Embed
Email

8

Document Sample

Shared by: gegeshandong
Categories
Tags
Stats
views:
11
posted:
1/2/2012
language:
pages:
12
ECE164.02 Group 2 – Presentation 8







Gigabit Ethernet TxRx









Andrew Tupper April 15, 2004

Gigabit Ethernet Summary 4/8-4/15



Current & Completed Tasks Upcoming Tasks

 Nearly Completed Aggressive

Tx & Rx Boards  Complete Aggressive Rx

 Performed Tx & Rx (need SMA connectors)

Troubleshooting  Continue Testing (cross

 Optically Tested Tx & Rx

talk, Rx BER,

 Performed Optical BER test on

Tx performance under

 Tested Loop-Back Capability attenuation, etc…)

 Measured Optical Power at  Prepare Final

VCSEL Presentation and Report

 Updated Gantt Chart







Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Aggressive TxRx





 Due to problems with

conservative design,

assembled Aggressive TxRx.

 Completed Assembly, except

for missing SMAs

 No radical heating to indicate

short circuits









Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Tx Optical Test



 Aggressive Tx design works

optically









Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Tx Optical Test









 Scope set to trigger from  Scope set to trigger from

waveform recovery clock

 1 sec persistence  1 sec persistence

 No attenuation  No attenuation



Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Tx BER Test





 Connected data

from optical Rx in

pattern generator

 0dB attenuation

 BER tester set to

average for infinite

amount of time





Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Tx BER Test









 0dB attenuation  0dB attenuation

 Several minute test yielded  One hour+ test yielded BER of

BER of 0.0E-11 0.3E-12





Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Rx Optical Test



 Tested aggressive Rx with

optical output from pattern

generator

 No SMA connectors on Rx, so

used probe instead









Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Rx Optical Test



 0 dB attenuation

 1 second persistence

 Aggressive Rx works!!









Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Loop-Back Test



 Looped Tx output into PD on

aggressive Rx

 0dB attenuation

 Stylish Goggles!









Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Loop-Back Test









 Stage could not be used because Tx

output interfered

 Even while holding, eye was detected!



Group 2 – Presentation 8 April 15, 2004

Gigabit Ethernet Gantt Chart

Group 2 Gantt Chart - 1 Gbps Optical Ethernet

Jan Feb M arch April

Project Steps: 1-10 11-20 21-31 1-10 11-20 21-29 1-10 11-20 21-31 1-10 11-20 21-30

background research (Jan 8 - Apr 13)

test eval board (Feb 5 - Feb 11)

Optical link budget (Feb 10 - Feb 19)

Choose parts (Feb 11 - Feb 19)

Order VCSEL/PD's (Feb 19 -Feb 25)

Build test board (Feb 13 - Feb 20)

Design Schematic (Feb 15 - Feb 22)

Board design (Feb 19 - March 2)

Design review (Feb 26 - March 4)

Order PCB's (March 5- March 14)

Spring Break (March 5 - March 14)

Construct Board (March 14 - March 21)



Testing/Troubleshooting (March 21 - March 28)



Design Modifications (April 1 - April 7)

Build second board (April 7 - April 13)

Final report (April13 - April 21)

Test (Feb 5)

Midterm Report (March 19)

Final Report (April 21)







Projected Time

Event Completed

Overdue



Related docs
Other docs by gegeshandong
Streambank Erosion Severity Index no photos
Views: 1  |  Downloads: 0
Capitulo_2_v1.1
Views: 0  |  Downloads: 0
吴永2
Views: 0  |  Downloads: 0
sir2007-5130
Views: 0  |  Downloads: 0
Course Outline
Views: 0  |  Downloads: 0
DFAS_RS_Nov_29_2011
Views: 0  |  Downloads: 0
Math Awards FY05-FY10
Views: 0  |  Downloads: 0
ECE Plan for __Tussey Mountain PreK Counts___
Views: 0  |  Downloads: 0
By registering with docstoc.com you agree to our
privacy policy

You are almost ready to download!

You are almost ready to download!