Base System Troubleshooting; Gps Receiver Does Not Track Satellites; Step 1. Is The Gps Receiver Powered Up - ashtech Z-Xtreme System Manual

Base System Troubleshooting

The base system of the ZX SuperStation has two basic functions, track satellites in
order to collect raw satellite data at its position, and transmit this data to any rover
system within range of its radio. The inability to perform either one of these functions
renders the base system useless. Therefore, the path to troubleshooting the base
system should begin with these two items.

GPS Receiver Does Not Track Satellites

One function of the display on the front panel of the Z-Xtreme receiver is to inform the
user of the number of healthy satellites being tracked and used by the receiver. This
information is also available through the field application software running on the hand-
held computer. Refer to the receiver or application software for details on how to
access this information. Using this feature, you find that the receiver is not tracking
satellites. Follow the outline below to determine the cause of this problem.

Step 1. Is the GPS receiver powered up?

To determine if the receiver is powered up, examine the power LED on the front panel
of the receiver. If the LED is on (red or green), the receiver is on.
Receiver not powered up
1. Turn on the receiver.
Press and hold the power switch on the left side of the Z-Xtreme front panel.
The button must be held for a few seconds since there is a delay in power on.
You will see the power LED turn on and the display will begin to show text.
Go to step 2 if the receiver does not power up.
2. Check the power source.
The Z-Xtreme supports both internal and external power sources.
a. If using internal power, remove the battery and press the power level
indicator button. If low, replace battery with a good one and turn on the
receiver.
b. If using external power, check to ensure the power cable is properly
connected to both the battery and the receiver.
(i). If the cable is properly connected, check the power level of the
external power source. If low, replace the battery with a good one
and turn on the receiver.
(ii). If external power source is good and the cable is connected to both
the receiver and the power source, there may be a problem with the
72 Real-Time Kinematic Surveying