| Field Name | Length (bits) | Bit | Contents | Description | ||
|---|---|---|---|---|---|---|
| Item | Total | Algn | Off | |||
| deaHousekeepingData | 160 + 32*n | 32 | 0 | telemetry Packet |
DEA Housekeeping values (see table 70, swreq Rev. I) | |
header |
64 | 64 | 32 | 0 | telemetry Header |
Telemetry Packet Header |
synch |
32 | 32 | 32 | 0 | uint32 = 0x736f4166 |
This field delimits the start of a telemetry packet. |
telemetryLength |
10 | 10 | 1 | 32 | uint10 = 5+n |
This field indicates the total number of 32-bit words in the telemetry packet |
formatTag |
6 | 6 | 1 | 42 | uint6 = 11 |
This field identifies the content of the telemetry packet [see enum TlmFormatTag]: TTAG_DEA_HOUSE |
sequenceNumber |
16 | 16 | 1 | 48 | uint16 |
This field is the sequence number of the telemetry packet |
deaBlockId |
32 | 32 | 32 | 64 | uint32 |
DEA Parameter Block Identifier |
commandId |
16 | 16 | 16 | 96 | uint16 |
Command Id which started DEA housekeeping acquisition |
bepTickCounter |
32 | 32 | 32 | 128 | uint32 |
Back End Timer Tick interrupt counter value at start of data accumulation |
entries[pl-5] |
32 | 32*n | 32 | 160 | dea HousekeepingResponse |
Array of tagged DEA Housekeeping values |
query |
16 | 16 | 16 | 160+ 32*i |
query DeaHousekeeping |
Query which produced the entry |
ccdId |
8 | 8 | 8 | 160+ 32*i |
uint8 |
CCD Identifier to choose the corresponding DEA CCD Controller, or CCD_DESELECT to choose the DEA interface board [see enum CcdId] |
queryId |
8 | 8 | 8 | 168+ 32*i |
uint8 |
DEA query code to send to board [see enum DeaQueryCcdId for CCD board queries, and DeaQueryCntlId for interface board queries] |
value |
16 | 16 | 16 | 176+ 32*i |
uint16 |
DEA Housekeeping value read from identified item. This value will contain 0xffff if the corresponding query to the DEA times out, or if the queried board is not powered on. |
| i | the index of an element in the entries array (0 < i < n) |
| n | the dimension of the entries array [pl-5] |
| pl | the value of the telemetryLength field |