Brian
The critical factor for automotive electronics is whether or not they are
'immunity related'.
Any equipment that relates to control of the vehicle in any way; e.g. engine
management, braking system, steering, evn automatic screen wiper control, is
'immunity related'. If the equipment that
Chris,
I appreciate you comments and also the additional information related to
your experience.
The additional data contributes to your assessment conclusions.
Also, from your previous comment about the three options:
1. Self-testing is not comfortable but sometimes necessary.
2.
In message
ofeb4d51e3.b8396804-on85257497.003fd94d-85257497.0041f...@lexmark.com,
dated Thu, 31 Jul 2008, Oscar Overton oover...@lexmark.com writes:
Tell them it is all for the cause of science and the well being of
mankind as a whole.
..and will improve their personal relationships. (;-)
--
2007/28/EC is a huge typo - I intended 2007/46/EC
Probably a 'hang-over' from reading the weirdo stuff in
90/642/EEC and 2007/28/EC(helping my wife get a shipment of
cactus across the pond). But I want to know how people in the UK
and the nordic areas manage to keep this stuff alive in that
In message 000201c8f312$a36a6940$d600a...@tamuracorp.com, dated Thu,
31 Jul 2008, Brian O'Connell oconne...@tamuracorp.com writes:
But I want to know how people in the UK and the nordic areas manage to
keep this stuff alive in that bizarre climate.
In the south of UK, some will grow
Listmembers,
The original poster wrote:
I have a question on the use of a 3 meter fully anechoic chamber.
Can this 3 meter chamber be used to qualify a product for FCC or CISPR
class A, since the required test distance is 10 meter?
I thought another clause in FCC Part 15 was important,
In message
of61e94bfa.fb76a93e-on88257497.00594c69-88257497.005a9...@slpower.com,
dated Thu, 31 Jul 2008, pat.law...@slpower.com writes:
Is it practical to get corresponding measurements in a 3m semi-anechoic
chamber, let alone a fully-anechoic chamber?
This is an elephant in the EMC room
Data from a 3m chamber has been used for over 20 years for FCC Class A
requirements. It used to meet the NSA with two antennas/masts so 30-200 and
200-1000 MHz could be done at the same time. I hear that the first 3m chamber
qualified to do that may be for sale by Florida Atlantic University in
Greetings John,
What is the possibility to have CISPR accept 3m measurement distance,
unconditionally, for Class B devices? I feel 3m is more realistic in the
residential environment. I argue with (friendly) BSMI (Taiwan's authority).
The BSMI regulator tells me if CISPR accepts 3m
In message
2a93eb060807311215h30f89a09r2c23483501c76...@mail.gmail.com, dated
Thu, 31 Jul 2008, Grace Lin graceli...@gmail.com writes:
What is the possibility to have CISPR accept 3m measurement distance,
I don't know. Maybe Ghery could comment?
unconditionally, for Class B devices? I
Will someone kindly point me to a source where I can obtain the EMC standards
(KN ) for South Korea? English is preferable, although I understand that
some standards may not have an official English translation.
Thanks,
Jim
__
James L. Knighten, Ph.D.
EMC Engineer
Hello all,
I appreciate everyone's responses on this. Some comments raise another
question.
Since there needs to be a ground plane to meet NSA, but an absorber lined
floor is desirable for immunity testing, how is this normally resolved?
The only solution I can think of would be to make the
CISPR 22 has a note that allows 3 meter testing for small class B devices. It
does not apply to class A devices, nor large class B devices. That said, there
is nothing going on to change this in CISPR 22. Part of the reason we're not
working on it is that multiple limits at test distances of
Dear Jim
You can see the KN EMC standards list at below URL;
http://approval.rrl.go.kr/join/databoard/law/list.jsp?lw_type=4
http://approval.rrl.go.kr/join/databoard/law/list.jsp?lw_type=4
FYI, Korea RRL do not provide latest official English version yet but you can
see the old English version
Hi All,
Just posted my Friday video podcast video.
The link to the page is:
http://emcesd-podcast.com/weekly_podcasts/
Just click on: This week's show - Jingling Change, ESD, and Scope Probes!
There are three videos posted there. The direct link to this week's
program is:
Jim,
You can order Korean standards from the following website, but the standards
are in Korean.
http://www.kssn.net/English/WebStore/C_WebStore_list.asp
Many of the standards (e.g., KS C CISPR 22) are IEC standards translated into
Korean.
Regards,
Don Gies, N.C.E
Senior
Chris,
On the topic of RF exposure, I will throw in my two pennies.
Years ago, I was interested in the topic of frequency jamming of radio
stations. I thought it would be interesting to build a frequency jamming
device that would cause home radios to stop working. I built a random noise
Oscar - I will take some pot shots at my experience.
The wire resistors are these large units where the wire coils are in a
frame.
The whole assembly was covered with dust.
As I dumped 10-20KW into these loads they did heat up and cause some fumes.
I do have alergies and so maybe there was
Remember the Swedish auto plant? That didn't have a CRT magnetic field
problem? Just paint particles attracted to CRT's and repelled onto the word
processor operator's faces?
Cortland
KA5S
[Original Message]
From: Chris Wells radioactive55...@comcast.net
To: Oscar Overton
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