GUI reference
R&S
®
ZND
242
User Manual 1173.9557.02 ─ 61
Define Physical to Logical Port Relation
Allows you to define balanced, single-ended, and unused ports. The two physical ports
of the analyzer can be combined into a balanced port.
●
To define a balanced port, select two physical ports and tap "Balanced".
●
To dissolve a balanced port, select it and tap "Single".
●
To exclude a physical port from the measurement, select the port and tap
"Unused".
Furthermore, provides functions for renumbering the logical ports.
Remote command:
SOURce<Ch>:LPORt<LogPt>
SOURce<Ch>:LPORt<LogPt>:CLEar
Reference Impedance tab
The "Reference Impedance" tab of the "Balanced Ports" dialog allows you to define (or
redefine) the impedances of the logical ports.
Background information
Refer to
Chapter 4.3.2, "Reference impedances"
By default, the reference impedance of a physical port is set to the reference impe-
dance of the connector type assigned to the port. However, it can be defined as an
arbitrary complex value (renormalization of port impedances). By changing the refer-
ence impedance, it is possible to convert the measured values at 50
Ω (75
Ω) into val-
ues at arbitrary port impedances.
For balanced ports, it is possible to define separate complex reference impedances for
differential and for common mode.
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