Datalogic Matrix 320 Product Reference Manual page 73

Matrix 320 is able to decode code labels at a variety of angles; however significant
angular distortion may degrade reading performance.
When mounting Matrix 320, take into consideration these ideal label position angles:
Pitch or Skew 10° to 20° and Tilt 0°.
Since Matrix 320 is omni-directional on the code plane, the Pitch and
Skew angles have the same significance with respect to the code plane.
However in some advanced code reading applications performance can
NOTE
be improved by modifying the Skew angle.
The Pitch, Skew and Tilt angles are represented in Figure 42. Follow the suggestions
below for the best orientation:
Position the reader in order to avoid the direct reflection of the light emitted by the
Matrix 320 reader; it is advised to assure at least 10° for the Skew angle.
Pitch
No Pitch,
Minimize
Tilt or Skew
In some cases, such as low contrast or low illumination, it can be useful to use a Pitch or
Skew angle = 0°.
The Tilt angle is also represented in Figure 42. Matrix 320 can read labels with any tilt
angle. Keep in mind however, that since linear barcodes are rectangular, the reader
should be aligned to fit them into the horizontal FOV.
See
Chapter 6, Reading Features
Tilt
any angle
inside FOV
Figure 42 - Pitch, Tilt, and Skew Angles
for FOV vs. Reading Distance considerations.
MOUNTING AND POSITIONING MATRIX 320
Skew
assure at least 10°
PRODUCT REFERENCE GUIDE
59