Agilent Technologies E4406A VSA Spectrum Frequency-DomainMeasurement, Reference Oscillator Source

Language Reference

SENSe Subsystem

Reference Oscillator Source

[:SENSe]:ROSCillator:SOURce INTernalEXTernal

[:SENSe]:ROSCillator:SOURce?

Select the reference oscillator (time base) source. Use ROSC:EXT:FREQ to tell the instrument the frequency of the external reference.

INTernal - uses internally generated 10 MHz reference signal

EXTernal - uses the signal at the rear panel external reference input port.

Preset
and *RST:	Persistent State with factory default of Internal
Remarks:	Global to system.
Front Panel
Access:	System, Reference, Ref Oscillator

Spectrum (Frequency-Domain) Measurement

Commands for querying the spectrum measurement results and for setting to the default values are found in the “MEASure Group of Commands” on page 255. The equivalent front panel keys for the parameters described in the following commands, are found under the Meas Setup key, after the Spectrum (Freq Domain) measurement has been selected from the MEASURE key menu.

Spectrum—Data Acquisition Packing

[:SENSe]:SPECtrum:ACQuisition:PACKing

AUTOLONGMEDiumSHORt

[:SENSe]:SPECtrum:ACQuisition:PACKing?

Select the amount of data acquisition packing. This is an advanced control that normally does not need to be changed.

Factory Preset
and *RST:	AUTO
Remarks:	To use this command, the appropriate mode should be
	selected with INSTrument:SELect.

346 Chapter 5