R&S ZVB - Page 454

R&S
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ZVA / R&S
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ZVB / R&S
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ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 439
the frequency converter flanges and of the waveguide calibration standards must have the same
orientation.
TRL extensions: calibration with two Lines, combination with TRM
Checking one of the boxes in the list causes the analyzer to stop the measurement in all channels except
the active one and measure the standard according to the active channel settings. The progress of the
calibration sweep and the result can be monitored in the diagram. In case of an error (e.g. if the
measurement result shows that the calibration standard was not connected properly), Abort Sweep
immediately terminates the sweep.
After completing the sweep the analyzer generates a short sound and a green checkmark appears in the
checkbox. Measurements can be repeated as often as desired. Newer results overwrite older
measurement data.
Most channel settings including the trigger settings remain valid for calibration sweeps and power
calibration sweeps. To start the calibration sweeps without delay select Free Run trigger mode.
Checks for the calibration sweep
If the generator frequency range of the active ports exceeds the validity range of the standard model
(defined by Min. Freq. and Max. Freq. in the Add/Modify Standard dialog) the analyzer displays a notice
box (confirm with OK).
The Measure Standards dialog provides further controls:
 Show Measurement Diagram displays or hides the diagram to the right of the list of Measured
Standards. Hiding the diagram leaves more space for displaying the characteristics of the
measured standards.
 Show Phase displays or hides the phase trace (in addition to the dB Mag trace) in the
measurement diagram.
 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 Previous 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 calibration is
applied to the active channel. In the Port Configuration dialog, only the calibrated ports are
enabled for the measurement.
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.
If an unknown through standard is measured, Apply opens an additional dialog to check the
calculated length offset parameters; see Unknown Through Standard.
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 Config.
dialog (menu System – 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