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EXFO PM-1600 High-Speed Power Meter User Manual

Page 65

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High-Speed Power Meter

55

7

Performing Typical Tests with

Your PM-1600

To make accurate, meaningful, and repeatable power measurements, it is
important to consider the following points:

Connectors, fiber ends, ports, and detectors should be clean at all
times.

A null measurement should be performed prior to each user session or
whenever there is a significant change in ambient temperature. To
perform a null measurement, see Nulling Electrical Offsets on page 11.

The optical source should be stable.

Appropriate test jumpers, connectors, and adapters must be used.

Once a reference has been taken, ensure that the setup remains
stable. To take a reference, see Measuring Relative Power on page 16.

Since optical losses vary according to the launch, receive conditions,
and fiber type, controlling these conditions with mode filters and
strippers is essential.

High-Speed Power Meter

55

7

Performing Typical Tests with

Your PM-1600

To make accurate, meaningful, and repeatable power measurements, it is
important to consider the following points:

Connectors, fiber ends, ports, and detectors should be clean at all
times.

A null measurement should be performed prior to each user session or
whenever there is a significant change in ambient temperature. To
perform a null measurement, see Nulling Electrical Offsets on page 11.

The optical source should be stable.

Appropriate test jumpers, connectors, and adapters must be used.

Once a reference has been taken, ensure that the setup remains
stable. To take a reference, see Measuring Relative Power on page 16.

Since optical losses vary according to the launch, receive conditions,
and fiber type, controlling these conditions with mode filters and
strippers is essential.