READING FEATURES
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3
3 READING FEATURES
The number of scans performed on the code by the DS2400 and therefore the
decoding capability is influenced by the following parameters:
• number of scans per second
• code motion speed
• label dimensions
• scan direction with respect to code motion
About 5 scans during the code passage should be allowed to ensure a successful
read.
3.1 STEP-LADDER MODE
If scanning is perpendicular to the code motion direction (Figure 33), the number of
effective scans performed by the reader is given by the following formula:
SN = [(LH/LS)
*
SS] – 2
Where: SN = number of effective scans
LH = label height (in mm)
LS = label movement speed
in (mm/s)
SS = number of scans per second
Figure 33 - "Step-Ladder" scanning mode
Direction of code
movement at LS speed
LH
Laser beam
DS2400
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