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Trimble ThunderBolt E GPS Disciplined Clock User Guide 17
Setting up and Running the ThunderBolt E 2
8. The ThunderBolt E automatically begins its self-survey. When this is complete
and the receiver achieves a position fix, the following information appears in the
software:
– position
– time
– satellites tracked
– GPS receiver status
Note – The receiver sends a health report every few seconds, even if satellites are not being
tracked.
Data fields
If the Trimble GPS Monitor program displays a question mark (?) in a data field, the
receiver has not reported a status for this field. If the question mark stays in place, the
GPS module may not be communicating with the computer. Check the interface cable
connections and verify that the serial port selection and settings are set to 9600 baud,
no parity, 8-bit, and 1 stop/start bit.
If the communication fails, call the Trimble Technical Assistance Center (TAC) at
1 (800) 767-4822.
Receiver COM port settings
Packet 0xBC sets the ThunderBolt E GPS port characteristics. To change the receiver
port and then set or request the Input/Output baud rate, data bits, parity, stop bits, and
flow control parameters, select Configure / Receiver Configuration / Port Configuration
dialog.
TSIP
The Trimble Standard Interface Protocol (TSIP) consists of command packets and
report packets. The basic features that are described here include some of the more
commonly used commands and reports. For a complete description of TSIP, see
Appendix A, Trimble Standard Interface Protocol
Note – You do not need the packet number when you use the Windows Control Program.
Cable delay compensation
Packet 0x8E-4A enables you to delay or advance the 1 PPS. This may be required to
compensate for a long cable run. Negative values advance the 1 PPS and compensate
for cable delay. The 10 MHz and 1 PPS output will remain synchronized.
Note – The factory default is zero.