Motorola DS6878 Product Reference Manual page 49

To scan a bar code, center the symbol in any orientation within the aiming pattern. Ensure the entire symbol is
within the rectangular area formed by the cross pattern.
1D bar code
Scanning Orientation with Imager Aiming Pattern
Figure 2-4
The digital scanner can also read a bar code presented within the aiming pattern but not centered. The top
examples in Figure 2-5 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 2-5
2D bar code
Symbol
Aiming Pattern
0 1 2 3 4 5
0 1 2 3 4 5
Scanning 2 - 7