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IUH-F190-V1-*, IUT-F190-R4-V1*
Installation
4.3.2
Minimum Distances
When positioning the read/write head, please observe the minimum distances. The lateral
distance between the read/write head and metals or liquids should be at least 50 cm. The
distance between the read/write head and the ground should be at least 50 cm.
Figure 4.2
During simultaneous operation of several read/write heads, only one read/write head may ever
communicate with a tag at any given time. When arranging the read/write heads, make sure
that the measurement ranges do not overlap. You can enlarge or reduce the size of the
measurement range by changing the transmitting power. Determine the measurement range of
each read/write head at the mounting location.
Note!
During mounting, take into account how the read/write heads may cause interference with each
other. The further the transmission channels of the read/write heads are from each other, the
lower the risk of interference.
If you want to transmit with just one read/write head at any given time, use the multiplex mode
of the IDENTControl control interface. Multiplex operating mode allows chronologically
exclusive access to tags, and prevents mutual interference from read/write heads. For a precise
description, see the manual for your control interface.
4.3.3
Polarization
The polarization of the electromagnetic wave emitted by an antenna depends on the type of
antenna and is defined for the electromagnetic field component of the electromagnetic wave.
Polarization can be either linear or circular. In the case of an electromagnetic wave with linear
polarization, the direction of the vector of the electromagnetic field component is spatially
constant and therefore dependent on the position of the antenna. Linear polarization can be
either vertical or horizontal.
To achieve the maximum detection range for a UHF system, the polarization of the read/write
head must match the polarization of the tag so that both have the same spatial orientation.
Refer to the relevant data sheet to find the polarization of the tag.
30
metal support
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