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Trimble ThunderBolt E GPS Disciplined Clock User Guide 37
Trimble Standard Interface Protocol A
Self-survey (segment 8)
Oscillator disciplining (segment 9)
Packets output at power-up
After completing its self-diagnostics, ThunderBolt E automatically outputs packet
0x45 (Software version),
Command packets: User to ThunderBolt E
The following table summarizes the packets that can be sent to the ThunderBolt E by
the user:
Parameter Factory Default Set Request Report
Self-survey enable 1 (enabled) 0x8E-A9 0x8E-A9 0x8E-A9
Position save flag 1 (save) 0x8E-A9 0x8E-A9 0x8E-A9
Self-survey count 2000 (fixes) 0x8E-A9 0x8E-A9 0x8E-A9
Parameter Factory Default Set Request Report
Time Constant 10.0 seconds 0x8E-A8 0x8E-A8 0x8E-A8
Loop Damping 1.0 0x8E-A8 0x8E-A8 0x8E-A8
Ko 8.83 (Hz/volt) 0x8E-A8 0x8E-A8 0x8E-A8
Minimum control
voltage
0.0 (volts) 0x8E-A8 0x8E-A8 0x8E-A8
Maximum control
voltage
4.0 (volts) 0x8E-A8 0x8E-A8 0x8E-A8
Initial DAC voltage 2.0 (volts) 0x8E-A8 0x8E-A8 0x8E-A8
Recovery mode jam
sync threshold
300.0 (ns) 0x8E-A8 0x8E-A8 0x8E-A8
Recovery mode
maximum frequency
offset
50.0 (ppb) 0x8E-A8 0x8E-A8 0x8E-A8
Input ID Packet Description Output ID
0x1C Firmware/Hardware versions 0x1C
0x1E Initiate cold, warm, or factory reset 0x45 (after reset)
0x1F Request software version 0x45
0x24 Request GPS satellite selection 0x6D
0x25 Initiate hot reset 0x45 (after reset)
0x26 Request receiver health 0x46, 0x4B
0x27 Request signal levels 0x47
0x29 Request Almanac Health 0x49
0x31 Set accurate position (XYZ ECEF) --
0x32 Set accurate position (Lat, Long, Alt) --