Exfo IQS-12004B DWDM Passive Component Test System for Manual do Utilizador descarregar pdf (Página 96)

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101

Calibrating the DWDM Passive Component Test System

84 IQS-12004B

Performing Reference Measurements

Return Loss Zero Reference Measurement

The Return Loss Zero measurement provides a zero reflection reference to

the WRM return loss detector. This reference will be used to compensate

for internal WRM parasitic reflections as well as parasitic reflections

originating at the WRM output/launch fiber connector.

Note: A Return Loss Zero reference measurement is required each time the

system is turned on, and is recommended whenever there is a significant

change in environmental conditions.

To perform the Return Loss Zero reference measurement:

1. Clean the connectors and connect the modules as indicated on

the screen. For more information, see Maintenance on page 213 and

Connecting Optical Fibers on page 66.

2. Select Return Loss Zero in the IQS-12004B Reference window and

press OK.

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