READING FEATURES
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3
For example, the DS2100 (350 scans/sec.) for a 25 mm high code moving at 500
mm/s performs:
[(25/500)
*
350] - 2 = 15 effective scans.
3.2 PICKET-FENCE MODE
If scanning is parallel to the code motion, (Figure 28), 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 28 - "Picket-Fence" scanning mode
For example, for a 50 mm wide code moving in a point where the reading field is 200
mm wide at a 1500 mm/s speed, the DS2100 (350 scans per sec.), performs:
[((200-50)/1500)
*
350] - 2 = 33 scans
Direction of code
movement at LS s
eed
Laser beam
DS2100
FW
LW
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