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32
Any changes in the specifications due to manufacturing changes,
design, or traceability to the National Institute of Standards and
Technology (NIST), will be covered in a manual change supplement, or
revised manual. Such specifications supercede any that were
previously published.
Performance Test
The performance test given in this section includes the Accuracy Test,
the Linearity Test, the Return Loss Test and the Noise Test. The
performance test for the Agilent 81633B, 81634B and 81637B also
includes – as optional tests – the Relative Polarization Uncertainty
and the Relative Interference Uncertainty Test. Perform each step in
the order given, using the corresponding test equipment.
N O TE
Make sure that all optical connections are dry and clean. DO NOT USE
INDEX MATCHING OIL. For cleaning, use the cleaning instructions
given in "Cleaning Instructions" on page 71.
Fix the optical cables that connect the laser source and Power Meter to
the Agilent 8156A Attenuator. This ensures minimum cable movement
during the tests.
Accuracy Test
N O TE
The linearity test must only be performed at either 1310 nm or 1550
nm. The accuracy test must be performed in the -20 dBm range at
10 µW at both 1310 nm and 1550 nm.
Test Setup
1 Make sure that cable connector, detectors and adapters are clean.
2 Connect the equipment as shown in Figure 3. Ensure that the cables
to and from the attenuator are fixed on the table and that both the
optical head and the DUT are close together so that minimum cable
movement is required when connecting the cable to the head or to
the DUT.
Agilent 81632B/3B/4B/6B/7B Power Sensor Modules and Agilent 81635A Dual Power
Sensor Module, First Edition
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