On Fri, 5 Apr 2024 22:01:29 GMT,
Brian Gregory wrote:
> Hello and Happy Friday, I've got a sales guy telling me our 120/240V EUT
> needs two pair of single-phase LISNs for our CE test bench.That's only
> slightly cheaper than a 3-phase unit at > 50A, but very bulky. Can someone
> remind me
On Tue, 27 Feb 2024 08:39:10 -,
"James Pawson (U3C)" wrote:
> This looks like distance between injection point and EUT.
>
> This diagram is for direct injection through a resistor with no CDN. The
> resistor forms the ‘C’ or coupling part of the CDN, and the “decoupling
> device” forms t
On Mon, 6 Nov 2023 15:56:55 +0100,
Amund Westin wrote:
> I can’t find any reference to A2:2021 in any EMC Harmonized standard list.
>
> Does it mean we should not make any reference to in in the DoC?
For Directive 2014/30/EU and similar directives/regulations,
as it is also written in the Do
On Fri, 21 Jul 2023 16:44:29 GMT,
Brian Gregory wrote:
...
> We are building EV Chargers for residential markets (not just US)
> and one of the safety applicable standards is UL 2231-2. It calls
> out IEC 61000-4-3 for immunity testing parameters, which states a
> requirement for a field stren
On Fri, 14 Jul 2023 22:53:41 +0200,
Paolo Roncone wrote:
> I'm having a discussion with my colleague about the use of a fixed 6dB
> attenuation pad at the input of the EMI receiver for radiated EMI in the
> range 30MHz - 6GHz.
> The pad I'm using is a Weinschel 6dB N-type 50ohm.
> My colleague
On Tue, 11 Apr 2023 15:45:29 -0400,
Brian Kunde wrote:
> I have been given two samples of metal plates; one plated in our current
> material and the other with a new plating material we want to switch to in
> production. I have been tasked to compare the electrical surface
> conductivity.
>
>
On Wed, 5 Apr 2023 11:23:03 +0100,
"James Pawson (U3C)" wrote:
> In running through some safety checks on a customer's product I've come
> across what appears to be a conflict between two clauses. This resulted in
> some head scratching! I'm sure it is my misunderstanding or misreading, but
> I
On Thu, 6 Apr 2023 11:32:20 +0900,
Youngsik Kim wrote:
> According to FCC part 18.305 FIELD STRENGTH LIMITS, a test article of Any
> type unless otherwise specified has a measurement distance of 300 meters,
> but I want to measure it at a distance of 3 meters because I need to
> measure it in a
On Sat, 18 Feb 2023 19:12:57 +0900,
"T.Sato" wrote:
...
> However, in case of the EMC Directive, it requires "... it complies
> with this Directive when properly installed, maintained and used for
> its intended purpose."
>
> If if is considered that to insta
r is responsible.
However, if the installer follow the provided instruction if any
(and electric code, if applicable) but still caused interference
problem, the installer (maybe end-user himself, who is probably layman
at least for EMC) still responsible for that?
Regards,
Tom
> On Sat, Feb
On Fri, 17 Feb 2023 21:12:40 -0800,
John Mcbain wrote:
> The key is testing the . If all the light bulbs in your house and
> the connecting wiring was sold as a single product, then presumably it
> would have been tested for EMC in that configuration. I doubt that is what
> happened. 😆
Well
On Thu, 7 Jul 2022 14:19:34 +,
"Paasche, Dieter" wrote:
> Is there a requirement to test harmonics in Japan to obtain VCCI on an ITE
> equipment.
> There is a JIS C 61000-3-2 standard, but it is required by VCCI?
No, it it not required by VCCI.
Compliance with JIS C 61000-3-2 is strongly
On Tue, 3 May 2022 10:42:23 +0100,
"James Pawson (U3C)" wrote:
> A question I get asked by our customers, and that I've not found a
> satisfactory answer to, is why are there steps in the limit lines for
> radiated emissions?
