Re: [PSES] 50Hz Product and the EMC Directive

2023-09-27 Thread Chas Grasso
Isn't this one of the product compliance conditions that a Notified Body can issue a judgement? They *should* cast in your favor. On Wed, Sep 27, 2023 at 7:35 AM Scott Douglas wrote: > * This message originated outside of DISH and was sent by: > sdouglas...@gmail.com * > ---

Re: [PSES] Proceedings and Papers from EMC Symposium 2023

2023-08-30 Thread Chas Grasso
; Jim > > > On August 29, 2023 4:22:27 PM Chas Grasso wrote: > >> Hello, >> >> I could not attend the EMC Sy,p[osium this year and now I am on the >> hunt for the papers and presentations and proceedings. Does anyone >> know where I can obtain these item

Re: [PSES] DFMEA Component Selection

2023-08-30 Thread Chas Grasso
I would argue that if you impose any requirements (such as AWG size or design of terminal block) then yes absolutely you need to have those components in the test environment.It is my impression that if your system fails for any reason that could be attributed to poor installation, then the forese

[PSES] Proceedings and Papers from EMC Symposium 2023

2023-08-29 Thread Chas Grasso
Hello, I could not attend the EMC Sy,p[osium this year and now I am on the hunt for the papers and presentations and proceedings. Does anyone know where I can obtain these items from? -- Charles Grasso Dish Technologies (c) 303-204-2974 (w) 303-706-5467 (h) 303-317-5530 (e ) charles.gra.

Re: [PSES] Friday Question - Line Cords in China

2023-08-11 Thread Chas Grasso
Hello Doug - Wow I had no idea that this issue existed. Thanks for bringing it up! As I understand that the inclusion of incorrect cords in a package spreads the incorrect conclusion that ALL of the cords are suitable for use. Did I get that right? On Fri, Aug 11, 2023 at 8:00 AM Douglas Powell

Re: [PSES] BBC news article re Li-ion batteries...

2023-08-07 Thread Chas Grasso
The flood of products using counterfeit marking from China renders our efforts virtually useless and hampers our ability to manufacture competitively. On Sat, Aug 5, 2023 at 10:02 PM Scott Xe wrote: > * This message originated outside of DISH and was sent by: > scott...@gmail.com * > --

Re: [PSES] Simulation of signal source under a pwb shield

2023-07-24 Thread Chas Grasso
roubleshooting activities for our customers’ projects. I’m contactable > between 1300h to 1730h from Monday to Friday.* > > *For inquiries, bookings, and testing updates please send us an email on > he...@unit3compliance.co.uk or call 01274 > 911747. Our lead times for testing and consultancy are ty

[PSES] Simulation of signal source under a pwb shield

2023-07-21 Thread Chas Grasso
Hello experts and gurus!! I need to simulate the performance of a BLS (board level shield) and I am considering using the IEEE Std 2716-2022 IEEE Guide for the Characterization of the Effectiveness of Printed Circuit Board Level Shielding document. This document is however an adaptation of the met

Re: [PSES] FCC Part B questions

2023-07-12 Thread Chas Grasso
il.com * > -- > what year did measurement uncertainty become a required component of lab > accreditation? > > was there massive radio interference at homes and in offices that suddenly > ceased the year after? > > asking for a friend. > > On Tue, Jul 11, 2023, 10:28 Chas Gra

Re: [PSES] FCC Part B questions

2023-07-11 Thread Chas Grasso
When the concept of measurement uncertainty came about, the company I worked for at the time decided that irrespective of the technical niceties of statistics if emission exceeded the spec but was within the stated MU, then that was still considered a FAIL. The difficulty came when the emission PAS

Re: [PSES] Fwd: [PSES] FCC Part B questions

2023-07-10 Thread Chas Grasso
I can answer the first question: A question came up that I can't answer w/o a copy of Part 47. Does the FCC report require Quasi-Peak (QP) data, or just Avg and Peak. When do peak readings trigger the need to report QP? I'm pretty sure Part 15 has AVG and QP limits listed. CHAS] The selection de

