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Appendix J

A-28 MS-880 Industrial Long Range Scanner User’s Manual

Appendices

Appendix J — 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 ±5° to avoid specular reflection, the

return of direct, non-diffused light.

For the MS-880, specular reflection is avoided

by pitching labels at least 5° plus or minus from a line perpendicular to the default

position of the Bottom Offset and Top Offset.

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-5 Scanner/Label Position

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Microscan MS-4X Manual do Utilizador Página 284