>
> This kind of leads to the question of how do limit lines get spec
On Fri, 25 Mar 2022 21:28:48 +,
Ryan Jazz wrote:
> We have a Short Range Device transmitter and corresponding receivers we
> install in various enclosures for which we have test reports from different
> US labs.
> Transmitter power is less than 10mW and uses the 2.4GHz band.
> The various
On Thu, 26 Aug 2021 12:22:26 +0200,
Thomas Stolle wrote:
> We have to recertificate a device. From EN62061 we changed to
> EN61326-3-1.
> In EN61326-3-1 in table 6 (german version) they discribe, that signal
> lines, which connected to power supply have to test with 2kV symmetric
> an 4kV asymm
On Wed, 10 Mar 2021 07:03:43 +,
David Shidlovsky wrote:
> Any opinions as to when testing conducted and radiated missions of a medical
> device being tested to IEC 60601-1-2 can be performed to CISPR 14-1 or CISPR
> 32 instead of CISPR 11?
> Would it be more appropriate to test a medical
On Sun, 31 Jan 2021 11:41:10 -0700,
Richard Georgerian wrote:
> The European Journal has listed only the EN 62311:2008, whereas at the
> Cenelec webpage it has EN IEC 62311:2020. The "EN" in, EN IEC 62311:2020,
> implies that it is a harmonized standard and should be in the European
> Journal.
On Fri, 2 Oct 2020 21:34:17 +,
MARIO DE ARANZETA wrote:
> I've read information on several websites about extremely low power devices
> for Japan. The fundamental limit being 500uV/m@3m for frequencies below 322
> MHz. Does anyone know if this is a Q-P or Average.Also what is the limit
Hello Peter,
On Wed, 4 Mar 2020 22:54:40 +,
06cee064502d-dmarc-requ...@ieee.org wrote:
> Are there any other government agency that can do safety tests beside JET in
> Japan? I have been dealing with JET directly and it has been a nightmare due
> to their lack of knowledge of ITE stan
On Mon, 16 Sep 2019 02:51:17 +,
06cee064502d-dmarc-requ...@ieee.org wrote:
> I have a client that design and manufacture products for usein
> non-residential environment. This product consists of a BT module. I am
> toldthat the product must meet Class B emissions. Is this correct? Wha
On Mon, 22 Jul 2019 08:28:13 +,
"Rodriguez, Daniel (ESP)" wrote:
> Is there any regulation specifically for equipment to an EU ship apart of
> normal regulations/directives (EMC, LVD, RoHS)?
> Consider that this equipment is not lifesaving, marine pollution, fire
> protection, navigation
On Mon, 13 May 2019 14:36:54 -0600,
Richard Georgerian wrote:
> In IEC 61000-4-9, Section 7.3 it states the following -
>
> "Table-top EUT's shall be placed on a non-conductive table."
>
> Up until now, I have always thought that "non-conductive" had meant no
> metals, such as iron, steel, al
On Fri, 22 Feb 2019 14:39:46 +,
Jim Hulbert wrote:
> Yes, FCC requirements for this type of equipment are not very practical.
> As a side note, such large equipment is industrial in nature, which may lead
> one to believe they would fall under FCC Part 18 for ISM instead of Part 15.
On Fri, 8 Feb 2019 11:43:30 +,
John Woodgate wrote:
> CISPR standards do not cover the above, but I suppose military and
> aviation standards may do. Is there anything available free of
> charge?
MIL-STD-461 RE101 covers 30 Hz to 100 kHz magnetic field measurement
using 13.3 cm loop at di
John,
On Mon, 31 Dec 2018 17:42:39 +,
John Woodgate wrote:
> Hello, Sato-san. Since mains outlets rarely have PE terminals, is the
> built-in wiring in homes also just 2-core (no PEC) for 100 V and
> 3-core (no PEC) for 200 V?
