READING FEATURES
3
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.
3.2 PICKET-FENCE
MODE
Direction of code
movement at LS speed
Laser beam
DS2200
LW
FW
Figure 17 - "Picket Fence" scanning mode
If scanning is parallel to the code motion, (Figure 17), the number of effective scans
is given by:
SN = [((FW-LW)/LS) * SS] -2
These symbols signify:
SN
= number of effective scans
FW
= reading field width (in mm)
LW =
label
width
(in
mm)
LS
= label movement speed (in mm/s)
SS
= scans per second
For example, for a 50 mm wide code moving in a point where the reading field is 100
mm wide at a 1000 mm/s speed, the DS2200 (500 scans per sec.), performs:
[((100-50)/1000) * 500] - 2 = 23 scans
17
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