Agilent Technologies HP E5574A User Manual page 198

General
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Appendix D. Performance Test
General
[1] If 2 Optical Heads are part of the DUT the quantity for all options
changes to 2.
Setup and Performing the Performance Test
• The performance test includes only tests with HP 81521B #001
Optical Head.
• Perform the tests for both Head Inputs (Head Input A and Head
Input B).
• The set-up figures show the measurement set-ups for tests
with Head Input A.
• If a second HP 81521B #001 Head is part of your OLA
repeat tests "Test IV. Linearity and Accuracy" & "Test VII.
Noise" using this head and HP 8153A and tests "Test V.
PDL/PDG uncertainty (#020 only)" & "Test VI.
Repeatability PDL/PDG" using this head and OLA, Head
Input B.
• If your OLA has only one HP 81521B #001 Head repeat
tests "Test V. PDL/PDG uncertainty (#020 only)" & "Test
VI. Repeatability PDL/PDG" using this head and OLA,
Head Input B.
• Make sure that the cable connectors, lenses and detector
windows are clean. Refer to the cleaning procedure.
• Make sure that all equipment has warmed up.
• Make sure that all patchcords are fixed to the table—where
appropriate—so that they won't move during measurements.
• Settling time for laser when switched from 1310 nm to 1550 nm
or from 1550 nm to 1310 nm: 5 minutes.
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