Datalogic QLM500 Instruction Manual download pdf (Page 119)

READING FEATURES

109

Example:

The FOV for a Matrix 410 600-0x0 base using the 16 mm lens at a focus distance of 200

mm is:

FOV

= 2 [(200 mm + 35 mm) tan (24°/2)] = 100 mm

FOV

= 2 [(200 mm + 35 mm) tan (18°/2)] = 74 mm

7.2 HORIZONTAL FOV VS. READING DISTANCE DIAGRAMS

The following graphs represent the Horizontal Field of View (FOV) and Reading Distance

based on the combination of a certain sensor (Matrix 410™ base model) and a certain lens.

Each point represents the maximum achievable Field of View with the selected code

resolution (in this point DOF is limited).

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.

7.2.1 How to Use the Diagrams

1D Codes - SXGA - 25 mm, 35 mm, 50 mm

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

Reading Distance (cm)

Horizontal FOV (cm)

SXGA - 25 mm SXGA - 35 mm SXGA - 50 mm

0.25

0.20

0.25

0.30

0.33

0.38

0.25

0.50

0.30

0.33

0.38

0.50

0.33

0.30

0.15

0.10

0.15

0.10

0.20

0.15

For a given code resolution,

the blue line represents the

maximum Horizontal FOV.

The reading distance can be

selected by changing the lens.

For a given Reading Distance you must select the

lens that is able to read your code resolution.

Each point represents the maximum FOV for a given

code resolution.

You can read this resolution code with the same

lens at shorter distances but sacrificing FOV.

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 160 161

Comments to this Manuals

No comments

Datalogic QLM500 Instruction Manual Page 119

Comments to this Manuals

Related products and manuals for Bar code readers Datalogic QLM500