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A-8 Lassen-SK8 Embedded GPS Module
Trimble Standard Interface Protocol
A.8 Timing Packets
If you are using the Lassen-SK8 as a timing system, you may need to implement the
following TSIP control commands.
A.9 Satellite Data Packets
The following packets contain a variety of GPS satellite data.
A.10 Background Packets
The receiver automatically outputs a set of packets that the user may want to monitor for
changes in receiver operations. These messages are output at the rates indicated in the
table below.
Table A-7. Timing Packet TSIP Control Commands
Input ID Description Output ID
0x21 get the current GPS time. 0x41
0xBB setup static mode if desired. 0xBB
0x38-05 request UTC parameters. 0x58-05
Table A-8. Satellite Date Packet Data I/O Descriptions
Input ID Description Output ID
0x27 request signal levels 0x47
0x28 request GPS system message 0x48
0x38 request/load satellite system data 0x58
0x39 set/request satellite disable or ignore health 0x59
0x3A/auto request last raw measurement 0x5A
0x3C request tracking status 0x5C
auto Synchronized Measurement measurement packet 0x6F
Table A-9. Background Packet Output Messages
Output ID Description Notes
0x41 GPS time If the receiver's GPS clock is set and the
receiver is not outputting positions, time is
output approximately every 5 seconds.
0x46, 0x4B receiver health messages Receiver health messages are output
every 5 seconds.
0x6D mode packets Mode packets are output every second.