These days,
o 200 V outlets (typically used for high-power
s,
Tom
--
Tomonori Sato
URL: http://t-sato.in.coocan.jp
> -Original Message-
> From: T.Sato [mailto:vef00...@nifty.com]
> Sent: 07 December 2018 14:04
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: Re: [PSES] Japanese manis leads
>
> John,
>
> On Fri, 7 Dec 201
John,
On Fri, 7 Dec 2018 10:54:18 +,
John Woodgate wrote:
> In Japan, are 3-core (L, N, PE) mains leads widely used for
> single-phase products or are the majority of products safety Class II,
> with just L and N?
At least for household products, majority of products are Class 0
and some
On Wed, 5 Dec 2018 10:10:22 +,
Andre Gomes Videira wrote:
> We have some products with a current higher than the Surge test CDN from many
> labs in our region can withstand.
> So, we found a lab that does an alternate Surge test.
>
> Instead of connecting the product to the CDN, they conn
On Tue, 24 Jul 2018 14:35:57 +0200,
Amund Westin wrote:
> If a device is permanent connected to an uninterruptible power supply (UPS)
> via its AC input port, can the Voltage dips and interruption test be
> omitted? It could sound like a possibility, but maybe it depends on the UPS
> performanc
On Mon, 25 Jun 2018 19:33:18 +,
Chester Summers wrote:
> Does the FCC require labeling on digital controllers used on earth moving
> machinery, or is the finished product category exempt? These devices may
> control engines or various electric or hydraulic implements, and are 12-24Vdc
>
On Wed, 4 Apr 2018 05:38:41 -0700,
Grace Lin wrote:
> Is there any harmonized standards applicable to 13.56 MHz RFID devices?
>
> The following four standards are listed in the latest published list
> standards (March 9, 2018). It seems there is no one applicable to a 13.56
> MHz RFID device.
Paolo,
When QP level didn't exceed the QP limits (if our client wish to
have some minimum margin in the test, QP limits minus the margin)
for continuous disturbances, we will not evaluate discontinuous
disturbances.
As you said, the standard says "Discontinuous disturbances shall be
assessed WHEN
its
EUT port impedance is j4.7 ohms at 150 kHz.
Regards,
Tom
--
Tomonori Sato
URL: http://t-sato.in.coocan.jp
>> From: "T.Sato"
>> Reply-To: "T.Sato"
>> Date: Tue, 12 Sep 2017 21:58:54 +0900
>> To:
>> Subject: Re: [PSES] LISN Calibratio
On Mon, 11 Sep 2017 16:32:09 +,
Mac Elliott <0a115b29e815-dmarc-requ...@ieee.org> wrote:
> We are interested in doing some in-house LISN calibrations (impedance
> verification only using network analyzer) and need to develop an uncertainty
> budget.
> Does anyone happen to have a budg
Hello members,
Thanks all who responded.
I hope CISPR makes this topic clear in near future.
Regards,
Tom
--
Tomonori Sato
URL: http://t-sato.in.coocan.jp
On Sat, 22 Jul 2017 03:10:27 +0900,
"T.Sato" wrote:
> Hello members,
>
> I want to hear of your opini
Hello members,
I want to hear of your opinion - while emission measurement for CISPR 32,
integrated radio transmitters must transmitting?
Although the standard is not clear whether radio transmitter can be set off in
emission measurement, I believed we can set radio transmitter off, as:
- CIS
On Mon, 8 May 2017 22:32:38 +,
Matthew Wilson wrote:
> In regards testing, for example's sake, a printer with a RS232 serial port
> under EN55032 for EMC, where does the host 'laptop' PC to generate the RS232
> signals (most likely via a USB-RS232 adapter from the laptop's USB port) get
On Wed, 19 Apr 2017 18:51:28 -0700,
"Ghery S. Pettit" wrote:
> EN 55024 is based on CISPR 24:2010. Without looking at a copy of the EN
> document (which, IIRC, only provides references), CISPR 24 clearly has a
> table for a port called DC input. So, the short answer is, yes, there are
> co
On Tue, 28 Mar 2017 21:37:41 +0200,
Michael Loerzer wrote:
> in comparison to the EU EMC Directive art. 19 and annex I no. 2 "essential
> requirements for fixed installations" has US FCC similar regulations to show
> compliance?
