Aiming options, Aiming options -5, Read can be obtained from many positions; see – Honeywell DOLPHIN 9951 User Manual
Page 45: Center the aiming beam over the bar code; see

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Aiming Options
The aiming beams are smaller when the terminal is held closer to the code and larger when it is farther
from the code. Symbologies with smaller bars or elements (mil size) should be read closer to the unit
whereas symbologies with larger bars or elements (mil size) should be read farther from the unit.
5100 Green Aiming Beam
5300 Red High-Vis Aiming Pattern
If your Dolphin terminal is configured with a 5300 imager, high-vis aimers frame the bar code for more
intuitive aiming.
Linear Bar Code
2D Matrix Symbol