Dolphin 9500 Manual page 32

Refer to the following chart for beam angle information
Linear bar code 2D Matrix symbol
The aiming beam is 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. Symbologies with larger bars or elements (mil size)
should be read farther from the unit.
Dolphin® 9500/9550 Mobile Computer User's Guide 4 - 3