MEGAPOWER M-POINTER ML11, User Manual

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Calibration
4 points mode : standard
Touch the displayed crosshairs with the IR pen. If the device is able to
detect the signal from the pen, the crosshairs will move to the next
calibration point.
075, 0.5 and 0.3 modes : When the camera is not able to cover the whole
screen, that is the top parts of the screen is out of reach, then use these
modes. 0.75 mode, the crosshairs start to appear ¾ the way up the screen,
0.5 mode half way up and 0.3 mode 1/3 the way up.
For greater accuracy, use the 25 and 16 point calibration modes.