10-4
IM AQ1200-01EN
10.2 Setting PON System Optical Power Measurement Conditions and Holding the Display
Threshold Value
For each wavelength, you can set upper and lower threshold values and determine whether or not the
measured values fall within them.
• The range for the upper and lower threshold values is –80 to 40 dBm. You must set the values so
that the upper threshold value is greater than the lower threshold value.
• When a measured value is within the upper and lower thresholds, its bar graph is green. “PASS”
appears in the measured value area.
• When a measured value exceeds the upper threshold or falls below the lower threshold, its bar
graph is red. “FAIL” appears in the measured value area.
Holding the Measured Value Display
When you press the HOLD soft key, the updating of the measured values and bar graph is held. The
values at the time that you pressed the HOLD soft key remain displayed. To release the hold on the
display, press the HOLD soft key again.
Not updated
The display is being held.
