5-9
Operating the Terminal
not give specular reflection (refer to the section
on page 5-7). Likewise, the symbol
should be in good condition.
1-D/PDF417 Scanning Mode Options
There are three scanning options: aiming with a dot pattern, scanning with a slab raster
pattern, or always raster.
!
Aiming Dot Option
A trigger pull creates the single dot aiming pattern, which lasts for a fixed interval.
This dot easily can be seen in outdoor or high ambient light environments. A slab
raster pattern or an open raster pattern appears next, depending on the programmed
scanning option. There are two programmable timeout periods for this option —
normal and extended.
!
Slab Raster Option
A trigger pull creates the slab raster pattern. If the target is a 1-D bar code, the
pattern never gets beyond a slab raster. But if the target bar code is PDF417, the
pattern opens up to an optimized raster pattern as soon as the scanner is properly
aligned over the bar code.
!
Always Raster
When programmed to this option, the PDF417 scan element directly opens to a full
raster pattern whenever the trigger is pulled.
Scanning PDF417 Bar Codes
Make sure the terminal is programmed for a slab raster aiming pattern and smart raster
mode.
1. Aim the scanner at the symbol. Try to keep the nose of the scanner parallel with the
symbol’s rows.
2. Make sure the symbol you want to scan is within the scanning range; refer to the 1-
D/PDF417 decode zones. Then pull the trigger to scan.
The scan pattern first covers the symbol horizontally (
Figure 5-2. Slab Raster Pattern on a PDF417 Bar Code
Summary of Contents for PDT 7200 Series
Page 1: ...PDT 7200 Series Product Reference Guide for Windows CE 3 0 ...
Page 3: ...PDT 7200 Series Product Reference Guide for Windows CE 3 0 72 57170 01 Revision A March 2002 ...
Page 9: ...vii Contents Out To Launch B 23 Calculator B 23 About OTL B 24 Virtual Keyboard B 24 ...
Page 10: ...viii PDT 7200 Series Product Reference Guide for Windows CE ...
Page 18: ...xvi PDT 7200 Series Product Reference Guide for Windows CE ...
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