
19
9165
201
3-
06
24
OIT***-F113-B12-CB*
Commissioning
Setting image sharpness
In order to optimize image sharpness, proceed as follows:
1. Unscrew the enclosure cover.
2. Loosen the first screw on the lens (see Position 1).
3. Position the focus ring on the lens by using the screw (see Position 2).
4. Check the image sharpness by means of the Live-image function in
OITControl (see "Set up OIT system with live image" on page 41). The edges
of the holes in a code sheet should be reproduced as sharply as possible.
5. Screw 3 and ring 4 do not normally need to be moved. These adjust the
aperture of the lens. This only needs to be done for very fast code sheet
movements, even when changes to the camera-shutter time and camera gain
in OITControl do not lead to the desired results. (Read-only tag too dark)
Figure 6.2
Focusing the image
6. Once the image sharpness has been correctly set, gently tighten the screws
on the lens.
7. Screw the enclosure cover back down.
The following inages show a picture with high contrast between hole and metal
plate at optimal lighting through the LED board, and correctly adjusted image
sharpness as well as a too highly illuminated image and incorrect adjustment of
the code sheet (the lighting comes back out of the holes).
Note!
The device is preset. Image sharpness should only be adjusted if the image in
OITControl is not optimal.