Elec­tro­mag­netic com­pat­i­bil­ity test­ing in EMC lab EN 55022, CISPR 22

EN 55022:2010 Infor­ma­tion tech­nol­ogy equip­ment– Radio dis­tur­bance char­ac­ter­is­tics– Lim­its and meth­ods of mea­sure­ment

Scope
Inter­na­tional stan­dard EN 55022:2010 is applic­a­ble to infor­ma­tion tech­nol­ogy equip­ment (ITE). Stan­dard EN 55022:2010 defines infor­ma­tion tech­nol­ogy equip­ment as any equip­ment or device that oper­ates with a rated sup­ply volt­age not exceed­ing 600V, has a main func­tion of entry, stor­age, dis­play, retrieval, trans­mis­sion, pro­cess­ing, switch­ing, or con­trol of data and equip­ment that could be used in com­bi­na­tion with one or more ter­mi­nal ports with the main func­tion– infor­ma­tion trans­fer. Equip­ment or device, with a main func­tion of radio trans­mis­sion or recep­tion are not cov­ered by stan­dard EN 55022:2010.

Clas­si­fi­ca­tion
Inter­na­tional stan­dard EN 55022:2010 divides equip­ment, devices and appa­ra­tus it two classes:
Class B- equip­ment, device and appa­ra­tus, that are intended to be used in the domes­tic envi­ron­ment and meets EN 55022:2010 class B emis­sion require­ments;
Class A- equip­ment, device and appa­ra­tus, that do not meet the EN 55022:2010 class B emis­sion require­ments, but com­plies with EN 55022:2010 class A emis­sion require­ments;

If class A require­ments are applied, then fol­low­ing warn­ing shall be included in the instruc­tions for use:

Warn­ing

Exam­ples
PC, telecom­mu­ni­ca­tion equip­ment, office machines, data pro­cess­ing equip­ment, ITE acces­sories, portable bat­tery sup­plied devices.

Require­ments
Con­ducted emis­sion require­ments for mains ports and telecom­mu­ni­ca­tion ports must be sat­is­fied in fre­quency range 150kHz-​30MHz.

Radi­ated emis­sion require­ments must be sat­is­fied in fre­quency rage:
30MHz-​1GHz if inter­nal oscil­la­tor fre­quency is up to 108MHz
30MHz-​2GHz if inter­nal oscil­la­tor fre­quency is up to 500MHz
30MHz-​5GHz if inter­nal oscil­la­tor fre­quency is up to 1GHz
30MHz-​6GHz if inter­nal oscil­la­tor fre­quency is higher than 1GHz



Stan­dard EN 55022 :2010 limit line for conducted emis­sions on mains ports, Class B equip­ment


Stan­dard EN 55022 :2010 limit line for conducted emis­sions on mains ports, Class A equip­ment


Stan­dard EN 55022 :2010 limit line for conducted emis­sions on sig­nal ports, Class B equip­ment


Stan­dard EN 55022 :2010 limit line for conducted emis­sions on sig­nal ports, Class A equip­ment


Stan­dard EN 55022 :2010 limit line for radi­ated emis­sions Class B equip­ment


Stan­dard EN 55022 :2010 limit line for radi­ated emis­sions, Class A equip­ment


Stan­dard EN 55022 :2010 limit line for radi­ated emis­sions Class B equip­ment


Stan­dard EN 55022 :2010 limit line for radi­ated emis­sions Class A equip­ment