Automatic Level Control - ALC R&S SMB
1407.0806.32 4.38 E-2
State - ALC
Activates/deactivates internal level control.
Off
Sample&Hold
Internal level control is deactivated.
Remote-control command:
SOUR:POW:ALC OFF
SOUR:POW:ALC:OMOD SHOL
Auto
Default state. Level control is automatically adapted
to the operating states.
Remote-control command:
SOUR:POW:ALC AUTO
On
Internal level control is permanently activated.
Remote-control command:
SOUR:POW:ALC ON
NOTE
The level is decreased by 30 dB during Sample&Hold measurement!
When pulse modulation is activated, the ALC state of the R&S SMB is automatically
changed to ALC OFF (Sample & Hold). In this state the ALC loop is opened and the
output level is not regulated but the level modulator is set directly. In order to set the
correct output level, a sample & hold measurement is executed after each frequency
or level setting. The level is decreased by 30 dB during Sample&Hold measurement
Search Once - ALC
Manually activates level control briefly to allow the level to be
calibrated (the Sample&Hold setting must be selected).
Remote-control command:
SOUR:POW:ALC:SONC
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