Osnr - Viavi 8100 V2 Series User Manual

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 independent sig-nals
Select Auto to define the value automatically or select Manual to enter a
specific value for the parameter.

OSNR

To modify these parameters, go to the
appears proposing the following options:
OSNR method
1.Attention: all modification of these parameters has immediate repercussions on
the trace and entails the loss of the measurement statistics.
(only available in OSNR mode)
Side of the peak where the point of reference for noise
measurement is taken (left, right, average left and
right, worst case of left and right).
User Manual
Chapter 8 Optical Spectrum Measurement
OSA optical spectrum analyzer Setup
line. A sub-menu then
OSNR
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