Re: [PSES] ISO 7637-3 (automotive)

I Concur, I’ve only been asked to do this test by a manufacturer. Sincerely, Derek. > On Feb 2, 2021, at 10:14 AM, David Schaefer > <12867effceb4-dmarc-requ...@listserv.ieee.org> wrote: > > HI James, > > In my experience ISO 7637-3 is only required by manufacturer specifications – >

[PSES] e-mark

equipment we plan to certify. I would appreciate any guidance on the legal side of e-mark testing needed by a test lab outside of Europe. Thanks, Derek Walton SSCLabs Reno, NV, USA - This message is from the IEEE Product Safety

Re: [PSES] [PSES] Thoughts on what may be the emission source

Westin > Sent: 28 November 2020 09:43 > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: [PSES] SV: [PSES] Thoughts on what may be the emission source > > Derek, > > 240/480MHz sound like USB 2.0 High speed It's 4 USB-ports on the RPi ? > > Br > Amund > > &g

[PSES] Thoughts on what may be the emission source

Hi Folks, I’m working on a product containing a Raspberry PI as the main controller. I see two very strong emissions at about 240 MHz and 480 MHz. They are obviously related. I’ve discounted video, but not having any details on the board it’s making it hard to pin down the source. Anybody

Re: [PSES] Anybody particularly adept at TESEQ Compliance5 Software?

Well, I used to install it, what’s up? Derek. Sent from my iPad Pro On May 5, 2020, at 3:56 PM, Mike Violette, P.E. wrote:  Michael Violette, P.E. Director American Certification Body mi...@wll.com +1 240-401-1388 - This

[PSES] Induction motor EMC

HI folks, I’ve been asked if there are any EMC requirements on induction motors. Personally I’ve had mixed experience with these, orientation has proved important to not making any emissions. My gut feel is that they should be inherently quiet and also immune, but is there anything formal in

[PSES] Apple charger load

HI folks, I have been asked to test an Apple iPad charger for RE102. I would rather not have a real iPad, but would like to have a dummy load. Can anyone tell me if there is something like that already out there please. Just adding resistors isn’t adequate I think because some smart

[PSES] Personal field meter

want to reply to the group. Thanks, Derek Walton SSCLabs.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to All emc-pstc postings

Re: [PSES] ESD - Floating metal knob, otherwise grounded equipment

Oh Boy Elliott, you’ll get a few answers here, lol. My 10 cents is that when you are not discharging each time you are adding more and more charge to the isolated control, that eventually will snap over At that point you are discharging quite a significantly higher level of chart than an

Re: [PSES] FCC regulatory statements

Hi Folks, just a quick comment on the LED lights. ANSI has been working hard ( there are some tricky issues ) to issue C63.29 which will help eliminate a lot of LED lighting issues. If anyone is curious, I can direct them to the appropriate committee contact point to learn whats going on.

Re: [PSES] Any Different Results in ESD Testing when Changing Brands of ESD Simulator (IEC 61000-4-2)

Hi All, Well, this seems like here we go again. Not you Doug, just to be clear. I have long since had a problem with the standards world where they focus on a “test” rather than addressing the REAL PROBLEM. I’ll give $100 right now to the three people who can shuffle the carpet, discharge

[PSES] JDQ 202 Specification.

Hi All, I’m Running an ISO 7637-2 Pulse 2b test, but in accordance with Section 21 of JDQ202. There are a few differences, and one that’s perplexing me is the term Pulse cycle time in the JDQ document. Pulse 2b is rather a long pulse lasting about 2 1/2 seconds. It is simulating some of the

Re: [PSES] Question re: Measuring a signal in a noisy environment

deficiencies until an auditor or a knowledgeable person speaks up. > > You'll probably put me on the same side as Ken and Ghery. > But that's okay, I'll be glad to be there. > > Manny Barron > > > > > From: DEREK WALTON [mailto:00734758d943-dmarc-requ.

