Information technology equipment — Radio disturbance characteristics — Limits and methods of measurement (legacy)

What this standard covers and how we test it

EN 55022 was the emission standard for information technology equipment and was withdrawn in 2017, replaced by EN 55032. It still matters in practice because older reports and certificates quote it, while market surveillance asks for the current standard on new shipments - the limits of the two standards are close, but the product classification and the port definitions are not the same.

What the standard contained:

• Conducted emissions at the mains, with the Class A and Class B limits from 150 kHz
• Radiated emissions from 30 MHz to 1 GHz at 10 m, with the 3 m alternative
• Telecommunication port measurements, which EN 55032 redefined
• Class A warning text, and the transition dates after withdrawal

We re-issue the report against EN 55032 while keeping the original EN 55022 data alongside it, so a customer holding an old certificate can compare values without paying for a full re-test.

EN 55022 is normally booked together with the other EMC tests on the same sample set, so one shipment covers the whole file and the report dates stay aligned.