What is AS/NZS CISPR 32 Compliance Certification?

With the widespread application of electronic devices in daily life and industrial production, Electromagnetic Compatibility (EMC) has attracted increasing attention. As the core specification for EMC of mULtimedia equipment in Australia and New Zealand, the AS/NZS CISPR 32 standard provides clear technical requirements and testing methods for emc testing of electronic devices.

What is the AS/NZS CISPR 32 Standard?

Based on the international CISPR 32 standard, AS/NZS CISPR 32 mainly applies to electromagnetic emission and immunity testing of information technology equipment, audio-visual equipment, and their combined products. The standard not only specifies limit requirements for radiated emissions and conducted emissions but also clarifies key details such as test environments, equipment configurations, and measurement methods.

radiated emission testing

The standard requires that the electromagnetic radiation of equipment within the frequency range of 30MHz to 6GHz shall not exceed the specified limits. Testing is usually conducted in an anechoic chamber using compliant measurement antennas and receivers. Notably, the standard sets differentiated limits for different types of equipment (e.g., Class A industrial equipment and Class B household equipment), with stricter requirements for Class B equipment to minimize its impact on the household environment.

Conducted Emission Testing

Conducted emission testing focuses on interference signals transmitted by equipment through power lines or signal lines. The standard mandates that conducted interference of equipment must be below specific thresholds within the frequency range of 150kHz to 30MHz. During testing, a Line Impedance Stabilization Network (LISN) is used to isolate the device under test (DUT) from the power grid, ensuring the accuracy of measurement results.

Immunity Requirements

In addition to emission testing, AS/NZS CISPR 32 also specifies immunity requirements for equipment, including test items such as Electrostatic Discharge (ESD), Radio-Frequency Electromagnetic Field Immunity, and Electrical Fast Transient/Burst (EFT). For example, in ESD Testing, equipment must withstand electrostatic shocks of at least ±4kV (contact discharge) and ±8kV (air discharge) without functional abnormalities.

Key Testing Considerations

In practical testing, engineers must pay special attention to the equipment layout requirements in the standard. The DUT should be configuRED with all peripheral devices in a typical operating state and tested under all possible working modes. For instance, a laptop needs to complete a full set of tests while connected to an external monitor, USB devices, and in a charging state.

Importance of Compliance for Enterprises

Conducting pre-testing in accordance with AS/NZS CISPR 32 in advance can significantly reduce product launch risks for enterprises. It is recommended to consider EMC issues during the product design phase, such as adopting good grounding design, installing EMI filters, and optimizing PCB layout. A well-known audio brand once suffered a product recall in the Australian market due to neglecting conducted emission testing, resulting in direct econoMIC losses exceeding 2 million Australian dollars—this case fully illustrates the importance of compliance testing.

Standard Updates

With the development of 5G and IoT technologies, the AS/NZS CISPR 32 standard is continuously updated. The 2023 revised version added testing requirements for Wi-Fi 6E devices in the 6GHz band, reflecting the standard's ability to keep pace with the times. Enterprises should closely monitor standard dynamics and seek support from professional EMC laboratories when necessary.

Test Requirements

①　Radiated Emissions (30MHz～1GHz)

②　Radiated Emissions (1GHz～6GHz)

③　Conducted Emissions (Power Port)

④　Conducted Emissions (Telecommunication Port)

Sample Size / Submission Specifications: on request

Lead Time / TAT (Turn Around Time): Regular service - 7-9 working days

JJR Laboratory provides compliance testing services. Welcome to inquire!