Technical data

42 Post-Process GPS Surveying
GPS receiver does not track satellites
A satellite tracking LED on the front panel of the Z-Xtreme receiver displays the
number of healthy satellites supplying good data for data collection. This
information is also available through the field application software running on the
handheld computer. Refer to the receiver or application software documentation
for details on how to access this information. Using this feature, you find that the
receiver is not tracking any satellites. Follow the procedure below to determine the
cause of this problem.
1. Is the GPS receiver powered up?
To determine if the receiver is powered up, check the power LED on the front panel
of the receiver. If the LED is on (red or green), the receiver is on.
Receiver Is Not Powered Up
a. 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 show text.
Go to step b) if the problem is not yet resolved.
b. Check the power source.
The Z-Xtreme supports both internal and external power sources.
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.
If using external power, check to ensure the power cable is properly
connected to both the battery and the receiver.
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.
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 cable. If
available, try a different power cable. If the new cable works, the old cable is
malfunctioning. Call your local dealer or Ashtech customer support for
assistance.
Go to step c) if the problem is not yet resolved.
c. You may have a malfunctioning GPS receiver.
Call your local dealer or Ashtech customer support for assistance.
Receiver Is Powered Up
Go to step 2 below.
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