8163A/B, 8164A/B, 8166A/B User’s Guide 183
Return Loss Measurement 7
Calibration Measurements
Before measuring the reflection factor of a device under test (DUT), it is
important to take calibration measurements as described in Calibrating
the Return Loss Module on page 188. These calibrations eliminate
wavelength dependencies, coupler directivity, insertion losses,
backscattering and other non-ideal characteristics of the system.
The Return Loss Application described later in the manual, available on the
8163B and 8163A, provides a convenient guide through the calibration
and measurement process.
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