EN 55020 (equivalent to CISPR 20) : Immunity from radio interference of broadcast receivers and associated equipment.

The scope of this covers broadcast sound and television receivers and associated equipment intended to be connected directly or reproduce audio or visual information, for example audio equipment, video cassette recorders, compact disc players and electronic organs.

No immunity requirements apply to battery powered sound and TV receivers or those without an external antenna connection.

Test required by the standard are :

• Immunity from unwanted signals present at the antenna terminal.
• Immunity from conducted voltage at the mains input, audio input and output terminals of receivers over the range 150kHz and 150MHz.
• Immunity from conducted current applied to the antenna terminal.
• Immunity from radiated fields 150kHz to 150MHz.