Appendix D: Sample Waveforms
AWG610 Arbitrary Waveform Generator User Manual D-7TableD-10: Amplitude modulation File name AM.WFM Madewith equation editor
Equation clock = 1.28e6
size = 32000
k1 = 4000 'modulationfrequency
k2 = 10e6 'carrierfrequency
a = 0.5 'modulation degree
am.wfm" = norm((1+a*cos(2 * pi * k1 * time)) * cos(2 * pi * k2 * time))
delete (tmp")
Descriptions This example shows a double sideband (DSB) amplitude modulated
waveform with a modulation factor of 0.5. The modulating signal is a
cosine wave.
Settings Waveformpoints: 32000, Clock frequency: 128 MHz,
Output time: 0.25 ms
TableD-11: Frequency modulation File name FM.WFM Madewith equation editor
Equation clock = 819.2e6
size = 32768
k0 = 25e3 'modulationfrequency
k1 = 100e6 'carrierfrequency
b = 60.12e3 'frequency deviation
fm.wfm" = sin(2 * pi * k1 * time+b/k0*sin(2 * pi * k0 * time))
Descriptions k0 is the frequency of the cosine wave that is used to modulate a sine
wave of frequency k1. Toassure that the phases match when this
waveform is iterated, the carrier frequency times the modulating signal
period is set to be an integer.The modulation index is given by k2/k0.
Settings Waveformpoints: 32768, Clock frequency: 819.2 MHz,
Output time: 40 ms