DS2400
30
3
For example, the DS2400 (800 scans/sec.) for a 25 mm high code moving at 1250
mm/s performs:
[(25/1250)
*
800] - 2 = 14 effective scans.
3.2 PICKET-FENCE MODE
If scanning is parallel to the code motion, (Figure 34), the number of effective scans
is given by the following formula:
SN = [((FW-LW)/LS)
*
SS] -2
Where: 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
Figure 34 - "Picket-Fence" scanning mode
For example, for a 100 mm wide code moving in a point where the reading field is
200 mm wide at a 2000 mm/s speed, the DS2400 (800 scans per sec.), performs:
[((200-100)/2000)
*
800] - 2 = 38 scans
Direction of code
movement at LS speed
LW
Laser beam
DS2400
FW
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