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Signal threshold
Splitter
compensation
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 softkey Adopt Grid
Threshold for detection of channels (see
on page 26).
Auto –
–
Manual –
–
NOTE
Modification of the parameters
threshold will only modify the results if the WDM module present is
the one that was used for the acquisition.
When the measurement is accessed by a splitter, it is possible to
compensate for the loss introduced by this element and to display the
value measured before or after it.
Go to the Splitter compensation
the following options:
Value1 Yes: activation of compensation and choice of its value
using the keys
1 to 30 dB (by increments of 1) or 1 to 99% (by
increments of 0.1%).
Unit Choice of compensation in dB or as a percentage of
the value measured.
For example, with a 10 dB splitter, the results will be
augmented by 10 dB. The trace will be offset upwards
by 10 dB. A channel measured at -30 dBm will be
displayed -20 dBm.
MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
Chapter 1 Optical Spectrum Measurement
S
in the menu.
ETUP
The threshold is determined automatically.
To set to Auto: set threshold to -55 dBm.
Editable from -54.9 to +10 dBm.
To modify values: use direction keys or
Number.
Channel selection
line to display a sub-menu proposing
and
Configuration
"Channel detection threshold"
Edit
and Signal
: or the numeric keypad : from
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