Re: [PSES] Question re: Measuring a signal in a noisy environment

quipment into the test chamber. > > It would appear that the selected test lab was just not ready for prime time. > > > Ed Price > WB6WSN > Chula Vista, CA USA > > From: DEREK WALTON [mailto:00734758d943-dmarc-requ...@listserv.ieee.org > <mailto:007347

Re: [PSES] Question re: Measuring a signal in a noisy environment

Interesting discussion, not surprising I have a little empathy, and a whole slew of disagreement with both Ken and Ghery ( both Chaps I have a lot of respect for ) on this one. How best to respond is the question? Cheers, Derek Walton. > On Apr 17, 2019, at 1:12 PM, Bill Stumpf wr

[PSES] Sheet resistor material

Hi All, I’m looking for a source for Sheet resistor material. So far my internet searching has pulled up nothing, can anyone give me some pointers? Thanks, Derek. - This message is from the IEEE Product Safety Engineering

Re: [PSES] Testing a product with that uses a solar panel

Hi All, I totally agree with Ken, folks are totally trying to over think this. Just shine incandescents so the inventor can run. The panel will not generate any noise. Cheers, Derek Walton. > On Feb 14, 2019, at 8:41 PM, Ken Javor wrote: > > OK, but why? It’s an EMI test, n

[PSES] KDB 896810

Good day folks, does anyone have a copy of this KDB they can forward please. I made the mistake of relying on the US government to host the information. Thanks, Derek. - This message is from the IEEE Product Safety Engineering

Re: [PSES] IEC 61000-4-5 Surge Testing Single plug vs. multiple plug system

. Cheers, Derek Walton LF Research/SSCLabs. Reno, NV. Sent from my iPad Pro On Jan 2, 2019, at 11:13 PM, John Woodgate wrote: I feel sure that "When testing line to ground, the lines are tested singly in sequence, if there is no other specification." is about 3-phase supplies, no

Re: [PSES] EN61000-4-6 adapters

g the 'reference calibrations' > and they are always on top of the reference plane. > > (P.S. I looked to the pictures of the 2013 version of the standard) > > Greetings, > Bart > > -Oorspronkelijk bericht- > Van: DEREK WALTON <00734758d943-dmarc-requ...@ieee.org>

[PSES] EN61000-4-6 adapters

Good day folks, I’m re-educating myself on EN61000-4-6 and looking at the section discussing 150 Ohm to 50 Ohm adaptors I am curious why the series 100 Ohm resistor is added on the “Outside” of the reference plane for the EM Clamp and on the “Inside” of the reference plane for the CDN. For

Re: [PSES] NSG600 Manual

es www.woodjohn.uk <http://www.woodjohn.uk/> > Rayleigh, Essex UK > On 2018-12-27 21:22, DEREK WALTON wrote: >> Good day folks, >> >> I was wondering if anyone has the user manual for the NSG600. I’ve tried >> Teseq/Schaffner but most people

[PSES] NSG600 Manual

Fischer connectors and I’m trying to figure the way it was intended to connect. Anyone throw any light on this? Thanks and Happy New Year! Cheers, Derek Walton. L F Research. - This message is from the IEEE Product Safety Engineering

[PSES] Testing comparison

of a summary of changes between each version? Otherwise I see myself going through each standard one at a time: a laborious prospect now the weathers turned nice. I live in hope, Thank you, Derek Walton L F Research - This message

Re: [PSES] Testing comparison

, 2014 11:05 am Subject: Re: [PSES] Testing comparison In message 8d1470feaef395d-2584-1c...@webmailstg-vd01.sysops.aol.com, dated Mon, 26 May 2014, Derek Walton 00734758d943-dmarc-requ...@ieee.org writes: I'm trying to a gap analysis for Testing done in 1999 to what they should be complying

Re: [PSES] Higher EMI from ASIC built with new process

Hi Ravinder, James's comment made me wonder about a statement you made about rise times being the same. Are you sure what you are seeing isn't the limit of your measuring technique? A broader noise spectrum may be due to a faster rise time that you are not seeing in the time domain. I too

Re: [PSES] common charger for radio equipment

connector. How about eliminating sales taxes on one or two power supply styles, lets see how the market reacts. I'm dammed if I want governments making choices for me! More like 25 cents worth. Derek Walton -Original Message- From: ce-test, qualified testing bv - Gert Gremmen g.grem

