Front cover The publishers would like to thank TMD Technologies, for the use of their images on the front cover of EMC Testing.
The source guide for engineers, scientists and technicians 2-3 Cyber-Rating for New
Vehicles Vehicle Resilience testing combines functional Safety, EMC and Cybersecurity to help develop rating scheme for future new car buyers.
5 EMC in Electronic Design Continued miniaturisation and harsher application environments are driving further developments in board level and cable protection against RFI.
6 Counterfeit Batteries
Pose RFI Risk Growth in the use of portable devices in defence highlights the risk of using counterfeit batteries.
9 Tricks of the Shielding Trade
Holland Shielding provides a basic overview of RFI shielding and the important points on using Faraday cages to reduce interference.
10 Safe Choices for
Automation Factors to consider when selecting a drive controller for critical automation systems, including EMC compliance.
13 Gaskets fill the gap in Defence
14 Technology events Important dates for you diary.
16 Pump up the Flow for
3D Printing 3D printing of electroconductive inks provides an ideal route for PCB design but is fraught with challenges.
19 Snap-in Cable Glands A new series of cable mounting glands for cabinets provides harsh environment, UV, ozone and EMC protection for industrial equipment.
20 Real time scanning boosts
certification speed EMI receiver improves EMC certification performance for test houses with the introduction of time domain and real time scanning capabilities.
23 Company Guide A five-page guide to Test Houses and equipment suppliers.
28 A Dipole Moment Researchers suggest ways of reducing the EMC burden without shielding by considering dipole moments.
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Shielding An overview of the use of extruded and die-cut sheet elastomers for filling the RFI shielding gap in the defence industry.
More options in changing RFI Environment
As more devices fall within the scope of the Radio Equipment Directive, companies are faced with a choice between in-house and contracted pre-compliance testing.
The RFI environment is changing and suppliers are having to consider such concepts as interoperability both between different products and within the device as well. Whereas antennas may have once been absent in a typical product, now there may be not just one but many antennas in the same device for Wi-Fi, Bluetooth etc. The correct operation of these, their interoperability and their susceptibility to interference are important topics that are new to many companies in the increasingly connected markets they work in.
TESTING EMPHASIS I spoke to Paul Duxbury at Rainford EMC, part of MVG, about the effect of such changes on chamber suppliers. According to him, these changes are placing more emphasis on the need for testing, not only for compliance but also for pre-compliance development testing. With an established base of test houses available for EMC
testing, there is plenty of scope for sharing the development work with professionals that have deep knowledge of the intricacies of electromagnetic interference. However, there is the question of capacity in such companies versus the rapid increase in testing demand. “There are a number of companies now that are considering or
installing in-house test facilities for pre-compliance testing and product development,” says Duxbury. The choice is a difficult one balancing the cost of in-house facilities
against the cost of outsourcing, testing lead times and skills. Duxbury emphasises the need for valid testing and the correct use of chamber equipment to make sure that pre-compliance testing results using in-house facilities are meaningful.
With chamber suppliers like Rainford EMC and the expanding capacity of EMC test houses in the UK, the options for device manufacturers are open to enable even small suppliers of wearable electronics and other IoT enabled devices to choose between the use of entry level in-house development facilities or the services of testing providers.
Jonathan Newell, Editor
Concorde Publishing Ltd 100 Borough High Street, London SE1 1LB, UK Tel: +44 (0)20 7863 3079 Email: EMCtesting@concordepublishing.co
m Web: www.environmentalengineering.org.uk
ith more devices becoming connected as the internet of things expands, more companies are having to face the issue of regulatory compliance with the Radio Equipment Directive (RED) and the need for EMC testing.
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