14
Troubleshooting
Symptoms
Possible Cause
Corrective Action
No operation, all
indicators are off.
Power switch is off or
the DC power source
is inactive
Turn on power switches to both units
Verify that the external power supply
is delivering13.8 and 24 VDC.
Internal LED off
Battery is depleted
and the power switch
is off
Turn on power switches to both units
Recharge the battery
Internal LED red
External power loss or
depletion of the
internal reserve
battery
Verify external power. The LED
Illuminates green after 30 minutes of
use with the AC power adapter. If the
light does not turn green, replace the
battery
No operation,
Status LED red,
fiber 1 LED and
fiber 2 LED
alternately
flashing
Optical
communication failure
or power to the TX is
off
Verify the following:
• TX power switch is in the on
position and the power indicator is
illuminated.
• Fibers are not broken/disconnected.
• Fiber end tips are clean.
• Optical connectors are properly
mated.
• Link loss budget has not been
exceeded:
The measured optical power at the RX
unit should be > - 21 dBm.
Internal reserve
battery fails
quickly
Reserve battery is not
charged or has failed
Connect to the 13.8 to 24VDC power
source for 16 hours. Replace battery if
charging is unsuccessful
System failure
when external
power is removed
Reserve battery is
dead or disconnected
Check the battery connection. If okay,
replace the battery
RX alarm sounds.
Power LEDs
green
Status LED green
Fiber 1 or Fiber 2
illuminated LED
has switched to
the other fiber
Failure of one of the
redundant optical
paths.
If only one fiber is
used, this may also
indicate intermittent
optical communication
Use an optical power meter to verify
that both transmitter optical ports are
functioning; measured optical power
should be approximately - 6 dBm.
Check for bad fibers or optical splices.
Operation may be restored to the
original fiber after repair by pressing
the Select switch
Table 3: Troubleshooting guide
