User`s guide
Chapter 1 - Introduction CARROLL TOUCH
 1-4 Touch System Diagnostics (CTDIAG) User’s Guide
If errors are reported on the System Information display, if the System 
Information display or the Touch Coordinates screen does not appear, or 
if you see Touch System Init Failed at the bottom of the 
screen, recheck all cable connections, reboot the computer and touch 
system, then retest. If your system does not work upon retest, you may 
need to modify the other configuration options or communication 
parameters. Review the information in Chapters 3 and 4 for details.
Debugging
CTDIAG also offers you the option to debug touch system problems by 
examining the communication between the computer and the touch 
screen controller, with or without the TAPI driver. At this level of 
communication, you are examining in detail the commands in the 
Smart-Frame Protocol and the functions of the TAPI driver. 
Debug Mode allows you to send and receive Smart-Frame Protocol 
reports and commands to determine if the information is being 
transmitted and received properly. (See Chapter 7 for details.)
TAPI Debug Mode allows you to send and receive Smart-Frame 
Protocol reports and commands through the TAPI driver to determine if 
the TAPI driver is functioning correctly. (See Chapter 8 for details.)
Using the Menus
Some CTDIAG menus offer a mnemonic method to make a menu 
selection. If the option on a CTDIAG menu contains a highlighted letter, 
or mnemonic, you can select that option by simply typing that letter 
without pressing ENTER. For example, some CTDIAG menus accept the 
letter E as the exit command.
On some CTDIAG menus, you can use the up and down arrow keys on 
the keyboard to highlight a menu option. Once highlighted, select that 
option by pressing ENTER.
Pressing ESC on any menu returns you to the previous menu.
At the bottom of every CTDIAG menu are two lines, as shown in the 
example menu in Figure 1-1. 
• The Message line displays prompts, error messages, or brief help 
descriptions of the selected menu option. In Figure 1-1, for 
example, the Message line confirms that the type of controller was 
changed to HBC.










