FS FOPM-201 Guide De Démarrage Rapide page 11

directly. In this mode, the LED indicators will not light. The results are displayed in
2 units: dB and dBm, using button
Unit dBm is to display the actual power.
Unit dB is to display a power value relative to a reference value. In this mode,
reference value needs to be preset correctly.
(2) P/F Test Mode
P/F test mode means the measured light power comparing to a preset threshold
value to determine if the measured light power meets user's requirement or not.
LCD will display the optical power and current state. The LED indicators below the
LCD display will also change color to match the current state of measured light.
This test mode is very useful in some special cases required. See Fig. 2.
10
to switch. See Fig. 1.
dBm/dB
10-03-03 11: 43: 15
1.2
1310nm
ONU
-4.5
1490nm
OLT
1550nm
-15.0
VIDEO
Fig. 1 Normal Test Mode Menu (dB)
10-03-03 11: 43: 15
1.2
1310nm
ONU
-4.5
1490nm
OLT
1550nm
-15.0
VIDEO
Fig. 2 P/F Test Mode Menu
dB
dB
dB
Auto off
dBm
Pass
dBm
Warning
dBm
Fail
Auto off