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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 (P/N R44-1840) for more informa-
tion about the Half Angle feature.
Specifications are subject to change without notice.
Depth of Field
Paper Labels (SR decoded model, Code 39)
0
20 mil
15 mil
10 mil
5 mil
CENTIMETERS
FEET
FRONT OF SCANNER
10
12345
20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
40 mil
7.5 mil
55 mil