R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 446
dialog was enabled when the last calibration for the active channel was successfully completed.
Additional conditions for repeating a calibration
Changing the channel settings can cause incompatibilities between the current instrument state and the
previous calibration. In particular the following conditions must be met:
The configuration of all ports needed must be correct (see Select Connector – Physical Port
Number #).
The Sweep Type must be unchanged.
If incompatible settings occur the analyzer displays an error message and does not repeat the calibration.
Recall Last Cal Set
Loads and activates the setup for which the last calibration was performed. If the last calibrated setup is
already active, nothing is changed.
The calibrated setups are automatically stored in the C:\Program Files\Rohde&Schwarz\Network
Analyzer\Calibration\RecallSets directory. A message box pops up if the directory is empty, e.g. because
no calibration was performed yet.
Correction Off
Activates or deactivates the system error correction in the active channel. Correction Off is active only if a
valid system error correction is assigned to the active channel; see Cal State in the Calibration Manager.
A red label Cal Off ! appears behind the trace list if the system error correction is switched off; see
also Calibration Overview.
Correction for S-parameters and wave quantities
"Arbitrary" S-parameters are S-parameters for a- and b-waves at different frequencies, e.g. for scalar
mixer measurements (see S-Parameters in Frequency Conversion Measurements). For full consistency,
these S-parameters require a power calibration in combination with the system error correction; an
additional enhanced wave correction is recommended. To account for the extended calibration
requirements of arbitrary S-parameters, Correction Off activates or deactivates both the system error
correction and the power calibration of the active channel. The Power Correction Off state is ignored. If no
user system error correction or power calibration is available, the factory calibrations are used.
The calibration state label (Cal Off ! or Cal) for an arbitrary S-parameter trace indicates whether or not
Correction Off is active; it does not distinguish the Enhanced Wave Corr state. This is in contrast to the
calibration state label for wave quantities and ratios; see Enhanced Wave Correction.
[:SENSe<Ch>]:CORRection:STATe ON | OFF
Power Calibration
The Power Calibration submenu configures and starts a source or receiver power calibration.
In true differential mode only the source power calibration results are used, no receiver power
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