GUI Reference
R&S
®
ZNA
405
User Manual 1178.6462.02 ─ 12
ALC On
Enables/disables automatic level control (ALC) for the current channel.
If mm-wave converters are involved in the setup, the VNA firmware checks whether
suitable leveling and calibration data are a active. Otherwise a warning message is dis-
played and ALC remains disabled (although the checkbox is checked).
Use the
Leveling Dataset Configuration Dialog
to select a leveling dataset. For back-
ground information see
Remote command:
RF Off All Channels
"RF Off All Channels" switches the internal power source for all channels off (if
checked) or on. Switching off the RF power helps to prevent overheating of a connec-
ted DUT while no measurement results are taken.
Tip:
Switching off the internal RF sources while an external generator is used can
improve the measurement accuracy. "RF Off All Channels" also deactivates external
generators, so you have to use the settings in the "Arb Frequency" tab of the
(with option R&S
ZNA-K4).
Remote command:
Receiver Step Att.
Defines an attenuation factor for the received waves at each analyzer port. At least one
receiver step attenuator must be installed to use this feature; see
Receiver step attenuators are used to adapt the received signal level to the input level
range of the analyzer. They protect the instrument from being overloaded or damaged,
e.g. if the DUT is a power amplifier.
Attenuation factors are port- and channel-specific. Possible values are 0
dB to 35
dB in
steps of 5
dB. The analyzer rounds any entered value below the maximum attenuation
to the closest step.
Note:
Receiver step attenuators are optional hardware (see
Remote command:
6.8.2.2
Power Config Dialog
Except for the ALC settings, which are covered in the
, the "Power
Config" dialog offers the same settings as the
of the
ter 6.12.2.2, "Port Settings Dialog"
6.8.2.3
ALC Config Dialog
Enables and configures automatic level control (ALC) for the current channel.
Stimulus Softtool
