Shielded temp chambers
Does anyone know of a manufacturer of shielded temperature chambers? Anechoic/ferrite loaded? Ron Chernus Compliance Engineer, DENSO --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: RTTE
Try this - http://europa.eu.int/comm/enterprise/rtte/infor.htm http://europa.eu.int/comm/enterprise/rtte/infor.htm Jim Lyons -Original Message- From: John Juhasz [mailto:jjuh...@fiberoptions.com] Sent: Friday, February 23, 2001 3:47 PM To: 'emc-p...@ieee.org' Subject: RTTE Hi all . . . Does anyone have a link to the RTTE? Thanks. John A. Juhasz Product Qualification Compliance Engineer Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 631-419-2324 (direct) Fax: 631-567-8322 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: RTTE
http://europa.eu.int/comm/enterprise/rtte/infor.htm http://europa.eu.int/comm/enterprise/rtte/infor.htm Richard Woods -- From: John Juhasz [SMTP:jjuh...@fiberoptions.com] Sent: Friday, February 23, 2001 3:47 PM To: 'emc-p...@ieee.org' Subject: RTTE Hi all . . . Does anyone have a link to the RTTE? Thanks. John A. Juhasz Product Qualification Compliance Engineer Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 631-419-2324 (direct) Fax: 631-567-8322 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Air Flow Meters
OK, thanks for all the replies. It appears I am in search of a Hot Wire Anemometer. I've found several on the web, but all seem to use a telescoping probe for measurement, probably for air ducts. Does anyone know of a model that uses a wire for measurement so I can affix it to a modular plug in card, thus sealing the chassis. My goal is to measure air flow rates in each of 21 slots while the cards are installed (thus sealing the chassis for realistic air flow). Thx, Joe -Original Message- From: Joe Finlayson Sent: Friday, February 23, 2001 8:41 AM To: 'EMC PSTC'; 'NEBS Newsgroup' Subject: Air Flow Meters I'm interested in doing an air flow analysis on a per-slot basis for a modular chassis. Can anyone share their experience in using their favorite test tools for this function. One of my colleagues had mentioned that he recalls the use of a thermocouple-type lead that was used at his previous place of employment that measured air flow. Any knowledge of this type of product would be greatly appreciated as well. Thx, Joe * OLE Object: Picture (Metafile) Joe Finlayson Manager, Compliance Engineering Telica, Inc. 734 Forest Street, Bldg. G, Suite 100 Marlboro, MA 01752 Tel: (508) 804-8212 Fax: (508) 480-0922 Email:jfinlay...@telica.com Web: www.telica.com
RTTE
Hi all . . . Does anyone have a link to the RTTE? Thanks. John A. Juhasz Product Qualification Compliance Engineer Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 631-419-2324 (direct) Fax: 631-567-8322
Keypad tactility
I am looking for a US specification on cell phone keypad 5 key locating. Many handsets have the 5 key Nub, but is there a FCC/ADA/etc. spec? Is the IEEE or anyone else working on a spec? (I know where the basic requirements come from.) Ron Chernus Compliance Engineer, DENSO --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Welcome Mr. Woodgate :-)
b7.bb2f74a.27c7a...@aol.com, wmf...@aol.com wrote: It's good to hear from you in this forum! Do you still lurk at s.e.e.c.? Yes. But I don't recognise your e-mail address from that forum. I'm still trying to learn the new Google format. I have always subscribed through my ISP directly, not through DejaVu. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Compliance Statement per TCAM Recommendation
Correction: the 2nd sentence in the Compliance statement should be
This product is approved for use
in all members of EU and EFTA.
