READING FEATURES
4
4.2.2 Picket-Fence Mode
If scanning is parallel to the code motion, (Figure 42), 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
Direction of code
movement at LS speed
LW
Laser beam
FW
DS2400N
Figure 42 - "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 DS2400N (800 scans per sec.), performs:
[((200-100)/2000)
*
800] - 2 = 38 effective scans
59
To Next Page
Loading...
