ctive
also for 6th edition (and J60065), and you have chance to show
that the product complies with the requirements mainly through
desk check, and with few or no re-testing.
In my opinion only.
Regards,
Tom
Tomonori Sato < vef00...@nifty.ne.jp>
URL: http://homepage3.nifty.com/tsato/
This
t a Cry for Help, via Satellite
>
> Fresh from today's New York Times - our favorite Oregonian emergency
> locator tv... :)
>
> The TV That Sent Out a Cry for Help, via Satellite
> By TOM ZELLER Jr.
> Pizza ovens, jumbo score boards, Christmas lights and other
> ap
which simply says that:
The specified distance is the distance between the horizontal
projection onto the groundplane of the closest periphery of the EUT
and the projection onto the groundplane of the center of the axis
of the elements of the receiving antenna.
in its clause 8.2.3?
Regards,
T
"Fundamentals of EMC" where we will have Tom
Braxton (Shure, Inc.) speak to all the terms and specifications that we use in
the daily EMC arena. This is must attend for new engineers!
Please forward this email to anyone that you feel will benefit from our annual
event. (If possible, pl
"Fundamentals of EMC" where we will have Tom
Braxton (Shure, Inc.) speak to all the terms and specifications that we use in
the daily EMC arena. This is must attend for new engineers!
Please forward this email to anyone that you feel will benefit from our annual
event. (If possible, pl
;> The test voltage shall be applied ***simultaneously*** between
>> a ground reference plane and all of the power supply terminals ...
>> and the corresponding figures also indicate that the disturbance
>> are to be injected to all lines at once.
>> However, I
ts nation's requirements. So, until these EU regulations are defined,
it appears the only type of mutual recongnition that will occur will be for
unintentional radiators, such as ITE equipment, and this is already in
place.
Happy New Year, everybody!
Tom Cokenias
EMC/Radio Approvals Consultant
Tom Donnelly wrote:
>> When making measurements to CFR 47, Part 15, and using
>> ANSI C63.4-1992 there are 2 requirements that conflict
>> for measurements at lower frequencies. The first
>> allows broadband antenna use as long as the results
>> can be correlated t
ower.com]
> Sent: Tuesday, May 18, 1999 11:21 AM
> To: 'EMC-PSTC - forum'
> Cc: Tom Unger
> Subject: RE: Surge Suppressors to ground
>
>
> Sorry to re-open a thread that is almost 2 years old, but here goes...
>
> We are designing a product for 120V markets
ail.com" ;
"EMC-PSTC@LISTSERV.IEEE.ORG"
Sent: Tue, May 18, 2010 11:22:24 PM
Subject: Re: [PSES] CE Standard for Power Lines data Transmission System
Amen brother tell it!
Tom Cokenias
T.N. Cokenias Consulting
P.O. Box 1086
El Granada CA 94018
Tel 650 726-1263
Cell 650 302-0887
Sent from my iPho
he local paper had an article
> showing the destruction of the warehouse samples, with photo of bulldozers
> crushing and otherwise rendering useless all the would- be merchandise.
> Pretty impressive. I was working in private sector lab when this happened -
> the article was a great sale
han 10 dB.
6 dB pad at antenna output makes this requirement satisfied regardless of
return loss of the antenna itself, even for biconical and hybrid antennas
which will have very bad VSWR.
Regards,
Tom
On Fri, 14 Jul 2023 22:53:41 +0200,
63-8250 fax
jim.wi...@adtran.com
> --
> From: Grant, Tania (Tania)[SMTP:tgr...@lucent.com]
> Sent: Tuesday, March 23, 1999 10:32 PM
> To: emc-pstc; 'TREG'; NEBS FORUM; 'JIM WIESE'
> Cc: Ron Bernot; Randy Ivans; Mark Vlanich; Jim Brun
l have no trouble understanding
one another, even with differences in spelling, grammar and possibly
idioms. Or as Wikipedia puts it, these are "mutually comprehensible"
(https://en.wikipedia.org/wiki/List_of_dialects_of_English). I
noticed one form of English not mentioned in the Wikip
some basic
>> goniometrics...
