R&S ZVL
GUI Reference
Trace Menu
Operating Manual 1303.6580.32-06
180
•
S11, S12, S21, S22
select the four elements of the standard 2-port scattering matrix (S-
parameters).
•
S-Param Wizard
opens a series of dialogs providing the settings for a standard S-parameter
measurement.
•
Distance-to-Fault
enables or disables the location of a discontinuity on a transmission line (with
option R&S ZVL-K2).
•
Define Distance-to-Fault
opens a submenu to configure the
Distance-to-Fault
measurement.
•
Impedance
opens a submenu to convert reflection S-parameters into matched-circuit impedances
(converted Z-parameters).
•
Admittance
opens a submenu to convert reflection S-parameters into matched-circuit admittances
(converted Y-parameters).
•
Stability Factor
selects one of the three factors K, µ
1
or µ
2
to assess the stability of linear circuits
(e.g. amplifiers).
Port assignments of the DUT and the analyzer
S-parameters S
<out>< in>
characterize the Device Under Test, so the indices <out> and < in> denote the
output and input ports of the DUT. Analogously the waves a
1
and a
2
are referred to as incident waves, b
1
and b
2
to as outgoing waves.
The analyzer measures the waves a
1
, b
1
, ... at its own test ports in order to obtain S-parameters, ratios
and other derived quantities. The test ports of the analyzer are numbered, so it is convenient to use them
as a reference, defining port number n of the DUT as the port connected to test port n of the analyzer.
With this convention the waves a
n
and b
n
have the following meaning:
•
a
n
is the wave transmitted at test port no. n of the analyzer (stimulus signal) and fed to port
number n of the DUT (incident wave).
•
b
n
is the wave transmitted at port number n of the DUT (response signal) and received at test port
no. n of the analyzer (received wave).
The analyzer offers various diagrams and display formats to visualize the results. The analyzer places
no restriction on the formats that are available for each measured quantity. However, to keep the
interpretation simple, it is recommended to select an appropriate display format; see Trace -
Format.
S11, S12, S21, S22
Select one of the four elements of the standard 2-port scattering matrix (S-parameters).
