PSC LazerData 12000 Series, Installation Manual

Page: 47 / 58

LazerData
®
12000 Scanner Installation Manual.
3.2 - Reading Features
For example, the LazerData 12000 Scanner (800 scans/sec.), for a 25-mm high
code moving at 1250 mm/s performs:
SN = [(25/1250) * 800] - 2 = 14 effective scans
3.2 PICKET FENCE MODE
Laser Beam
12000 Scanner
Code Motion
moving at LS speed
LW
FW
Figure 3.2 - "Picket Fence" scanning mode
If scanning is parallel to the code motion, (Figure 3.2 - "picket fence" mode), the
number of effective scans is given by
SN = {[(FW-LW)/LS] * SS} - 2
where,
SN = number of effective scans
FW = reading field width (in mm or inches)
LW = label width (in mm or inches)
LS = label movement speed (in mm/s or inches/s)
SS = scans per second
For example, for a 50-mm wide code moving in a point where the reading field is
250 mm wide at a 1500 mm/s speed, the LazerData 12000 Scanner (800 scans/s),
performs:
SN = [((250-50)/1500) * 800] - 2 = 104 effective scans