R&S ZVB - Page 303

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 288
Remote control:
SOURce<Ch>:GROup<group_no>:PORTs
[SENSe<Ch>:]CORRection:COLLect:CONNection:PORTs ALL | SINGle
[SENSe<Ch>:]CORRection:COLLect:CONNection:GENDers ALL | SINGle
[SENSe<Ch>:]FREQuency:CONVersion:AWReceiver[:STATe]
Logical Port
Defines the properties of the logical (balanced) ports defined in the Balanced Port and Port Groups dialog.
To display this section, at least one balanced port configuration must be defined and Logical Ports – Ref
Impedance must be selected in the Displayed Columns dialog.
 # is the port number of the logical port. This number is independent of the physical port numbers
and of the ports that are combined to form a balanced port.
 Ref Impedance shows the complex reference impedances of the ports.
Reference impedance settings
The default reference impedance for a physical port is equal to the reference impedance of the connector
type assigned to the port but can be defined as an arbitrary complex value (renormalization of port
impedances). By changing the reference impedance, it is possible to convert the measured values at 50 Ω
(75 Ω) into values at arbitrary port impedances. For details refer to section Virtual Transform – Reference
Impedances.
For balanced ports it is possible to define separate complex reference impedances for differential and for
common mode.
The default values for the balanced port reference impedances are derived from the default reference
impedance of the physical analyzer ports (Z
0
= 50 >Ω):
 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 control:
SENSe:PORT<phys_port>:ZREFerence <real> [,<imaginary]
SENSe:LPORT<log_port>:ZCOMmon <real> [,<imaginary]
SENSe:LPORT<log_port>:ZDIFferent <real> [,<imaginary]