GOL In Lab System Test

1
GOL In Lab System Test

• Physics Department, SMU
• Annie Xiang
• Summer, 2006

2
List of Tests

• BERT part1
• Jitter test part1
• Jitter test part2
• BERT part2
• Power budget, power up

3
BERT part1

• 40MHz_at_Tx, 32bits
• 80MHz_at_Rx, 16bits
• Feed counter data
• Electrical/optical error free
• Error injection successful
• Done

4
Jitter test part1

• Frame clock to serial data jitter
• GOL allowable p-p jitter on clkLHC 100ps
• Crystal Jitter, 1ps RMS spec
• Real time oscilloscope software pack worked (use
  golden pll, no filter, TJ_at_BERe-12)
• Crystal jitter 8ps measured
• GOL Comma data jitter 5ps

5
Jitter test part1
XO clk
Smaller RJ Larger DJ Smaller TJ
GOL Serial Data
6
Jitter test part1
XO clk
GOL Serial Data
7
Jitter test part1
XO clk
GOL Serial Data
8
Jitter test part1
XO clk
GOL Serial Data
9
Jitter test part2

• System Jitter tolerance
• TLK2501 as receiver

10
BERT part2

• PRBS, HDL
• DIO access error count, Labview

11
Power management

• Optical attenuation power budget
• Power up scheme - reliability