Troubleshooting base station setup and static measurement problems

SPS985/SPS986 GNSS smart antenna only.

This section describes some possible station setup and static measurement issues, possible causes, and how to solve them.

Trimble recommends that you use the Siteworks or SCS900 software to restart or configure base and rover receivers. The software sets up all radio and receiver operating parameters, and is the most likely route to a successful problem resolution once you have checked all connections, cables, and batteries.

The roving receiver is not receiving radio from the base station

Possible cause	Solution
The base station is not broadcasting.	See Base station is not broadcasting below.
Incorrect over-the-air baud rates between base station and rover.	Connect to the roving receiver's radio and make sure that it has the same setting as the base station receiver.
Mismatched channel or network number selection.	Match the base station and rover radio channels/network number and try again.
Incorrect port settings between the rover external radio and receiver.	If the radio is receiving data (the Radio LED is flashing) and the receiver is not receiving data, check the port settings of the receiver and radio using the Siteworks or SCS900 Site Controller software; match the settings and try again.
The radio antenna cable and GPS antenna cable are mixed up.	Make sure that the radio antenna cable (with the blue over-mold) is connected between the blue TNC connector marked RADIO and the radio antenna.

The base station is not broadcasting

Possible cause	Solution
Port settings between base receiver and external radio are incorrect. The GNSS smart antenna has the option for an integrated Tx radio that allows it to be used without an external radio at the base and rover location. The GNSS smart antenna can also be connected to an external high power radio in certain countries.	Use the Siteworks or SCS900 Site Controller software to connect to the radio through the receiver. If no connection is made, connect directly to the radio and change the port settings. Try to connect through the receiver again to ensure that they are communicating. The Siteworks and SCS900 software does not support direct connection to the external radio; it only allows configuration through the receiver.
Faulty cable between receiver and external radio.	Do one of the following: Try a different cable Examine the ports for missing pins Use a multimeter to check the pins
No power to radio.	If the radio has its own power supply, check the charge and connections.
No Bluetooth connections	Make sure that the radio and receiver are within Bluetooth range of each other and that the Bluetooth antennas are visible to each other.