R&S ZVB - Page 142

R&S
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ZVA / R&S
®
ZVB / R&S
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ZVT GUI Reference
Trace Menu
Operating Manual 1145.1084.12 – 30 127
Z-parameters can be used as an alternative to S-parameters (or Y-parameters) in order to completely
characterize a linear n-port network.
Z-Parameter
Is a dialog to select Z-parameters for multiport measurements (including the 2-port Z-parameters) or
mixed mode Z-parameters.
The notation for Z-parameters and the functionality of the Z-Parameter dialog is analogous to the definition
of S-parameters. The dialog provides the following settings:
 Z-Parameter selects the type (left pull-down list) and the port number assignment (right pull-down
list) of the Z-parameter. Mixed mode parameters are only available if a balanced port
configuration is active. They are expressed as Z
<mout><min>
, where <mout> and <min> denote the
output and input port modes. The port numbers are assigned in the order Z
<out>< in>
, where <out>
and <in> denote the output (response) and input (stimulus) port numbers of the DUT.
 Balanced and Measured Ports opens the Balanced Port and Port Groups dialog to define the
properties of the test ports. Single-ended (unbalanced) Z-parameters are assigned to the physical
test ports of the analyzer. Balanced Z-parameters are assigned to logical test ports. Selecting a
balanced port configuration with logical test ports means that the unbalance-balance conversion is
switched on and that the analyzer provides mixed mode Z-parameters.
 The graphics above the Balanced and Measured Ports button illustrates the current port
configuration.
The port configuration is valid for all traces in the channel
The settings made in the Balanced and Measured Ports dialog are channel settings and therefore apply to
all traces assigned to the channel (Balanced and Measured Ports is also accessible through Channel –
Mode – Port Config...). Within a channel the analyzer measures either single-ended or mixed mode
parameters. If a balanced test port configuration is selected the single-ended parameters assigned to the
channel are converted into mixed mode parameters.
Remote
control:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "Z11" | "Z12" |
"Z21" | "Z22"
Create new trace and select name and measurement parameter:
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "Z11" | "Z12" |
"Z21" | "Z22"