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HP 8517B S-Parameter Test Set Manual
3-8
Measurement Calibration
After selecting the active test set, complete the system calibration procedure
as usual. When you select a different test set, make sure that you recall the
cal set that applies to that test set.
NOTE
Since the cal-set limited instrument state does not include the number of the
active test set, a cal set which does not apply to the current test set can be
turned on without displaying the HP 8510C caution messages. However, this
causes errors in the data displayed because incorrect error coefficients are
applied to the measured data.
For convenience, store a hardware-state file and an instrument-state file for
each combination of test set to cal set. You may also store your hardware
state file on a tape or disk for future use.
To change the configuration, recall the appropriate hardware state file. The
hardware state file:
• sets the address of test set
• issues the RF switch command, then
• recalls the appropriate instrument state file which
• recalls the cal set