Vitaly Gorodetsky
Compliance Engineer Direct: (818) 678-3840
Canoga Perkins Corp.Main: (818) 718-6300
20600 Prairie StreetFAX:(818) 678-3740
Chatsworth, CA 91311-6008 e-mail:
vgorodet...@canoga.com mailto:vgorodet...@canoga.com
The suitability of this information for making decision is solely with the
reader
-Original Message-
From: Gorodetsky, Vitaly [SMTP:vgorodet...@canoga.com]
Sent: Thursday, February 22, 2001 2:27 PM
To: Emc-Pstc (E-mail)
Subject:Compliance Statement per TCAM Recommendation
Dear members and colleagues in EU:
As you are aware, TCAM has recently advised to include in user
manuals a
conformity statement in the languages of every country of EU/EFTA
targeted
for sales (potentially 11 languages).
I would greatly appreciate if you would help by translating the
following
statement in those languages. Everyone here dealing with
Telecommunication
Terminal Network Equipment would greatly benefit from your
contribution.
Hereby, {name of manufacturer} declares that this {type of
equipment
Model Number} is in compliance with the essential requirements and
other
relevant provisions of Directive 99/5/EC. This product is approved
for use
in all EU members of EFTA.
NOTE: The German, French, Spanish, and Finnish translations are
already
available - courtesy of Richard Wood. Thanks, Richard.
Best Regards and THANKS in advance,
Vitaly Gorodetsky
Sr. Compliance Engineer Direct: (818) 678-3840
Canoga Perkins Corp.Main: (818) 718-6300
20600 Prairie StreetFAX:(818) 678-3740
Chatsworth, CA 91311-6008 e-mail:
vgorodet...@canoga.com mailto:vgorodet...@canoga.com
The suitability of this information for making decision is solely
with the
reader
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
majord...@ieee.org
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Jim Bacher: jim_bac...@mail.monarch.com
Michael Garretson:pstc_ad...@garretson.org
For policy questions, send mail to:
Richard Nute: ri...@ieee.org
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
majord...@ieee.org
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Jim Bacher: jim_bac...@mail.monarch.com
Michael Garretson:pstc_ad...@garretson.org
For policy questions, send mail to:
Richard Nute: ri...@ieee.org
EMF Modeling Software
Is anyone in the group using modeling software to compute induced body currents or SAR in whole body models from fields from antennas? If so, what software and body models are you using and how happy are you with the program? Richard Woods --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Air Flow Meters
Joe The type of airflow measuring kit you have mentioned is a Hot Wire Anemometer. Starting price around $300. They will give you an air velocity reading in m/s or ft per min. You will not get be able to get a true cubic ft per minute reading using this type of device. For that you need a full blown air flow rig with with back pressure compenstation and know measurement apparatus sizes. A lot more than £300. But the Hot WIre Anemometer can be a very handy and easy to use tool. Basically it has a small constant area aperture on the end of a probe. Sitting in the middle is a hot resistor kept at a constant temperature. As the airflow increases, the amount of current required to keep the resistor at this temperature increases, and then the equipment does the smart bit of relating this current to air velocity. An important things to note about using one of these devices is to keep the angle of the aperture, relative to the air flow constant. A change of a few degrees can introduce large measurement errors if your air flows are low. This can be seen by simply rotating the sensor head in an airflow and recording the variation in readings. If you want to get an approximate air flow reading. You can extend a tube out form the slot and by placing the anemometer in the middle, get a reading for velocity through a known area. But this reading will only be an approximate as no account is taken for boundary layer effects of your tube or the presence of the sensor head. Nor will you be certain of the air velocities at the corners if you are measuring the air flow form a non circular slot. But for a generally investigation of air flows across a product, a very useful tool. Joe Finlayson wrote: I'm interested in doing an air flow analysis on a per-slot basis for a modular chassis. Can anyone share their experience in using their favorite test tools for this function. One of my colleagues had mentioned that he recalls the use of a thermocouple-type lead that was used at his previous place of employment that measured air flow. Any knowledge of this type of product would be greatly appreciated as well. Thx, Joe * ... Joe Finlayson Manager, Compliance Engineering Telica, Inc. 734 Forest Street, Bldg. G, Suite 100 Marlboro, MA 01752 Tel:(508) 804-8212 Fax:(508) 480-0922 Email: jfinlay...@telica.com Web:www.telica.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org -- Andrew Carson - Product Safety Engineer Xyratex Engineering Laboratory Tele 023 92496855 Fax 023 92496014 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Source for Acoustic Simulation Software