>
> But, although I think that the requirement is rather useless when
> we are trying to simulate radio transmitters in close proximity,
> I believe we need to have UFA not smaller than 1,5 m x 1,5 m for
> partial illumination as specified in I
crushing and
otherwise rendering useless all the would- be merchandise. Pretty impressive.
I was working in private sector lab when this happened - the article was a
great sales tool with customers who balked at the expense of doing all that
testing...
Tom Cokenias
T.N. Cokenias Consul
-3.
Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848 (USA)
j...@randolph-telecom.com
http://www.randolph-telecom.com
Hi Joe, Tom,
Thanks! I was not aware of ETS 300 001. Since this standard is available
free of charge (thanks ETSI), I could quickly review.
It appears that yo
cation
only, even though it could be connected to a class B computer as a
peripheral
best regards
Tom Cokenias
On Aug 22, 2013, at 11:48 AM, Binayak Marahatta wrote:
Dear experts,
We wanted to do Verification under FCC rules and We have Digital Class A
product ( touch display for industria
y test for emissions down to 100
or even 20Hz.
B) I don't agree with Ken that "1000 uV/m would represent at least a 20 dB
outage
at frequencies that could possibly interfere with sensor electronics."
See my other posting today adding to Tom Cokenias's calculations to show t
Message-
From: Mark Haynes [mailto:mhay...@dlsemc.com]
Sent: Thursday, October 18, 2001 6:44 PM
To: IEEE EMC-PSTC Discussion List (E-mail)
Cc: Peter Deneault (E-mail); Tom Brenner; Doug Harris
Subject: Motor Drive Grounding Scheme
Greetings All,
I work for a product safety consulting firm
e specified distance is the distance between the horizontal
projection onto the groundplane of the closest periphery of the EUT
and the projection onto the groundplane of the center of the axis
of the elements of the receiving antenna.
in its clause 8.2.3?
Regards,
Tom
Tomonori Sato
URL: http:
ve LEDs and those LEDs will
be driven by RF current, and some may think them as "RF lighting"
in a broad sense.
I asked FCC about this topic, and the answer was that LED lightings
would not be regarded as Part 18 device even if it use RF PWM to
drive the LEDs.
Regards,
Tom
--
Tomo
Just a tiny bit off-topic, but an interesting analysis of functional safety in
motor-control systems, from Analog Devices' Tom Meany, a member of IEC
SC22/MT12, working on the second draft of IEC 61800-5-2
http://bit.ly/2aQOwdT
Cheers,
Barry Rowland
Muenchen
On 4 August 2016 23:18:42
..@lucent.com
> --
> From: JIM WIESE[SMTP:jim.wi...@adtran.com]
> Reply To: JIM WIESE
> Sent: Monday, March 22, 1999 4:06 PM
> To: emc-pstc; 'TREG'; NEBS FORUM
> Cc: Ron Bernot; Randy Ivans; Mark Vlanich; Jim Brunssen; Tom Burke;
&
unless they are separated from live parts by double insulation or
> reinforced insulation
I don't know of the reason of the differences, but it appears clause
22.35 (including the last paragraph "For stationary appliances...")
is for constructions, and clause 22.36 is for e
The dimensional
relationship shown in Figure 1 shall be maintained.
William T. (Tom) Sykes
-Original Message-
From: Brian Oconnell [mailto:oconne...@tamuracorp.com]
Sent: Wednesday, September 24, 2014 3:32 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Crossed-out wheeled bin sy
generally left up to the manufacturer.
Tom Cokenias
T.N. Cokenias Consulting
P.O Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
On Mar 13, 2013, at 10:08 AM, Ed Price wrote:
Scott, what is a "critical component?"
How would I recognize one?
Would it be proper for me to t
>Sent: March 12, 2013 5:30 PM
>To: EMC-PSTC@LISTSERV.IEEE.ORG
>Subject: Re: [PSES] FCC and very low-power wireless devices
>
>Hi John
>
>Section 15.209 has general requirements for radiated emissions for
>intentional radiators (transmitters). At these frequencies you would be
&g
k Times - our favorite Oregonian emergency
locator tv... :)
The TV That Sent Out a Cry for Help, via Satellite
By TOM ZELLER Jr.
