GUI reference
R&S
®
ZNA
480
User Manual 1178.6462.02 ─ 20
Possible
are ignored while the ALC loop is active. Therefore, to pro-
tect sensitive DUTs from excess input levels, a narrower control range (smaller value)
can be required. A warning in the lower left corner of the "ALC Config" dialog points out
the potential hazard.
Remote command:
SOURce<Ch>:POWer<Pt>:ALC:RANGe
Start Value: Offset
A positive/negative offset Increases/decreases the source signal level before the ALC
loop is started. An appropriate value can speed up the ALC.
Note that the offset direction has been reversed in firmware version 2.20
, i.e.
before FW V2.20 a positive/negative offset decreased/increased the source signal
level before the ALC loop is started.
Remote command:
SOURce<Ch>:POWer<Pt>:ALC:SOFFset
ALC Deembedding
See
"Offset"
Use the configured
.
Deembed
Use the configured
"Off" (default)
Do not use the configured offset or the single-ended deembedding
network.
Remote command:
SOURce<Ch>:POWer<Pt>:ALC:VNETwork
ALC: Meas Port/ALC: Meas Receiver
Defines the received signal to be used for ALC, i.e. whose power the R&S
ZNA tries to
keep at a particular target level.
Note:
If the related port is used as the upper- or lower-tone port in a two-tone scenario
and the internal combiner is used, then the firmware automatically selects a1 when
ALC is enabled.
Remote command:
SOURce<Ch>:POWer<Pt>:ALC:RECeiver
ALC: Target Power/Target Power from Port Config
Defines the target level, the ALC tries to keep at the selected
.
By default, this "ALC: Target Power" is automatically set to the power level defined in
the
. However, you can uncheck "Target Power from Port Config",
apply this setting, and specify "ALC: Target Power" in the respective column.
Remote command:
SOURce<Ch>:POWer<Pt>:ALC:TPOWerSOURce<Ch>:POWer<Pt>:ALC:TPOWer:
DEFault
Couple Port Settings
Enforces identical ALC settings for the individual ports (except
). If
disabled, different settings can be made for the individual ports.
Stimulus softtool