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2020/4820/4820 i User’s Guide
Reading Techniques
The image scanner has a view finder that projects a bright green aiming beam
that corresponds to the image scanner’s horizontal field of view. The aiming
beam should be centered over the barcode, but it can be positioned in any
direction for a good read.
The aiming beam is smaller when the image scanner is 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. To read single
or multiple symbols (on a page or on an object), hold the image scanner at an
appropriate distance from the target, pull the trigger, and center the aiming beam
on the symbol. If the code being scanned is highly reflective (e.g., laminated), it
may be necessary to tilt the code up 15° to 18° to prevent unwanted reflection.
Linear barcode
2D Matrix symbol
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