WORLD TRADE  
ORGANIZATION   
G/IT/SPEC/Q4/4/Rev.1 
13 July 2012 
 (12-3787) 
Committee of Participants on the Expansion of Trade in 
Information Technology Products Original:   English 
 
 
 
SURVEY ON EMC/EMI 
 
Revised Replies to the Survey 
 
Communication from Switzerland 
 
Revision 
 
 
 The following communication, dated 30 May 2012, has been received from the Permanent 
Mission of Switzerland.  
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1. (a) Does your Government have ma ndatory technical requirements for 
electromagnetic interference of Informatio n Technology equipment?  If so, please 
identify. 
 Yes.  The electromagnetic disturbance genera ted by Information Technology equipment shall 
not exceed the level above which radio a nd telecommunications equipment or other 
equipment cannot operate as intended. 
 (b) Are these requirements harmonized wi th CISPR 22?  If not, please explain the 
current requirements. 
 Yes.  The compliance with the SN EN55022 (emission), and where applicable SN EN61000-
3-2 and SN EN61000-3-3 raises a presumption of conformity with the technical requirements 
on electromagnetic interference.  SN EN55022 is harmonized with CISPR 22. 
2. (a) Does your government have mandatory technical requirements for 
electromagnetic immunity of Information Technology equipment?  If so, please identify. 
 Yes.  Information Technology equipment shall have a level of immunity to the 
electromagnetic disturbance to be expected in  its intended use which allows it to operate 
without unacceptable degradation of its intended use. 
 (b) Are these requirements harmonized wi th CISPR 24?  If not, please explain the 
current requirements. 
 Yes.  Compliance with the SN EN55024 (immunity) raises a presumption of conformity with 
the technical requirements on electromagnetic immunity.  The Norm SN EN55024 is 
harmonized with CISPR 24. G/IT/SPEC/Q4/4/Rev.1 
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  3. (a) What conformity assessment proc edure for electromagnetic compatibility 
(EMC/EMI), which includes both interference and immunity, does your government require for approval of information technology products? 
 1. For Information Technology equipment without radio part of which cannot be 
connected to a public telecommunication ne twork, the manufacturer may choose one 
of the following conformity assessment procedures: 
  (a) Internal production control; 
(b) Internal production control with involvement of a third party (conformity 
assessment body). 
 2. For Information Technology equipment that can be connected to a public 
telecommunication network but without radi o transmitter part, the manufacturer may 
choose one of the following conformity assessment procedures: 
  (a) Internal production control; 
  (b) Technical construction file procedure;   (c) Full quality assurance procedure. 
 3. For Information Technology equipment c ontaining a radio transmitter part, following 
conformity assessment procedures are possible at the choice of the manufacturer if they apply in full technical standards designated by the Federal Office for Communications (OFCOM): 
  (a) Production control plus specific apparatus tests; 
  (b) Technical construction file procedure; 
  (c) Full quality assurance procedure. 
  For these products, the manufacturer who does not apply or apply only partly the 
technical standards designated by the Federal Office for Communications (OFCOM): 
  (a) Technical construction file procedure; 
  (b) Full quality assurance procedure. 
 (b) May suppliers perform these procedures (e.g. testing, declaration of conformity), 
or must third parties perform these procedures? 
 The supplier performs these procedures under its  own responsibility and has to draw up a 
declaration of conformity. 
 In following procedures, a third party (conf ormity assessment body) has to be involved: 
  (a) Technical construction file procedure; 
  (b) Internal production control with involvement of a third party; 
  (c) Full quality assurance procedure. 
 In some defined cases, a conformity assessment body has also to be involved in the procedure 
"production control plus specific apparatus tests". 
 (c) What international guidelines or standa rds, if any, are those procedures based 
on?  If not, what guidelines or standards are they based on?  G/IT/SPEC/Q4/4/Rev.1 
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   The procedures are described in the Swi ss legislation on telecommunication equipment 
(Decree on Telecommunications Equipment; RS 784.101.2) and electromagnetic compatibility (Decree on Electromagnetic Comp atibility; RS 734.5).  Both legislation 
implement the European Union's directives (Directive R&TTE – 1999/05/EC and EMC – 2004/108/EC).  Both directives are based on the European Union's "New Approach". 
4. Has your regulatory authority received any complaint or had any problems regarding 
the EMC/EMI aspects of the approved information technology products?  If yes, how frequent?  And please identify the nature of the complaint/problem. 
 Yes.  We have received complaints on inte rferences to radio communication services.  The 
following problems have been identified: 
 - manufacturer didn't carry out any conformity assessment; 
 - manufacturer didn't carry out a new conformity assessment even if the product has 
been changed; 
 - emission level too high;  - too poor immunity; 
 - bad installation and/or use; 
 - missing information for the user on how to install and/or use the product;  - new phenomena that were not covered by  the EMC standards (neither at national 
level nor at international level). 
  
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