Re: [PSES] Schaffer surge generator

Hi Cortland, and anyone else who gets in this position. First, an assessor cannot stop you using anything. The role of an assessor is eyes and ears in a lab, not a prefect. If an assessor thinks you are doing something wrong, or not complying, then he/she MUST write a deficiency. To do so,

Re: [PSES] Schaffer surge generator

Do you need an Accredited Calibration, or just NIST traceable? Cheers, Derek. -Original Message- From: Pat Lawler plawl...@gmail.com To: EMC-PSTC EMC-PSTC@LISTSERV.IEEE.ORG Sent: Mon, Mar 3, 2014 12:20 pm Subject: [PSES] Schaffer surge generator All, I need to calibrate our

[PSES] RF test cables

, mainly one is used below a GHz, the other could be used up to 40 GHz. I'd be grateful for folks that share there positive and negative experiences with different types and suppliers. Off list might be best, thanks. Sincerely, Derek Walton L F Research

Re: [PSES] Aircraft Electronics ATP

to confidently use it. At the other extreme, a seller may test the heck out of something, although the buyer couldn’t care less, so long as it’s cheap. Ed Price WB6WSN Chula Vista, CA USA 1961 Amphicar 770 2001 Fleetwood Storm 31W 2008 Ford Explorer From: Derek Walton [mailto:lfresea...@aol.com

[PSES] Aircraft Electronics ATP

Thanks in advance, Derek Walton L F Research - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings

[PSES] EMC Puzzle update

First off, many thanks to all who replied on and off list. Most of the replies we had already addressed, but here is an update. To re-cap, we had a sealed metal box with just a power cord, and that power cord had feed through type caps. In theory this should not radiate. To save the agony

Re: [PSES] EMC Puzzle update

) understanding is that it is better to have all ground planes connected together to provide a good quality RF return path and minimise the chance of traces crossing plane splits. Many thanks James From: Derek Walton [mailto:lfresea...@aol.com] Sent: 19 December 2013 16:24 To: EMC-PSTC

[PSES] AR5000LP

Hi Folks, I'm trying to locate one of these discontinued amplifiers. If anyone has one and would like to sell/rent, or knows where I can get one, can they please contact me off list. Thanks, Derek Walton - This message

[PSES] Michael Taylor

Hi All, I'm trying to find an email for Michael Taylor who used to be with Hach in Colorado. Can anyone send me his address preferably off-line. Thanks, Derek Walton L F Research - This message is from the IEEE Product

Re: [PSES] Standards copyright lawsuit

Doug has a point, the laws are available, and we can get access for free. The problem is we spend our lives trying to find which laws we have to comply with, then more than likely have lawyers try to agree what they really meant when it was written! Time we reduced the number of laws

Re: [PSES] EFT Generator series inductance

. In the real world, the wires leading from the power source to your power supply will have significant inductance, and you need to be able to function with that by making short term energy needs are available inside the power supply. Next opinion please :-) Derek Walton L F Research

Re: [PSES] AF ripple in DO-160

@LISTSERV.IEEE.ORG Sent: Mon, Sep 9, 2013 11:57 pm Subject: Re: [PSES] AF ripple in DO-160 Derek, Check out section 16.7 control on current ripple ac/dc, power factor, harmonic current. Ken Javor Phone: (256) 650-5261 From: Derek Walton lfresea...@aol.com Reply-To: Derek Walton lfresea

[PSES] SAE document

HI All, does anyone know where I can get AIR6219 The SAE site says not available for purchase right now. Sincerely, Derek. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To

[PSES] AF ripple in DO-160

be most welcome. Sincerely, Derek Walton L F Research EMC facility. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p

[PSES] SEU

Hi folks. I'm faced with helping a company meet Single Event Upset requirements for aircraft. But our requirements are simply we should meet them Can anyone point me to how we can show compliance Thanks Derek Walton L f research Sent from my iPhone

Re: [PSES] EMC Required?

