Datalogic PowerScan XLR Guide de l'utilisateur télécharger pdf (Page 13)

User’s Guide 7

Scanning Range

There are currently four different model types for this scanner.

Depending upon the model type of your scanner, you’ll need to hold

the unit at a given distance from the bar code to achieve optimum

scanning results. The following diagrams provide range of field infor-

mation for each of the models when scanning grade A, Code 39 bar

codes: Standard Range (SR), High Density (HD), Long Range (LR)

and Extra Long Range (XLR).

Figure 3. Depth of Field (SR)

NOTE

In the context of the illustration below, a "mil" repre-

sents the minimum bar code element width. Mea-

surements are based on SR models set with the

standard 28° scan width (as opposed to the Half

Angle setting of 14°). Reference the PowerScan Pro-

gramming Manual for more information about the

Half Angle feature.

Specifications are subject to change without notice.

Depth of Field

Paper Labels (SR decoded model, Code 39)

20 mil

15 mil

10 mil

5 mil

CENTIMETERS

FEET

FRONT OF SCANNER

12345

20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170

40 mil

7.5 mil

55 mil

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

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Datalogic PowerScan XLR Guide de l'utilisateur Page 13