Pizza ovens, jumbo score boards, Christmas lights and other
appliances have issued emergency distress signals and
brought search and rescue teams running.
http://www
ar and are
published around February or March of the following year.
best regards
Tom Cokenias
T.N. Cokenias Consulting
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
At 7:42 PM -0500 12/4/04, John Barnes wrote:
EMC-PSTC'ers,
Last week, while browsing through the FCC
axis
of the elements of the receiving antenna.
in its clause 8.2.3?
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
-
This message is from the IEEE Produc
Hi Grace
I was working at the FCC lab at the time (Mike is just a kid compared to me)
and that's pretty much the thinking that was going on.
best regards
Tom Cokenias
T.N. Cokenias Consulting
P.O. Box 1086
El Granada CA 94018
On Aug 3, 2011, at 9:37 AM, Mike Violette wrote:
Hi
st be held in the Community territory.
FW>
FW> - Name and address of the manufacturer, and of the representative
FW>in the Community if the manufacturer is not in the Community,
FW>will become required.
FW>
FW>Regards,
FW>Tom
FW>
FW>
Oops sorry. What Tom Sato said.
Ken Javor
Phone: (256) 650-5261
From: Ken Javor
Date: Mon, 27 Feb 2017 16:57:51 -0600
To:
Conversation: [PSES] Passive Loop Emissions [General Use]
Subject: Re: [PSES] Passive Loop Emissions [General Use]
Starting with an rf potential indicated on an EMI
bf86f141af91ab2d7cd011db47%7C1%7C0%7C637022022355757139&sdata=pfTkgiDnLoJRr07ztNE98TZCCiTRNFVOoONAxeCR%2FPI%3D&reserved=0>).
I noticed one form of English not mentioned in the Wikipedia article, Texas.
All the best, Doug
PS - The bottom line, every Tom, Dick and Harry should avoid cli
hat to install tens of LED lights in a house is
covered by the "intended purpose", shouldn't the LED lights still
comply with the essential requirements of the Directive in that
configuration, too?
Regards,
Tom
> On Fri, Feb 17, 2023 at 6:56 PM Ken Javor
> wrote:
>
I would also like to know how you would run testing on a
> Caterpillar 797. I don't think it would fit in many chambers.)
If international standards are accepted, I think we can measure those emissions
with CISPR 12 test method.
Regards,
Tom
--
Tomonori Sato
URL: http://homepa
; The FCC issued a non-compliance letter. The local paper had an article
> showing the destruction of the warehouse samples, with photo of bulldozers
> crushing and otherwise rendering useless all the would- be merchandise.
> Pretty impressive. I was working in private sector lab when th
ments, the latest and the greatest:
https://apps.fcc.gov/oetcf/kdb/index.cfm
best regards
Tom Cokenias
T.N. Cokenias Consulting
On Jan 29, 2013, at 9:15 PM, itl-emc user group wrote:
> In my experience, TCB’s don’t charge extra for confidentiality unlike the FCC.
> I have not heard of
ve that all of the standard battery voltages now used in Europe
qualify for classification as TNV-3.
Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848 (USA)
j...@randolph-telecom.com
http://www.randolph-telecom.com/
Hi Joe, Tom,
>
>Thanks! I was not aware of
ing mode.
I don't know of the rationale, but I think 20 V/m is not unreasonably high
to test safety aspects of the charging systems.
Regards,
Tom
On Fri, 21 Jul 2023 16:44:29 GMT,
Brian Gregory mailto:brian_greg...@netzero.net>>
wrote:
> Hello colleagues, We are building EV Char
, :-)
Tim Foo
"Sykes, William Thomas (Tom)" wrote on 08/05/2004 07:27
AM
All:
Please refer to the "Guidelines on the application of Directive 89/336/EEC"
at
http://europa.eu.int/comm/enterprise/electr_equipment/emc/guides/chapfive.htm
.
In Section 5.4 "Additional practic
rojection onto the groundplane of the closest periphery of the EUT
and the projection onto the groundplane of the center of the axis
of the elements of the receiving antenna.
in its clause 8.2.3?
