Metrologic Instruments IS4823 - Manual (Page 20)

16
Scan Engine Field of View and Depth of Field
Field of View ’
Distance from Engine Face ’’ Width of Field of View
50 mm (2") 57 mm (2.2")
254 mm (10") 264 mm (10.4")
’ See page 9 for detailed information on the engine's exit beam specifications.
’’ Based on a .33 mm (13.0 mil) bar code.
Figure 14. Typical Field of View
Depth of Field vs. Minimum Bar Code Element
Depth of Field*
(In the Field of View) Bar Code
Element Width
Start
(From Engine Face)
End
(From Engine Face)
Total
.13 mm 5.2 mil 70 mm (2.75") 95 mm (3.75") 25 mm (1.00")
.19 mm 7.5 mil 57 mm (2.25") 171 mm (6.75") 114 mm (4.50")
.26 mm 10.4 mil 50 mm (2.00") 210 mm (8.25") 160 mm (6.25")
.33 mm 13.0 mil 50 mm (2.00") 254 mm (10.00") 204 mm (8.00")
1D
.49 mm 19.5 mil 75 mm (2.95") 300 mm (11.81") 225 mm (8.86")
* For non-decode IS4813 and IS4815 engines, depth of field data is for reference only. Actual values may vary
depending on environmental conditions, host hardware, and decoding software.
Depth of field data was measured at 25°C under typical indoor lighting. Performance may vary depending on
testing conditions.
Specifications are subject to change without notice.