Motorola LS4208 用户手册
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Symbol LS4208 Product Reference Guide
Scan Patterns
The scanner emits several scanning patterns, described as follows. To select a pattern, see
.
Single-Line Only
The laser has no up and down scan line movement (no raster).
Figure 2-2
Single-Line Only Scan Pattern
Multi-Line Smart Raster
The scan line begins as a single line and moves up and down (rasters) when a partial scan of a bar code is
detected, or no bar code is decoded 500 ms after the trigger is pulled. If the scanner detects a PDF417
(Symbol LS4208-PR only), GS1 DataBar, or Composite Code, it immediately rasters, opening to a full, optimized
raster pattern as soon as the scanner is properly aligned over the bar code.
detected, or no bar code is decoded 500 ms after the trigger is pulled. If the scanner detects a PDF417
(Symbol LS4208-PR only), GS1 DataBar, or Composite Code, it immediately rasters, opening to a full, optimized
raster pattern as soon as the scanner is properly aligned over the bar code.
Figure 2-3
Multi-Line Smart Raster Scan Pattern
Multi-line Always Raster
Rastering (up and down scan line movement) begins immediately to decode 1D, PDF417 (Symbol LS4208-PR
only), GS1 DataBar, and Composite Codes.
only), GS1 DataBar, and Composite Codes.
Figure 2-4
Multi-Line Always Raster Scan Pattern
Single Scan Line Pattern
Open Raster Pattern
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Horizontal Displacement (X - Axis)