Channel Detection Threshold; Display Of A Grid; Display Of Total Power Between Cursors - Viavi 8100 V2 Series User Manual

Chapter 8 Optical Spectrum Measurement
Trace display functions
Table: display of the table alone
Figure 144 OSA Results - Table

Channel detection threshold

On the trace, some peaks corresponding to noise could be mistaken for channels. It is
therefore necessary to fix a power threshold level: only peaks that exceed this threshold
will be considered as channels and included in the table of results.
To display or modify this threshold, press the S
Modify the value to position it on

Display of a grid

The display window of the trace can include a grid to facilitate verification of the position
of the channels. Several grids are possible (see the chapter

Display of total power between cursors

To display on the trace the total power between the two cursors A and B:
1 Place the cursors at the desired positions.
2 Press the
1.The "Auto" value is obtained by continuing to reduce the value of the threshold
below the minimum value of -79.9 dBm
266
Auto
Advanced key, then
User Manual
key, then select
ETUP
1
or fix a threshold value.
Total Power A<--->B.
78000010220 Rev. 024
Signal threshold.
"Grid" on page 256)