EMI/EMC Testing Services

Alpha Test House has installed latest technology based resources for its test facilities and developed credibility in providing thetesting and engineering resources to streamline customer’s EMC compliance testing process as per the assisting and upcoming market demands.
Electro-magnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a interference generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. The interference may subdue/mitigate the performance of the circuit or even discontinue it from functioning. Both human-created and natural sources generate varying electrical currents and voltages that can cause Electro-Magnetic Interference in ignition systems, cellularnetwork of mobile phones, lightning, and auroras (northern/southern lights). EMI frequently affects AM radios. It can also affect small consumer electronics products s like mobile phones, radios, and televisions, as well as as well as several electronics products.

Electromagnetic compatibility (EMC) is the ability of electrical equipment and systems to function satisfactorily in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electro-magnetic interference (EMI) or even physical damage to operational equipment. The objective of EMC is the appropriate operation of different equipment in a common electro-magnetic environment.
EMC addresses three main classes of issue. Emission is the generation of electromagnetic energy, whether deliberate or accidental, by some source and its release into the environment. EMC studies the unwanted emissions and the countermeasures which may be taken in order to reduce unwanted emissions. The Susceptibility, is the tendency of electrical equipment, referred to as the victim, to malfunction or break down in the presence of unwanted emissions, which are known as Radio frequency interference (RFI). Immunity is the opposite of susceptibility, being the ability of equipment to function correctly in the presence of RFI, with the discipline of "hardening" equipment being known equally as susceptibility or immunity. A third class studied is coupling, which is the mechanism by which emitted interference reaches the victim.
Interference reduction and hence electromagnetic compatibility may be achieved by addressing any or all of these issues, i.e., quieting the sources of interference, inhibiting coupling paths and/or hardening the potential victims. In practice, many of the engineering techniques used, such as grounding and shielding, apply to all three issues

We offers our testing services for EMI/EMC As per CISPR & IEC/EN, Safety , RF and Interface testing as per requirement of TEC as well as specified requirements & emerging regulations being notified time to time.
We also offer pre-compliance testing services to verify critical components of EMC compliance including radiated/conducted immunity and susceptibility to help ensure your project will meet all compliance requirements during the final evaluation. Our pre-compliance testing suite helps you identify product deficiencies and make design adjustments to avoid costly delays to market.

TEST Service for Below Standards :
S.NO	Scope	EN Standard	IEC Standards
1	Burst/Electrical Fast Transient	EN 61000-4-4	IEC 61000-4-4
2	Conducted Disturbances Induced by RF Fields	EN 61000-4-6	IEC 61000-4-6
3	Electrostatic Discharge	EN 61000-4-2	IEC 61000-4-2
4	Magnetic Field, Power Frequency	EN 61000-4-8	IEC 61000-4-8
5	Magnetic Field, Pulse	EN 61000-4-9	IEC 61000-4-9
6	Radiated RF Electromagnetic Field	EN 61000-4-3	IEC 61000-4-3
7	Surge	EN 61000-4-5	EN 61000-4-5
8	Voltage Dips, Short Interruptions and Voltage Variations	EN 61000-4-11	IEC 61000-4-11
9	Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests	EN- 61000-4-29	IEC - 61000-4-29

TESTING SERVICE AS PER CISPR Standards
S.NO	Standard:	Description
1	CISPR 11	Industrial, scientific and medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics – Limits and methods of measurement
2	CISPR 12	Vehicles, boats and internal combustion engine driven devices – Radio disturbance characteristics – Limits and methods of measurement for the protection of receivers except those installed in the vehicle/boat/device itself or in adjacent vehicles/boats/devices
3	CISPR 15	Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipments
4	CISPR 22	Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement
5	CISPR 24	Information technology equipment – Immunity characteristics – Limits and methods of measurement
6	CISPR 25	Vehicles, boats and internal combustion engines – Radio disturbance characteristics – Limits and methods of measurement for the protection of on- board receivers
7	CISPR 32	Electromagnetic compatibility of multimedia equipment – Emission requirements