EXFO EPM-500 Power Meter - Manual (Page 36)

Troubleshooting 31
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 .
Error Codes and Descriptions
³
ER: error code displayed until you press a key.
³
WR: warning code displayed for 3 seconds, then unit returns to normal.
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 21.
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.
Error
Code
Description Solution
LIGH Light detected while nulling offsets.
Nulling is not performed. Correctly place protective cap on
detector port, then retry.
FULL Storage memory full. Delete data.
EMPt Storage memory empty:
³
You pressed Recall but no data
was saved.
³
Last saved data deleted.
³
All data deleted.
Add data.
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Calibration errors. Contact EXFO.
18/52 Incompatible wavelengths or
power too low in PREF on EOT-500. Match source and power meter
wavelengths or increase source
power.
Problem Possible Cause Solution