The vertical line flashes briefly and then changes to the underside
of the horizontal line.
> Now place the intersection of the two lines at the lower edge
of the target to be measured and press the menu button again
(step 2).
The distance to the target is then displayed in the upper left corner
of the image.
Step 1
Please note: The precision of the distance measurement depends
primarily on the correspondence between the defined and the
actual target size and on the smoothness of the hand during the
measuring process. The sizes of the pre-configured targets are only
indicative and may vary.
16. BLIND PIXEL CORRECTION
If a pixel error occurs permanently despite calibration and restart,
it can be corrected as follows:
> Select the menu item Blind Pixel Correction and open it.
> Press the menu button to set the step size of the cursor adjust-
ment to select the faulty pixel (step size 1, 5 or 10 pixels).
> Press the menu or picture/video button to select the direction of
movement of the cursor (left, right, up, down).
> Move the cursor to the missing pixel step by step using the menu
button.
An enlarged view of the selected pixel is shown in the lower right
corner of the display. If the faulty pixel is covered by the menu
display, the display can be mirrored by pressing and holding the
picture/video button.
> When the pixel is selected, correct it by a pressing and holding
the picture/video button.
The number of corrected pixels is displayed at the bottom of the
image.
> Close the menu with a long press of the menu button.
17. HOT SPOT TRACKING
When hot spot tracking is activated, a green crosshair appears
tracking the hottest object on the screen.
CHALLENGER-15 · Operating Manual 03 / 2021
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