How does a wireless presenter with an air mouse perform pointer calibration?

I. Wireless Presenters with mouse function sometimes require calibration. The following models are involved：

N99，N99s，N89，N86，N97s，N96s，N95s，N95s Pro，N28s，N29s，N10s Pro.

II. Calibration is required in two cases：

1. The cursor moves in a certain direction until it reaches the edge of the screen while the wireless presenter didn't move.

2. When moving the wireless presenter horizontally or vertically, the cursor does not move horizontally or vertically, but moves diagonally in a certain direction.

III. How to Calibration?

1. Turn off wireless presenter, put it on a horizontal desktop.

2. Long press the Page Down Key and turn on the wireless presenter, then release the Page Down Key. You will see the indicator starts to flash. The correction is complete  when the flashing stops.

3. After calibration, the pointer no longer drifts.

IV. Calibration Methods for Special Models.

For the wireless presenter with model printing "KNORVAY N99C" 、 "KNORVAY N89" or "KNORVAY N86", Please calibrate as follows: 

Turn on the wireless presenter，put it on a horizontal desktop. Long press the "L" key and mouse key simultaneously until the indicator start to flash. Don‘t move it when it flashes. The correction is complete  when the flashing stops.