Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 347 / 813

R&S
®
ZVA/ZVB/ZVT Channel Menu
1145.1084.12 4.185 E-6
•
Renormalization of the physical port impedances affects e.g. S-parameters and wave quantities
in
Power representation.
•
Renormalization of the balanced port impedances affects all measured quantities (Trace –
Measure) that the analyzer provides for balanced ports.
The default reference impedance of a physical port is equal to the reference impedance of the
connector type assigned to the port (50 or 75
).
It can be defined as a complex value.
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
):
•
The default value for the differential mode is Z
0d
= 100 = 2*Z
0
.
•
The default value for the common mode is Z
0c
= 25 = 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]