Planning Application; Minimum Mounting Clearances Of Two Readers; Antenna Diagram For Rf620R (Etsi) - Siemens SIMATIC RF600 System Manual

5.2.2

Planning application

5.2.2.1

Minimum mounting clearances of two readers

The RF620R has a circular polarized antenna. At 500 mW ERP radiated power, due to the
opening angle of the antennas, their fields can overlap considerably. It is no longer possible
to clarify in which antenna field access to the data of a tag is performed.
In order to avoid this, always keep a minimum distance of 3 m between two readers with the
maximum radiated power of 500 mW ERP.
Dense Reader Mode (DRM)
The readers can also interfere with each other (secondary fields), if the channels (Reader
TX, Transponder TX) overlap. In order to prevent a transponder channel overlapping with a
reader channel, we recommend that the Dense Reader Mode (DRM) is used.
5.2.2.2

Antenna diagram for RF620R (ETSI)

The following radiation diagrams show the directional radiation pattern of the internal
antenna of the RF620R (ETSI) reader. For the spatial presentation of the directional
radiation pattern, the vertical plane in space (Azimuth section) as well as the horizontal plane
(elevation section) must be considered. This results in a spatial image of the directional
radiation pattern of the antenna with its main and auxiliary fields.
SIMATIC RF600
System Manual, 10/2009, J31069-D0171-U001-A8-7618
Readers
5.2 RF620R reader
105