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A-38 Acutime 2000 Synchronization Kit User Guide
Trimble Standard Interface Protocol
A
0x3A Command Packet 3A
Last Raw Measurement Request
This packet requests the most recent raw measurement data for one
specified satellite. The GPS receiver returns packet 5A if data is
available.
0x3B Command Packet 3B
Satellite Ephemeris Status Request
This packet requests the current status of satellite ephemeris data. The
GPS receiver returns packet 5B if data is available.
Table A-25 Command Packet 3A
Byte Item Type Value Meaning
1 Satellite # Byte 0
1-32
All satellites in the current
tracking set
Desired satellite
Table A-26 Command Packet 3B
Byte Item Type Value Meaning
1 Satellite # Byte 0
1-32
All satellites for which ephemeris
data is available
Desired satellite