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Copernicus GPS Receiver 123
TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP) A
Initialization Packets to Speed Start-up
If you are not supplying the receiver with battery power when main power is off, you
can still “warm-start” the receiver by sending the following sequence of commands
after the receiver has completed its internal initialization and has sent Packet 82.
Hot
start times can be achieved using packet 0x38-06 to upload the ephemeris. Only time
and position are necessary for the hot start since the almanac and ephemeris are
stored in flash. Position is also stored in flash which improves first fix accuracy.
Table A.3 Initialization Packets to Speed Start-up
Packets Output at Power-Up
The following table lists the messages output by the receiver at power-up. After
completing its self-diagnostics, the receiver automatically outputs a series of packets
which indicate the initial operating condition of the receiver. Messages are output as
listed in the table below. After Packet 82 is output, the sequence is complete and the
receiver is ready to accept commands.
Table A.4 Packets Output at Power-up
Input Byte
Description
0x2E Initial Time
0x38 Almanac (for each SV)
0x38 Ephemeris
0x38 Ionosphere Page
0x38 UTC Corrections
0x38 Almanac Health
0x2B Initial Position
Output ID Description Notes
0x45 software version --
0x46 receiver health --
0x4B machine code/status --
As chosen, default: 0x84,
0x56
position/velocity output As chosen, see
Table A.2.
0x41 GPS time
0x82 SBAS fix mode See command
0xBB to
enable/disable
SBAS