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Trimble ThunderBolt E GPS Disciplined Clock User Guide 57
Trimble Standard Interface Protocol A
Note – The sample length is the number of milliseconds over which the sample was
averaged.
Note – The code phase value is the average delay over the sample interval of the received
C/A code, and is measured with respect to the receiver's millisecond timing reference.
Report Packet 0x5B: Satellite Ephemeris Status
Packet 0x5B provides satellite ephemeris status. This packet is sent in response to
packet 0x3B.
Report Packet 0x5C: Satellite Tracking Status
The receiver sends this packet in response to command packet 0x3C.
9-12 Code phase Single 1/16th chip
13-16 Doppler Single Hertz @ L1
17-24 Time of measurement Double seconds
Byte Item Type Units
0 SV PRN number UINT8
1-4 Time of collection Single seconds
5 Health UINT8
6IODE UINT8
7-10 toe Single seconds
11 Fit interval flag UINT8
12-15 SV accuracy (URA) Single meters
Byte Bit Item Type Value Meaning
0 SV PRN number UINT8 1-32 PRN
1 0:2 slot number bit field 0 0 0 Not used
1 3:7 channel number bit field 0 0 0 0 Channel 1
0 0 0 1 Channel 2
0 0 1 0 Channel 3
0 0 1 1 Channel 4
0 1 0 0 Channel 5
0 1 0 1 Channel 6
0 1 1 0 Channel 7
0 1 1 1 Channel 8
1 0 0 0 Channel 9
1 0 0 1 Channel 10
1 0 1 0 Channel 11
1 0 1 1 Channel 12
Byte Item Type Units