Gigabit Ethernet PMD Opto-Link, Inc. – Status Report 7 Andrew Meyerson March 24, 2005

Gigabit Ethernet: Progress Summary Completed Tasks  Received Parts  Built first board  Began testing on first board  First Draft of Report  New Website  Spring Break Fun Next Week’s Tasks  Troubleshoot first board  Build, test, and troubleshoot second and third board designs  Design review for next fabrication  Order additional parts

Gantt Chart

Board Construction  Boards and all of the parts arrived either before or over Spring Break  Construction began upon arrival from Spring Break  First complete board finished Tuesday afternoon

Board Construction (cont)  Each board has three Tx and Rx circuits One common anode (AOC VCSEL) One common cathode (Emcore VCSEL) One aggressive design  First circuit constructed and tested was common anode

Board Layout Review

Board Construction (cont)  0603 parts are tiny…was it a good idea?  Found a mistake on the board and used board surgery to attempt to fix it

Board Testing  Rx component works  Tx has problems Board surgery did not work well enough There is a short somewhere on the board that we need to find

Current Budget Digi-KeyBC1252CT-ND $ $ 2.90 Digi-KeyRHM20.0HCT-ND $ $ 0.76 Digi-KeyRHM100HCT-ND $ $ 0.76 Digi-KeyRHM115HCT-ND $ $ 0.76 Digi-Key3296W-102-ND $ $ Digi-Key3296W-253-ND $ $ Digi-Key ND $ $ 1.20 Express PCB $ $ Advanced Optical ComponentsHFE419x-541 $ $ Advanced Optical ComponentsHFD $ $ Digi-KeyCP-002APJ-ND $ $ 4.38 Jameco188525$ $ Shipping $ Total: $

Next Week  Troubleshoot AOC VCSEL circuit  Build Emcore circuit  Build aggressive circuit  Design Review of first circuits  Order more parts?  Stay Classy