REFERENCE MANUAL - FTP Directory Listing - Trimble

INTERFACE CHARACTERISTICS 3
Enabling A-GPS with TSIP
1. Allow the receiver to run long enough to collect a current almanac.
Note – It takes 12,5 minutes of uninterrupted Copernicus operation to collect
almanac from the satellites.
2. Use packet 0 x 26 to request the health of the receiver. The response packets
0x46 and 0x4B indicate when the almanac is complete and current.
3. Use packet 0x38 to request the almanac and the ephemeris. The receiver
responds with packet 0 x 58.
4. Use packet 0 x 21 to request time from the receiver. The receiver responds with
packet 0x 41. This data can be used to set your own off-board clock.
5. Use packets 0x42, 0x4A, 0x83 0r 0x84 to request a position from the receiver.
To upload this information back to the receiver, follow this procedures in the
specified order:
1. Upload the time using TSIP packet 0x2E. Wait for upload confirmation report
packet 0x41.
2. Upload position using TSIP packet 0x31 or 0x32. No confirmation report
packet available.
3. Upload the ephemeris using TSIP packet 0x38. Wait for the upload
confirmation report TSIP packet 0x58.
Note – See Appendix A for details on the TSIP protocol.
Copernicus GPS Receiver 51