Motorola Symbol DS3578 Product Reference Manual page 35

2 - 6 Symbol DS3578 Digital Scanner Product Reference Guide
To scan a bar code, center the symbol in any orientation within the aiming pattern. Be sure the entire symbol is
within the rectangular area formed by the cross pattern.
1D bar code symbol
Scanning Orientation with Imager Aiming Pattern
Figure 2-3
NOTE Scanning Direct Part Mark (DPM) bar codes with the DS3578-DP20005WR digital scanner: Due to the
reflective nature of some surfaces used with DPM bar codes (see
the scanner at an angle relative to the target (Motorola recommends 25-45 degrees). For example, when
scanning a 15 mil dot peen Datamatrix bar code marked on an aluminum surface with the
DS3578-DP20005WR, present the target between two and three inches from the nose of the scanner, and
tilt the scanner at a 30 degree angle.
When scanning standard (non-DPM) bar codes with any configuration of the DS3578 digital scanner,
follow the standard aiming instructions described in
The digital scanner can also read a bar code presented within the aiming pattern but not centered. The top
examples in Figure 2-4
Acceptable and Incorrect Aiming
Figure 2-4
2D bar code symbol
Aiming Pattern
show acceptable aiming options, while the bottom examples can not be decoded.
0 1 2 3 4 5
0 1 2 3 4 5
2D dot peen DPM symbol
Figure 2-3), it may be necessary to tilt
Aiming on page 2-5.
0 1 2 3 4 5
0 1 2 3 4 5