R&S ZNC3, User Manual, Page: 270 / 795

GUI Reference
R&S
®
ZNC
254 User Manual 1173.9557.02 ─ 13
defined. The default permittivity is the value for air. TEM-type lines have no 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.
Note: 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 def-
inite impedance value.
Impact of line type parameters
The line type parameters are used for the calculation of the S-parameters for the cali-
bration standards associated with the connector type, provided that they are derived from
a circuit model (see
​
chapter 4.4.3.9, "View / Modify Cal Kit Standards Dialog" ,
on page 258).
●
For TEM-type lines, the relative permittivity ε
r
is needed for the conversion of a ZVR-
type "Loss" (in units of dB/sqrt(GHz)) into an Agilent-type "Offset Loss" (in units of
GΩ/s) and vice versa (see
​
chapter 4.4.3.9, "View / Modify Cal Kit Standards Dia-
log" , on page 258). The "Electrical Length" and "Delay" values in the "View / Modify
Cal Kit Standards" dialog are directly entered and therefore independent of ε
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
, an error message is generated.
The offset model parameters are not used except in the context of calibration. The offset
parameter definitions are based on independent ε
r
values; see
​
chapter 4.4.6.1, "Offset
Embed > Offset" , on page 288.
Remote command:
​
[SENSe<Ch>:
​
]CORRection:
​
CONNection
​
Add / Delete
Adds or deletes a user-defined connector type. The parameters of a user-defined con-
nector type can be modified in the table. Deleting a connector type will also delete all
calibration or adapter kits assigned to it.
Remote command:
​
[SENSe<Ch>:
​
]CORRection:
​
CONNection
​
​
[SENSe<Ch>:
​
]CORRection:
​
CONNection:
​
CATalog?
​
​
[SENSe<Ch>:
​
]CORRection:
​
CONNection:
​
DELete
​
4.4.3.7 Calibration Kits Dialog
The "Calibration Kits" dialog shows the available calibration kits for the different connector
types. It is also used for cal kit and cal kit file management.
Channel Settings