Allflex AFX-100 Manual de usuario descargar pdf (Pagina 18)

Rev Australasia V2.3 12/04

18 18

computer displays, for example, can interfere with the transmission and reception of RFID

signals, and consequently reduce reading distance.

Eartag/Reader Interference - Multiple eartags within the sensing range of the reader, or other

readers emitting excitation energy in the immediate vicinity can adversely affect the reading

performance or prevent operation of the Panel Reader.

Panel Reader Read Zone Geometry

The read zone is the 3-dimensional space within which an eartag can be read when held in a

static and optimum orientation. Figure 5 approximates the Panel Reader’s read zone in a 2-

dimension perspective, as viewed from either the side or top, and illustrates eartag orientation

for maximum and null reading. Optimum read distance is achieved when the Panel Reader’s

magnetic field lines intersect the surface of the eartag perpendicularly. More practicably, the

eartag’s read range is maximized when the eartag’s axis is perpendicular to the midpoint of

the Panel Reader’s flat surface. As the eartag is shifted from midpoint toward an edge of the

Panel Reader, maximum read distance is usually achieved by tilting the eartag so as to

maintain perpendicularity with the magnetic field lines as shown in the diagram below.

Panel Reader Read Zone and Tag Orientation

Eartag

Optimum Orientation

Eartag

Optimum Orientation

Eartag

Null Orientation

Eartag

Null Orientation

Eartag

Oblique Orientation

Antenna Coil

Winding

Panel Reader

(Top Cutaway

View)

Magnetic

Field Line

Read Zone

Boundary

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Allflex AFX-100 Manual de usuario Pagina 18