Datalogic 4420 Instructions d'exploitation télécharger pdf (Page 37)

Scanning Bar Codes

Quick Reference Guide

Figure 27. Laser Beam Positions

5. The device beeps and the green LED indicator comes on until the trig-

ger is released. The green LED and the beep tone indicate a good read.

6. The bar code data is entered in the current application.

7. Once a bar code is read successfully, the scanner turns off automatically.

Refer to the section on Scanner Configuration in the PRG to modify the

default settings.

Correct Scanning Positions

Incorrect Scanning Positions

Ideal positioning

A bit high, will read correctly

A bit angled, will read correctly

Positioned too far to the right. Will

not read entire bar code.

Too angled; cannot read the

entire bar code.

Bar code will not read. The

scanner should be posi-

tioned perpendicular to

the bar code bars.

If the bar code scan failed, adjust the reading angle or distance. Make sure that

the laser beam scans across all bars of the bar code. Refer to

Figure 27.

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Datalogic 4420 Instructions d'exploitation Page 37