For Part 15 devices, exemption specified in 47 CFR 15.103 may app
On Mon, 20 Mar 2017 19:24:23 +,
"Grasso, Charles" wrote:
> Aside from the obvious air discharge tests around the SD card slot (with and
> without the SD card installed) are there
> any concerns regarding the ESD performance of the SD card during INSERTION?
Only a guess...
SD card may be
On Wed, 1 Mar 2017 00:12:22 -0500,
Grace Lin wrote:
> Is EMC compliance a mandatory requirement to obtain Japan PSE approval for
> a lighting equipment? If yes, does it require emissions only (CISPR 15)?
> Or. does it require both emissions and immunity compliance?
If the lighting equipment is
On Mon, 27 Feb 2017 12:15:43 +,
"Price, Andrew (Leonardo, UK)" wrote:
> The customer has requested an extended magnetic field emission test over the
> range 100kHz to 2MHz with a limit defined in dBpT.
> The antenna to be used is an EMCO 6512 which has it correction factors
> provided in
On Mon, 8 Aug 2016 04:30:04 +,
itl-emc user group wrote:
> According to ANSI 63.4: 2014 Clause 4.7.3 "Standard gain horns need not be
> periodically recalibrated, unless damage or deterioration is suspected or
> known to have occurred. If a standard gain horn is not periodically
> recali
On Tue, 12 Jul 2016 02:08:04 +0100,
John Woodgate wrote:
> Slight under-compensation would cause a brief overshoot to 138 V. In my
> opinion, probes can't be calibrated except with the scope they are
> exclusively used with. Covering the cal adjuster with a sticker shows a deep
> misunderstandi
to.in.coocan.jp
> On Friday, May 27, 2016 2:59 PM, T.Sato wrote:
>
>
> On Fri, 27 May 2016 21:37:01 +,
> MARINA PEYZNER wrote:
>
>> I am confused with Note below the Table 9 in IEC 61000-1-2 Ed. 4 standard.
>> I am under impression that we have to
On Fri, 27 May 2016 21:37:01 +,
MARINA PEYZNER wrote:
> I am confused with Note below the Table 9 in IEC 61000-1-2 Ed. 4 standard.
> I am under impression that we have to create Immunity test levels given in
> this Table with placing antenna at a distance of 0.3 m but this is in
> contrar
On Mon, 23 May 2016 05:22:07 +,
itl-emc user group wrote:
> According to Clause 5.2.2.1 "Requirements applicable to all ME EQUIPMENT and
> ME SYSTEMS", :
> "For all ME EQUIPMENT and ME SYSTEMS, the technical description shall include
> the following information:
> a) the compliance for ea
On Wed, 18 May 2016 21:19:00 +,
John Allen wrote:
> I would like to get thoughts on if EMC testing is required for CE on a
> product that does generate noise, but is installed 30 feet below the surface
> of water.
>
> I'm guessing conducted radiation is still a concern, but what about r
On Fri, 29 Apr 2016 07:14:05 +,
"Pawson, James" wrote:
> I have some questions about anechoic chambers that I need some help with and
> I'm sure there is some expertise in this group that can help.
