funcGen(function,frequency,amplitude,DCOffset,Phase,TimeSpan,Numpts)

A general purpose function generator.

Syntax

o_funcGen(function,frequency,amplitude,DCOffset,Phase,TimeSpan,Numpts)

Function: Text - basic waveform function: Cosine, Sine, Triangle, Square, Ramp

Frequency: - Text - expression defining the frequency of the signal

Amplitude: - Text - expression defining the amplitude of the signal

DCOffset: - Text - expression defining the DC offset of the signal

Phase: - Text - expression defining the phase offset of the signal

TimeSpan: - Text - expression defining the duration of the signal

Numpts  - Text - expression defining the number of samples of the signal

return: Waveform

Usage

This extends the capabilities of the built-in Function Generator by allowing arbitrary expressions for the various settings. By doing so complex waveforms may be generated easily.

Frequency, Amplitude, DCOffset, and Phase are variables that are mutually available. Hence the expression defining any of these may use the others as well as the TimeSpan and NumPts variables, as well as the Time variable defined by NumPts and TimeSpan

TimeSpan and Numpts can also be expressions but may NOT use these internal variables.

Location

menu: veeos ==> Signal Processing ==> Modules ==> funcGen

library: sigLib

Example

Since expressions are possible, complex waveforms such as this amplitude-modulated square Chirp signal are easy to specify. Note the usage of the frequency and numPts variables.

Notes

If any of the defined parameters are arrays they MUST be of size numPts.

If you create circular definitions or too much cross-coupling of parameters expect errors! Keep it simple.

Reference

Dependencies

Supported On

VEE 7.0+, all platforms

See Also