Spectra Precision Epoch 25 L1, Руководство пользователя

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B
Troubleshooting
40
Epoch 25 L1/L2 GPS System User Guide
B.1
LED conditions
An LED that is flashing quickly indicates a condition that may require attention, and
an unlit LED indicates that no operation is occurring. The following table describes
some LED conditions, possible causes, and how to solve them. See also
LED flash
patterns, page 23 .
B.2
Receiver issues
The following table describes some possible receiver issues, possible causes, and how
to solve them.
Condition Possible cause Solution
The SV Tracking LED is
lit solidly and the
Logging/Memory LED
is flashing slowly. The receiver is in Monitor
mode, ready for new
firmware to be loaded or
new options to be added. Power the receiver off or on.
Load the latest version of the
firmware, which you can download
from
www.spectraprecision.com .
The SV Tracking LED is
not flashing. The receiver is tracking
fewer than four satellites. Wait until the SV Tracking LED is
flashing slowly.
The radio antenna cable
and GPS antenna cable are
mixed up. Make sure that the GPS antenna
cable is connected between the TNC
connector and the GPS antenna.
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 DB-9 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 the SV Tracking LED is
flashing slowly.
The receiver is not
responding. Receiver needs soft reset. Power down the receiver and power
back up.