RF emissions generated by a device and conducted along the DC supply lines are measured using 5 uH Line Impedance Stabilisation Networks (LISN’s), to simulate the impedance of a vehicle electrical system.

Capabilities

Compliance Engineering has facilities to cater for EMC measurements of vehicle components in accordance with a wide range of international and manufacturer specific standards. We also cater for EMC testing of After-Market automotive products.

Examples of vehicle component EMC standards we can provide compliance testing to:

  • General Motors GMW3097
  • Ford ES-XW7T-1A278-AC
  • Toyota TSC series
  • Mitsubishi ES-X82010
  • Renault 36-00-80X
  • Rover RES 62.21.62X
  • Fiat, Chrysler, Volkswagen, Porsche, Peugeot, Subaru, Proton, Volkswagen, Kenworth, Iveco, FUSO, Haitec and many others
  • SAE J1113 Series
  • 95/54/EC, 2004/104/EC & 2006/28/EC
  • JASO D 001494
  • ISO 1145242/3/4/5/6 & ISO 763741/2/3 & ISO 10605
  • CISPR 12, CISPR 13 & CISPR 25
  • FCAI (sub components) – Voluntary Code Of Practice
  • Vehicle Immobilisers AS/NZS 4601
  • Vehicle Alarm Systems AS/NZS 3749.1

Voltage transients produced when inductive loads are switched from on to off and off to on, are measured using a Digital Storage Oscilloscope connected directly to the supply lines.

Radio Frequency Emissions

Conducted and radiated RF emissions emanating from vehicle components are generally measured using procedures based on CISPR 25. Measurement procedures can also be tailored to conform to a variety of manufacturer’s custom requirements.

Transient Emissions & Immunity

Radio Frequency Immunity

The ability of a device to operate without interference in the presence of a high RF field can be assessed using various methods, depending on the reference standard and frequency range. Some common methods of coupling the RF energy to the device are:

  • TEM Cell: ISO 11452-3
  • Stripline: ISO 11452-5
  • Bulk Current Injection: ISO 11452-4
  • Direct Injection: ISO 11452-7
  • Free Field: ISO 11452-2

Electrostatic discharges are being applied to an electric seat in areas that are accessible to a vehicle occupant (electronic controls). Discharge using ISO 10605 discharge networks (150 pF / 330 ohm and 150 pF / 2k ohm) can be generated up to a level of ± 30kV. Other discharge networks can be utilised depending on the particular requirement.

RF Remote Key Measurements

RF remote transmitters and receivers must comply with the radio communication standards applicable to the destination market. In Australia the applicable standard is AS/NZS 4268, whilst in Europe the applicable standards are ETSI EN 300 220-1 (emissions) and ETSI EN 301 489-1(immunity). FCC requirements must be met for the U.S market.

Electrostatic Discharge

Electrostatic discharges are common events in vehicles as occupants enter and exit after it has been traveling. These ESD events can easily reach levels of ±25kV and may cause momentary loss of operation or permanent damage to sensitive electronic circuitry.

The Compliance Engineering difference

With more than 25 years combined EMC experience, Compliance Engineering staff are able to assist in identifying relevant requirements; and with a vast array of test and measurement equipment on hand, we can assist in achieving compliance goals efficiently, enabling new products to be brought to market without costly delays.

Compliance Engineering is conveniently located in the Melbourne metropolitan suburb of Knoxfield, near both the Monash Freeway and Eastern Freeway extension.

  • Modern compliance testing facilities
  • Experienced and competent staff
  • Efficient turn around times
  • Competitive pricing
  • Test data available immediately on completion of measurements
  • No lengthy scheduling periods with majority of projects scheduled within days
  • Emission measurements performed indoors and ambient free

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