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).
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 (P/N
Specifications are subject to change without notice.
Figure 3. Depth of Field (SR)
Depth of Field
Paper Labels (SR decoded model, Code 39)
SCANNER | 5 mil |
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7.5 mil |
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FRONT |
| 10 mil |
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| 15 mil |
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| 20 mil |
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| 40 mil |
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| 55 mil |
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| FEET |
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0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 | 160 | 170 |
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| CENTIMETERS |
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User’s Guide | 7 |