50 Agilent N5181A/82A MXG Signal Generators SCPI Command Reference
Basic Function Commands
Power Subsystem ([:SOURce]:POWer)
Power Subsystem ([:SOURce]:POWer)
:ALC:LEVel
Supported All Models
[:SOURce]:POWer:ALC:LEVel <value><unit>
[:SOURce]:POWer:ALC:LEVel?
This command sets the automatic leveling control (ALC) level. Use this command after setting the
attenuation auto mode to On. Refer to “:ATTenuation:AUTO” on page 53 for setting the attenuation
auto mode.
The ALC is used to maintain the signal generator’s output power level by compensating for power
fluctuations due to drift, band changes, or load variations. After you set the ALC level, the signal
generator’s output power is monitored and corrected so that the power level setting is maintained.
Example
:POW:ALC:LEV 10DB
The preceding example sets the ALC to 10 dB.
*RST +1.00000000E+000
Range -20 to 20
Key Entry Set ALC Level
:ALC:SEARch
Supported All Models
[:SOURce]:POWer:ALC:SEARch ON|1|ONCE
[:SOURce]:POWer:ALC:SEARch?
This command enables or disables the internal power search calibration. A power search is
recommended for pulse- modulated signals with pulse widths less than one microsecond.
ON (1) This choice executes the power search automatically with each change in RF
frequency or power.
ONCE This choice executes a single power search of the current RF output signal.
*RST 1
Remarks Use this command when the ALC state is set to OFF (0). Refer to “:ALC[:STATe]”
on page 52 for setting the ALC state.
:ALC:SEARch:REFerence
Supported All Models
[:SOURce]:POWer:ALC:SEARch:REFerence FIXed|MODulated
[:SOURce]:POWer:ALC:SEARch:REFerence?
This command sets either fixed or modulated modes of power search.
Key Entry Do Power Search
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