Datalogic DS1500 Troubleshooting Guide download pdf (Page 43)

READING FEATURES

3.2.2 Picket-Fence Mode

If scanning is parallel to the code motion, 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 25 - "Picket-Fence" Scanning Mode

For example, for a 60 mm wide code moving in a point where the reading field is 100

mm wide at a 1500 mm/s speed, the DS1500 (1200 scans per sec.), performs:

[((100-60)/1500)

1200] - 2 = 30 effective scans

Direction of code movement

at LS speed

Laser beam

DS1500

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 63 64

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Datalogic DS1500 Troubleshooting Guide Page 43