Motorola DS3508, Руководство по продукции

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Scanning 2 - 7
If necessary, the digital scanner turns on its red LEDs to illuminate the target bar code.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 2-5
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 2-6 show acceptable aiming options, while the bottom examples can not be decoded.
Figure 2-6
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 DS3508-DP20005R digital scanner: Due to the
reflective nature of some surfaces used with DPM bar codes (see Figure 2-5 ), 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
DS3508-DP20005R, 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 DS3508 digital scanner,
follow the standard aiming instructions described in Aiming on page 2-6.
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