Programming instructions

Source Components
Multisim Component Reference Guide 1-14 ni.com
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).
1.19 Voltage-Controlled Piecewise Linear Source
This source (voltage-controlled piecewise linear source) allows you to control the shape of the
output waveform by entering up to five (input, output) pairs, which are shown in the
Val u e tab
of the component’s properties dialog box as (X,Y) co-ordinates.
The X values are input co-ordinate points and the associated Y values represent the outputs of
those points. If you use only two pairs, the output voltage is linear.
Outside the bounds of the input co-ordinates, the source extends the slope found between the
lowest two co-ordinate pairs and the highest two co-ordinate pairs. A potential effect of this
behavior is that it can unrealistically cause the output to reach a very large or very small value,
ComponentRef.book Page 14 Thursday, December 7, 2006 10:12 AM