[PSES] ESD standards for testing remotes

2023-04-27 Thread Chas Grasso
Hello gurus! Does anyone know of an official standard for ESD testing remotes used for TVs /STBs etc? Thanking you in advance!! -- Charles Grasso Dish Technologies (c) 303-204-2974 (w) 303-706-5467 (h) 303-317-5530 (e ) charles.gra...@dish.com (e2) chasgra...@gmail.com - -

Re: [PSES] Safety: 60335-1 conflicting clauses question - earthing (or not) of handles

2023-04-05 Thread Chas Grasso
How exactly does one measure "likely" as in likely to touch? Is it a %age? Of course my question is tongue in cheek... On Wed, Apr 5, 2023, 4:23 AM James Pawson (U3C) wrote: > * This message originated outside of DISH and was sent by: > ja...@unit3compliance.co.uk * > --

Re: [PSES] EU and UK DoC

2023-03-06 Thread Chas Grasso
Hmmm interesting problem!! On Wed, Mar 1, 2023, 12:29 PM < 06cee064502d-dmarc-requ...@listserv.ieee.org> wrote: > * This message originated outside of DISH and was sent by: > 06cee064502d-dmarc-requ...@listserv.ieee.org > <06cee064502d-dmarc-requ...@listserv.ieee.org> * >

Re: [PSES] Resend of complete message on ESD thoughts

2023-03-06 Thread Chas Grasso
I forget. I see, and I remember. I do, and I understand. Xunzi > (340 - 245 BC) > > > On 2023-03-06 14:48, Chas Grasso wrote: > > Don't forget the seminal research done by WMKing on this topic. He was I > believe the first to measure the fast response of an ESD event through

Re: [PSES] Resend of complete message on ESD thoughts

2023-03-06 Thread Chas Grasso
Don't forget the seminal research done by WMKing on this topic. He was I believe the first to measure the fast response of an ESD event through a metal intervening object. Also, it is understood that the ESD test was a consensus output in an attempt to provide repeatability within test houses. King

Re: [PSES] Good Morning - bad breakup?

2023-01-11 Thread Chas Grasso
Thanks for the input Ken - as always!! On Wed, Jan 11, 2023, 11:24 AM Ken Javor wrote: > * This message originated outside of DISH and was sent by: > ken.ja...@emccompliance.com * > -- > A few facts for those reading who don’t know much about the EMC > certification

Re: [PSES] Good Morning - bad breakup?

2023-01-11 Thread Chas Grasso
Agreed Ghery - I mistakenly did not grandfather in when I had the opportunity and have not got the iNarte cert. I have the same experiences as you. Having said that: What I have found is that, outside of the rote testing and management of the compliance discipline, the role of the EMC Engineer is l

Re: [PSES] Test only: I have not seen any email since December 2022

2023-01-04 Thread Chas Grasso
Happy New Year !! On Wed, Jan 4, 2023 at 8:25 AM Richard Georgerian wrote: > * This message originated outside of DISH and was sent by: > richa...@mesanetworks.net * > -- > > Greetings everyone, > > > > Apologies for the email. Just testing as I have not seen any PST

Re: [PSES] Intertek message FYI: Important Update: Pending Regulatory Change to UKCA Program

2022-11-07 Thread Chas Grasso
Totally agree!! On Mon, Nov 7, 2022 at 11:14 AM Lfresearch < 00734758d943-dmarc-requ...@listserv.ieee.org> wrote: > * This message originated outside of DISH and was sent by: > 00734758d943-dmarc-requ...@listserv.ieee.org > <00734758d943-dmarc-requ...@listserv.ieee.org> * > --

Re: [PSES] Magnetic fields, human exposure standards, and pacemakers

2022-11-07 Thread Chas Grasso
Hello Dan, Dont you think that (irrespective of the warning ) the magnet on the DC cord is *much* weaker than a magnet used to penetrate through the thickness of the human body and then trigger the reed switches? My first thought is that the warning is there as a CYA? Perhaps? On Sun, Nov 6, 2022