HI Scott, I'd like to reinforce what Don has said. I flew to Scotland in the early days of CE with a product that should have aced emissions and we were worried about susceptibility. It failed emissions and passed susceptibility. The 3 transistor circuit was singing away around 70 MHz. I'm

[PSES] High pulsed fields

. Quantifiable suggestions are most welcome. Thanks, Derek Walton NCE #438 12790 Route 76 Poplar Grove, IL 61065, USA W: 1 815 986 6685 M: 1 815 566 5655 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion

[PSES] Category of equipment in an Aircraft Cockpit

to ensure we don't over spec, and therefore over design our box Replies on or off list are most welcome. Thanks Derek Walton L F Research - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list

Re: [PSES] RFI on chamber vendors

Curt. I suggest Peggy Gerard of panashield. Not only the owner but exceptionally helpful too. Cheers Derek Sent from my iPhone On Jun 3, 2013, at 4:15 PM, Curt McNamara mcnam...@umn.edu wrote: A customer I work with is asking about EMC chambers for investigation/debug of unintentional

Re: [PSES] Critical component in EMC report

Whoa Anthony, back up a little. Test reports can contain what the heck a lab likes, as long as interpretations are indicated as such. These words extracted from ISO 17025, the most common test document: Clause 5.10 covers reporting the results: Clause 5.10.1 The results shall be reported,

[PSES] Boeing D6 16050-6

Hi Folks, can anyone tell me a source for this document please? Thanks, Derek. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to

Re: [PSES] Surge Test Power Supply Class 2 acc. EN61000-4-5

Well folks. I disagree. Here's why. If the power supply is used in an application were the output is referenced to ground , you will not be stressing the primary to secondary circuits. If your power supply isn't man enough for this you should place warnings in your literature BEFORE purchase is

[PSES] Telescopes

Hi all, can anyone tell me if there is a product standard yet for professional telescopes. What might that come under? Looking around the CEN site I don't see anything. Thanks, Derek Walton - This message is from the IEEE

Re: [PSES] user's group ??

Yes, there is a linked in Teseq Compliance 5 users group -Original Message- From: Conway, Patrick pcon...@ball.com To: EMC-PSTC EMC-PSTC@LISTSERV.IEEE.ORG Sent: Fri, Jan 11, 2013 3:12 pm Subject: user's group ?? We are considering new automation tools for some of our MIL-STD-461 and

[PSES] iPhone 5 TxRx frequencies on 4g

HI folks, can anyone tell me what transmit and receive frequencies my iPhone 5 uses here on the US 4G network please. Thanks, Derek. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.

Re: [PSES] iPhone 5 TxRx frequencies on 4g

. Most likely it would be the frequencies certified under FCC Part 27 of the rules which are numerous. Larry From: Derek Walton [mailto:lfresea...@aol.com] Sent: Sunday, January 06, 2013 12:14 PM To: emc-p...@ieee.org Subject: iPhone 5 TxRx frequencies on 4g HI folks, can anyone

Re: [PSES] Quasi-peak detector

Sure this isn't power over Ethernet power supply? Sent from my iPad On Nov 27, 2012, at 14:55, Ken Javor ken.ja...@emccompliance.com wrote: Performing troubleshoot testing to CISPR type radiated emissions requirements without a quasi-peak detector. Seeing results of bus traffic on an

Re: [PSES] Fischer CC EM Clamp F-203I-32mm

appropriate to enforce. Shall Vs should, may, could etc. My 10 cents worth. Derek Walton L F Research. -Original Message- From: Wendy Nya wendy...@yahoo.com To: Cortland Richmond k...@earthlink.net; EMC- PSTC emc-pstc@LISTSERV.IEEE.ORG Sent: Wed, Nov 21, 2012 1:25 am Subject: Re

[PSES] Shielding materials

. Cheers, Derek Walton L F Research - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived

[PSES] Light curtains

specifically regarding what the machine should do if the light curtain is activated by a hand etc. Is terminating power to anything making movement happen sufficient? I hope this is not off the list topic list. Thanks, Derek Walton L F Research

Re: [PSES] Calling all old-timers

Perhaps. To help isolation It has several sections. Only the output end has lower power parts Derek Sent from my iPhone On Sep 27, 2012, at 6:12 PM, don_borow...@selinc.com wrote: While the schematic may be a pi or T network, internally it may be a series of pi or T networks, each

[PSES] High input impedance high voltage Voltmeter

Hi Folks, I'm looking for options, besides BRANDENBURG, for a voltmeter to measure ESD tip voltage. Anyone care to share their experiences? Off list response is fine. Thanks, Derek Walton EMC Lab Services. - This message

