Datalogic DS1100 SH2347 Manual de Instalação descarregar pdf (Página 29)

DATALOGIC DS1100

Reading Features - 3.1

3 READING FEATURES

The number of scans performed on the code by the DS1100 and therefore

the decoding capability is influenced by the following parameters:

•

number of scans per second

•

code motion speed

•

label dimensions

•

scan direction in respect to code motion

Typically, 5 scans should be allowed during the code passage to ensure a

successful read.

3.1 STEP-LADDER MODE

Code motion direction

at LS speed

Laser beam

Figure 3.1 - "Step-ladder" scanning mode

If scanning is perpendicular to the code motion direction (Figure 3.1 - "step-

ladder" mode), 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 DS1100 (350 scans/sec.) for a 25 mm high code moving at

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 37 38

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Datalogic DS1100 SH2347 Manual de Instalação Página 29