Datalogic DS2200 SH2348, Installation Manua, Page: 23 / 28

DS2200 DATALOGIC
14 - Reading Features
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
Code motion direction
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
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
For example, the DS2200 (500 scans/sec.) for a 25 mm high code moving at
500 mm/s performs:
[(25/500) * 500] - 2 = 23 effective scans.