My first response on EMC-PSTC was a bit misleading! For ITE and other portable devices with cigarette lighter power adapters, 95/54/EC testing is required. However, 95/54/EC should not be listed as a directive on the Declaration of Conformity. It should be listed as a technical standard under the EMC Directive. Since 95/54/EC is not a "new approach directive" it may not be used directly for CE marking.
For CE marking, the EMC Directive guidelines, para. 15.3 allows the use of 95/54/EC to demonstrate conformity with the EMC Directive. The technical requirements are within 95/54/EC, and no harmonized test specs. are listed nor required. 95/54/EC covers both vehicle EMC testing and EMC of electronic sub-assemblies (ESA). ESAs are defined as electrical or electronic devices intended to be "part of a vehicle." Therefore, portable devices with cigarette lighter power adapters are not ESAs and will not require e-marking. Therefore, for ITE with power adapters that may be used in an automobile, the declaration of conformity should list the Low Voltage and EMC Directives. Specific standards under the EMC Directive would typically be EN 55022, EN 50081-2 and 95/54/EC. Under 95/54/EC, immunity testing is not required for "ESAs whose functions are not involved in the direct control of the vehicle." Therefore, additional testing under 95/54/EC will involve only NB and BB radiated! emissions tests that may be performed either on an OATS or in an anechoic chamber. These tests may be performed in conjunction with the EN 55022 tests, limiting the additional cost impact. 1m antenna spacing is used, quasi-peak detection for the BB test, peak or average for NB. ISO 7637-1 automotive powerline transient immunity tests are recommended, but not specifically called out under the EMC Directive framework. If e-marking is required, the device is by definition either a motor vehicle or an ESA that becomes part of a motor vehicle. Conformity must be demonstrated by type testing, witnessed by a Notified Body under 95/54/EC. The Notified Body may impose other requirements such as ISO 7637-1 powerline transient testing. ESD testing is discussed in paragraph 8.4 of 95/54/EC and should not be required for either ESAs or for motor vehicles. Doug Frazee EMC Compliance Engineer Windermere Information Technology Systems MILCOM Compliance Laboratories (MCL) division 401 Defense Highway Annapolis, MD 21401 USA (410) 266-1793 (410) 266-1751 FAX [email protected] -----Original Message----- From: [email protected] [SMTP:[email protected]] Sent: Tuesday, March 24, 1998 8:54 AM To: [email protected] Subject: CE and/or e-mark for products operated in vehicles (2) Dear compliance colleagues, thank you for your comments which I have received until now. The problem is the appliance of the e-mark directive on products which are not intended to be fitted (permanently installed) into a car, like a laptop computer or handy. This seems to be once more a "grey area" which is not clearly defined by the people creating those directives. Have anyone of you seen comments listed up in the operating instructions of a vehicle which do not allow to operate electronic products in the car environment without observing e-mark or other specified requirements ?? Kind regards Andreas Thomas Toshiba Europe
