User`s guide

Performance Tests
40 Agilent 81560A, 81561A, 81566A, & 81567A Optical Attenuator Modules, First Edition
The procedures in this section test the optical performance of the
Agilent 8156xA Variable Optical Attenuator modules. The complete
specifications to which the instrument is tested are given in
“Specifications” on page 29.
All tests can be performed without access to the interior of the
instrument. The performance tests refer specifically to test using an
Agilent reference connector.