Touchscreen User Manual – Issue 1
Zytronic X-Y Controller (Serial and USB)
9
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Once the gasket has been fitted, the touchscreen should be secured on top of the gasket.
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Make sure that the active area of the touchscreen is aligned with the viewable area of the
Display and that there is no excessive flexing or mechanical movement between the
touchscreen and the Display.
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If a front bezel is to be fitted then this also must be spaced off the front of the touchscreen
using a 3mm double sided adhesive gasket. This 3mm gasket can be applied directly to the
edges of the touchscreen and the spacing must be maintained even under compression.
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For metal bezels that are fitted to the front of the touchscreen, the installer must ensure that no
metal work is directly touching the surface of the touchscreen or active area.
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Ensure that the front metal bezel and all metal work are correctly earthed to a known common
earth point using earthing straps.
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Ideally the front metal bezel aperture should be a few millimetres wider all round than the
active area of the touchscreen. It is also recommended that the software that is to be executed
in the final application should have all critical activation buttons placed as least 10mm in from
the edge of the active area of the touchscreen, as illustrated in Figure 4. Activation buttons
should also be made a significant size for ease of use by the user. Avoid placing critical
activation buttons in extreme corners or edges of the touchscreen active area.
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Having worked through this user manual and installed and set up the software, if the system
appears to be “noisy” i.e. the mouse pointer displays an unwarranted amount of random mouse
pointer movement with no applied touch, then experimentation may need to be carried out
with the spacing between the Display and touchscreen or touchscreen and metal work, i.e. the
spacing may need to be increased.
Figure 1:
Direct Touch integration with a typical front bezel which can be made
from either plastic or metal
3mm Gasket
If a front metal bezel is used,
earth the front metal bezel and
Display to a common earth point
3mm Gasket
Touchscreen
Display
Front Bezel
Side Profile