Computer goods

In 2012, Inmetro instituted a specific conformity assessment program for IT goods, aiming at reducing accidents, increasing quality and decreasing the energy consumption of products.

Precisely for these reasons, the tests required by this ordinance are aimed at electromagnetic compatibility, safety and energy efficiency.

Such regulation (Inmetro Ordinance 170/2012) can be consulted here.

The laboratory is accredited by Cgcre according to the methods and procedures described in the ordinance above, which are:

• Ordinance MDIC Inmetro 170/2012 (Annex E: Energy Efficiency) & EMC scope and safety
• CISPR 22 (electromagnetic emissions)
• CISPR 24 (immunity to electromagnetic disturbances) and the basic standards:
• IEC 61000-4-2, Electro-Static Discharge
• IEC 61000-4-3 (radiated immunity to radio frequency electromagnetic fields),
• IEC 61000-4-4 (immunity to fast electrical transients – burst),
• IEC 61000-4-5 (outbreak immunity)
• IEC 61000-4-6 (immunity to conducted disturbances, induced by radio frequency fields),
• IEC 61000-4-8 (immunity to magnetic fields)
• IEC 61000-4-11 (immunity to voltage reduction, variation and interruption)
• IEC 61000-3-2 (harmonic current emission)
• IEC 61000-3-3 (emission, voltage fluctuation and flicker)
• IEC 60950-1 (safety)

In practice, this conformity assessment program for IT Goods has been referenced in public tenders, which in some cases require acoustic tests to analyze the noise emission of this IT equipment.

In this case, the laboratory has accredited scope using as references the most well-known international references in the area, namely: 

ISO 7779: Measurement of airborne noise emitted by information technology and telecommunications equipment 

ECMA-74: Measurement of airborne noise emitted by information technology and telecommunications equipment 

ISO 3744: Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure – Engineering methods for an essentially free field over a reflecting plane