Referencing Your Power Meter To A Source - EXFO EPM-50 Guia Del Usuario

Referencing Your Power Meter to a Source

In reference mode, your unit displays the loss created by the fiber under test only,
since a reference value is subtracted from the measured power.
Note:
You must set a reference value separately for each wavelength.
To reference the power meter to a source manually:
1. Using the proper adapter, connect a light source (such as ELS-50) to the
detector port of your power meter.
Light
source
2. Activate the source at the desired wavelength.
3. Match the source and power meter wavelenghts using
Wavelength is displayed in the top left corner.
4. Hold down
stores the currently detected power as the new
reference power.
Reference power is displayed in the top right corner
(in dBm) and current loss reading is automatically
switched to dB.
5. Repeat the procedure for each wavelength you want to reference.
Note:
Once all desired wavelengths have been referenced, do not disconnect
the Reference Test Jumper from the source port until all measurements
have been done.
EPM-50/ELS-50
Reference
test jumper
for a few seconds. The power meter
Reference
test jumper
Bulkhead
connector
Adapter
Power
meter
.
9