Mounting
English, Revision 09, Date: 13.12.2016
8
2
Mounting
2.1
Transponder
Observe the required minimum distances from metal, as the influence on positioning
accuracy and range is dependent upon size and distance of metal parts. For the same
reason, the transponder should be mounted as vertically aligned as possible. Please
observe the data sheets and mounting instructions for the suitable transponders
HG 71325XA and HW DEV000950/HW DEV0098.
2.2
Antenna HG 98820ZA
Figure 5
Antenna Mounting Holes
To prevent any adverse effects on the system:
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The Antenna itself may be mounted directly onto metal with its underside.
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No closed loop within 300 mm around the antenna, especially around the cover.
No metal surfaces nearer than 50 mm (essential antenna connection cabling and
special mounting struts excluded).
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For perfect operation of the transponder system, it is essential that there are no
interfering signals in the frequency range of 64 ±4 kHz (e. g. chopped engines,
etc.)!
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Current-carrying wires have to be far enough away from the antenna (minimum
150 mm) so that their power and frequencies does not influence the antenna too
much, its sum voltage in idle mode has to be below 50 and during driving below
100 (guideline: For very high or very small reading distances those values may be
higher/lower. The sum voltage without a transponder in the reading area should
always be smaller than half the sum voltage that is generated by a transponder
within the reading area). The only exception to this rule is the connection cable of
the antenna itself.
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Transponder antennas with the same energy field frequency may not be posi-
tioned too close to each other since then beat frequencies can change the energy
supply to the transponders. This can e.g. be observed when the energy con-