Re: [PSES] Capacitor rating for mains useage

HI Ken, you don't say how small and it's relative you know :-) Any cap I suggest for across the line use I strongly recommend it has an X rating, a Y rating if it goes between power and earth. Is this what you were meaning? Cheers, Derek. -Original Message- From: Ken Javor

[PSES] EN 61000-4-5

Hi folks, I'm trying to determine the maximum current that a TVS can cope with for the EN 61000-4-5 pulse. Very few data sheets provide this and calculating it is not possible because device construction enters the equation. Does anyone have any data on TVS current ability during the surge?

Re: [PSES] EN 61000-4-5

. -Original Message- From: Joe Randolph j...@randolph-telecom.com To: Derek Walton lfresea...@aol.com; emc-pstc emc-p...@ieee.org Sent: Wed, Aug 1, 2012 3:02 pm Subject: Re: EN 61000-4-5 Hi Derek: Are you referring to the so-called combination wave generatorthat has an open circuit voltage waveform

Re: [PSES] EN 61000-4-5

...@selinc.com To: emc-pstc emc-p...@ieee.org Cc: Derek Walton lfresea...@aol.com Sent: Wed, Aug 1, 2012 3:29 pm Subject: Re: EN 61000-4-5 If there is any sort of pulse rating of the device, the general rule of physics is that you can safely scale the power dissipation rating during the pulse by 1/sqrt(time

Re: [PSES] EN 61000-4-5

Hi Fred, I think you are over reacting here a little, I don't believe anyone is saying a TVS is a current regulator. The TVS I'm specifically dealing with is essentially a back to back Zener diode with the Die optimized for heat removal between two large electrodes. You are incorrect

[PSES] EMC Plan

Hi Folks, I'm trying to remember the requirements for an EMC plan from the Directive. Is there a formal discussion of this document anywhere? Thanks, Derek Walton - This message is from the IEEE Product Safety Engineering

[PSES] Microwave book

itself. Know anybody that might be able to lay their hands on a copy of this for me? Cheers, Derek Walton L F Research - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post

Re: [PSES] database

Hi Jim, I back what Ken says. But, for those of us that use real computers, MAC's, you may want to consider filemaker. http://www.filemaker.com/ Sincerely, Derek. -Original Message- From: Ken Wyatt k...@emc-seminars.com To: Goedderz, Jim jgoedd...@tycoint.com Cc: EMC-PSTC

[PSES] EN61000-4-8

but in this case they shall have at least 0.65 mm minimum thickness. So, does this mean that magnetic metals can be used if they are over 0.65 mm? Presumably then the concern is saturation of very thin sheets? Sincerely, Derek Walton L F Research

Re: [PSES] EN61000-4-8

: EN61000-4-8 In message 8cf1146b86de5cb-1a0c-d...@webmail-stg-d14.sysops.aol.com, dated Tue, 5 Jun 2012, Derek Walton lfresea...@aol.com writes: So, does this mean that magnetic metals can be used if they are over 0.65 mm? It's just not clear. Perhaps someone who was involved in writing

Re: [PSES] e-standard.org The cheapest standards in the world

Always one to buck the trend, I think these are reasonable prices We are ripped off by standards bodies left right and centre MHO Derek Sent from my iPhone On May 8, 2012, at 10:05 AM, McInturff, Gary gary.mcintu...@esterline.com wrote: Would appear the real pirates are at UL and BSI

Re: [PSES] e-standard.org The cheapest standards in the world

get an actor to read me the book and still magnitudes of order difference. So I always suffer sticker shock when I hunting for standards. As I understand the price supports the standards activities – which is the reason I buy from legitimate sources. Gary From: Derek Walton

Re: [PSES] e-standard.org The cheapest standards in the world

. -Original Message- From: McInturff, Gary gary.mcintu...@esterline.com To: 'Derek Walton' lfresea...@aol.com Cc: 'don.g...@alcatel-lucent.com' don.g...@alcatel-lucent.com; 'EMC-PSTC@LISTSERV.IEEE.ORG' EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tue, May 8, 2012 1:49 pm Subject: RE: [PSES] e-standard.org

Re: [PSES] e-standard.org The cheapest standards in the world

Derek Walton mentioned MilStds - the cost is front-loaded by U.S. tax dollars, and as the fed government has never been accused of having a profit motive, there is no force from the 'invisible hand' (Adam Smith) driving high standards costs. So... are we saying that standards are made

Re: [PSES] New immunity testing by the FAA in the future?

