C Usage Tips - Socket Secure Digital Scan Card Series 3 User Manual

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Practice to determine the best scanning angle and distance for your type of bar code.
Aiming Beam
Aim the scanner so that the red beam covers the entire width of the bar code.
Scan Angle
For best results with the laser-based SD Scan Card, position the scanner at an angle to
the bar code, at least 15° from perpendicular. Otherwise, light can bounce back into
the scanner and "blind" the sensing mechanism.
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