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.
Figure 2-3
Scanning Orientation with Imager Aiming Pattern
The digital scanner can also read a bar code presented within the aiming pattern but not centered. The top
examples in Figure 2-4 show acceptable aiming options, while the bottom examples can not be decoded.
Figure 2-4
Acceptable and Incorrect Aiming
1D bar code symbol
2D bar code symbol
2D dot peen DPM symbol
Aiming Pattern
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 Figure 2-3), it may be necessary to tilt
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 Aiming on page 2-5.
0123 45
0123 45
0123 45
0123 45
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