Improving level performance
R&S
®
SMB100B
155User Manual 1178.3711.02 ─ 08
7.2.1 ALC settings
Access:
► Select "Level" > "Automatic Level Control".
In the "ALC" dialog, you can configure the settings for the automatic level control of
the RF signal to achieve optimal accuracy.
The remote commands required to define these settings are described in Chap-
ter 12.15.10, "SOURce:POWer subsystem", on page 491.
Settings
State............................................................................................................................155
Detector Sensitivity..................................................................................................... 155
State
Selects the internal level control mode.
"Auto"
Selects the most appropriate ALC mode automatically.
"On"
Activates ALC permanently.
"Off (Sample & Hold)"
Deactivates the ALC, but allows you to recalibrate the level at each
frequency and level change. The value remains up to the next
change.
"Off (Table)"
Controls the level using the attenuation values of the internal ALC
table.
"Table & On"
Starts with the attenuation setting from the internal ALC table and
continues with automatic level control.
For further details on the individual settings, an overview of the functionality and details
on what is to be considered, see "ALC states and their effects" on page 154.
Remote command:
[:SOURce<hw>]:POWer:ALC[:STATe] on page 492
Detector Sensitivity
Determines the path of the internal level detector.
Automatic level control (ALC)
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