Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceAM Modulation CommandsAM Modulation CommandsSee also “Amplitude Modulation,” starting on page 71 in chapter 3.AM OverviewThe following is an overview of the steps required to generate anAM waveform. The commands used for AM are listed on the next page.1 Set up the carrier waveform.Use the APPLy command or the equivalent FUNC:SHAP, FREQ, VOLT,and VOLT:OFFS commands to select the function, frequency, amplitude,and offset of the carrier waveform. You can select a sine, square,triangle, ramp, or arbitrary waveform for the carrier.2 Select the shape of the modulating waveform.You can modulate the carrier with a sine, square, triangle, ramp, noise,or arbitrary waveform. Use the AM:INT:FUNC command to select themodulating waveshape.3 Set the modulating frequency.Set the modulating frequency to any value between 10 mHz and 20 kHzusing the AM:INT:FREQ command.4 Set the modulation depth.Set the modulation depth to a value between 0% and 120% usingthe AM:DEPT command.5 Select the modulation source.The function generator will accept an internal modulating signal, anexternal modulating signal, or both. Select the modulating source usingthe AM:SOUR command.6 Enable AM modulation.After you have set up the other modulation parameters, use theAM:STAT ON command to enable AM.154