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4. Our Solutions -> 3.7 Features - EMC 4. Our Solutions -> 3.7 Features - EMC

Electromagnetic compatibility (EMC)



Electromagnetic compatibility (EMC)

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An essential requirement of industrial touchpanels is the EMC compliance. Other electrical equipment in the near vicinity should not disturb the operation of your product and it should also not disturb other equipment.



Sources of interference in accordance with IEC standard:

To obtain an EMC stable input system two main sources of interference have to be considered. The first source of interference are the displays which have to be integrated behind the touch panel and the power supplies being clocked. The EMC standard IEC 61000-4-3 refers to these interference sources.

Furthermore, the EMC standard IEC 61000-4-6 defines Conducted Coupling of interfering voltage peaks and frequencies. To eliminate these interference signals that the HMI system operates with positional accuracy without deviation of the touch function and is not causing false alarms, this is a prerequisite for achieving EMC compliance to Class A.


Technical solution:


With optimized AD converters in the evaluation electronics of the PCAP controller, increased signal voltages through charge pumps, special algorithms such as the frequency-hopping method as well as hardware and software filters, interference sources are suppressed comprehensively. With a sensor design specially adapted to the electronics, additionally, an optimum signal-to-noise difference is achieved.


In the video you will find a test for the EMC certification.

EMC testing:

Your product should comply with the European EMC standards and regulations. Prior to the final EMC test at an accredited test lab, it is recommended to investigate the EMC behaviour at the early design phase by performing pre-compliance tests. This can be done by yourself or with the assistance of SCHURTER Input Systems.



The following EMC standards have been met successfully:


IEC 60601-1-2: Edition 4.0

IEC 61000-4-3: Level III, 10 V / m, up to 28V / m @ 385 ~ 6000MHz

IEC 61000-4-4: Test Electrical Fast Transient / Burst Immunity. Level III, Vpp ± 2 KV

IEC 61000-4-6: Conducted Radio Frequency Immunity, Level III, 10V / m



Your SCHURTER EMC competence center:

SCHURTER has its own competence center with testing equipment for tests on conductive immunity. While testing during an early stage

of the development phase, possible EMC issues can be recovered. That gives more confidence in succeeding at the final (expensive) EMC tests first time and is of course cost-effective.

If you would like more information about what SCHURTER can do for you regarding to EMC, contact us

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