I would agree with your interpretation, with a caveat in regard to
your use of four digits for the year.
We have, in the past, been told by the MHRA (the enforcing body for
the Medical Devices Directive in the UK) that we were not allowed to
put the year number on DofC's because it might be
In message p06240801c46a9cb4a264@[192.168.1.30], dated Tue, 3 Jun
2008, Nick Williams nick.willi...@conformance.co.uk writes:
We have, in the past, been told by the MHRA (the enforcing body for the
Medical Devices Directive in the UK) that we were not allowed to put
the year number on DofC's
According to Annex III, there is no mention as to a date that the DoC is
signed by the signatory. Therefore, is the the last two digits of the year
in which the CE marking was affixed (for the first time) the same as the
date a signatory signed a DoC, if it appears on the DoC?
Best regards,
Ron
In message nbenipnmgoglomnalfjlaefbcnaa.rwell...@wellman.com, dated
Tue, 3 Jun 2008, Ronald R. Wellman rwell...@wellman.com writes:
According to Annex III, there is no mention as to a date that the DoC
is signed by the signatory. Therefore, is the the last two digits of
the year in which the
Our company sells ITE systems that are housed in commerial 19 racks. The
system is designed to be fault tolerant and redundant, so each rack has two AC
mains cords.
We do our own EMI certification testing (we're an accreditted lab), and our
typical EUT consists of two of these rack, so there
In message
809376ab0310a746b991380cb827f8e6017d1...@susday7659.td.teradata.com,
dated Tue, 3 Jun 2008, Flavin, John john.fla...@teradata.com writes:
Our question is how to place a relatively large number of LISNs and
satisfy the standards' requirement of the 80cm spacing of the EUT and
First a direct response to the question posed, then a challenge to the premise
upon which it is based. The second comment, if legitimate, is more important
than the first.
You could use one dual LISN, or one LISN per current-carrying power conductor,
if you had eighteen different
One LISN per power cord is acceptable. One power cord per LISN is required
for the power cord being measured. That way you know that the emissions being
measured are from that cord, and not another one.
This was simpler with the old design – two cords comes out of the cabinet,
each to its
John,
Way back when, I worked on something similar. One power cord of sufficient
size could run the whole thing but the cleanup crew had a tendency unplug it
to run the vacuum cleaner. So redundant cords were put into place, which if
plugged into the same branch circuit, all stopped when the
Not going to argue chapter and verse of the standards, nor make a case they
should be changed – been there, done that, waste of time. However, they have
departed significantly from the original intent and that leaves one asking:
“Why are we even doing this?”
The original intent of conducted
tongue in cheek mode ON
Are we not as EMC engineers supposed to interpret the
standards to our economic advantage so we can ship
products without delays for redesign and still have
some rational for explaining why we did what we did?
After all, if there is no foul, there is no fault,
because I
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