4 Audio Generator Functions94 Keysight U8903A User’s GuideAudio GeneratorPress on the Mode panel to access the audio generator settings page.Select the active channel to start configuring the channel. You can perform achannel selection by using the arrow keys.The generator waveform functions are listed as follows. These waveform functionsare accessible by pressing the corresponding softkeys.– Sine– Variable phase– Dual sine– Dual– SMPTE IMD 1:1– SMPTE IMD 4:1– SMPTE IMD 10:1– DFD IEC 60118– DFD IEC 60268– Noise– Gaussian– Rectangular– DC– Multitone– Square– Arbitrary