GUI reference
R&S
®
ZNA
636User Manual 1178.6462.02 ─ 29
Load Match Correction
Load match correction prevents a possible impairment of the transmission S-parameter
measurements due to the influence of the waves reflected at the receive (load) ports. It
is performed as follows:
●
The correction is based on the system error corrected a- and b-waves of the
source and load ports. An appropriate calibration is a prerequisite for the load
match correction; see Chapter 4.7.3.1, "Calibration options", on page 262.
●
A reverse sweep is automatically performed during the measurement.
●
The correction is calculated under the assumption that the reverse transmission
factor is zero (e.g. S
12
=0 if S
21
is measured).
Load match correction can provide a significant improvement of the transmission S-
parameter measurements if the load ports are poorly matched. With sufficiently
matched load ports, you can disable the correction to gain speed.
Note: Disable the load match correction if your test setup or DUT is not suited for
reverse sweeps or if you want to gain speed.
Remote command:
[SENSe<Ch>:]FREQuency:CONVersion:GAIN:LMCorrection
Scalar Power Cal – All Power Cals On / All Power Cals Off
Activates or deactivates all scalar power calibrations in the active channel. "All Power
Cals On" is only available if a valid power calibration is available for the active channel,
but not active; see "Channel State" in Chapter 5.11.4.3, "Calibration Manager dialog",
on page 638.
Note: A label "PCal Off" appears behind the trace list of a wave quantity or a ratio if the
power calibration is switched off; see also Chapter 4.5.6.3, "Power calibration labels",
on page 222. The calibration status of each channel and trace appears in the setup
information (see "Setup tab" on page 875).
Remote command:
[SENSe<Ch>:]CORRection:PCAL
Active Power Cals...
Opens the Active Power Cals dialog
Power Leveling
This section is only available if the R&S ZNA is equipped with option R&S ZNA-K8
(see Chapter 4.7.7, "Millimeter-wave converter support", on page 281). The "Leveling
Dataset Usage" button opens the Leveling Datasets dialog that allows you to configure
the usage of the available leveling datasets.
Manage Cals – Recall Last Cal Set
Loads and activates the recall set for which the last calibration was performed. If the
last calibrated setup is already active, nothing is changed. The calibrated setups are
automatically stored in the
C:\Users\Public\Documents\Rohde-Schwarz\ZNA\Calibration\
RecallSets directory. A message box pops up if the directory is empty, e.g. because
no calibration was performed yet.
Remote command:
n/a
Cal softtool
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