RE: Alarm Systems Compliance

2000-05-17 Thread Andrew Wood
Gert, As a relative newcomer to the world of EMC compliance, please allow me to question your statement below to clear things up in my own mind. I thought that as a manufacturer, we have the option of EITHER: a) declaring conformity against an appropriate standard or b) preparing a

RE: Alarm Systems Compliance

2000-05-16 Thread Geoff Lister
Don, I had a look through the ITE immunity spec EN55024 to see if it contained a better definition of acceptability. Section 7 defines performance criteria, and places the level of acceptability as that defined by the manufacturer. If it is not defined by the manufacturer, then it is what the

RE: Alarm Systems Compliance

2000-05-16 Thread John Juhasz
Don, The manufacturer defines the acceptable level of degradation. It must be consistent through out all the reports on your products. When I test my products I specify that the image must be 'clearly discernable' (i.e. if you can see the image of a person, but you can't easily tell whether it's

RE: Alarm Systems Compliance

2000-05-16 Thread Gert Gremmen
The solution is to be found in the Criteria being defined for transients tests. EN 50082-1 defines criterion B for EFT testing. Performance loss (full loss) is allowed , but only if the equipment is self restoring it's mode of operation after the test. The authors of the 130-4 did have the