Osnr; Splitter Compensation - Viavi 8100 V2 Series User Manual

Chapter 9 OSCA-710 Optical Spectrum Measurement
OSCA optical spectrum analyzer Setup

OSNR

To modify these parameters, go to the OSNR line. A sub-menu then appears proposing
the following options:
OSNR method
S<->N Distance
Noise Acq. Bandwidth
OSNR meas.type: S / N

Splitter compensation

When the measurement is made after a tap coupler (also known as a splitter), it is
possible to compensate for the loss introduced by this element and to display the value
measured before or after it.
The following options are available:
1
Value
1.Attention: all modification of these parameters has immediate repercussions on
the trace and entails the loss of the measurement statistics.
314
(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).
(only available in OSNR mode)
Distance between the peak of the channel and the point of
reference for the noise.
Auto: distance determined according to spacing of channels.
Manual: an additional line Manual value opens. Go down and modify the
value with < > or click on the value and enter a new one in the keypad that
opens
Pre-defined: select 25 GHz (0.2 nm), 50 GHz (0.4 nm),100 GHz (0.8 nm)
from the peak.
Reference bandwidth used for the acquisition of noise:
Standard 0.1 nm
With the <> keys you can select other values between 0.05 nm and 1.0 nm.
S/N: the integrated power in the channel minus the noise is considered as
signal
Yes: activation of compensation and choice of its value using
the keys
increments of 1) or 1 to 99% (by increments of 0.1%).
User Manual
and : or the numeric keypad: from 1 to 30 dB (by
78000010220 Rev. 024
1