TouchWare for Windows User's Guide - Touch Screens Inc.

52 TouchWare for Windows User's GuideAdjusting ThruGlass Video ResolutionMicroTouch recommends that you adjust the desired video resolution andscan rate before you configure the touchscreen. Adjusting the videoresolution after configuring the touchscreen can cause touch to be erratic.If you change the video resolution or scan rate after configuring thetouchscreen, you will see a message advising you to reselect your screentype in order to automatically configure the sensitivity and frequency. Ifyou change only the scan rate on a Windows 95 system, this message willnot appear. You must manually reset the screen type by selecting None andthen the screen type.Alternatively, you can adjust the controller frequency by selecting the AutoFrequency button from the Diagnostics screen.Values for each video resolution are stored in the system registry so youneed only do this once for each video resolution setting.ThruGlass TroubleshootingThe ThruGlass touchscreen should be sensitive to your touch and recognizea light touch. If not, you may be experiencing one of the followingproblems:• If the controller responds or the cursor moves before you actually touch the firstsurface — decrease sensitivity.• If you need to press hard or use more than one finger to activate a touch —increase sensitivity.• If the cursor is erratic or jittery — adjust the controller frequency.• If the controller is registering random touch points — adjust the controllerfrequency.• If the cursor does not reach the edges of the video image — recalibrate thetouchscreen.• If the cursor is not located underneath your finger — recalibrate thetouchscreen.Multiple ThruGlass TouchscreensDepending on your application, you may want to use more than onetouchscreen with your system. TouchWare can support up to fourThruGlass touchscreens. Also, you can include a combination of touchmonitors and standard (non-touch) monitors with your system.