Regards,
Tom
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
-
This message is from the IEE
Gert,
Thanks for the mini course Gert, nice to have it all in one place so clearly
explained.
best regards
Tom
On Feb 14, 2008, at 12:50 PM, Gert Gremmen wrote:
My opinion on calibration and verification, please comment:
Calibration is the determination of the measurement
deviations of
aid that they shouldn't cause interference poblem (it is half
of the essential requirements of the Directive) when installed and used
as intended.
Regards,
Tom
>> On Fri, Feb 17, 2023 at 6:56 PM Ken Javor
>> wrote:
>>
>>> I’m finding this an extremely interesting
ORG
Subject: Re: FCC ** LOGO vs Verification Label RequirementT***
Hi Dennis
I think what we see often are intentional radiators that are also
computer peripherals eg WiFi USB dongles. These would need DoC logo
or separate certification per 15.101, yes?
best regards
Tom
On Apr 1, 2009, at 3:49 P
Hi Dennis
I think what we see often are intentional radiators that are also
computer peripherals eg WiFi USB dongles. These would need DoC logo
or separate certification per 15.101, yes?
best regards
Tom
On Apr 1, 2009, at 3:49 PM, Dennis Ward wrote:
> Of course, having said that some
t what I have
> stated. (I would also like to know how you would run testing on a
> Caterpillar 797. I don't think it would fit in many chambers.)
If international standards are accepted, I think we can measure those emissions
with CISPR 12 test method.
Regards,
Tom
--
Tomonori
urrent
remains below 100 mA in most cases. For safety compliance, I
believe that all of the standard battery voltages now used in Europe
qualify for classification as TNV-3.
Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848 (USA)
j...@randolph-telecom.com
http://www.randolph-
riphery of the EUT
and the projection onto the groundplane of the
center of the axis
of the elements of the receiving antenna.
in its clause 8.2.3?
use RF PWM to drive LEDs and those LEDs will
be driven by RF current, and some may think them as "RF lighting"
in a broad sense.
I asked FCC about this topic, and the answer was that LED lightings
would not be regarded as Part 18 device even if it use RF PWM to
drive the LEDs.
Regards,
Tom
-
to the wonderful world of EMC where "I said maybe" is
often the final answer ;)
best regards
Tom Cokenias
T.N. Cokenias Consultingwww.tncokenias org
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
cell 650 302 0887
At 7:51 AM -0800 3/22/
to the wonderful world of EMC where "I said maybe" is
often the final answer ;)
best regards
Tom Cokenias
T.N. Cokenias Consultingwww.tncokenias org
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
cell 650 302 0887
At 7:51 AM -0800 3/22/
demonstration at
a show and/or taking orders.
I don not find any exclusions for demos or shows listed in the EMC
directive. This analysis is my own of course.
Tom Whissel
Senior Compliance Engineer
Cabletron Systems, Inc.
--
K.50.
Based on this information, the TC-108 US Tag is also putting a comment together
authored by Tom Burke that mentions that when 62368-3 was sent out for CDV
(vote), they were not aware of the significant updates that went into K.50 to
get it lined up with the prevailing industry practices
Bill, thanks for the complement. One of my mentors, Dr. Tom Van Doren, of the
University Missouri - Rolla, would say “the more different “ground” symbols he
saw in a schematic, the more business he knew he would get”.
Ken
___
I'm here to help you succeed! Feel free to
e
qualify for classification as TNV-3.
>
>
>
>Joe Randolph
>Telecom Design Consultant
>Randolph Telecom, Inc.
>781-721-2848 (USA)
>j...@randolph-telecom.com
>http://www.randolph-telecom.com/
>
>
>
>
>
>
>Hi Joe, Tom,
>>
>>Thanks! I was not aware
.
Hope this helps. Good luck.
best regards
Tom Cokenias
T.N. Cokenias Consulting www.tncokenias.org
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
cell 650 302 0887
> Isn't this allowed? Measure the EUT in the chamber to see if the signal
> at this
in its clause 8.2.3?
Regards,
Tom
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
-
ut this topic, and the answer was that LED lightings
would not be regarded as Part 18 device even if it use RF PWM to
drive the LEDs.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
FCC about this topic, and the answer was that LED lightings
would not be regarded as Part 18 device even if it use RF PWM to
drive the LEDs.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Stev
lamps as a whole.
