GALILEO
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Galileo Table of Contents Page.
The Galileo Energetic Particles Detector
Galileo EPD Handbook
Chapter 2. EPD Software
EPD SBAND Mission Software Requirements (continued)
Source: S. Jaskulek, various dates
CDS-EPD Interface Description
Table 10. EPD Telemetry Mode Definition Block Descriptions
| Address Range, hex | # of Bytes | Description |
| Record Mode | ||
| 1800-1826 | 39 | S/W Patch Hooks |
| 1827-1865 | 63 | Accum. Service Table |
| 1866 | 1 | TLM Mode (=1) |
| 1800-1866 | 103 | Total |
| Real-Time Mode Map 1 | ||
| 1800-1826 | 39 | S/W Patch Hooks |
| 1827-1857 | 49 | Accum. Service Table (Map1) |
| 1858 | 1 | MapID (=0) |
| 1859-1865 | 13 | Filler (zeroes) |
| 1866 | 1 | TLM Mode (=2) |
| 1800-1866 | 103 | Total |
| Real-Time Mode Map 2 | ||
| 1800-1826 | 39 | S/W Patch Hooks |
| 1827-1857 | 49 | Accum. Service Table (Map2) |
| 1858 | 1 | MapID (=1) |
| 1859-1865 | 13 | Filler (zeroes) |
| 1866 | 1 | TLM Mode (=2) |
| 1800-1866 | 103 | Total |
Table 11. Bus Transactions for Version3 Software Implementation
| Item Description | Transfer Period | RTI |
Source Address |
Destin. Address | Size (bytes) |
| AACS Spin Rotor Vector | once every minor frame | 8 | CDS | EPD-2000H | 6 |
| First RT TLM Packet (header, 42 accumulator values) | once every minor frame | 3 | EPD-2006H | CDS | 127 |
| Second RT TLM Packet (6 accumulator values, HV monitor value (1 byte), Science Record Array (5 bytes Hskpg/Status + 60 bytes CMS PHA (30 are filler in Map1) | once every minor frame | 3 | EPD-2085H | CDS | 84 (only 54 bytes used in Map1 |
| New Science Record Flag beginning every science record | ** | 6* | CDS | EPD-1867H | 1 |
| Telemetry Mode Definition Block (includes S/W patch hooks, Accumulator Service Table, MapID, and TLM_Mode_ID every mode change) | 6* | CDS | EPD-1800H | 39 |
Notes: *
RTI has not been finalized yet. The EPD GSE has been using
RTI 6 for testing purposes. The RTI must be either 0, 2, 4,
or 6.
** The new science flag in the EPD memory is set by the CDS
and cleared by the EPD processor after it is read.
Next: CDS-Produced EPD Telemetry Record
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Updated 8/23/19, Cameron Crane
QUICK FACTS
Manufacturer: The Galileo Spacecraft
was manufactured by the Jet Propulsion Laboratory,
Messerschmitt-Bölkow-Blohm, General Electric, and the
Hughes Aircraft Company.
Mission Duration: Galileo was planned to have a mission duration of around 8 years, but was kept in operation for 13 years, 11 months, and 3 days, until it was destroyed in a controlled impact with Jupiter on September 21, 2003.
Destination: Galileo's destination was Jupiter and its moons, which it orbitted for 7 years, 9 months, and 13 days.
Mission Duration: Galileo was planned to have a mission duration of around 8 years, but was kept in operation for 13 years, 11 months, and 3 days, until it was destroyed in a controlled impact with Jupiter on September 21, 2003.
Destination: Galileo's destination was Jupiter and its moons, which it orbitted for 7 years, 9 months, and 13 days.