READING FEATURES
3
3 READING
FEATURES
The number of scans performed on the code by the DS1100 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
Typically, 5 scans should be allowed during the code passage to ensure a successful
read.
3.1 STEP-LADDER
MODE
Direction of code
movement at LS speed
DS1100
LH
Laser beam
Figure 20 - "Step-Ladder" Scanning Mode
If scanning is perpendicular to the code motion direction (Figure 20), the number of
effective scans performed by the reader is given by the following formula:
SN = [(LH/LS) * SS] - 2
These symbols signify:
SN = number of effective scans
LH = label height (in mm)
LS = label movement speed (in mm/s)
SS = number of scans per second
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