EXFO FPM-600 Power Meter - Manual (Page 62)

Troubleshooting
56 FPM/FLS/FOT-600
Reverting Unit to Factory Settings
Reverting Unit to Factory Settings
You can revert most parameters on your unit to their factory state. When
you perform this operation, you will lose all customized parameters.
To revert unit to factory settings:
1. Turn off your unit.
2. While holding down , press . When your unit beeps, release
.
Unable to change power
meter dB unit or reference
power.
OR
Changed unit or reference
value are replaced by other
values after a while.
Unit receiving REF
signal from source. See
Sending Source Power
Value with Signal on
page 36.
Wait a few seconds
until power value is
received, then retry.
Many beeps, unstable optical
power and blinking Auto (or
modulation) indicator.
Power too low to
recognize Auto mode
(or modulation).
Increase source
power or switch
source to CW.
Reference power different
than source output power.
Received power
outside detector’s
range.
Change source output
power.
Unit displays FULL even after
you deleted a few values.
You must delete all
values from the unit to
free memory.
Delete all values as
explained in Saving,
Recalling and
Deleting Data on
page 40.
Going from the first value to
the last value in recalled data
is very slow.
Too many values saved
in memory.
Delete all data from
the unit.
Problem Possible Cause Solution