Concepts and Features
R&S
®
ZNC
43
User Manual 1173.9557.02 ─ 13
Complex dimensionless quan-
tities:
S-parameters and ratios
Complex quantities with dimensions:
Wave quantities, Z-parameters, Y-
parameters, impedances, admittan-
ces
Real quantities:
Stability Factors
Lin Mag
ON
ON (default for Z-parameters, Y-param-
eters, impedances, admittances)
ON (default)
dB Mag
ON (default)
ON (default for wave quantities)
–
Phase
ON
ON
–
Real
ON
ON
ON
Imag
ON
ON
–
Unwrapped Phase
ON
ON
–
Smith
ON (reflection coefficients S
ii
)
–
–
Polar
ON
–
–
Inverted Smith
ON (reflection coefficients S
ii
)
–
–
SWR
ON (reflection coefficients S
ii
)
–
–
Delay
ON (transmission coefficients S
ij
)
–
–
The default formats are activated automatically when the measured quantity is changed.
3.3 Measurement Results
This section gives an overview of the measurement results of the network analyzer and
the meaning of the different measured quantities. All quantities can be selected in the
"TRACE > MEAS >" softtool panels.
The definitions in this and the following sections apply to general n-port DUTs. An ana-
lyzer with a smaller number of test ports provides a subset of the n-port quantities.
3.3.1 S-Parameters
S-parameters are the basic measured quantities of a network analyzer. They describe
how the DUT modifies a signal that is transmitted or reflected in forward or reverse direc-
tion. For a 2-port measurement the signal flow is as follows.
Measurement Results
