Picket fence mode – Datalogic Scanning DS4600A User Manual

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DS4600A

3

If scanning is perpendicular to the direction of the code movement (Figure 31), the
number of effective scans performed by the reader is given by the following formula:

SN = [(LH/LS) * SS] - 2

These symbols signify:

SN =

number of effective scans

LH =

label height (in mm)

LS =

label movement speed (in mm/s)

SS =

number of scans per second


For example, the DS4600A (800 scans/sec.), for a 25 mm high code moving at 1250
mm/s performs:

[(25/1250) * 800] - 2 = 14 effective scans.


3.2.2

Picket Fence Mode

Direction of code
movement at LS speed

DS4600A

Laser beam

LW

FW

Figure 32 - "Picket Fence" scanning mode

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