User`s guide

Performance Test Instructions Performance Tests
Agilent 81560A, 81561A, 81566A, & 81567A Optical Attenuator Modules, First Edition 43
Performance Test Instructions
The performance tests given in this section includes the Attenuation
Repeatability Test. Perform each step in the order given, using the
corresponding test equipment.
Operate an Agilent 81566A and 81567A Attenuator module as an
attenuator and switch the power control loop off if not otherwise
mentioned.
NOTE: Make sure that all optical connections of the test setup given in the
procedure are dry and clean. DO NOT USE INDEX MATCHING OIL.
Make sure that all optical connectors are undamaged.
For cleaning, use the cleaning instructions given in “Cleaning
Information” on page 65.
Make sure that all optical cables of the test setup are fixed to the table
so that they won't move during measurements.
Movement of the fibers during the test procedures and the quality of
optical connectors affect the result of power measurements.
The environmental conditions (temperature and relative humidity)
must remain constant during the test.