John (and Group): Sorry not to have further clarified this point in my original posting. I am indeed interested in simulating the noise generated by fans (primarily) and other sources within a design. Perhaps the most familiar application is for a 2m tall telecom frame that will need to meet the requirements of GR-63 for NEBS. I'm fairly certain there are similar requirements in ETSI 300 019, but I'd have to check. We're also seeing other acoustic specs that are similar in application for other designs ranging in size from a pizza box (~half the height of a desktop PC) to custom medical or other equipment. Our approach to date was to be as prudent as possible in the original design with respect to acoustics and filtering on our fans and make any modifications as needed once protos were available to measure the actual performance. Our mechanical engineering group is interested in taking a more deliberate approach in the future, if it's reasonable to consider doing so. I'm assuming from the lack of other responses that it is either my lack of clarity in this respect or the fact that this may not be done elsewhere that I haven't heard anything. Hopefully, I've alleviated the first option with this further explanation. Regards, Michael Garretson Sr. Compliance Engineer RadiSys Corporation +1 503 615-1227 John Woodgate j...@jmwa.demTo: michael.garret...@radisys.com on.co.ukcc: emc-p...@ieee.org Subject: Re: Source for Acoustic Simulation Software 02/22/01 07:56 PM of9f4741bb.813ef234-on882569fb.0082d...@radisys.com, michael.garret...@radisys.com wrote: Our mechanical engineering groups is looking for software that we can use to simulate the acoustic performance of a design prior to fabrication. What exactly is it you are trying to simulate? Acoustic noise from fans and/or motors? Performance of a built-in loudspeaker? -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
EU Automotive Standards
To all, Does anyone know which Directive and / or standard need be applied to a vehicle fire suppression system and controls that is mounted to a vehicle. This system detects gas and fire with strategically placed sensors and dispenses the fire suppression at the needed location. I've been told that the directive is 95/54/EC. Not sure if this is correct and I'm not sure which standards apply. Thanks, Bill --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Final EMC Testing In-House
Don't forget to ask for calibration certs for purchased equipment. Cal Certs are not automatic with the purchase of test equipment. - Original Message - From: Price, Ed ed.pr...@cubic.com To: marti...@appliedbiosystems.com; emc-p...@majordomo.ieee.org Sent: Thursday, February 22, 2001 3:19 PM Subject: RE: Final EMC Testing In-House Joe: You also should budget for: 1. A place to put the test equipment. 2. All the little associated goodies, like cables probes connectors the usual forgotten items. 3. Cost of maintenance and periodic calibration. 4. Somebody to learn how to do the testing and operate the equipment. Regards, Ed Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis -Original Message- From: marti...@appliedbiosystems.com [mailto:marti...@appliedbiosystems.com] Sent: Thursday, February 22, 2001 9:24 AM To: emc-p...@majordomo.ieee.org Subject: Final EMC Testing In-House Group, We are planning to perform final EMC testing in-house for the following tests per EN 61326: EN 61000-4-2 ESD EN 61000-4-4 Line Transients EN 61000-4-5 Surge EN 61000-4-6 Conducted Immunity EN 61000-4-11 Voltage Interruptions EN 61000-3-2 Harmonics EN 61000-3-3 Voltage Fluctuations With the exception of purchasing test equipment that meets the standards, what else is required for us to perform final testing? Please note that we are not planning to perform Radiated Emissions and Radiated Immunity testing. Your help is appreciated Joe Martin Applied Biosystems --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Air Flow Meters
