Programming instructions

Rated Virtual Components
 National Instruments Corporation 2-11 Multisim Component Reference Guide
You must specify a light channel in each of these paired parts (photodiode and
phototransistor). This is done in the
Value tab of the component’s properties screen. Each
diode must have a different value for its light channel, however, the phototransistor can share
the same value with several other phototransistors.
 To adjust the component’s tolerances:
1. Double-click on the placed component and click the Value tab.
2. Change the following values as desired:
•
Animation Delay Factor — increase this number to slow the speed of animation of the
symbol blowing. This is not a real-time value.
•
Light Channel (Integer) — set to match the light channel for the corresponding
photodiode.
•
Maximum Collector-Emitter Voltage — If this value is exceeded during simulation, the
phototransistor blows.
•
Maximum Collector Current — If this value is exceeded during simulation, the
phototransistor blows.
3. Click OK.
2.2.13 Rated Potentiometer
This component acts much like a tapped/split resistor, except that you can adjust its resistance.
Note Refer to the Component Reference Guide for a more detailed discussion of
potentiometers.
 To adjust the component’s tolerances:
1. Double-click on the placed component and click the Value tab.
2. Change the following values as desired:
•
Key — enter the key that will increase the resistance by the amount set in the Increment
field.
•
Increment — enter the amount by which the resistance will increase when the key set
in the
Key field is pressed.
•
Animation Delay Factor — increase this number to slow the speed of animation of the
symbol blowing. This is not a real-time value.
ComponentRef.book Page 11 Thursday, December 7, 2006 10:12 AM