>
> 1) My understanding is that an anechoic chamber is meant to simulate a
> reflecti
Did you take a look at AR's "bent element" LPDAs such as ATR80M6G?
http://www.ar-amps.com/html/find-it-fast-antennas.asp
On Fri, 8 Jan 2016 20:32:58,
"Kunde, Brian" worte:
> I'm looking for suggestions on the best antenna to use for Radiated Immunity
test according to IEC 61000-4-3 between 8
On Thu, 5 Nov 2015 19:51:03 +,
"Kunde, Brian" wrote:
> With the RoHS Directive kicking in at different times for different
> Categories of products, I'm starting to see the RoHS Directive listed on
> Declaration of Conformities. However, I have also noticed many companies
> generating t
On Fri, 31 Jul 2015 14:59:27 +,
"Pawson, James" wrote:
> I'm trying to calculate the distances/angles at which a maximum (in phase) or
> minimum (anti-phase) signal would occur on an OATS/SAC.
...
> Is there a standard equation for calculating the reflection angle on an
> OATS/SAC with a
On Wed, 13 May 2015 15:35:23 -0500,
kevin.mccandl...@schneider-electric.com wrote:
> I was taught that when using harmonized standards to justify Presumption
> of Conformity, you must use the most relevant standard to your
> product/application.
>
> So if there is a product/family standard that
On Sat, 9 May 2015 12:27:51 +0200,
"ce-test, qualified testing bv - Gert Gremmen" wrote:
> Partial Illumination is the term for the solution to your question.
> EN 61000-4-3 mentions it explicitly.
> Shift the antenna, and repeat the test until all areas have been
> illuminated.
> It requires s
On Wed, 29 Apr 2015 13:59:05 +,
David Gelfand wrote:
> Agreed, but apparently BSMI does not. The text is in Annex G.1 " If the EUT
> includes a visual display or monitor..."
CISPR 22 defines "EUT" as "representative ITE or functionally interactive
group of ITE (system) which includes
On Mon, 20 Apr 2015 23:20:12 +,
"Crane, Lauren" wrote:
> When having a computer system EMC tested, and different hard disk
> options are expected to be used over time, but the exact details
> (e.g. part number) of those hard disks is not yet known other than
> the requirement that they be c
On Wed, 11 Mar 2015 18:48:15 +0800,
Wan Juang Foo wrote:
> I am curious to know if UNECE Regulation 10 has replaced the Automotive EMC
> Directive (2004/104/EC).
> Can someone sheld some light in this direction?
In the past, under Directive 2007/46/EC, we could use either of 72/245/EC
(2004/10
Hello Niels,
On Tue, 20 Jan 2015 08:39:45 +0100,
Niels Hougaard wrote:
> Product in question is an ISM equipment. Classified according to EN
> 55011:2009/CISPR 11:2009 as class A, group 1 equipment. Using RF energy for
> a kind of skin treatment, with a probe at the end of a 1-1,5 m long cable
On Thu, 23 Oct 2014 20:40:14 +,
"Crane, Lauren" wrote:
> I am doing a deep dive into ISM equipment requirements for the first time. I
> *think* I see a difference in interpretation of ISM equipment between the US
> and EU regulations.
>
> US (FCC Part 18) seems to limit the ISM concept t
On Wed, 3 Sep 2014 23:31:27 -0700,
Scott Douglas wrote:
> Now, my old brain thinks the above is not acceptable and that the FCC
> says that anything special needed to pass FCC testing must be provided
> with the product. And I am thinking that ferrites are special as you
> can't get them at Wal
On Wed, 27 Aug 2014 19:20:03 +0900,
"T.Sato" wrote:
> Actually I guess so, but couldn't find the fact and the rationale.
> I also sent an inquiry about this to FCC, but had no response at
> this time.
Now, I had response from FCC OET.
Inquiry:
These days, internal-
On Wed, 27 Aug 2014 00:26:23 +,
Ted Eckert wrote:
> The FCC is generally not concerned with unintentional emissions from
> construction machinery. The general assumption is that a susceptible
> receiver would not be operating in close proximity to the
> construction equipment. It may no lon
Dear experts,
In USA, are there any regulatory EMC requirements for construction machinery
(heavy machinery in general) such as crane, backhoe, etc.?
