Project GabE ECE 135

1
Project GabEECE 135 Spring 2005
Rahmin Sarabi

• Omar Al-Jadda
• Patrick Crosby
• Adam Durity

2
Progress Report

• Finalized Gantt Chart
• Drafted Tx Schematic
• Submitted for first review
• Ordered Major Components
• Drafted Bill of Materials
• Website now Live

3
Final Gantt Chart
4
Tx Schematic - Rev. 1.0
5
Schematic Design Theory

• Must decouple all the power connections of the
  circuit to ensure that high frequency noise on
  the power line does not interfere with sensitive
  parts of the circuit.
• Capacitors near every power and ground
  connection.
• POT1 is used to change the magnitude of the
  output
• POT2 is used to control the output power of the
  VCSEL
• The three element filter (C3,L1,C4) in the top
  left provides additional protection from VCC
  noise by bandlimiting the signal
• In series with each potentiometer is a 'limiting
  resistor' that should protect the circuit if the
  POT resistance too low

6
Ordered Major Components

• VCSEL AOC HFE419x-441
• ROSA AOC HFD3180-108
• Expected Delivery 2/22/05

7
Bill of Materials
8
Project Website

• Functional and up-to-date content

http//www.ee.duke.edu/mbrooke/ECE135/2005_01_Spr
ing/G1/
9
Upcoming Week

• Finalize Tx Schematic
• Draft and Finalize Rx Schematic
• Initiate Board Design
• Target - Submit for review 2/28/05
• Order Remaining Components