I'm interested in doing an air flow analysis on a per-slot basis for a modular chassis. Can anyone share their experience in using their favorite test tools for this function. One of my colleagues had mentioned that he recalls the use of a thermocouple-type lead that was used at his previous place of employment that measured air flow. Any knowledge of this type of product would be greatly appreciated as well. Thx, Joe * ... Joe Finlayson Manager, Compliance Engineering Telica, Inc. 734 Forest Street, Bldg. G, Suite 100 Marlboro, MA 01752 Tel:(508) 804-8212 Fax:(508) 480-0922 Email: jfinlay...@telica.com Web:www.telica.com
Welcome Mr. Woodgate :-)
It's good to hear from you in this forum! Do you still lurk at s.e.e.c.? I'm still trying to learn the new Google format. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
NEMA Test House
Is there a test house in the Spokane, WA area (USA) that can do NEMA TS 1 and TS 2 testing? Thanks, Bob Heller 3M Company --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Final EMC Testing In-House
01c09d74.1acbb9a0.chris.chile...@ultronics.co.uk, Chris Chileshe chris.chile...@ultronics.co.uk wrote: If 1), then I believe you have covered all the tests, assuming supply frequency variations are captured in Voltage fluctuations. Do any product standards actually set limits for immunity to supply frequency variations? -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Final EMC Testing In-House
f9d85b6af82bd4119ae800d0b769603b2c6...@kestrel.vgscientific.com, Brian Harlowe brian.harl...@vgscientific.com wrote: Another English pennyworth to add to all the other correspondents. You will need to have the equipment calibrated at least once a year by a NAMAS lab or similar in order to maintain credibility of your measurements!!! There is no REQUIREMENT to do that. The ONLY requirement is that the Declaration of Conformity be true. If you choose to use cross- calibration or some other method, such as a unit's internal calibrator or an external calibrator that is itself checked by a measurements lab, that's up to you. It's all very well for you guys with million dollar budgets to give 'counsel of perfection' advice but the majority of firms are SMEs and can in no way afford to do all that you can do. Furthermore, it isn't necessary: the DTI published a document 'Minimising the cost of meeting the EC Directive on electromagnetic compatibility.' in August 1993. It should probably be re-issued. I can e-mail a scanned copy (.pdf) if anyone wants one. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Final EMC Testing In-House
Another English pennyworth to add to all the other correspondents. You will need to have the equipment calibrated at least once a year by a NAMAS lab or similar in order to maintain credibility of your measurements!!! Brian Harlowe Thermo V.G. Scientific Tel +44 (0)1342 327211 Fax +44 (0)1342 315074 -Original Message- From: marti...@appliedbiosystems.com Sent: 22 February 2001 17:24 To: emc-p...@majordomo.ieee.org Subject: Final EMC Testing In-House Group, We are planning to perform final EMC testing in-house for the following tests per EN 61326: EN 61000-4-2 ESD EN 61000-4-4 Line Transients EN 61000-4-5 Surge EN 61000-4-6 Conducted Immunity EN 61000-4-11 Voltage Interruptions EN 61000-3-2 Harmonics EN 61000-3-3 Voltage Fluctuations With the exception of purchasing test equipment that meets the standards, what else is required for us to perform final testing? Please note that we are not planning to perform Radiated Emissions and Radiated Immunity testing. Your help is appreciated Joe Martin Applied Biosystems --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Final EMC Testing In-House
Hi Joe, Not sure I've understood your question correctly. Are you asking 1) If there are further tests that need to be added to your list to complete the EMC requirements (excluding of course radiated emissions and immunity) or 2) What extra equipment you need to perform the tests you have already listed. If 1), then I believe you have covered all the tests, assuming supply frequency variations are captured in Voltage fluctuations. If 2), then following the standard should highlight the need for appropriate ground planes, grounding connections, correct cable lengths and types of insulation where appropriate. It might be an idea to establish clearly what your line impedance is when you do the harmonic measurements. Regards - Chris -Original Message- From: marti...@appliedbiosystems.com [SMTP:marti...@appliedbiosystems.com] Sent: Thursday, February 22, 2001 5:24 PM To: emc-p...@majordomo.ieee.org Subject:Final EMC Testing In-House Group, We are planning to perform final EMC testing in-house for the following tests per EN 61326: EN 61000-4-2 ESD EN 61000-4-4 Line Transients EN 61000-4-5 Surge EN 61000-4-6 Conducted Immunity EN 61000-4-11 Voltage Interruptions EN 61000-3-2 Harmonics EN 61000-3-3 Voltage Fluctuations With the exception of purchasing test equipment that meets the standards, what else is required for us to perform final testing? Please note that we are not planning to perform Radiated Emissions and Radiated Immunity testing. Your help is appreciated Joe Martin Applied Biosystems --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Source for Acoustic Simulation Software