For FCC, 47 CFR 15.103(a) says that digital devices utilized exclusively in
transportation vehicle are exempted, but FCC OET says "The exemption
ssion limits in ECE Regulation No. 10 Rev.4 are
identical with those of 2004/104/EC.
http://www.unece.org/trans/main/wp29/wp29regs1-20.html
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> -Oorspronkelijk bericht-
> Van: T.Sato [mailto:vef00...@nifty.ne.jp]
>
On Wed, 11 Jun 2014 13:18:15 +0100,
"McCallum, Andy" wrote:
> But the difference is only 2dB - I don't see the point.
Sorry, I forgot of thinking of vehicle limits in 2004/104/EC.
For the 2004/104/EC vehicle narrow band limits which is 2 dB lower
than that of EN 55012, the latter requires tha
On Wed, 11 Jun 2014 12:28:44 +0100,
"McCallum, Andy" wrote:
> Can anyone explain the difference in the limits between the directive and EN
> 55012.
EN 55012 is intended to protect off-board receivers, and 2004/104/EC
(and ECE R10, CISPR 25, and OEM standards) are intended to protect
on-board
e can help improve this test
program, expecially those test patterns.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> On 4/5/2014 1:51 AM, T.Sato wrote:
>> Hello,
>>
>> We used to use scrolling-Hs test pattern for CISPR 22 and ANSI C63.4,
>&
On Fri, 06 Jun 2014 23:20:06 +0800,
Scott Xe wrote:
> Thanks! What is the major impact on own brand labelers?
NLF directives such as 2014/30/EU defines "manufacturer" as
"any natural or legal person who manufactures apparatus or
**has apparatus designed or manufactured, and markets that appar
On Fri, 6 Jun 2014 00:49:58 +0800,
Scott Xe wrote:
> Is there any reason behind to have LVD, EMC and R&TTE directives updated in
> similar time?
To align them with NLF, all the new approach directives which were
not aligned with NLF were/will be updated even if no other changes
were necessary.
On Thu, 24 Apr 2014 16:15:25 +0100,
John Woodgate wrote:
> In message <000f01cf5fa6$acd40660$067c1320$@westin-emission.no>, dated
> Thu, 24 Apr 2014, Amund Westin writes:
>
>>Distributors ... do we talk about stores as Kmart, Walmart, etc.?
>
> Not really, they are retailers: Digikey and Mou
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> -Original Message-
> From: T.Sato [mailto:vef00...@nifty.ne.jp]
> Sent: 05 April 2014 08:51
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: [PSES] CISPR 32, colour bar with moving element
>
> Hello,
>
> We us
Hello,
We used to use scrolling-Hs test pattern for CISPR 22 and ANSI C63.4,
but CISPR 32 requires ITU-R BT.1729 colour bar with small moving element
for computer displays and similar devices.
Now, I made web pages which will display the test pattern on web browsers.
If you are interested, pleas
On Fri, 28 Mar 2014 14:42:52 +,
"Sundstrom, Mike" wrote:
> I've been asked to find a supply that can provide the closed cell foam
> material used in a EMC setup as a table for OATS or inside a chamber.
>
> Does anyone have any contacts?
ETS Lindgren, and possibly some other manufacturers
On Tue, 11 Mar 2014 11:33:43 +,
Julian Jones wrote:
> We have a rather convoluted way to load the ethernet lines to meet EN55022.
> Sec 9.6.3.
>
> I've looked on Google and found a few ping and data copy programmes, but I
> can't find a single program to do it all.
>
> I am hoping some
On Mon, 28 Oct 2013 15:38:24 +,
"McBurney, Ian [Allen & Heath UK]" wrote:
> Can anyone give me some advice regarding EMC regulatory requirements for
> commercial products in Japan. Are there any mandatory requirements?
> Is there a government organisation that issues proclamations regardin
On Tue, 17 Sep 2013 15:52:05 +,
Bill Stumpf wrote:
> The FCC will accept testing using ANSI C63.4:2009 also. See FCC DA-09-2478.
