Rover System Troubleshooting; Gps Receiver Does Not Track Satellites; Radio Not Receiving Data Transmitted By Base; Step 1. Is The Rover Radio Powered Up - ashtech Z-Xtreme System Manual

(iii). If the base radio begins to transmit data, there is a problem with the
base GPS receiver. Contact your local dealer or Ashtech customer
support for assistance.

Rover System Troubleshooting

The rover system of the ZX SuperStation has three basic functions, track satellites in
order to collect raw satellite data at it's position, receive base position satellite data
transmitted by the base system radio, and finally, combine the rover satellite data and
the base satellite data to compute a precise position of the rover location. The rover
system must be able to carry out all three of these primary functions in order for the
RTK system to work. Let's examine the recommended steps in troubleshooting a
problem in each of these three functions.

GPS Receiver Does Not Track Satellites

Tracking satellites is an important function of both the base and rover systems. The
process of troubleshooting this problem on the rover system is identical to that on the
base system. Refer to the base system troubleshooting section above for details.

Radio Not Receiving Data Transmitted By Base

The base GPS receiver by default is set to send data to the base radio once every
second. The base radio will transmit this data immediately upon receiving it. There-
fore, the rover radio should be receiving data from the base once every second. The
receive LED on the front panel of the rover radio, or in the case of an internal radio on
the front panel of the GPS receiver, will blink red each time a packet of data is
received. After examining this LED, you determine that the rover system is not
receiving data. Follow the outline below to troubleshoot this problem.

Step 1. Is the rover radio powered up?

When using a radio internal to the GPS receiver, there is no action required to power
up the radio other than to power up the GPS receiver. This automatically applies
power to the radio. If using an internal radio, go to step 2 below.
To determine if an external rover radio is powered up, check the power LED on the
front panel. If the LED is on (green or red, solid or flashing), the radio is on.
Radio not powered up
1. Turn on the radio.
78 Real-Time Kinematic Surveying