GUI reference
R&S
®
ZNA
314
User Manual 1178.6462.02 ─ 20
For balanced ports, it is possible to define separate complex reference impedances for
differential and for common mode.
Balanced
port
Single-
ended port
Differential mode
Z
ref
= Z
0d
Common mode
Z
ref
= Z
0c
DUT
Single-ended
(unbalanced) port
Z
ref, default
= Z
connector
2
3
}
1
2
Physical Port
no.
Logical Port
no.
Analyzer
1
Balanced port:
Single Ended Mode / Common Mode / Differential Mode
Defines arbitrary reference impedances.
"Single Ended Mode" is available for single-ended logical ports only, "Common Mode"
and "Differential Mode" impedances for balanced ports only.
The default values for the balanced port reference impedances are derived from the
(real) default reference impedance Z
0
= 50
Ω of the (single-ended) physical analyzer
ports:
●
The default value for the differential mode is Z
0d
= 100 Ω = 2·Z
0
.
●
The default value for the common mode is Z
0c
= 25 Ω = Z
0
/2.
Remote command:
[SENSe<Ch>:]PORT<PhyPt>:ZREFerence
[SENSe<Ch>:]LPORt<LogPt>:ZCOMmon
[SENSe<Ch>:]LPORt<LogPt>:ZDIFferent
Connector
Allows you to specify the connector type of the related physical port.
Remote command:
[SENSe<Ch>:]CORRection:COLLect:CONNection<PhyPt>
Use Default
Allows you to toggle between default and renormalized port impedance (or impedan-
ces) for the selected logical port and connector type.
Remote command:
[SENSe<Ch>:]LPORt<LogPt>:ZDEFault[:STATe]
Renormalization According to Theory of
Selects the waveguide circuit theory for renormalization. The conversion formulas of
these theories only differ if the reference impedance of at least one test port has a non-
zero imaginary part.
Refer to
Chapter 4.3.2, "Reference impedances"
Meas softtool