And ICES-003 Issue 5 may still accept ANSI C63.4-2003, too.
See footnote 2, which says "Until further notice the use of ANSI C63.4-2003
is permitted in lieu of
On Wed, 28 Aug 2013 15:44:35 +,
"Ian White (SXS UK)" wrote:
> If you have a control panel which has relays and various other control gear
> on, all mounted on a Din rail type construction this all comes under the LVD
> and EMC Directives.
>
> If you then include a DIN rail mounted 3G Mod
Grace,
On Fri, 23 Aug 2013 09:03:35 -0400,
Grace Lin wrote:
> Could you please share your experience and/or knowledge for the ground
> plane grounding in the immunity lab?
>
> We plan to layout a L shape ground plane in the 24' x 18' area for ESD,
> etc. tests. The corner of the L shape is r
On Tue, 23 Jul 2013 06:57:09 -0400,
Grace Lin wrote:
> FYI. Our agent in Asia informs us there is no regulatory statement
> required for 2.4 GHz devices.
I think many manufacturers respect the requirements of ARIB STD-T66
for 2.4GHz radio devices such as WiFi, although it is not the mandatory
On Mon, 22 Jul 2013 07:15:36 -0400,
Grace Lin wrote:
> Is there any regulatory statement need to be included in the manual per
> Japan MIC for wireless products?
You may need to check the applicable ARIB standards, too.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
On Tue, 18 Jun 2013 07:02:58 +0100,
John Woodgate wrote:
> In message <20130618.073854.236474654.vef00...@nifty.ne.jp>, dated
> Tue, 18 Jun 2013, T. Sato writes:
>
>>The waveform is probably one of the "fast damped oscillatory waves"
>>specified in IEC 61000-4-18, which simulate oscillatory w
David,
On Mon, 17 Jun 2013 12:46:06 -0700 (PDT),
David wrote:
> We have a customer with a requirement I haven't seen before. Doing a
> magnetic field test with a damped sine, at 10 MHz. I'm at a loss for what to
> do. The generator we have does 100 kHz and 1 MHz, but not 10 MHz. Do they
On Tue, 11 Jun 2013 10:14:57 -0700 (PDT),
Bill Owsley wrote:
> electrically conductive and thermally insulative material to use as a gasket.
Nothing is perfect, so I think you need to specify how high electrical
conductivity and how low thermal conductivity the material should have.
If you si
d the translation
and neither couldn't find a translator, maybe I can manage to translate
the required part of the document for you but, sorry, with a considerable
fee.
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
> On Jun 3, 2013, at 3:21 PM, "T.Sato"
On Mon, 3 Jun 2013 09:15:53 -0700,
Peter Merguerian wrote:
> Hi, does anyone know where I can purchase METI Ordinance 1?
Can you explain what is the "METI Ordinance 1"?
Regards,
Tom
--
Tomonori Sato
URL: http://homepage3.nifty.com/tsato/
-
---
On Fri, 24 May 2013 17:24:35 +0100,
John Woodgate wrote:
> It's known that this clause is inadequate and it will be reviewed, but
> probably not very swiftly. It has been pointed out that the
> capacitance between the EUT and the ground plane depends on the
> permittivity of the support, which
Colleagues,
Maybe a slightly silly question, but I want to hear your opinions.
IEC 61000-4-4:2012 clause 7.3.1 says:
Floor standing EUTs ... shall be placed on a ground reference
plane and shall be insulated from it by an insulating support
with a thickness of (0,1 +/- 0,05) m including no
On Wed, 1 May 2013 11:12:30 -0700 (PDT),
Dave Wilson wrote:
> Is anyone aware of a manufacturer of a suitable coupler for testing
> GigE ports to the Low Frequency Conducted Immunity standard IEC
> 61000-4-16?