of9f4741bb.813ef234-on882569fb.0082d...@radisys.com, michael.garret...@radisys.com wrote: Our mechanical engineering groups is looking for software that we can use to simulate the acoustic performance of a design prior to fabrication. What exactly is it you are trying to simulate? Acoustic noise from fans and/or motors? Performance of a built-in loudspeaker? -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: FLAME RATING OF STANDOFFS
c70e41e6f8e8d411b80700508bb8e2e526f...@caq010exch001u.corp.octel.com, Grant, Tania (Tania) tgr...@lucent.com wrote: Terry, I believe that the emphasis is on traceability of what the part actually is. We have noticed that UL field inspectors are lately no longer accepting good faith explanations, but require actual proof. The UL field office actually issued some letters regarding this intention some time back. If on this particular UL Procedure you have a certain standoff that requires to be insulated with a known flammability rating, you may have 2 avenues to explore: 1. Have the UL inspection done at the manufacturing location where this standoff is assembled onto your PC card. In that location should also be present immediate packaging containers that would identify what this non Recognized standoff is.Then the standoff manufacturer's specifications should identify the flammability information of this part. If that flammability information is not available, then you are left to challenge the original UL engineering decision that this particular standoff needs to be insulated.This topic has been covered adequately by Rich Nute and others earlier.(I've been horribly busy the last two days and am only now reading my e-mail.) 2. What if you fitted the standoff with a UL Recognized sleeving where the information is printed on this tubing or sleeving?Obviously, this change you would have to submit to UL. I think it would be worth while exploring. Tania Grant, tgr...@lucent.com Lucent Technologies, Switching Solutions Group Intelligent Network and Messaging Solutions -Original Message- From: Terry Meck [mailto:tjm...@accusort.com] Sent: Tuesday, February 20, 2001 7:44 AM To: emc-p...@ieee.org Subject: FLAME RATING OF STANDOFFS Hi group! I need a sanity check on a `new approach' our safety agency has recently taken. We have an open frame power supply ( has all the certs through the CB report etc. for EN 60950 UL 1950 ) On of the conditions of acceptability is one mounting standoff shall be insulated. We have this supply in no less then 4 listed products without any reference to the flame rating of the standoff having to be checked when the inspector comes in. I consider that to be reasonable. section 4.4.3.3 UL 1950 has exception: gears, cams, belts, bearings and other small parts which would contribute negligible fuel to a fire; Recently new products have been reviewed and the new procedures require `traceable 94V-2' standoffs!?!? Which manufacturing engineering says is difficult to procure a traceable recognized plastic standoff. Questions: Has my fever and pneumonia the past weeks clouded my reasoning? What am I missing? You place a .5 inch #6 standoff between a V-0 board and a medal chassis what requires a recognized part except maybe `straining out the gnats so we can swallow the camel' somewhere else. I didn't see the original post, so excuse me replying this way. If you are sure that 4.4.3.3 applies, then DON'T settle by 'doing what you're told'. That encourages safety agency personnel to invent their own 'standards'. But are you sure that the demand is that it has to be 94V-2, or is it just that it has to be 'traceable'? It might be a legitimate demand that the part is identifiable so that your procurement people can't buy Celluloid ones from Sum Yung Gai (apocryphal purveyor of guaranteed UNtraceable components to the unwary trade). -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Fire prevention materials
