R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 300
– (defined by the sweep segments)
The frequencies and power levels are displayed in two separate but analogous panels:
Enter & Display in the Frequency panel contains a list of the channel base frequency f
b
plus the
source and receiver frequencies at all logical ports that depend on f
b
. The list includes the
frequencies of external power meters and generators. Fixed source and receiver frequencies (see
Converted Frequencies) are not in the list; they are not affected by the settings in the Stimulus
dialog. For R&S ZVA analyzers without option R&S ZVA-K4, all frequencies and power levels are
coupled so that this selection has no effect.
Enter & Display in the Power panel contains a list of the channel base power p
b
plus the source
and receiver power levels at all logical ports that depend on p
b
. The list includes the power levels
of external power meters and generators. Fixed source and receiver power levels (see Port-
Specific Power) are not in the list; they are not affected by the settings in the Stimulus dialog.
The selected stimulus axis appears in the channel list when the Port Configuration dialog is
closed, e.g. Base Pwr. x dBm, Port 1 Pwr x dBm, Gen1 Pwr x dBm.
Start, Stop define the frequency/power sweep ranges; CW defines the fixed frequency/power.
Frequency and power definition in the Stimulus dialog
If the selected reference frequency or reference power is changed, the analyzer modifies all source and
receiver frequencies/power levels accordingly, leaving the frequency and power conversion formulas
unchanged. The Stimulus dialog thus ensures that all system frequencies/power levels can be modified
consistently, based on an arbitrary reference frequency.
The power and frequency entries in the Stimulus dialog are unrestricted. A compatibility check is
performed when the dialog is closed. Frequencies and power levels beyond the analyzer's hardware limits
are marked with a red input field in the calling Port Configuration dialog.
By default, all port frequencies/power levels are referenced to the base frequency/power (Channel Base
f
b
/P
b
). Once a port frequency or power is selected as a reference, this reference can no longer be set to a
fixed stimulus value (see e.g. Converted Frequencies).
[SENSe<Ch>:]SWEep:AXIS:FREQuency
[SENSe<Ch>:]SWEep:AXIS:POWer
Balanced Ports and Port Groups
Opens a dialog to select a balanced port configuration and define reference impedances for balanced
ports and to select the measured ports.
Balanced Ports and Port Groups
Selecting a balanced port configuration means that one or more pairs of physical test ports are combined
to form logical (balanced) ports.
Unbalance-balance conversion is the simulation of one or more unbalance-balance transformers (baluns)
integrated in the measurement circuit in order to convert the DUT ports from an unbalanced state into a
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