Scanning 2 - 7
DS3508-SR/HD/DP Aiming
When scanning, the DS3508-SR/HD/DP projects a red laser aiming pattern which allows positioning the bar code
within its field of view. See Decode Ranges on page 2-9 for the proper distance to achieve between the digital
scanner and a bar code.
Figure 2-5
DS3508-SR/HD/DP Aiming Pattern
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 2-6
Scanning Orientation with Aiming Pattern
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 2-6), 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 Data matrix 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 DS3508-SR/HD/DP Aiming on page 2-7.
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