R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
246
After assigning a calibration or adapter kit to a user-defined connector type, you can still change its
name, offset model and reference impedance. Switching between sexed and sexless will delete all
kits assigned to the connector type.
Remote control:
[SENSe<Ch>:]CORRection:CONNection
[SE
NS
e<Ch>:]CORRection:CONNection:DELete
Offset Model Dialog
Defines the mode of wave propagation in the lines of the standards associated with the connector type.
This dialog is opened from the Available Connector Types dialog (
button in the table).
The Parameters to be selected depend on the Line Type:
• If the calibration kit standards contain lines with transverse electric propagation mode (TEM), then
the Relative Permittivity ]
r
of the dielectric can be defined. The default permittivity is the value for
air. TEM-type lines have not cutoff frequency.
• If the calibration kit standards contain waveguides, then the lowest frequency where a wave
propagation is possible (Cutoff Frequency f
c
) can be defined. The default cutoff frequency if 0 Hz
(propagation at all frequencies). No relative permittivity is needed for waveguides.
The impedance for waveguides is frequency-dependent. If a waveguide line type is selected, various
dialogs (e.g. Add Standard...) will indicate varies instead of a definite impedance value.
Impact of offset model parameters
The offset model parameters are used for the calculation of the S-parameters for the calibration standards
associated with the connector type, provided that they are derived from a circuit model (Add/Modify
Standard dialog).
• For TEM-type lines, the relative permittivity ]
r
is needed for the conversion of and ZVR-type Loss
(in units of dB/sqrt(GHz)) into an Agilent-type Offset Loss (in units of GV/s) and vice versa (see
Offset andLoad parameters). The Electrical Length and Delay values in the Modify Offset dialog
are directly entered and therefore independent of ]
r
.
• For waveguides, the low frequency cutoff frequency f
c
is important because no wave propagation
is possible at frequencies below f
c
. If a standard is measured in order to acquire calibration data,
the analyzer checks the low frequency cutoff. If the start frequency of the sweep range is below f
c
, then the calibration wizard generates and error message.
The offset model parameters are not used except in the context of calibration. The offset
parameterdefinitions (seeMechanical Length) are based on independent ]
r
values.
Remote control:
[SENSe<Ch>:]CORRection:CONNection
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