Configuring the RF Signal
R&S
®
SMW200A
569User Manual 1175.6632.02 ─ 30
Detector Sensitivity
Determines the path of the internal level detector.
The level detector of the ALC has multiple paths distinguished by their sensitivity.
"Auto"
Selects the detector path automatically, according to the given level.
This mode is the recommended operation mode.
"Low"
Selects the detector path with low sensitivity.
This setting is intended for signals with high internal electronic levels.
"Med"
Selects the path with medium sensitivity.
This setting corresponds to normal mode. It is intended for signals
with medium internal electronic levels.
"High"
Selects the detector path with high sensitivity, intended for signals
with low internal electronic levels.
"Fix"
Fixes the last set sensitivity setting.
Remote command:
[:SOURce<hw>]:POWer:ALC:DSENsitivity on page 1190
Driver Amplifier
Selects the switching state of the driver amplifier, that means the switchable amplifier
or step attenuator at the output.
"Auto"
Switches the step attenuator automatically.
"On/Off"
The driver amplifier is switched on, or off respectively.
"On (maximum Gain)"
The driver amplifier is switched on.
The R&S SMW supplies the maximum level at the output within the
frequency range 6 GHz to 10 GHz.
Note: In this mode, the harmonics increase.
"Fix"
Fixes the last setting.
The Readjust button switches the driver amplifier state first to auto-
matic, calculates all level settings and then resets to fix.
Remote command:
[:SOURce<hw>]:POWer:ALC:DAMPlifier on page 1190
Sample Level
Determines the level at the output of the instrument during the sample process.
How to: See Chapter 8.9.2.3, "How to Enable the ALC", on page 570.
"Full"
The sample level corresponds to the currently set PEP level.
"Attenuated"
Attenuates the sample level by the crest factor of the used I/Q modu-
lation signal or 10 dB, whichever is lower.
"Minimum"
Attenuates the sample level by 10 dB.
Remote command:
[:SOURce<hw>]:POWer:ALC:SLEVel on page 1191
Improving Level Performance
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