HI All, I've watched may people speculate about PED's and what they MAY do, so I decided to go in the lab and make some measurements on my new iPad. Obviously conducted is not an option, there's no power cord. For radiated emissions to 1 GHz, the device is as quiet as a mouse. It was only a

Re: [PSES] New immunity testing by the FAA in the future?

If we set aside the aircraft interference issues, MHO is that for the take off and landing you really need folks in a state of get me the heck out of here should a problem arise, and part of that is being aware of surroundings and listening to the crew. Distracted by any means maybe not a good

Re: [PSES] New immunity testing by the FAA in the future?

Hi Chas, as a frequent flier, that take off and taxi period can be many many minutes... and has taken hours at which time a PED would be most welcome. Derek. On 3/19/2012 10:30 AM, Grasso, Charles wrote: Hello Ken - I agree with your position. Turning off edevices for a few minutes in a

Re: [PSES] New immunity testing by the FAA in the future?

side of the flight - not too bad. Best Regards Charles Grasso Compliance Engineer Echostar Communications (w) 303-706-5467 (c) 303-204-2974 (t) 3032042...@vtext.com (e) charles.gra...@echostar.com (e2) chasgra...@gmail.com -Original Message- From: Derek Walton [mailto:lfresea...@aol.com

[PSES] brush motor noise

if this is normal? In the past I have noticed brush noise get lower as brushes bed in, so this is little surprising. Would anyone care to share their thoughts please? Thanks, Derek Walton L F Research. - This message is from the IEEE Product

[PSES] Field probe battery replacement

Hi Folks, I have a couple of field probes requiring battery replacement, can anyone suggest a 3rd party replacement service please... Thanks, Derek Walton. - This message is from the IEEE Product Safety Engineering Society emc

Re: [PSES] Protect An EMI Receiver

learned the hard way, I use an 8568B for conducted emissions, and save my 8566B for radiated emissions. Suggest you get a low cost SA/receiver for making CE measurements. Happy holidays everyone. Derek Walton. On 12/27/2011 2:13 PM, doug...@gmail.com wrote: The CISPR 16, 5 uH LISN. Doug

Re: [PSES] Lab Needed for 17025 Accredited Calibration for Davis Weather Station

Hi Mac, NVLAP requires that you follow Annex B of NIST HB-150. An accredited calibration is not the only way, just the lazy way. Are you sure you need to record these parameters? If your standard has no limits, then quite possibly you could argue out of recording them. I'm not a fan of

Re: [PSES] CE marking of deep-fat fryer

Hi Doug, I guess I find this nonsense. ANYTHING abused looks dangerous. More examples of Nanny state control. Cheers, Derek. On 11/14/2011 4:13 PM, dougp01 wrote: Never heard of this in Europe, for N.A. look at this video.

Re: IEEE PSES / Costs / Explanations

Hi Jim, Thanks for this background, it helps understand where the IEEE are involved. While it sounds like some good changes have happened in how the main IEEE looks at Society's, it highlights significant effort is still required to get in line with efficient operating. At the EMC show I'll

Re: New Product Proposal

, Derek Walton. Ted Eckert wrote: This list is to address regulations regarding EMC and product safety. I agree with Lee that the topic is straying too far from the central purpose of the list. I have no objection to the free discussion of various topics. Personally, I rather be exposed

EN55022

Hi all, Can anyone advise on the implementation dates for EN55022:2006 (w/ Addendum for emission measurements 1GHz) for the EU, Taiwan, and Australia? My understanding is that enforcement will begin 4/1/2010 for VCCI and 1/1/2011 for KCC. Thank you in advance. Derek Walton, L F Research

Re: DIY Equipment and Calibration

HI Larry, was this really required, in 17025, or is your assessor/accrediting body asking? If you are following a standard calibration method, I'm not sure you are REQUIRED for have a procedure. That said,I believe strongly in writing detailed work instructions ( what we call them),

