Direction of code
movement at LS speed
Laser beam
BARCODE
SCANNER
LH
Figure 38. "Step-Ladder" Scanning Mode
For example:
TCNM-EX (800 scans/sec.) for a 25 mm high code moving at 1250 mm/s performs: [(25 ÷ 1250) × 800] – 2 = 14
effective scans
TCNM-AD (500 scans/sec.) for a 25 mm high code moving at 1000 mm/s performs: [(25 ÷ 1000) × 500] – 2 = 10
effective scans
9.2.2 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
TCNM AD/EX Barcode Scanner
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