BTF Testing Lab Electromagnetic Compatibility (EMC) introduction

short description:

Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate compliantly in its electromagnetic environment without causing intolerable electromagnetic interference to any equipment in its environment. Therefore, EMC includes two requirements: On the one hand, it means that the electromagnetic interference generated by the equipment to the environment in the normal operation process cannot exceed a certain limit; On the other hand, it means that the appliance has a certain degree of immunity to electromagnetic interference in the environment, that is, electromagnetic sensitivity.

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Product Detail

Product Tags

Main test items

Electromagnetic Interference Project	Electromagnetic Immunity Project
Conducted disturbance	electrostatic discharge
Radiated interference	electrical fast burst
Radiated magnetic field	surge
Harassment power	RF Conducted Immunity
Electromagnetic field strength	RF Radiated Immunity
Power harmonics	Power frequency magnetic field
Voltage fluctuations and flicker	Voltage dips and interruptions

Measurement item	Standard	Main performance
Radiated emissions	VCCIJ55032FCC Part-15 CISPR 32 CISPR 14.1 CISPR 11 EN300 386 EN301 489-1 EN55103-1 ……	Magnetic wave: 9kHz-30MHzElectric wave: 30MHz-40GHz3m method automatic measurement
Power port conducted emissions		AMN: 100A9kHz-30MHz
Disturbance power	CISPR 14.1	30-300MHzClamp positioner L=6m
Radiated electromagnetic disturbances	CISPR 15	9kHz - 30MHzφ2m Large loop antenna
Harmonic current / Voltage fluctuation	IEC61000-3-2IEC61000-3-3	1φ<16A
ESD	IEC61000-4-2	+'/- 30kVAir/ Contact DischargeHorizontal / Vertical Coupling Plane
EFT / burst	IEC61000-4-4	+'/- 6kV1φ/3φ AC380V/50AClamp
Surge	IEC61000-4-5	+'/- 7.5kVCombination1φ, 50ADC/100A
Conducted Immunity	IEC61000-4-6	0.15-230MHz30VAM/PM M1, M2-M5/50A, Telecom T2/T4, Shield USB
Power frequency magnetic field	IEC61000-4-8	100A/m50/60Hz1.2 × 1.2 × 1.2m Helmholtz Coil 2.0 × 2.5m Oneturn Coil

Introduction to Bluetooth Technology

The EMC standard system framework of most international organizations adopts the standard classification system of the International Electrotechnical Commission (IEC), which is divided into three categories: basic standards, general standards, and product standards. Among them, product standards are further divided into series product standards and special product standards. Each type of standard includes both interference and anti-interference standards. EMC standards are adopted in accordance with the order of "special product standards → product standards → general standards".

Common Product Category Standards	domestic standard	international standard
Lighting	GB17743	CISPR15
	GB17625.1&2	IEC61000-3-2&3
Home appliances	GB4343	CISPR14-1&2
	GB17625.1&2	IEC61000-3-2&3
AV audio and video	GB13837	CISPR13&20
	GB17625.1	IEC61000-3-2
IT information	GB9254	CISPR22
	GB17625.1&2	IEC61000-3-2&3
multimedia	GB/T 9254.1-2021	CISPR32
	GB17625.1&2	IEC61000-3-2&3