Datalogic Jet Manual do Utilizador descarregar pdf (Página 44)

1 MEMOR™ X3

When beams reflect directly back into the scanner from the bar code, they can “blind”

the scanner and make decoding difficult.

To avoid this, don’t keep the terminal perpendicular to the barcode: moving it of a

small angle of ±2° is usually enough to enable proper reading. But don’t scan at too

oblique an angle either: keep the scanner within an angle of ±30° from the

perpendicular to the barcode in order to guarantee effective scanning.

Side Views

Specular reflection.

Reflected beam

is within specular

dead zone and

prevents decode.

No specular reflection.

Decode can occur.

Tilt Bar Code At Slight Angle (Up to 30°)

Light

Source

Light

Source

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Datalogic Jet Manual do Utilizador Página 44