Viavi 8100 V2 Series User Manual page 349

NOTE
At the end of an acquisition in permanent mode, it is possible to create a grid
on the basis of the channels detected. To do this, press the key
in the S
ETUP
The new Grid can be shown as table by pressing View Grid in the Setup
menu.
Min. Channel spacing
Defines the minimum spacing of two adjacent optical channels in the system.
This parameter is also used to set the range for integration to measure the accurate total
signal power of an optical channel. The window for channel power integration will be ±1/
2 the min. channel spacing setting left and right to the channel center frequency.
The measurement result will be displayed in the WDM table as 'Level' in dBm.
Min. Channel elevation
Defines the minimum elevation of two adjacent peaks from the valley between them
which is required to recognize independent channels. Peaks which are not separated by
a valley deeper than the min.channel elevation are considered as part of the same
optical channel.
This example shows two signals, the left having only one peak larger than the selected
Min.channel elevation, the right one with two peaks.
The two peaks of the right one are separated by a valley, but their elevation from that
valley is smaller than the Min.channel elevation. Therefore they are not treated as inde-
pendent signals
Select Auto to define the value automatically or select Manual to enter a specific value
for the parameter.
Chapter 9 OSCA-710 Optical Spectrum Measurement
menu.
User Manual
OSCA optical spectrum analyzer Setup
78000010220 Rev. 024
Adopt Grid
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