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TÜV Product Service Ltd
EMC for all reasons
• Overview of EMC
• EMC Test Facilities
• Different tests for different markets
• Routes to Compliance
• How do you save money?
• Price Drivers
• Benefits of using TÜV Product Service
Contents
TÜV Product Service Ltd
The problems of EMC
• interference with Broadcast Receiver reception
• interference from radio transmitters
• interference from transients
TÜV Product Service Ltd
Test Overview
Conducted
LF/ RF immunity
Surges /
PSU
Conditioning
Transients/ Lightning
Conducted
AF/RF emissions
Surges
Transients
Conducted
LF/RF immunity
Voltage dips
& interrupts
Mains harmonics
& flicker
Radiated
HF/RF
immunity
Radiated
HF/RF
emissions
I/O Power
EUT
ESD
NB other tests may apply, e.g. magnetic field emissions or
immunity, depending on the equipment or application
TÜV Product Service Ltd 2006-05-10 7
EMC Testing
Test Documentation Construction & Review
Validation of customers requirements.
Readiness for Test Reviews covering
Logistics of Test
Application of Test
Rationalisation of Test Programmes
Testing & Assistance with EMC issues
Reporting (10 day turnaround)
Certification (Bearley Activities Only)
TEMPEST Testing (TEMPEST Logo)
Test Documentation Construction & Review
Establishing customers requirements and rationalisation of the work program
Testing
Reporting (10 day turnaround)
In-Situ Testing for the above
Surveys, utilising clients capacity, trials, large equipments which cannot be brought into a Test House Environment.
Consultancy to aid clients with solutions to their EMC issues.
Scope
TÜV Product Service Ltd 2006-05-10 8
EMC Test Capability - Continued
Conducted Emissions testing: 20Hz – 400MHz
Radiated Emissions Testing: 14kHz – 40GHz
Conducted Susceptibility: 20Hz – 400MHz (AF & BCI)
Magnetic Susceptibility: 20Hz – 150kHz
Radiated Susceptibility: 10kHz – 40GHz (with 18- 40GHz amps
hired from Astrium). Levels up to 200V/m CW and 600V/m
minimum pulsed.
Power Supply Conditioning: New equipment to meet the
Airbus requirements up to 800Hz with DO160E software being
developed as an add on.
Transient & Lightning: Elgal for Defence requirements, EMC
Partner system for all indirect Civil Aerospace.
TÜV Product Service Ltd 2006-05-10 9
Octagon House:
4 x Screened Enclosures
1 x Lightning Lab & 1 x Prep Area
Bearley:
1 OATS
1 Screened Enclosure
Various small chambers & Labs
Facilities
TÜV Product Service Ltd
Why EMC is important?
• to meet legal requirements
(e.g. EMC Directive)
• to meet voluntary schemes
• to meet a contractual
obligation (e.g. DEF STAN
etc.)
TÜV Product Service Ltd 2006-05-10 11
Aerospace
Civil Aerospace - Airbus, Boeing (RTCA DO-160)
JSF, Eurofighter for Military (Mil Std, EFA)
Defence
Air (as above)
Land (Vehicles, Man Portable Equipments, Security systems, etc)
Ships (From submarines, in-situ, to systems at the test facility)
Industrial
Rail, Automotive (Car products, Motorcycles, Products for Rail as well as whole vehicles trackside)
Commercial (Showers, Broadcast Receivers (audio/visual), Basestations etc)
Markets AddressedMarkets Addressed
TÜV Product Service Ltd
Different tests for different markets
Military, aerospace and
automotive:
• RF field swept or stepped
– from 14kHz to 40GHz
– modulation EUT-dependent
– field set by local monitoring, no
uniformity specification
• specific test setup on
ground plane
• levels from 1V/m to
56000V/m (TÜV limited)
Commercial:
• RF field swept or stepped– from 80MHz to 2.7GHz (possibly up to
6GHz)
– amplitude modulated 80%, 1kHz
– field set by substitution method
– field uniformity at EUT, +6 -0dB
• each face of EUT subjected to
vertical and horizontal
polarizations
• levels from 1V/m to 10V/m and
above
TÜV Product Service Ltd 13
Different tests for different markets
Military -
• There are two main set ups in a screened enclosure for military & aerospace equipment
depending on how it will be installed in its intended environment.
– On a ground plane.
– On a mannequin or non conductive ground plane.
• UK standards converging with NATO and US.
• Increasing immunity levels due to higher power pulsed transmitters.
• Increasing lightning levels due to more composites in aircraft.
TÜV Product Service Ltd 14
Different tests for different markets
Civil -
• We are seeing a growing trend for CE marking to be applied to military equipment
broadening the scope of equipment we need to address.
• Test levels are increasing specially in safety critical environments i.e. Rail.
• The standards are changing at almost a daily basis with general emissions standards
converging to American standards.
• For many large items limited to testing on-site.
TÜV Product Service Ltd
Routes to Compliance
•Accreditation covering testing in our permanent laboratory and also SMT scheme.
•Manufacturer’s test reports can be used to obtain EMC Attestations for CE marking, CB Certificates via the CB Scheme.
•Initial audit of the test laboratory in accordance with ISO 17025.
•Support and training.
•Issue of required attestations and / or CB Certificates.
•A combination of spot check testing and annual laboratory assessments ensure the continued smooth operation of the SMT partnership.
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TÜV Product Service Ltd
How do you save money?
• Design Review, Risk Assessments and GAP Analysis (reduce the amount of
tests).
• Prepare a structured Test Plan.
• Be Test House savvy.
– Cable lengths & terminations
– Power supplies
– Functional test equipment
– On site support
• Pre-compliance – gain confidence before full qualification testing or going into
production.
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TÜV Product Service Ltd
Price Drivers
What will drive the price of your EMC test regime?
• Market access – Where do you want to sell it?
• Specification requirements – How and where will it be used?
• Number of modes of operation?
• Dwell time of EUT – Is it continuous operation?
• Number of ports or power / control & signal cables?
• Size of product (Can it be done in house or at the clients site?)
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TÜV Product Service Ltd
Benefits of using TÜV Product Service
• The right people
– With over 50 years’ experience TÜV Product Service has a
core team of global experts well versed in their fields of
testing and certification of products to worldwide standards.
• The right time
– With over 11 chambers and other facilities, flexibility to
meet your lead-times regardless of length of project
– Flexible working covering shifts and weekends
• The right solution
– Complementary services such as One-stop testing and
consultancy or certification
– Flexible Schedules (always the first to achieve
accreditation to address new standards)
– At our site or we will come to you
– Industry leading report turnaround – 48 hours on demand
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