EXFO FPM-600 Power Meter - Manual (Page 37)

Measuring Power or Loss (FPM-600 and FOT-600)
Power Meter/Light Source/Optical Loss Test Set 31
Setting Pass/Fail Thresholds
Setting Pass/Fail Thresholds
You can define thresholds to specify acceptable power (dBm) or loss (dB)
values for each wavelength. Thresholds are often supplied by system
manufacturers and depend on the system deployed.
When a threshold is activated, the PASS/FAIL
LED is turned on. If it is green, the threshold
succeeded, if the PASS/FAIL LED is red, the
threshold failed.
To set pass/fail thresholds:
1. From normal operating mode, press
repeatedly until you reach PM.
2. Press to access the first submenu, then
press repeatedly until you reach the P/F
menu.
3. Press to switch between power (dBm)
and loss (dB) values.
4. Press to switch between available wavelengths. An asterisk (*)
appears beside activated thresholds. If no threshold is set for a
wavelength, the unit indicates “----”.
5. Press to activate/deactivate the displayed threshold. The
PASS/FAIL LED will light (green or red) when you return to normal
mode.