| Field Name | Length (bits) | Bit | Contents | Description | ||
|---|---|---|---|---|---|---|
| Item | Total | Algn | Off | |||
| dataBiasError | 160 + 32*n | 32 | 0 | telemetry Packet | 
Bias Error Data Packet from a FEP | |
  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 = 33 | 
This field identifies the content of the telemetry packet [see enum TlmFormatTag]: TTAG_SCI_BIAS_ERROR | 
    sequenceNumber | 
16 | 16 | 1 | 48 | uint16 | 
This field is the sequence number of the telemetry packet | 
  biasStartTime | 
32 | 32 | 32 | 64 | uint32 | 
Science timestamp counter value at start of the bias computation | 
  biasParameterId | 
32 | 32 | 32 | 96 | uint32 | 
Bias Run's Parameter Block's Identifier field | 
  ccdId | 
4 | 4 | 1 | 128 | uint4 | 
Identify which CCD produced the error(s) [see enum CcdId] | 
  fepId | 
3 | 3 | 1 | 132 | uint3 | 
Identify which FEP computed the error(s) [see enum FepId] | 
  biasErrors[pl-5] | 
32 | 32*n | 32 | 160 | bias Error | 
Array of bias errors from this FEP during the current exposure | 
    row | 
10 | 10 | 1 | 160+ 32*i  | 
uint10 | 
Bias Map row containing the bias error | 
    column | 
10 | 10 | 1 | 170+ 32*i  | 
uint10 | 
Bias Map column containing the bias error | 
    value | 
12 | 12 | 1 | 180+ 32*i  | 
uint12 | 
Bias Map value which produced the error | 
| i | the index of an element in the biasErrors array (0 < i < n) | 
| n | the dimension of the biasErrors array [pl-5] | 
| pl | the value of the telemetryLength field |