The Galileo Energetic Particles Detector

Galileo EPD Handbook

Chapter 2. EPD Software

EPD SBAND Mission Software Requirements

Source: S. Jaskulek, various dates

Note: This material is based on 2 versions of the SBAND document--Revision H, Software Version 2, and a set of pages to update the document from H to I and referencing Software Version 3.

Contents

• Introduction
• Software Versions
• Science Background
• EPD Telemetry Output Rates
• EPD Rate Channel Data Processing
• Telemetry Output Buffers in the EPD Memory
• CDS Rate Channel to Bin Algorithm
• Rate Channel Array Compression
• CMS Pulse Height Analysis (PHA) Data
• CDS-EPD Interface Description
• CDS-Produced EPD Telemetry Record
• New EPD Software Tasks
• Telemetry Mode Change
• Motor Control Functions
• New EPD Command Functions
• Transition Mode Commands
• EPD Memory Storage Availability
• EPD Memory Map
• Appendix A: Buffer storage for the EPD rate channel bins
• Appendix B: EPD Accumulator Hardware Addresses
• Appendix C: EPD Software Patch Hook Values
• Appendix D: EPD Telemetry Mode Definition Blocks

List of Revisions - Revision H

F                            7/31/95 Corrections made following CDS integration tests.
The RTI9 address in the RECORD mode telemetry definition block was wrong;
it was changed to 1A8F. The HV level command code at address 1B20 was
modified to fix a bug and agree with requirements. A fourth and fifth transitional 
command, 25JKRP (C0) and 25RESC (01) were added to the RT mode list.
A correction was made to the science record status byte description (section 
11.2.6); the motor direction and position are sampled at the end of the science
record, not the beginning.  Science record resynchronization requirements (when 
scanning is interrupted) are more explicitly described in section 13.

List of Revisions - Revision I

Next: Introduction 

QUICK FACTS

RELATED LINKS