Programming instructions

Voltage-Controlled Square Wave
 National Instruments Corporation 1-11 Multisim Component Reference Guide
A square wave control voltage produces a form of FSK (frequency shift keying), a sine wave
control voltage produces a form of FM (frequency modulation).
1.17 Voltage-Controlled Square Wave
This oscillator is identical to the voltage-controlled sine wave oscillator except that it outputs
a square wave. This oscillator takes an input AC or DC voltage, which it uses as the
independent variable in the piecewise linear curve described by the (control, frequency) pairs.
From the curve, a frequency value is determined, and the oscillator outputs a square wave at
that frequency. When two co-ordinate pairs are used, the oscillator outputs a linear variation
of the frequency with respect to the control input. When the number of co-ordinate pairs is
greater than two, the output is piecewise linear. You can change duty cycle, rise and fall times,
and the peak and valley values of the output square wave by resetting the Output peak high
value and Output peak low value on the model parameter dialog box.
ComponentRef.book Page 11 Thursday, December 7, 2006 10:12 AM