I don't know of 61000-4-16 coupling network for 1000Base-T, but I think
maybe some o
On Wed, 10 Apr 2013 23:00:27 +,
"Crane, Lauren" wrote:
> I am looking for advice on how to determine the EU RTTE class of a product.
>
> The product has a base station and a sensor. The battery powered sensor can
> be taken out of the base station and used elsewhere to do its sensing thin
On Thu, 28 Mar 2013 08:30:43 -0400,
Grace Lin wrote:
> Could you please share your suggestions/comments to connect the
> above-referenced LISN (
> http://www.rohde-schwarz.com/en/product/env216-productstartpage_63493-9775.html)
> to reference ground in a semi-anechoic chamber (mainly for radiat
On Fri, 8 Mar 2013 14:10:02 +,
John Woodgate wrote:
>>Please give me your experts comments.
>
> 7.2 of IEC/EN 61000-4-5 says (among other things):
>
> If there are no other possible connections to earth, line-to-ground
> tests may be omitted.
I think maybe the paragraph can cause some co
On Fri, 16 Nov 2012 10:20:42 -0500,
Doug Nix wrote:
> Can anyone point me towards the Japanese industrial machinery standards for
> safety and electrical requirements? I know of JIS, but am not familiar with
> them in any kind of detail.
>
> The equipment is a robotic paint booth applicatio
On Thu, 20 Sep 2012 16:35:52 +0200,
Kim Boll Jensen wrote:
> I remember to have seen an official definition of how to define the length
> of a coiled cable. This is very interesting when testing EMC burst on cables
> over 3 meter. When is a coiled cable 3 meter?
>
> Especially I need a definit
On Wed, 19 Sep 2012 12:40:30 +,
Charlie Blackham wrote:
> Quoting from the Guide for the EMC Directive 2004/108/EC, available from
> http://ec.europa.eu/enterprise/sectors/electrical/documents/emc/guidance/index_en.htm
>
> 1.2.6 Products for own use
> Where an apparatus is manufactured fo
On Wed, 12 Sep 2012 11:49:20 -0500,
rehel...@mmm.com wrote:
> Are TCF type reports allowed in Australia?
For C-Tick, Yes, I think.
Take a look at:
Radiocommunications Labelling (Electromagnetic Compatibility) Notice
http://www.comlaw.gov.au/Series/F2008L00262
Electromagnetic compatibil
On Fri, 1 Jun 2012 17:05:22 -0400,
Larry Stillings wrote:
> What is the defined sequence of test voltages when performing testing to EN
> 61000-4-5 per a family standard that says use the procedure in EN 61000-4-5.
>
> For example when doing a 2 kV Lines to Earth, 1 kV Line to Line test on AC
On Wed, 4 Apr 2012 08:19:59 +0200,
Niels Hougaard wrote:
> This gives the need for reading the ARIB STD-19 standard or having it
> explained. Until now I have only been able to find it in Japanese; maybe it
> does not exist in an English version.
AFAIK, ARIB STD-19 is available only in Japanes
On Tue, 7 Feb 2012 08:34:47 +,
John Woodgate wrote:
> >It seems IEC 61000-4-4:2004 (ed.2) clause 7.3.1.1 is clear on this:
> >"The test voltage shall be applied simultaneously between a ground
> >reference plane and all of the power supply terminals, a.c. or d.c.,
> >and the protective o
On Sun, 5 Feb 2012 08:15:54 -0800 (PST),
Wendy Nya wrote:
> I checked several standards but they do not seem to dictate the
> coupling paths to test. The equipment that we have, has all seven
> coupling paths for single-phase power port: L-GND, N-GND, PE-GND,
> LN-GND, LPE-GND, NPE-GND, LNPE-GN
On Thu, 12 Jan 2012 15:09:13 -0500,
Grace Lin wrote:
> I have a contractor performing NSA today. When the center of the biconical
> antenna is located right at the 2 meter peripheral, NSA doesn't meet the 4
> dB requirements. In order to meet the 4 dB requirement, the antenna must
> be moved
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