FX80 / FX81 PON Optical Power Meters User Manual
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6.2.1 Setting ZERO Level
Set the ZERO level with the dust caps closed before first using the FX80/81
for PON power measurements.
It is recommended to set the ZERO level prior
to each new batch of measurements, or after measurement conditions have
changed
.
Do NOT zero the power meter with the light source transmitting
into the OPM port, or the device may stop reading values or show display
random or inaccurate values.
To set the ZERO level:
1. Press the
|MODE|
button to enter the required measurement mode (PON Burst/PON
or PON CW).
2. Press
|F2| (ZERO)
. The ZERO notification will display briefly on screen.
Setting the ZERO level, FX80/FX81
The FX80/81 is now ready for measurements.
6.2.2 Pass/Fail Thresholds
In addition to measuring the downstream and upstream signal levels, the FX80/FX81 PON can
also be configured to provide Pass/Fail (P/F) notifications for each wavelength.
Thresholds Definition
If the threshold value set for a wavelength in the Pass/Fail submenu is greater than or equal to
the current power reading for that wavelength, a
FAIL
reading will be displayed.
