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
[SENSe<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 G
V
/s) and vice versa (see
Offset
and
Load
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 (see
Mechanical Length)
are based on independent
]
r
values.
Remote control:
[SENSe<Ch>:]CORRection:CONNection
