B Troubleshooting
42 EPOCH 35 GNSS System User Guide
B.1 Receiver issues
The following table describes some possible receiver issues, possible causes, and how
to solve them.
Issue Possible cause Solution
The receiver does
not power up.
External power too low. Check the charge on the external battery, and check
the fuse if applicable. Replace the battery if necessary.
Internal power too low. Check the charge on the internal batteries.
External power not properly
connected.
Check that the 7-pin LEMO connection is seated
properly.
Check for broken or bent pins in the connector.
Faulty power cable. Try a different cable.
Check pinouts with multimeter to ensure internal
wiring is intact.
Receiver does not
log data.
The receiver is tracking
fewer than four satellites.
Wait until at least 4 satellites are tracked.
The receiver is not
responding.
Receiver needs soft reset. Power down the receiver and power back up.
Reference receiver is
not broadcasting.
Faulty cable between
receiver and radio.
Try a different cable.
Examine the ports for missing pins.
Use a multimeter to check pinouts.
No power to radio. If the radio has its own power supply, check the
charge and connections.
Roving receiver is
not receiving radio.
Reference receiver is not
broadcasting.
Check radio channel settings.
Incorrect radio protocol set. Ensure that the radio protocol set on the rover
matches the base.
If the radio light flashes, but
there are no float or fixed
positions.
Check to ensure that the same correction format that
is set on the base is used on the rover.
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