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ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002). Progress:. Power Budget has been Verified Built a New Tx Board and the results are promising Performed Alignment Tolerance Tests on Rx. Big Obstacle!!!!! - PowerPoint PPT Presentation
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ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002)
• Power Budget has been Verified
• Built a New Tx Board and the results are promising
• Performed Alignment Tolerance Tests on Rx.
• Big Obstacle!!!!!The System Test Module was
Down NO EYE
Progress:
• Continue Working on Tx Board
• Continue Alignment Tolerance
Tests on other PD
Next Week:
ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002)
Tx Board Debugging• Built new board• Recalculated Rmod• Replaced 1K Rmod
POT with 20K POT• Lowered VCSEL to less
than 4mm from board• Cut off VCSEL leads
Next step:
•Build and test new TxPotential Problem
•Driving Imod too high could have effected the chip or VCSEL
ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002
Preliminary Transmitter Board Test Results- PRBS7
ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002
XYZ-TEST for Z Higher by 0.87mm
-15
-10
-5
0
5
10
15
-10 -5 0 5 10 15
XYZ-Test of RX Board (PD-Hamamatsu S7911)
-25
-20
-15
-10
-5
0
5
10
15
20
25
-30 -20 -10 0 10 20 30
XYZ-Test of RX Board (PD-Hamamatsu S7911)
-25
-20
-15
-10
-5
0
5
10
15
20
25
-30 -20 -10 0 10 20 30
z=0 z=0.87mm
Units: x10 microns
ECE 4006B Fall, 2002, Group 3, ROBIEL TECLEMICHAEL Progress Report Period (November 7-14, 2002)
Center of Measurement Sample 10 Points
Eye for raised Z by 0.87mm
REV 03 22-Aug 29-Aug 5-Sep 12-Sep 19-Sep 26-Sep 3-Oct 10-Oct 17-Oct 24-Oct 31-Oct 7-Nov 14-Nov 21-Nov 28-Nov 5-Dec
Research PMeasurements/Lab Work A
Optical Link Budget POrder VCSEL and PDs O O E
Design optical Rx w/ on-board PD R R RDesign optical Tx w/on-board VCSEL D D &
Design Rx PCB E E CDesign TX PCB R R A
Lay out & submit Rx & Tx PCB TAseemble Rx & Tx PCB C
Measurements/Lab Work HAnalyze results
Papers Due 3pm U 3pmExam P
Expected Actual
XYZ-Test of RX Board (PD-Hamamatsu S7911)
-25
-20
-15
-10
-5
0
5
10
15
20
25
-30 -20 -10 0 10 20 30
Units: x10 microns
XYZ-TEST for Z Higher by 0.87mm
-15
-10
-5
0
5
10
15
-10 -5 0 5 10
Units: x10 microns
