Datalogic Matrix 400 Reference Manual page 23

RAPID CONFIGURATION
2. Remove the lens cover in order to focus the reader and loosen the two Locking Knobs on
the lens.
Adjust the Focus ring to the "Far position" and the Diaphragm ring to the "F4"
setting which is the preferred setting for installation.
Place the Grade A Barcode Test Chart in front of the reader at the correct reading
distance (see step 3 and the Optical Accessory Selection table in the par. 7.1).
3. Press the "Positioning" button. The reader continuously acquires images and gives visual
feedback in the view image window. Select the largest code from the chart that
completely fits into the view image window. Move the reader (or code) to center it. The
code must be aligned across the X-axis reference line at the center of the FOV. See
figure below.
Press the Positioning button again to stop positioning.
2
For far reading distances, the Diaphragm ring can be set to values between F2 and F4 to increase image lighting.
3
1
2
number
13