EXFO IQS-5320, User Manual

Page: 33 / 177

Setting Up Your Multi-Wavelength Meter
24
IQS-5320
Creating Channels and Channel Lists
Creating Channels and Channel Lists
Testing DWDM systems involves testing numerous channels on the same
fiber. The MWM test application allows you to define these channels one at
a time or to quickly generate them from current data. You can also rapidly
create a list of equally spaced channels.
Most of these channels are related to the standard International
Telecommunication Union (ITU) wavelength grid, for which standard ITU
channel files are provided with your module. Other channels are defined
specifically for components or networks. These channel definitions are
necessary to allow drift and alarm tracking.
Once a channel list is created, you can modify it any way you want.
In WDM mode, it is not necessary to define reference channels before
taking measurements. For more information about testing in WDM mode,
see
Taking Measurements in WDM Mode
on page 49.
In Drift mode, you must define reference channels to view measurement
results. This condition has the following effects on the results list:
➤
If a detected peak falls within a defined channel, it will be monitored
and displayed in the results list; otherwise, it is not displayed.
➤
If two or more peaks fall within a channel, only the strongest peak is
shown.
For more information about displaying Drift mode results, see Performing
Drift Mode Measurements
on page 61.
To define the reference channels, you must specify the different
parameters in the channel list column titles in the
Channel
tab. The
content of each column is described in the following table.
Parameter Description
Ch Channel number in the list.
ID Channel name. Must be eight characters or less.
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