GALFA Spectrometer Documentation

1. Introduction/System Overview

• Description and Specifications (pdf)
• System Block Diagram (pdf)
• Integration Times

2. User Manual

• GALFA Spectrometer Setup, Operations, Basics Manual (pdf)
• GALFA Diagnostic Software Overview
• Error Flag Codes

3. Signal Processing

• Polyphase Filter Bank
• Low-Pass Filter
• Notes on Filter Coefficients

4. 16-Channel Quadrature Downconverter (IF to IQ Baseband Converter)

• Description/Block Diagram
• Design of Quadrature Downconverter Board (pdf)
• Design of Low-Pass Filters (pdf)
• Design of 16-Channel DAC/Gain Control Board (pdf)
• Downconverter Gain Control
• Software to Program DACs (Gain Control)
• Downconverter Image Rejection Test Data
• Downconverter LO Isolation Test Data
• Downconverter Enclosure Drawings

5. Spectrometer Board

• Description
• Jumper Settings
• Schematics (pdf)
• Test Procedures
• LED Functions
• Design of Digital Decimating FIR Filter (pdf)

6. Motorola CPV5350 CPU Board

• Installation and Reference Guide (pdf)
• BIOS and Programmer's Reference Guide (pdf)
• CPU Configuration (pdf)

7. Timing Board

• Description
• Schematics (pdf)
• Layout (pdf)
• Parts List

8. IF Splitter/Amplifier

• Description
• Block diagram (pdf)

9. Software

• Xilinx FPGA Configuration (v0.5.0)
• CPU Board Operating System (v0.5.0) (readme)

10. Revisions and Modifications (Hardware and Software)

• Quadrature downconverter (August 9, 2004)
• Spectrometer board (September 1, 2004)
• GALFA system software/firmware (October 12, 2004)

11. Reports and Memos

• GALSPECT as of 11 OCT 2004 (pdf)

12. Pictures

13. Contacts

• Phone and E-mail