Video
Alignment (Calibration)
Video alignment or calibration as
it is also called, ensures that the mouse cursor appears at the position of
touch.
Elo uses a three-point
calibration sequence that will accept touchscreens with any orientation of the
X or Y axis, in landscape or portrait mode.
Once calibrated, the touchscreen
will be ready to use automatically each time the system is restarted.
Options to
Launch
The video alignment program may
be launched six different ways:
-
During setup a checkbox may be
selected to run the alignment program automatically after setup is completed.
-
Via the Elo Control Panel
application by selecting the General tab and clicking the alignment program
icon.
-
Via the Elo Control Panel
application by selecting the Properties tab for the individual monitor and
clicking the alignment program icon.
-
By clicking the Elo icon in the
window task bar at the bottom right of the display and selecting the video
alignment option from the dialog list.
-
By double clicking the Elo icon
in the Windows task bar at the bottom right of the display. This will bring up
the Elo Control Panel application and the alignment program may be run via
option two or three listed above.
-
By running EloVa.exe directly
from the Windows command line or \Windows\System32 directory.
-
By calling EloVa.exe directly
from an application.
Running
the Alignment Program
When you run EloVA using one of
the options above, touch the three targets as they appear.
You will then be asked to touch
various points on the screen to verify that the cursor appears at the position
touched. If the cursor appears at the position touched, click the green arrow.
If the cursor does not appear at the position touched, click the blue curved
arrow and the alignment program will run again.
If you are using multiple
monitors the alignment program will run on each individual monitor. If one of
the monitors is not a touchmonitor, Press the Esc key on the keyboard and the
alignment program will advance to the next monitor, or wait until the program
times out as indicated by completion of the progress bar.
Landscape/Portrait
Mode
EloVA may be run in either
landscape or portrait mode.
Unusual
Combinations of Expanded Desktop with Multiple Monitors
Unusual multiple monitor
combinations may create an expanded Windows desktop that is not recognized by
the default video resolutions built into the EloVA program. For this reason, an
auxiliary file, EloVideo.txt, is available to supplement the defaults.
If you are running an expanded desktop multiple monitor resolution that is not
multiples of standard monitor resolutions, you may experience difficulties in
calibrating all of your monitors properly. Contact Elo Applications Engineering
for availability and details of the use of this file.
Target
Locations on the Screen
When a touchscreen is mounted on
to a monitor and the touch targets for calibration are not visible, target
locations can be defined in an auxiliary file.
Target locations for every
monitor can be defined in a configuration file, EloTarget.conf. Contact Elo
Application engineering for availability and details of the use of this file.
Video
Alignment for 5000 or 5010 Capacitive Touchscreens
Video alignment for capacitive
touchscreens follows a different procedure than that of the standard Elo video
alignment. When running EloVa using one of the options above, the standard
video alignment touch target window will appear on the screen. Once the first
target is touched, the screen will change informing the user not to touch the
screen.
Once the initialization has been
complete, the user should touch the screen. Data is now being collected.
Continue to touch the screen until notified.
Follow the same procedure for all
3 targets as they appear.
Confirm the alignment by touching
various locations on the screen and verifying that the cursor appears in the
position touched. If the cursor appears at the position touched, click the
green arrow. If the cursor does not appear at the position touched, click the
blue arrow and the alignment program will run again.
If you are using multiple
monitors the alignment program will run on each individual monitor. If one of
the monitors is not a touchmonitor, Press the Esc key on the keyboard and the
alignment program will advance to the next monitor, or wait until the program
times out as indicated by completion of the progress bar.
Note: Acoustic Pulse Recognition (APR)
is factory calibrated. Video alignment or calibration not required in single
monitor configuration. In order for the Edge Acceleration Tool and the multiple
monitor configuration to work correctly, Video Alignment needs to be done at
first.