R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
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Standards. Hiding the diagram leaves more space for displaying the characteristics of the
m
e
asured standards.
• Keep Measurement Data for >Repeat Previous Cal< causes the raw measurement data of the
standards to be stored after the calibration is completed. This enables the Repeat Prev Cal...
command, which can be used to optimize a previous calibration without repeating the
measurement of all standards. If Keep Measurement Data... is not active, then the raw
measurement data of the standards is deleted and the analyzer only stores the system error
correction data. Deleting the raw data saves disk space.
• Apply is enabled as soon as data has been acquired for all standards. The button starts the
calculation of the system error correction data and closes the calibration wizard. The current
instrument settings are stored with the correction data. To avoid incompatibilities, older system
error correction data is deleted unless it has been transferred into a Cal Pool using the Calibration
Manager.
The Keep Measurement Data for >Repeat Previous Cal< setting is valid for the current calibration
only. To activate this function in general, use the parameter in the User Interface tab of the Sytem
Configuration dialog (menu Nwa-Setup – System Config).
Checks during the calculation of correction data
Incompatibilities between the selected calibration type, the standards and the channel settings may cause
the calibration to be inaccurate. The analyzer auto-detects potential sources of errors and displays
appropriate, self-explanatory notice boxes.
Remote control:
[SENSe<Ch>:]CORRection:COLLect[:ACQuire]:RSAVe
[S
EN
Se<Ch>:]CORRection:COLLect[:ACQUire]:SELected
[SENSe<Ch>:]CORRection:COLLect:SAVE
[SENSe<Ch>:]CORRection:COLLect:DELete ["<cal_name>"]
Calibration Labels
The following labels in the trace list inform you about the status or type of the current calibration.
Label Meaning
Cal The system error correction is applied without interpolation. This means that a set of measured
correction data is available at each sweep point.
Cal
int
The system error correction is applied, however, the correction data for at least one sweep
point is interpolated from the measured values. This means that the channel settings have
been changed so that a current sweep point is different from the calibrated sweep points. It is
not possible to disable interpolation.
Cav The system error correction uses variable calibration methods to calculate a measurement
parameter. This happens for example, if a Z-parameter is calculated from S-parameters which
are partly factory calibrated and partly normalized. This can also happen, if the analyzer uses a
one port calibration at port 1 and a normalization at port 2.
Ca? The system error correction is applied, however, the accuracy is questionable because of of
the following applies:
• The attenuator settings during the calibration differ from the attenuator settings during
the measurement.
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