Re: Mobile Phones in EMC Labs

not advocating the used of a particular brand, just good cables. The power to the four modules is passed through a Xantrex super isolation transformer also: just cos'. Seasons greetings, Derek Walton L F Research Pettit, Ghery wrote: I would. Shielding of receivers isn’t perfect. We have signs

Re: Cables On The Floor

HI Ed, you should know that managers are full of hot air,and are therefore lighter than engineers and techs Derek PS, folks, this was meant as a joke... Price, Edward wrote: *From:*

Solar Coupling probes

Good morning all, I was wondering if anyone had experience with using Solars 9616-1 and 9616-2 coupling probes. Maybe of line responses would be best, they certainly would be appreciated. Thanks in advance, Derek Walton - This message is from the IEEE Product Safety Engineering Society emc

Re: GIFS on the EMC-PSTC list

would be good. Redirecting to somewhere else is, in my opinion, not good Regardless, love the list and it's members! Derek Walton L F Research. Peter Tarver wrote: I oppose posts in anything other than plain text. The expansion to html formatted posts has already led to odd font usage

EN 13309:2009

Good day folks, I've been asked to quote testing to EN 13309:2009, but I cant find record of it in my usual places ( BSi ) Can anyone point me where I can get a copy, or a draft version please. Thanks, Derek Walton L F Research - This message is from the IEEE Product Safety Engineering

Re: EN 13309:2009

Hi Everyone, thank you for the valuable insight Alas, since I have to work, I cant be on all committees But now I have a start at least! Sincerely, Derek Walton John Woodgate wrote: In message 4900d68f.2090...@aol.com, dated Thu, 23 Oct 2008, Derek Walton lfresea...@aol.com

Re: Class A antenna distance

acceptable... Best regards, Derek Walton L F Research Bill Stumpf wrote: Both answers are correct, but also the term Fully Anechoic Chamber raises a flag. The FCC does not allow the use of fully anechoic chambers for emissions testing (30MHz - 1000MHz). Reference ANSI C63.4(2003) Section 5

Re: Seeking labs to test to EN55020

Hi Pat, Yes, NVLAP is under NIST. A good contact there is Brad Moore. Brad Moore brad.mo...@nist.gov Cheers, Derek Walton L F Research pat.law...@slpower.com wrote: Hi John, The link you gave doesn't give you the NVLAP web site, but just a domain name holder. NVLAP appears

Re: Another Cancer Scare?

not sure yet how much of that is public domain. Again, I stress this comes from an aging guy... I may be remembering incorrectly, or understood the explanation wrong. We live in interesting times. Cheers, Derek Walton L F Research Lothar Schmidt wrote: Just for clarification, Cell phones

Re: Another Cancer Scare?

statements. Derek Walton wrote: Part of the reproduction process is un-encoding the cell structure from the DNA, and that is influenced by fields which if great enough cause non intended cell structure. Usually the fields are magnetic because they penetrate deeper into skin tissue

Another Cancer Scare?

Does anyone know more about the research spoken about in the BBC news artical? http://news.bbc.co.uk/2/hi/health/7523109.stm Is it really new unpublisged research or just rehashing the old? Sincerely, Derek Walton L F Research - This message is from the IEEE Product Safety Engineering

Re: Low Loss Coax Cable

, the cable will only be a few feet long. Using all horns for transmitting, I've not observed significant influence of the racks located behind the antenna. Sincerely, Derek Walton L F Research Kunde, Brian wrote: How would you rank the flexibility of the following cables? (so I an get a comparison

Re: Low Loss Coax Cable

HI Brian, I use Times Radio LMR-400-PVC I believe it is: it's usable to 12 GHz or so. I have also used Sucoflex cables to go to 18 GHz. Sincerely Derek. Ken Javor wrote: Instead of looking for that long piece of flexible low-loss cable, why not procure a very short length of low-loss

DO160E Cat Y testing

Can anyone forward the names and/or costs of doing DO160E CatY Radiated testing lease. I'm trying to collect budgetary numbers and facilities for a proposal. Perhaps an off line reply would be best. Thanks, Derek Walton L F Research - This message is from the IEEE Product Safety

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