AccuTouch Product Guide - Elo TouchSystems

4-40 Elo Entuitive Touchmonitor
It may be necessary to cut the ribs and struts inside the bezel. Cutting these
ribs and struts does not usually cause difficulties, although the stiffness of
the bezel may be reduced slightly. Try not to cut into the posts for the CRT
attachment screws. Bezel and tube combinations that require this cut are
rare.
Generally, a total clearance between the edge of the touchscreen and any
ribs or struts of at least 1/4-inch (6 mm) in both axes is necessary. This
prevents the interference fit problem discussed above and allows for
variation in touchscreen mounting position.
The potential interference between the degaussing coil and the
touchscreen must also be evaluated. The coil will usually fit between the
touchscreen and the inside surface of the bezel, as there is typically a
natural cavity for it. If there is not enough space for the coil, you may have
to provide additional setback for the CRT. It may also be possible to
relocate the coil to the bell side of the CRT. Normally, this does not
significantly reduce the coil’s effectiveness. However, you must determine
this by inspecting the monitor for color problems after reassembly.
1 Check for adequate clearance of the cable from the bezel structure. If the
position of the cable causes difficulty, the touchscreen may be rotated 180°
only if the touchscreen is sealed and Elo drovers are used. The preferred
orientation of the AccuTouch touchscreen is with the cable exiting from the
left side, when viewed from the front of the monitor. Rotation will cause an
inversion of the output coordinates, which will be compensated for
automatically by Elo driver software, but perhaps not by other drivers. (Flat
touchscreens should have the plastic surface on the side facing the user.)
Installing the Touchscreen
CAUTION: After the touchscreen is attached to the CRT, transient protection must be in place
before applying power to the monitor. Transient protection is discussed on
page 4-46.
When preparing the touchscreen for mounting to the CRT, major considerations
are:
Reasonable mechanical alignment with the display.
A complete dust seal between the touchscreen and the CRT.
A mounting technique that evenly supports the touchscreen on at least two
opposite edges. Elo recommends double-sided tape between the touchscreen
and the CRT.