Trimble ThunderBolt E GPS Disciplined Clock User Guide 17
Setting up and Running the ThunderBoltE 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 second s, 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 ThunderBoltE GPS por t 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
AppendixA, 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 1PPS. Thi s may be required to
compensate for a long cable run. Negative values advance the 1PPS and compensat e
for cable delay. The 10MHz and 1 PPS output will remain synchronized.
Note – The factory default is zero.