USER MANUAL 750000992/16
7-5
MTS
e
Display of WDM results
from 50 to 400 GHz by steps of 5 GHz, or
from 0.160 to 8.000 nm by steps of 0.001nm.
- number of channels.
The <Between A and B> key allows to have only between the
cursors the grid with the defined spacing .
AUTO The AUTO grid is lined up to the present channels whatever are
their interval. To get this grid the option «1st sweep» has to be
selected on the «Channel Detection» line. The Grid line and the
Auto option being selected, press the <Save Ref> key to take as
grid reference the location of the detected channels.
Alarms
The results whose standard deviation exceeds a chosen threshold may be
displayed in red in the table.
To define the alarm thresholds:
• select the Alarms line and press the <Set Alarms> key. The alarms selection
menu is displayed.
• Assign Ye s to the chosen alarm: the direction arrow keys "<" and ">" allow
you to choose the corresponding threshold value.
According to the chosen statistic, three alarms are possible on:
Delta L (or F): threshold from 0.01 to 4.01 nm (or from 1 to 500 GHz)
Delta P: threshold from 0.1 to 10.0 dB
Delta SNR: threshold from 0.1 to 10.0 dB
Display of WDM results
The results screen obtained by pressing the RESULTS button, presents zones from
the top to bottom displaying:
• the file name (if the result is stored in the memory).
• characteristics specific to WDM test: module name, resolution used (Res),
number of acquisitions used for the statitics (Acq), signal threshold (Th),
distance chosen for the S<->N ratio, fiber number (N:), date and time of
acquisition.
• the trace (see "Trace" on page 7-6).
• the results associated with the A and B cursors of the trace, the type of
channels displayed, the composite power and the total power.
• the results table (see "Table" on page 7-9).
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