Thales Z-Max Operation And Application Manual page 284

Step 2. Is the UHF Antenna Module connected to the rover radio?
Although it is possible for the rover radio to receive transmissions from the base radio
without an antenna, the range will be very limited. The rover radio antenna must be
connected to the rover radio for proper operation.
Antenna not connected
Connect the UHF Antenna Module to the GPS Receiver Module. Ensure that the
connection to the GPS Receiver Module is secure and the threaded collar that
secures the module is snug and not cross-threaded.
Antenna is connected
Ensure the connection to the Communication Module radio is secure and the
latch is completely closed.
Go to step 3 if the problem is not yet resolved.
Step 3. Is the rover radio set to the same frequency as the base?
The rover radio must be set to the same frequency as the base radio in order for the
rover to receive transmissions from the base. Use the field application software
running on the handheld computer to determine on which frequency the base and
rover radios are set.
Radio not set to same frequency as base.
Use the field application software or the front panel display to set the frequency of
the rover radio to match the frequency of the base radio.
Radio set to same frequency as base
Go to step 4 below.
Step 4. Is line-of-sight between base and rover antennae obstructed?
Although UHF radios are fairly robust, an excessive amount of obstructions can block
out the signal.
Line of sight not obstructed
Go to step 5 below.
Line of sight obstructed
1. Move to a less obstructed location. In order to test if the system is functioning
properly, move to a location which does not have an obstructed view between the
base and rover radio antennae.
Troubleshooting 261