,75
   29              30                 306              312           307,25            281,75
   30              31                 312              318           313,25            285,75
   31              32                 318              324           319,25            289,75
   32              33                 324              330           325,25            293,75
   33              34                 330              336           331,25            297,75
   34              35                 336              342           337,25            301,75
   35              36                 342              348           343,25            305,75
   36              37                 348              354           349,25            309,75
   37              38                 354              360           355,25            313,75
   38              39                 360              366           361,25            317,75
   39              40                 366              372           367,25            321,75
   40              41                 372              378           373,25            325,75
   41              42                 378              384           379,25            329,75


                                                55
 Table 11.4 (continued)

Ref.          Channel     F bottom        F top   F video   F audio
 42             43           384           390    385,25    333,75
 43             44           390           396    391,25    395,75
 44             45           396           402    397,25    401,75
 45             46           402           408    403,25    407,75
 46             47           408           414    409,25    413,75
 47             48           414           420    415,25    419,75
 48             49           420           426    421,25    425,75
 49             50           426           432    427,25    431,75
 50             51           432           438    433,25    437,75
 51             52           438           444    439,25    443,75
 52             53           444           450    445,25    449,75
 53             54           450           456    451,25    455,75
 54             55           456           462    457,25    461,75
 55             56           462           468    463,25    467,75
 56             57           468           474    469,25    473,75
 57             58           474           480    475,25    479,75
 58             59           480           486    481,25    485,75
 59             60           486           492    487,25    491,75
 60             61           492           498    493,25    497,75
 61             62           498           504    499,25    503,75
 62             63           504           510    505,25    509,75
 63             64           510           516    511,25    515,75
 64             65           516           522    517,25    521,75
 65             66           522           528    523,25    527,75
 66             67           528           534    529,25    533,75
 67             68           534           540    535,25    539,75
 68             69           540           546    541,25    545,75
 69             70           546           552    547,25    551,75
 70             71           552           558    553,25    557,75
 71             72           558           564    559,25    563,75
 72             73           564           570    565,25    569,75
 73             74           570           576    571,25    575,75
 74             75           576           582    577,25    581,75
 75             76           582           588    583,25    587,75
 76             77           588           594    589,25    593,75
 77             78           594           600    595,25    599,75
 78             79           600           606    601,25    605,75
 79             80           606           612    607,25    611,75
 80             81           612           618    613,25    617,75
 81             82           618           624    619,25    623,75
 82             83           624           630    625,25    629,75
 83             84           630           636    631,25    635,75
 84             85           636           642    637,25    641,75



                                     56