Ramp-Sweep With An Hp 8510B/C - HP 85097A User Manual

Operating an ECal System
Calibrations

Ramp-Sweep With an HP 8510B/C

When using HP 8510 series VNAs, calibrations cannot be performed in
the ramp-sweep mode. If ramp sweep is required during measurements,
calibrate the system in step mode, then perform measurements in ramp
sweep mode. When switching from step to ramp-sweep mode, the
following message will be displayed.
CAUTION: CORRECTION MAY BE INVALID
To determine whether the mode change invalidates the calibration,
compare the DUT response in step verses its response in ramp mode. In
general, ramp-sweep is only recommended for tuning purposes; for
accurate device measurements, use step-sweep mode.
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