Device Description HG G-71910-C | English, Revision 03 | Date: 17.09.2019
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Chapter 2 – Introduction
2.2 Function
As the antenna passes over the transponder, it energizes the latter with an energy
field of 128 kHz. So the transponder transmits his code at half of this frequency. The
transponder position in relation to the antenna surface is measured by a coil with ori
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entation in direction of travel.
The interpreter which is integrated within the antenna decodes the transponder
code. Each crossing of the coordinate axis in driving direction generates a position
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ing pulse with an adjustable duration.
The serial output signal is a non isolated RS 232. Alternatively it is possible to use a
CAN Bus. The positioning pulse is not galvanically separated but available as a +24 V
(20 mA) operational voltage switched output. Optional a 15 bit parallel output for the
code (24 Volt switched, non current limiting) can be effected.
Additionally transponders can be programmed. In order to do so the transponder has
to stay in the antenna field for a minimum of 30 ms after the programming has been
started.