Combining waveforms – Teledyne LeCroy PXA125 User Manual
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User Manual PXA125
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Figure 3-58. Using the Equation Editor to Build Amplitude Modulated Signal
With Upper and Lower Sidebands
Combining
Waveforms
The last but not least powerful feature allows you to combine
waveforms, which you previously stored on your hard disc. You can
write mathematical expressions that contain waveforms, simple
operands and trigonometric functions similar to the example given
below. If you want to use waveforms in your equations, you must first
generate these waves and store them on your hard disk. You identify
waveforms by adding the *.wav extension as shown in the example
below.
Ampl(p)= Sine.wav*sin(omg*p*10)*Noise.wav/1000
The above equation will generate amplitude-modulated waveform with
added noise. The following steps demonstrate how to create, store
and combine waveforms using this equation.
Step 1 – Create and store sine.wav. Invoke the Equation Editor and
type the following equation:
Ampl(p)= 5000*sin(omg*p)
Press OK and then select the Save Waveform As… from the File
command. Save this file using the name Sine.wav
Step 2 – Create and store Noise.wav. From the Wave command