Motorola MT2070 User Manual page 161

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 3-3
NOTE Scanning Direct Part Mark (DPM) bar codes with the MT2070-DP scanner: Due to the reflective nature of
some surfaces used with DPM bar codes (see
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, 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 scanner, follow the standard
aiming instructions described in
The device can also read a bar code presented within the aiming pattern but not centered. The top examples in
Figure 3-4 show acceptable aiming options, while the bottom examples can not be decoded.
0 1 2 3 4 5
0 1 2 3 4 5
Acceptable and Incorrect Aiming
Figure 3-4
2D bar code symbol
Aiming Pattern
Figure
Aiming on page 3-4.
0 1 2 3 4 5
0 1 2 3 4 5
2D dot peen DPM symbol
3-3), it may be necessary to tilt the scanner at an
Scanning 3 - 5