Specifications

Programming Guide 2-33

ESG Family Signal Generators Programming Commands and Examples

:LFOutput Subsystem

Low Frequency Output Source

:LFOutput:SOURce INT[1]|FUNCtion

:LFOutput:SOURce?

This command sets the low frequency source. The choices are Internal or Function

Generator. When set to Function Generator, you can select a frequency and shape in

addition to selecting the amplitude for the signal that is output at the LF OUTPUT front

panel connector. Any modulation with the internal source selected is turned off when the

function generator is selected.

When set to Internal, this command allows you to output a signal at the LF OUTPUT

connector where the frequency and shape of the signal is set by the internal source as it is

being used by a modulation. For example, if the internal source is currently assigned to an

AM path configuration and AM is turned on, the signal output at the LF OUTPUT

connector will have the frequency and shape of the amplitude modulating signal.

If the pulse source for pulse modulation is set to internal square, the internal source is a

sinewave which is later squared by the modulator to generate the pulse squarewave. The

LF OUTPUT signal for this internal source, therefore, is a sinewave. If the pulse source for

pulse modulation is set to internal pulse, a true variable-width pulse will be seen on the

LF OUTPUT.

At *RST, this value is set to Internal.

Low Frequency Output State

:LFOutput:STATe ON|OFF|1|0

:LFOutput:STATe?

This command sets the low frequency source state. The choices are On (1) or Off (0).

*RST Value: Off

Low Frequency Output Waveform

PULSe|NOISe|DC

:LFOutput:FUNCtion:SHAPe?

This command selects the waveform for the low frequency output signal. The choices are

Sine, Dual-sine, Swept-sine, Triangle, Square, Ramp, Pulse, Noise, and DC waveforms.

*RST Value: Sine