EXFO FPM-300 Power Meter - Manual (Page 17)

FPM-300/FLS-300/FOT-300 12
To reference the power meter to a source manually:
1. Using the proper adapter, connect a light source (such as FLS-300 or FOT-300)
to the detector port of your power meter.
2. Activate the source at the desired wavelength.
3. Match the source and power meter wavelengths:

If the source emits an auto-wavelength signal
(see Automatically Detecting Wavelength on
page 15), the power meter automatically
matches the source wavelength.
4. Hold down for a few seconds. The power
meter 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: When using dB units, press
(power meter)
to display the current
wavelength for a few seconds. To change this wavelength, press
again while it is displayed.
Note: Once all desired wavelengths have been referenced, do not disconnect
the Reference Test Jumper from the source port.
Light
source
Power
meter
Adapter Reference
test jumper
Reference
test jumper
Bulkhead
connector
REF

