Specifications
Touch System Programmer’s Guide 1-1
Introduction to 
Infrared Touch 
Systems
1
his chapter gives an overview of Carroll Touch scanning infrared 
touch systems, and covers the following topics:
• Overview.
• Touch Frames.
• Touch Controllers.
• Interpolating Touch Coordinates.
• Reporting Touch Coordinates.
• Failed Beams.
T
Introduction to 
Infrared Touch 
Systems










