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Gigabit Ethernet Design ECE 4006C – Spring 2003

Gigabit Ethernet Design ECE 4006C – Spring 2003. Group 7 Presentation #10 Courtenay Smith April 17 th , 2003. Progress Report. Sensitivity problem solved Eye diagram comparisons Attenuation testing complete: Tx at 5dB, and 10dB. Loopback (TxRx) at 5dB, 10dB, and 15dB

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Gigabit Ethernet Design ECE 4006C – Spring 2003

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  1. Gigabit Ethernet DesignECE 4006C – Spring 2003 Group 7 Presentation #10 Courtenay Smith April 17th, 2003

  2. Progress Report • Sensitivity problem solved • Eye diagram comparisons • Attenuation testing complete: • Tx at 5dB, and 10dB. • Loopback (TxRx) at 5dB, 10dB, and 15dB • Alignment tolerance test completed. • Eye diagrams and Plot • Run 2 layout completed and shipped. • Begun work on final paper. Presentation #10 - April 17, 2003

  3. VCSEL Power Test Setup Presentation #10 - April 17, 2003

  4. V [ ] 8 mV = measured P mW =  P 25 W IN 320.5 1 320.5 289 mV =  P .903 mW 2 320.5 Sensitivity Problem Corrected • We were not driving the VCSEL hard enough. Presentation #10 - April 17, 2003

  5. Signal Comparisons Tx PRBS7 - Old Loopback PRBS7 - Old Loopback PRBS7 - New Tx PRBS7 - New Presentation #10 - April 17, 2003

  6. Tx Attenuation at 5dB D21.5 at 5dB K28.5 at 5dB K28.7 at 5dB PRBS7 at 5dB Presentation #10 - April 17, 2003

  7. Tx Attenuation at 10dB D21.5 at 10dB K28.5 at 10dB K28.7 at 10dB PRBS7 at 10dB Presentation #10 - April 17, 2003

  8. Loopback Attenuation at 5dB D21.5 at 5dB K28.5 at 5dB K28.7 at 5dB PRBS7 at 5dB Presentation #10 - April 17, 2003

  9. Loopback Attenuation at 10dB D21.5 at 5dB K28.5 at 5dB D21.5 at 10dB K28.7 at 10dB Presentation #10 - April 17, 2003

  10. Loopback Attenuation at 15dB D21.5 at 15dB K28.7 at 15dB Presentation #10 - April 17, 2003

  11. Alignment Tolerance Setup Presentation #10 - April 17, 2003

  12. Unconnectorized PD Eyes D21.5 K28.5 K28.7 PRBS7 Presentation #10 - April 17, 2003

  13. Alignment Tolerance Results Presentation #10 - April 17, 2003

  14. Alignment Tolerance Results Diameter of bottom circle  45 m Height of cone  76.7 m Presentation #10 - April 17, 2003

  15. Run 2 Layout Presentation #10 - April 17, 2003

  16. Gantt Chart Scheduled Progress Event On Schedule Progress Presentation #10 - April 17, 2003

  17. Game Plan • Assemble and Test Run 2 PCB. • Full throttle on FINAL PAPER. Presentation #10 - April 17, 2003

  18. Dan Quayle Quote of the Day.. “This president is going to lead us out of this recovery. It will happen.” Presentation #10 - April 17, 2003

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