Datalogic QLM700 Manual de Instruções descarregar pdf (Página 92)

MATRIX 300™ REFERENCE MANUAL

6 READING FEATURES

6.1 FOV CALCULATION

Referring to Figure 74 and the formula below, use the data in the following table to calculate

the FOV for your application.

Model

Lens

Viewing Angle

Horizontal

Viewing Angle

Vertical

Viewing Angle

Diagonal

Min Reading Distance

Matrix 300 4x2-0xx

9 mm liquid

14 mm

40°

32°

50°

Matrix 300 4x1-0xx

6 mm fixed

7 mm

66°

55°

80°

The viewing angle has a tolerance of  1° depending on the reading distance.

FOV

= 2 (d + d

) tan (

/2)

where:

FOV

= horizontal, vertical or diagonal FOV



= horizontal, vertical or diagonal viewing angles.

d = reading distance (from window surface to code surface)

= reading distance offset (from center of lens to window surface)

FOV

plane



Figure 74 – Reading Distance References

Example:

The FOV for a Matrix 300 412-0xx at a reading distance of 200 mm is:

FOV

= 2 [(200 mm + 14 mm) tan (40°/2)]  156 mm

FOV

= 2 [(200 mm + 14 mm) tan (32°/2)]  123 mm

NOTE: The following diagrams are given for typical performance at 25°C

using high quality grade A symbols according to ISO/IEC 15416 (1D code)

and ISO/IEC 15415 (2D code) print quality test specifications. Testing should

be performed with actual application codes in order to maximize the

application performance.

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