Reading Features; Step-Ladder Mode - Datalogic DS2200 Reference Manual

3
3

READING FEATURES

The number of scans performed on the code by the DS2200 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
At least 5 scans during the code passage should be allowed to ensure a successful
read.
3.1

STEP-LADDER MODE

DS2200
If scanning is perpendicular to the code motion direction (Figure 16), the number of
effective scans performed by the reader is given by the following formula:
These symbols signify:
SN =
LH =
LS =
SS =
16
Figure 16 - "Step Ladder" scanning mode
SN = [(LH/LS) * SS] - 2
number of effective scans
label height (in mm)
label movement speed (in mm/s)
number of scans per second
Direction of code
movement at LS speed
LH
Laser beam
DS2200