APPENDIX H: NEW FEATURES
61
Enhanced Elo Touch Screen Support/Calibration
(v2.3)
In Firmware v2.0 Generic HID device support was added. This allowed touch screens (which
could operate using OS native HID support) to be used through the extender in a basic mode.
However, the extender cannot utilise any vendor driver supplied with a touch screen for
calibration/enhanced options etc. Operation in basic mode may not be suitable for all
applications.
We have found that many ELO Touch screens require calibration to scale reports to the full
screen area, and also correct X or Y-axis reversal. For example, you might touch the upper
right-hand corner and the cursor will move to the lower right-hand corner, or the cursor may
not move exactly to the location you touch.
Calibration and axis reversal is normally sorted out in the calibration sequence via the vendor
driver. When operating through the extender the vendor calibration routine is not available
and so the following command has been added to effect basic calibration.
You first need to register the ELO Touch Screen with the extender system:
1.
Connect the ELO monitor and a keyboard to the Remote Unit
2.
Enter Command Mode: <Left Control> + <Left Shift> + <F10>
3.
Enter the Device Registration command <Left Control> + <F4>
4.
The extender will now re-enumerate and allow basic touch screen operation
Note:
See Generic HID Device Support (above) for further information regarding
generic HID device support.
The cursor should now move as you touch the Elo monitor. However, the direction of
movement may be reversed, and the cursor might not travel over the entire screen area.
Calibration
You now need to calibrate the touch screen:
1.
Enter Command Mode: <Left Control> + <Left Shift> + <F10>
2.
Enter the ELO Calibration command: <Left Control> + <F5>
3.
The KB LEDs will flash twice and then stay lit.
4.
Touch the ELO screen once right in the
UPPER
LEFT-HAND CORNER
See Note
(do this within 10 seconds).
5.
The KB LEDs will clear.
6.
After a second the KB LEDs will flash twice and stay lit.
7.
Touch the ELO screen once right in the
LOWER RIGHT-HAND CORNER
See Note
(do this within 10 seconds).
8.
The KB LEDs will clear and then flash twice after a second if the calibration was
successful.
9.
The extender will now quit Command Mode.
10.
The touch screen is now calibrated and any reversed axes are automatically
adjusted.
Summary of Contents for ServSwitch ACU6001A
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