GALFA Spectrometer Documentation
1. Introduction/System Overview
Description and Specifications (html)
(
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)
Remote Boot and Flash Memory
Security/Access
7. Timing Board
Description
Schematics (pdf)
Layout (pdf)
Parts List
8. Software
Xilinx Software/Firmware
Spectrometer Readout Software
Operating System
(
readme
)
9. Revisions and Modifications (Hardware and Software)
Quadrature downconverter (August 9, 2004)
Spectrometer board (September 1, 2004)
10.
Pictures
11. Contacts
Phone and E-mail
Last Updated: October 2, 2004