1. Gigabit Ethernet TxRx ECE164.02 Group 2 – Presentation 4 Andrew Tupper February 26, 2004

2. Group 2 – Presentation 4 February 26, 2004 Gigabit EthernetSummary 2/19-2/26 Current & Completed Tasks Fix & Test Rx Test Board Build Tx Test Board Contact Vendors of VCSELs & PDs Tx & Rx Schematic Diagrams Begin PCB Design Revise Gantt Chart Upcoming Tasks Complete PCB Design Order PCB’s Complete & Test Tx Test Board

3. Initial problem caused by faulty power connection Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet No recognizable signal

4. Replaced power connectors with correct, on-chip style connectors Group 2 – Presentation 4 February 26, 2004 Rx Test Board Rx test board works! Gigabit Ethernet

5. Scope set to 2 second persistence 0dB attenuation 1 minute B.E.R. of 2.8E-08 Receiver is overdriven Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

6. Scope set to 2 second persistence 10dB attenuation 1 minute B.E.R. of 0.0E-9 Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

7. Scope set to 2 second persistence 20dB attenuation 1 minute B.E.R. of 0.0E-9 Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

8. Scope set to 2 second persistence 30dB attenuation 1 minute B.E.R. of 0.0E-9 Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

9. Scope set to 2 second persistence 40dB attenuation 1 minute B.E.R. of 0.0E-9 Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

10. Scope set to 2 second persistence 50dB attenuation 1 minute B.E.R. of 2.2E-1 Signal Loss B.E.R. becomes unacceptable at 42dB attenuation Group 2 – Presentation 4 February 26, 2004 Rx Test BoardGigabit Ethernet

11. Completely assembled Tx test board, excluding SMA outputs… Group 2 – Presentation 4 February 26, 2004 Tx Test BoardGigabit Ethernet

12. Tx outputs are shorted to ground! Waiting on engraver to complete assembly Group 2 – Presentation 4 February 26, 2004 Tx Test BoardGigabit Ethernet

13. Secured sample HFE438x-522 VCSEL from Honeywell Difficulty contacting Luxnet in search of VG1A 9001 VCSEL In contact with OSI and Hamamatsu for PDs: may have to collaborate with group 1 to meet minimum order requiremetns Group 2 – Presentation 4 February 26, 2004 PDs & VCSELs

14. Group 2 – Presentation 4 February 26, 2004 Rx SchematicGigabit Ethernet Generated Rx schematic in ExpressSCH

15. Group 2 – Presentation 4 February 26, 2004 Tx SchematicGigabit Ethernet Generated Tx schematic in ExpressSCH

16. Group 2 – Presentation 4 February 26, 2004 PCB LayoutGigabit Ethernet Began board layout with ExpressPCB Waiting on final approval of schematics before moving ahead with PCB layout

17. PCB LayoutGigabit Ethernet