Programming instructions

Source Components
Multisim Component Reference Guide 1-12 ni.com
Example
The example shows a square wave generator with output frequency determined by a control
voltage.
Control voltage may be DC, controlled by a potentiometer, as is the case for many signal
generators and function generators.
Control voltage may be a continuous variable of any desired shape as required in sweep
generators and spectrum analysers.
In the example shown below, the VCO parameters are set so that control voltage of 0V
produces an output frequency of 100Hz and control voltage of 12V produces an output
frequency of 20KHz.
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).
ComponentRef.book Page 12 Thursday, December 7, 2006 10:12 AM