Hi David,
We have some experience with this at my company, although not involving TNV
circuits. My company produces high voltage, high frequency power conversion
equipment mainly for the semiconductor manufacturing industry. We are
constantly challenging the voltage withstand capabilities of
Hi Jim,
Try the following link.
http://www.tsacc.ic.gc.ca/MRA/BlueGuide.pdf
My 2 Cents and not that of my current employer.
Regards,
Kaz Gawrzyjal, P. Eng.
Product Safety Engineer
--
Nortel Networks-Wireless Solutions
Wireless Development Centre
2924
Hello Jim,
Just visit the Safety Link www.safetylink.com, drop down to the Safety
Articles, FAQs, MRAs, etc subsection and the third link there, titled,
Guide to the Implementation of Directives Based On A New Approach and
Global Approach will take you to a website with this document in a
Could anyone provide any information relative to overhead catenary noise and
its affects on locomotive roof top comm systems (e.g., GPS)?
Susan Beard
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion
Barry,
The current can flow from the cap, but it will get to the IC at the wrong
time.
Regards,
George
george_t...@dell.com
-Original Message-
From: Barry Ma [mailto:barry...@altavista.com]
Sent: Tuesday, May 23, 2000 10:22 AM
To: george_t...@exchange.dell.com
Cc:
Does anyone have a link to a copy of the Blue Guide mentioned by Tony
below?
Jim Allan
Senior Compliance Engineer
Milgo Solutions Inc.
E-mail james_al...@milgo.com
-Original Message-
From: Tony Reynolds [SMTP:reyno...@pb.com]
Sent: Tuesday, May 23, 2000 10:56 AM
To:
--
From: Corinne SALINGRE [SMTP:corinne.salin...@cstelecom.com]
mailto:[SMTP:corinne.salin...@cstelecom.com]
Sent: Tuesday, May 23, 2000 1:25 PM
To: wo...@sensormatic.com mailto:wo...@sensormatic.com
Subject: Re: RTTE directive
This is a very 'touchy' discussion matter now in
George,
I am impressed by your attitude to pursue the correctness, and glad to discuss
with you further on How does a decoupling capacitor support an IC?
Here is my two cents worth. The decap supplies necessary charge to the IC
during Tr through a transmission line. As you mentioned before:
IEC60825-1 contains requirements for noncoherent infrared radiation.
Likewise does EN60825-1, with Amendment A11.
Regards,
Peter L. Tarver, PE
ptar...@nortelnetworks.com
From: Israel Yeshurun [mailto:israel_yeshu...@creoscitex.com]
Can some comment on this ?
Can Infrared
David -
You should be able to get a ballpark figure from your PCB manufacturer (need
to consider the properties of the materials you may be using in the PCB).
You could also scan the various safety standards for values, but these are
upper limits, and therefore conservative.
Regards,
Mark Gill,
Richard Woods, John Juhasz, Geoff Lister
Thank you for your responses !
Best Regards, Israel Yeshurun.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel
Hello group,
We have an emissions problem on a board and I would like to suggest a ground
plane in the area of an RJ-45 jack (TNV-1). But we have always asked our PCB
designers to leave TNV traces free of ground and power planes to avoid arcing
during surge and dialectric strength tests.
Does
I don't recall reading anything in the directive that indicates the DoC must
be in multiple languages. If you know otherwise, please specify the section
number.
Richard Woods
--
From: jim_bac...@mail.monarch.com
[SMTP:jim_bac...@mail.monarch.com]
Sent: Tuesday,
I had forwarded this to Vic upon receiving his request last week, but
viewing some on the responses that I have seen, I feel it would be
appropriate to put it out for general viewing.
Look at 47 CFR
§ 2.803 Marketing of radio frequency devices prior to equipment
authorization.
(a) Except as
Kim,
According to the information I have on the RTTE Directive (99/5/EC)
the following applies to the Declaration of Conformity.
'There is ONE Declaration of Conformity. It is held by the
manufacturer with the technical file for the product. The standard
George,
can you pls explain your correction ?
I supposed your first statement (At 1/4 wavelength, the charges are 90
degrees out of phase) was the correct one !
Paolo Roncone
Compuprint s.p.a.
Reply Separator
Subject:RE: Charge moving from
for George
Reply Separator
Subject:RE: Charge moving from decoupling capacitors
Author: george_t...@dell.com
List-Post: emc-pstc@listserv.ieee.org
Date: 5/22/00 9:14 PM
Barry,
I need to make a correction. I was rushing to lunch on Thursday,
forwarded for Kim.
Reply Separator
Subject:RTTE directive
Author: k...@i-data.com
List-Post: emc-pstc@listserv.ieee.org
Date: 5/23/00 12:12 PM
Dear all
According to the new RTTE directive we will have to supply our Declaration
of Conformity in
Vic,
There is no US legal obligation for EMC/safety on development boards
so long as they are offered for sale. If a system containing the
board is offered for sale, then the system must pass EMI requirements
any market-imposed safety requirements (e.g. UL1950).
Chris,
Have you considered spray-on conformal coating in the telco area? Tech Spray
SR is one option that is also UL Recognized.
Best Regards,
Jody Leber
jle...@ustech-lab.com
http://www.ustech-lab.com
U. S. Technologies
3505 Francis Circle
Alpharetta, GA 30004
770.740.0717
Fax:
Barry,
I need to make a correction. I was rushing to lunch on Thursday, so I did
not read over what I wrote. Here is the correction for the 2nd comment
below:
At 1/4 wavelength, the charges are 180 degrees out of phase, so they are
working against the IC current draw. 1/8 wavelength (90
Chris,
Clear away the ground plane to give you the proper clearance. You need to
be able to pass the tests without an external protector. You didn't mention
Part 68 in your message. You do need that as well, plus an FCC Registration
Number (although what you have to do to file for it may be
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