Thanks, Derek
These are all good examples of problems everyone can relate to.
A good domestic one from a colleague of mine recently was that when he
walked near a bathroom in his house while carrying his (FCC Class B)
laptop computer switched on (- he is a workaholic), and if someone was
bathing
Hello group,
Does anyone out there have any views on the applicability of EFT on
cards that will plug into say an ISA or PCI slot. I understand that
comm ports would definitely have to be tested but if you are trying to
test your card for CE marking (only the card, not a system) is it still
Art-
Take a read through UL's Subject 1950 Industry Bulletin, dated June 10,
1998. There is considerable discussion of high-pressure lamps; in
particular, consideration is given to using Contained Atmospheric
Energy (CAE) in the definition of a high-pressure lamp, rather than
just MPa cold/MPa
Radiated Emissions do not appear to be impacted with respect to 50 Hz -vs-
60 Hz; however, Conducted Emissions may be impacted. All EMC testing should
be conducted at the appropriate voltage and frequency.
-Original Message-
From: Dwight Hunnicutt dwight.hunnic...@vina-tech.com
To: EMC
Patrick:
Perhaps the conflict of dates is in the source of the document. The IEC
may say one date and the EU may adopt quite another. As an example: an
EU parallel vote document is usually pretty much in sync with the IEC.
IEC 60950 on the other hand was about 1 and a half years behind the IEC
A test house explained to me that the FCC allows either CISPR or FCC
limits/procedures providing that one can determine worst case.
Consequently, you have to test both ways (120 V 60Hz or 230V 50Hz) to
determine which way you should have tested. So, where are the time/money
savings?
As a
I have encountered certain European agencies requesting that not only are the
conducted emissions required to be performed at 230V 50Hz but radiated
emissions as well. I agree that for conducted emissions it may make a
difference but I have not seen radiated emissions change when the power source
Eric-
You tossed in one line that brings up a parallel question for Europe:
Note that the FCC expects conducted emissions to be
measured at 115 VAC, 60 Hz.
Has your experience indicated that all Euro EMC directive
(emissions/immunity) testing be conducted at 50Hz? Many local EMC labs
do not
Hi Art,
Don't know about IEC 60357, but IEC 950, clause 4.1.5 describes
high-pressure lamp as one in which the pressure exceeds 0.2 MPa
(1500 Torr) when cold or 0.4 MPa (3000 Torr) when operating.
One would hope that the definition for high-pressure would be
Keith,
with over 18 years in EMC I could go on a long time. Some examples this year
already...
My computer ( FCC Class B ) interferes with my cordless phones, to some degree
on all 10 channels.
My FAX machine ( FCC Class B ) interferes with my TV and some channels of my
cordless phones.
Vi Van asked:
Dear All,
I am looking for the contact and email address for the French Radio
and Telecoms Agency.
Can anyone help!
Thanks in Advance.
Vi Van
Lucent Technology
Dear Vi:
Try here:
Mr. P. Conil
Department de la Reglementation du Spectre
Ministere de l'Industrie, des Postes et
Hello World!!!
Can anyone help me, I am trying to find up to date information on a
wide range of environmental issues relating specifically to
Information Technology equipment. The environmental issues and
legislation that I need to research include the use of
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