PSC LazerData 12000 Series, Installation Manual

Page: 46 / 58

Installation Manual LazerData
®
12000 Scanner
Reading Features - 3.1
3 READING FEATURES
The number of reads performed by the LazerData 12000 Scanner and, therefore,
the decoding capacity, is directly affected by the following factors:
•
scans per second
•
code motion speed
•
label dimensions
•
scan direction with respect to code motion
At least five scans should be made of each bar code symbol, as it passes the
scanner, to ensure a successful read.
3.1 STEP LADDER MODE
12000 Scanner
Code Motion moving
at LS speed
Laser Beam
LH
Figure 3.1 - "Step Ladder" scanning mode
If scanning is perpendicular to the code motion direction (Figure 3.1 - "step ladder"
mode), 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 or inches)
LS = label movement speed (in mm/s or inches/s)
SS = number of scans per second