Safety Instructions

SYMEO LPR
®
LPR-1D
Product Documentation
Commissioning
Copyright © Symeo GmbH 2010
Page 34 of 87
Figure 18 Calculation and figure of Fresnel zone
4.2.4 Installation of Planar Antennas
Each antenna type has its own opening angle. To communicate with the
opposite antenna the relative antennas has to be located in the opening
angles of the opposite antennas.
Antennas have to be mounted without any offset (no difference in height and no offset
sideways). Make sure that the opening angle is symmetric to the relative direction of motion
(compare picture 1 vs. picture 2 in Figure 19).
If an offset is not inevitable the antennas have to be tilted (compare picture 3 vs. picture 4 in
Figure 19).
Notice: If the distance goes below a fixed distance it is possible that no
measurements take place any longer.
Crane Rail
Crane Rail Crane Rail
Figure 1
No Offset of Antennas
Figure 3
Unavoidable Offset of Antennas
Figure 2
No Offset of Antennas
Crane Rail
Figure 4
Unavoidable Offset of Antennas
Figure 19 Antenna Position with and without Offset
5 Commissioning
5.1 Requirements
In order for a station to be successfully commissioned, the LPR
®
components must have
been installed correctly:
 The station has been installed.
 The station has been connected to the power supply.
 Antenna(s) and antenna cables for the station have been installed.