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Trimble ThunderBolt E GPS Disciplined Clock User Guide 35
Trimble Standard Interface Protocol A
Customizing operations parameters
Thunderbolt E provides a number of user-configurable parameters that enables the
user to customize its operation. These parameters are stored in NVS memory to be
retained during loss of power and through resets. At reset or power up, ThunderBolt E
configures itself based on the parameters stored in NVS. The user can change the
values of these parameters to achieve the desired operation using a variety of TSIP
packets. ThunderBolt E configures itself based upon the new parameters immediately,
but the new parameter is not automatically saved to NVS. The user must direct
ThunderBolt E to save the parameters to NVS. This is done by sending packet 0x8E-4C
with the ID of the segment containing the changed parameter. Users can also direct
ThunderBolt E to set the parameter values for a specified segment to their factory
defaults by sending packet 0x8E-45.
To customize ThunderBolt E output:
1. Set up ThunderBolt E using TSIP commands until the required operation is
achieved.
2. Use command 0x8E-4C to store the settings in non-volatile memory (except for
position, which is saved or deleted with packet 0x8E-A6.)
These settings will control ThunderBolt E operations whenever it is cold-reset or
power cycled. The following tables illustrate how the user configurable data is
mapped.
Factory default settings (segment 3)
0x83 Position XYZ (ECEF), double
precision
0x35 and
0x8E-A5 (bit 6)
0x37 When a position fix is
computed
0x84 Position LLA, double precision 0x35 and
0x8E-A5 (bit 6)
0x37 When a position fix is
computed
0x8F-AB Primary timing packet 0x8E-A5 (bit 0) 0x8E-AB Once per second
0x8F-AC Secondary timing packet 0x8E-A5 (bit 2) 0x8E-AC Once per second
Parameter Factory Default Set Request Report
Receiver mode 4 (Full Position 3D) 0xBB 0xBB 0xBB
Dynamics code 1 (Land) 0xBB 0xBB 0xBB
Elevation mask 0.175 radians (10 deg) 0xBB 0xBB 0xBB
Signal level mask 4 (AMU) 0xBB 0xBB 0xBB
PDOP mask 12 0xBB 0xBB 0xBB
PDOP switch 6 0xBB 0xBB 0xBB
Foliage mode 1 (Sometimes) 0xBB 0xBB 0xBB
Broadcast
Packet ID
Description Masking
Packet ID
Request
Packet ID
When Sent