Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceAM Modulation CommandsAM CommandsUse the APPLy command or the equivalent FUNC:SHAP, FREQ, VOLT,and VOLT:OFFS commands to configure the carrier waveform. Set thecarrier frequency between 100 mHz and 15 MHz (100 kHz for triangleand ramp). The default is 1 kHz.AM:DEPTh {|MINimum|MAXimum}Set the internal modulation depth in percent. Select from 0% to 120%.The default is 100%. MIN = 0%. MAX = 120%. [ Stored in volatile memory ]If you select the external modulating source (AM:SOUR EXT), themodulation depth is controlled by the signal level present on theAM Modulation terminal (5 volts peak corresponds to 100% modulation).AM:DEPTh? [MINimum|MAXimum]Query the modulation depth. Returns a value in percent.4AM:INTernal:FUNCtion {SINusoid|SQUare|TRIangle|RAMP|NOISe|USER}Select the shape of the modulating waveform. Used only when theinternal modulation source is selected (AM:SOUR INT). You can use thenoise function as the modulating waveform. However, you cannot usethe noise function or dc volts as the carrier waveform. The defaultis SIN. [ Stored in volatile memory ]AM:INTernal:FUNCtion?Query the shape of the internal modulating waveform. Returns “SIN”,“SQU”, “TRI”, “RAMP”, “NOIS”, or “USER”.AM:INTernal:FREQuency {|MINimum|MAXimum}Set the frequency of the modulating waveform. Used only when theinternal modulation source is selected (AM:SOUR INT). Select from10 mHz to 20 kHz. The default is 100 Hz. MIN = 10 mHz.MAX = 20 kHz. [ Stored in volatile memory ]AM:INTernal:FREQuency? [MINimum|MAXimum]Query the internal modulating frequency. Returns a value in hertz.155