Chas, et al, Yes, great responses; lot’s of experience out there.
To answer your recent expression of your question we need to
understand that the world is not static; people move around plus come and go.
Altho I get more that my share of ‘We have a product to ship
next week that needs CE, can you come in and do that for us’ (which has led to
some very interesting projects), most places that are working with all of this
regulatory web of issues understand that they need to meet the requirements and
expect the design teams to come up to speed on the details. This is a moving
target; how many 10s of thousands of new engineers are graduated in the world
each year and sucked up into companies and are given significant assignments
with minimal supervision and training.
This leads to one of my basic understandings as to what I do.
The collective members of the project teams are like a stew and the ‘cook’
(company leader at some level) stirs the pot regularly to make a better
outcome. This provided opportunities for us knowledgeable folks to jump in and
do handholding and informal training in all of this as part of our work on a
project. It’s usually satisfying if you like to help folks do their job well
(and they accept the help).
Because of the addition of newbies regularly and the ever
changing requirements this is a never ending cycle (and opportunity).
So, Chas, yes, the experienced folks are getting better and
better at this stuff and they have a high pass rate with the labs. They don’t
stay in one place too long if they are very good. Opportunity exists to help
the present team improve in what they do.
Anyone want to replace me so I can really retire and get back to
more fishing?
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety & Regulatory Affairs Consultant
PO Box 1067
Albany, ORe 97321-0413
503/452-1201
IEEE Life Fellow
IEEE PSES 2020 Distinguished Lecturer
<http://www.researchgate.net/Peter%20Perkins> www.researchgate.net search my
name
<mailto:[email protected]> [email protected]
Entropy ain’t what it used to be
From: Grasso, Charles [Outlook] <[email protected]>
Sent: Monday, May 24, 2021 12:07 PM
To: [email protected]
Subject: Re: [PSES] What percentage of products pass first time?
Hi all – What wonderful responses. I understand that without the proper
processes in attention that the chances of
passing first time is low indeed. One could argue that the first time passers
have such a system in place and I was interested
in how much EMC has been integrated into the product design process in recent
years!
Chas
From: Richard Nute <[email protected] <mailto:[email protected]> >
Sent: Monday, May 24, 2021 12:45 PM
To: Grasso, Charles [Outlook] <[email protected]
<mailto:[email protected]> >; [email protected]
<mailto:[email protected]>
Subject: RE: [PSES] What percentage of products pass first time?
This message originated outside of DISH and was sent by: [email protected]
<mailto:[email protected]>
Hi Charles:
Not what you asked for, but a set of principles for success with third-party
testing, from a product safety point of view:
1. The design engineer and the product safety engineer should be able to
predict the outcome of any test.
2. Testing simply confirms (or not) the prediction.
3. Failure of a test or other requirement at the third-party delays the
third-party investigation which can imperil the product schedule. To maintain
schedule, the product must comply with all tests before it is submitted to the
third-party.
4. If the product that you successfully tested fails a third-party test,
then your or the third-party test was in error. This can open a dialogue
between you and the third-party as to test process.
5. Tests to standards requirements are either pass or fail; always record
the measurement. If the test requires a stimulation, then adjust the
stimulation to the point of failure and record the measurement. Both tell you
the margin between pass and failure.
6. Provide your measurement data to the third-party when you submit the
product. If the third-party measurement data differs from your data, some
third-parties will do their own investigation as to why.
In my opinion, EMC is not a black art and can follow these same principles.
Stay safe, and best regards,
Rich
From: Grasso, Charles [Outlook] <[email protected]
<mailto:[email protected]> >
Sent: Monday, May 24, 2021 7:47 AM
To: [email protected] <mailto:[email protected]>
Subject: [PSES] What percentage of products pass first time?
Hello EMC gurus!
Calling all labs - In your experience how many products pass the Unintentional
Emissions
test first time?
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