>
> I only said that they shouldn't cause interference poblem (it is half
> of the essential requirements of the Directive) when installed and used
> as intended.
>
> Regards,
> Tom
>
>
>>> On Fri, Feb 17, 2023 at 6:56 PM Ken Javor
&
u have more than one ambient
frequency.
Hope this helps. Good luck.
best regards
Tom Cokenias
T.N. Cokenias Consulting www.tncokenias.org
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
fax 650 726 1252
cell 650 302 0887
> Isn't this allowed? Measure the EUT in the cha
>
> And what about ANSI C63.4-2003, which simply
>says that:
>
> The specified distance is the distance between
>the horizontal
> pro
CC about this topic, and the answer was that LED lightings
would not be regarded as Part 18 device even if it use RF PWM to
drive the LEDs.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Steve
> O&#x
ied to
a
%> fast switching device is provided by the interplane capacitance.
%> [snip]
%>
%>
%> Regards,
%> Barry Ma
%>
%>
I attended an EMC seminar conducted by Dr. Tom Van Doren on June 8, 1992
and then another one on March 23, 1995 by Dr. Van Doren,
's
or early 2000's) you will or should meet the new K.50.
Based on this information, the TC-108 US Tag is also putting a comment together
authored by Tom Burke that mentions that when 62368-3 was sent out for CDV
(vote), they were not aware of the significant updates that went into
complement. One of my mentors, Dr. Tom Van Doren, of the
University Missouri - Rolla, would say “the more different “ground” symbols he
saw in a schematic, the more business he knew he would get”.
Ken
___
I'm here to help you succeed! Feel free to call or email
raise me the question.
> That being said, I'm not an expert in automotive EMC and I encourage
> anybody with better information to amend or correct what I have
> stated. (I would also like to know how you would run testing on a
> Caterpillar 797. I don't think it wo
ar shall only be
used in conjunction with the crossed-out wheeled bin. The bar shall not
contain any text or any kind of additional information. The dimensional
relationship shown in Figure 1 shall be maintained.
William T. (Tom) Sykes
-Original Message-
From: Brian Oconnell [mailto:oconne
).
Gert Gremmen
From: Ken Wyatt [mailto:k...@emc-seminars.com]
Sent: Wednesday 28 June 2017 22:03
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] USB dongle connector shield filtered grounding
Bill, thanks for the complement. One of my mentors, Dr. Tom Van Doren, of the
University
elecom, Inc.
781-721-2848 (USA)
j...@randolph-telecom.com
http://www.randolph-telecom.com/
Hi Joe, Tom,
Thanks! I was not aware of ETS 300 001. Since this standard is available
free of charge (thanks ETSI), I could quickly review.
It appears that you are getting information from Table 1.5.1,
front or rear, of the EUT.
>
> Does anybody know clearer interpretation about
>this?
>
>
> And what about ANSI
ike to know how you would run testing on a
> Caterpillar 797. I don't think it would fit in many chambers.)
If international standards are accepted, I think we can measure those emissions
with CISPR 12 test method.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato
ential
> mode signal currents are necessary. (balanced signal twisted pairs, common
> mode coils, transformers).
>
> Gert Gremmen
>
>
> From: Ken Wyatt [mailto:k...@emc-seminars.com]
> Sent: Wednesday 28 June 2017 22:03
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject:
mailto:gh...@pettitemcconsulting.com>
From: Ken Wyatt [mailto:k...@emc-seminars.com]
Sent: Wednesday, June 28, 2017 1:03 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] USB dongle connector shield filtered grounding
Bill, thanks for the complement. One of my me
nsulting LLC
gh...@pettitemcconsulting.com
From: Ken Wyatt [mailto:k...@emc-seminars.com]
Sent: Wednesday, June 28, 2017 1:03 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] USB dongle connector shield filtered grounding
Bill, thanks for the complement. One of my mentors, Dr. T
additional
info.
Thanks again!!
Charlie Bayhi
--
Inchcape's SSF office call Pavol Breder at 415-871-1414
Consultant - Pete Perkins p.perk...@ieee.org (503) 452-1201
TUV PS The main contact is Jill Geppert at 508 73
801 - 878 of 878 matches
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