Note

Detailed configuration and commissioning data is contained in the “Manual for Configuration, Assembly and Service”.

Transmission window

The reader generates an inductive alternating field. The field is at its strongest near the antenna and declines considerably as the distance from the antenna increases. The distribution of the field depends on the structure and geometry of the antennas in the reader and transponder.

A prerequisite for the function of the transponder is a minimum field strength at the transponder that is achieved at a distance S_g from the reader. The picture below shows the transmission window between the transponder and reader:

S_a: Operating distance between transponder and reader

S_g: Limit distance (maximum clear distance between upper surface of antenna and transponder, at which the transmission can still function under normal conditions)

L: Length of a transmission window

SP: Intersection of the axes of symmetry of the transponder

The transmittable quantity of information between reader and transponder depends on:

• the speed at which the transponder passes the antenna ("passing speed")
• Length of the inductive alternating field of the reader, through which the transponder moves ("transmission window").

Communication between reader and transponder

Communication between the reader and transponder is asynchronous.

Traversing speed for SLG D1x / ANT Dx
(with one transponder in the field)

All values in the table in m/s