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Appendix I

A-24 MS-820 Industrial Bar Code Scanner User’s Manual

Appendices

Appendix I — Position Scanner and Bar Code

In positioning the scanner in relation to the bar codes being scanner, consider the fol-

lowing:

• Position the scanner in a place devoid of sunlight, bright lights, or laser light from

other sources.

• Avoid excessive tilt, skew, or pitch. Maximum tilt is determined by label characteris-

tics and the number of decodes required. Maximum skew is ±40°; maximum pitch

is ±50°.

• Pitch or skew label or scanner a minimum of ±15° to avoid specular reflection, the

return of direct, non-diffused light.

1. Maximum tilt is determined by label characteristics and number of decodes required.

2. The specular reflection zone is a narrow zone straight out from the scanner in which direct

reflected light from a label can distort the scanner’s ability to distinguish bars from spaces.

Scanner

Direction

of travel

Pitch

axis

Tilt

axis

Skew

axis

Figure A-6 Scanner/Symbol Position

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Microscan MS-820 Bedienungsanleitung Seite 198