Wireless Device EMC Certification

emi test Items

1. Conduction Disturbance Test - Key Parameters to Consider

• Measurement Receiver

• Measurement LISN

• Measurement ISN (For testing network ports and telephone ports)

• Test Product Operating Voltage: AC 0~265V Max

• Test Product Operating Current: Rated current 16A single-phase; three-phase equipment can also be tested

• Test Frequency: 9kHz–30MHz

• Remarks: All products connected to the mains power (including those indirectly connected to the mains power) must be tested. On-site testing provides rectification components and technical guidance.

2. Power Radiation Disturbance - Key Parameters to Consider

• Measurement Receiver

• Power Absorbing Clamp: 30–1000MHz

• Test Frequency: 30MHz–300MHz

• Test Products: Small household appliances and audio-visual products

• Remarks: On-site testing provides rectification components and technical guidance.

3. Magnetic Field Radiation Disturbance - Key Parameters to Consider

• Measurement Receiver

• Test Frequency: 9kHz–30MHz

• Test Products: Lighting fixtures, induction cookers

• Remarks: On-site testing provides rectification components and technical guidance.

4. Space Radiation Disturbance (966) - Key Parameters to Consider

• Measurement Receiver: 9k–7G

• Measurement Spectrum Analyzer: 9k–26.5G

• Measurement Antenna: Biconical log-periodic antenna, Horn antenna

• Loop antenna, Biconical antenna, Log-periodic antenna

• Test Frequency: 9kHz–18000MHz

• Remarks: Equipped with FM, AM, PAL, NTSC, DVB, DVB-2 digital TV signal generators (supporting global formats).

• Test Product Operating Voltage: Three-phase AC 380V max and Single-phase AC 90~260V

• Test Product Operating Current: Three-phase 30A max

• Test Product Operating Power Frequency: 50Hz/60Hz

• Test Products: IT products, medical, audio, lighting fixtures (30–300MHz), toys, wireless, network products, etc.

• Remarks: On-site testing provides rectification components and technical guidance.

5. Harmonic Current - Key Parameters to Consider (en61000-3-2)

(Tests the interference generated when the product's power supply operates on a 50Hz power grid; looks at multi-frequencies of the 50Hz grid, testing up to the 40th harmonic frequency)

• Test Voltage: AC 220–240V

• Test Conditions: Input power $\ge$ 75W (exempt from testing if less than 75W, except for lighting fixtures), current $\le$ 16A

• Product Classification:

• CLASS A: Includes balanced three-phase equipment, household appliances (equipment not belonging to Class D), tools (excluding portable tools), incandescent lamp dimmers, audio equipment, etc.

• CLASS B: Portable tools

• CLASS C: Lighting equipment (25W boundary; lighting products do not pass easily)

• CLASS D: The following equipment with power less than 600W: personal computers, monitors, televisions

• Remarks: On-site testing provides rectification components and technical guidance.

6. Voltage Fluctuations and Flicker - Key Parameters to Consider (EN61000-3-3)

(Tests the interference generated when the product's power supply operates on a 50Hz power grid; considers voltage interference)

• Test Products: Products with an input voltage of AC 220–240V.

• Test Parameters: $P_{st}$, $P_{lt}$, $d_c$, $d_{max}$

• Remarks: (High-power products containing automatic control high-power switches do not pass easily). On-site testing provides rectification components and technical guidance.

EMS Test Items

1. Electrostatic Discharge (ESD) Test (iec61000-4-2) - Key Parameters to Consider

(Mainly required by European countries)

• Electrostatic Generator Range: $\pm$0.2kV–$\pm$30kV (includes air discharge and contact discharge)

• Test Points: With the product in normal operation, electrostatic interference signals must be applied to any location that can be touched by human hands.

• Remarks: On-site testing provides rectification components and technical guidance.

2. Radiated Immunity Test (IEC61000-4-3) - Key Parameters to Consider

(Mainly required by European countries)

• Test Frequency Band: 80MHz–2500MHz

• Modulation: 80% amplitude modulation (AM) with a 1kHz or 2Hz sine wave

3. Electrical Fast Transient / Burst (EFT/B) Test (IEC61000-4-4) - Key Parameters to Consider

(Mainly required by European countries)

• Test Interference Voltage: 0.2kV–4.4kV

• Product Operating Voltage: AC 80~230V

• Product Operating Current: Maximum input current 16A max

• Interference Pulse Waveform: 5/50ns

• Burst: 15ms pulse train (5kHz or 100kHz), with a cycle period of 300ms

• Remarks: On-site testing provides rectification components and technical guidance. However, many product types fail easily due to the wide interference frequency and high voltage.

4. Lightning Surge Test (IEC61000-4-5) - Key Parameters to Consider

(Mainly required by European countries)

• Product Operating Voltage: AC 80~230V

• Product Operating Current: Maximum input current 16A max

• Maximum Test Voltage: 0.2kV–6kV

• Open-Circuit Voltage Waveform: 1.2/50$\mu$s

• Short-Circuit Current Waveform: 8/20$\mu$s, once per minute

• Remarks: On-site testing provides rectification components and technical guidance. Generally, products without protective components and outdoor products do not pass easily.

5. Conducted Immunity Test (IEC61000-4-6) - Key Parameters to Consider

(Mainly required by European countries)

• Product Operating Voltage: AC 80~230V

• Product Operating Current: Maximum input current 16A max

• Carrier Frequency: 0.15–230MHz

• Modulation Signal: AM 80%, 1kHz

• Modulation Voltage: 1V, 3V, 10V

• Remarks: On-site testing provides rectification components and technical guidance. Generally, products that operate using frequencies within the test band (including the modulation signal frequency) do not pass easily.

6. Power Frequency Magnetic Field Test (IEC61000-4-8) - Key Parameters to Consider

(Mainly required by European countries)

• Magnetic Field Strength at Coil Center: 100 A/m

7. Voltage Dips and Interruptions Test (IEC61000-4-11) - Key Parameters to Consider

(Mainly required by European countries)

• Test Voltage: Can only test products with an AC 220–240V input

• Remarks: Most general products can pass this test successfully.