Specifications

32 MT410 Controller Reference Guide
Calibrate Extended Procedure
To use the CX command:
1. Enter the Calibrate Extended (CX) command.
The controller sends an acknowledgment of <SOH>0<CR>.
2. Touch the screen at a lower left target, which is located 12.5% (1/8) in
from the corner of the video image.
The controller returns an acknowledgment of <SOH>1<CR>. This is a
positive response. If you receive a negative response, try touching the
screen again.
3. Touch the screen at an upper right target, which is located 12.5% (1/8)
in from the corner of the video image.
The controller returns an acknowledgment of <SOH>1<CR>. If you
receive a negative response, try touching the screen again.
Touching the two valid calibration points results in a successful calibration.
If either calibration point is invalid, the calibration fails. The MT410
controller restores the factory default calibration if the Calibrate Extended
routine fails.
Response:
<SOH>1<CR>
Positive response. Indicates that the controller
received a valid touch coordinate (point) when
the target was touched. Two valid touch points
indicate a successful calibration.
<SOH>0<CR>
Negative response. Indicates that the touch
point is out of range of the expected target area.
If you receive a negative response, try touching
the target area again.
<SOH>2<CR>
Indicates that the user did not touch the target
long enough to provide an accurate calibration
point.