PSNet From time to time we have discussions of the issues of fire retardancy of materials. Here is a recent book review on this topic from IEEE Electrical Insulation Magazine, January/February 2001 —Vol. 17, No. 1. It may be of interest. - - - - - Fire Retardancy of Polymeric Materials A.F. Grand and C.A. Wilkie, eds. Marcel Dekker, Inc. 270 Madison Ave. New York, NY 10016 Phone +1 800 228 1160 Fax +1 212 685 4540 ISBN 0-8247-8879-6 http://www.dekker.com 572 pp; $225.00 (Hardcover), 2000 Years of developmental research and practical applications have led to the present state of fire retardants. A combination of both basic science and applied research are essential to understanding and development of fire retardants. With this in mind, the editors have compiled an excellent reference book combining both the science and practical application of modern fire retardants. This text identifies the properties and limitations of fire retardants in various polymers. The book has many research test methods and comparable “real world” application test methods. Thermal decomposition of polymers, including classification of polymers, thermal measurement techniques, and physical processes of decomposition are thoroughly covered. The following chapters then illustrate practical fire test methods, UL-specific testing requirements, and other engineering tests for fire retardancy. About one-third of the book contains a description and the effects of various fire retardants (halogens, silicone based, inorganics) in combination with various polymeric materials. Detailed figures of the molecular chemistry of the polymer and additive are used to show the decomposition process. There is new information on char-forming additives for commodity plastics, intended to limit the decomposition of the polymer. There is an interesting chapter tying real-world fire to quantitative estimates on thermochemistry of flaming combustion, which illustrates, in technical detail, the process of combustion. There are graphs relating surface temperature to fire size and equations used to estimate the amount of damage expected from a given heat flux. There is a chapter relating toxicity and fire hazards to fire-retardant performance and even a chapter on molecular-level (Schrodinger equation, wave functions, etc.) considerations for fire retardants. This is an excellent reference book on fire retardants for those needing to understand the process of combustion of polymeric materials and the practical implementation of fire testing, and of researchers working in the field of polymers especially using fire retardants. - - - - - br, Pete Peter E Perkins, PE Principal Product Safety Consultant Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: FLAME RATING OF STANDOFFS
Terry, I believe that the emphasis is on traceability of what the part actually is. We have noticed that UL field inspectors are lately no longer accepting good faith explanations, but require actual proof. The UL field office actually issued some letters regarding this intention some time back. If on this particular UL Procedure you have a certain standoff that requires to be insulated with a known flammability rating, you may have 2 avenues to explore: 1. Have the UL inspection done at the manufacturing location where this standoff is assembled onto your PC card. In that location should also be present immediate packaging containers that would identify what this non Recognized standoff is.Then the standoff manufacturer's specifications should identify the flammability information of this part. If that flammability information is not available, then you are left to challenge the original UL engineering decision that this particular standoff needs to be insulated.This topic has been covered adequately by Rich Nute and others earlier.(I've been horribly busy the last two days and am only now reading my e-mail.) 2. What if you fitted the standoff with a UL Recognized sleeving where the information is printed on this tubing or sleeving?Obviously, this change you would have to submit to UL. I think it would be worth while exploring. Tania Grant, tgr...@lucent.com Lucent Technologies, Switching Solutions Group Intelligent Network and Messaging Solutions -Original Message- From: Terry Meck [mailto:tjm...@accusort.com] Sent: Tuesday, February 20, 2001 7:44 AM To: emc-p...@ieee.org Subject: FLAME RATING OF STANDOFFS Hi group! I need a sanity check on a `new approach' our safety agency has recently taken. We have an open frame power supply ( has all the certs through the CB report etc. for EN 60950 UL 1950 ) On of the conditions of acceptability is one mounting standoff shall be insulated. We have this supply in no less then 4 listed products without any reference to the flame rating of the standoff having to be checked when the inspector comes in. I consider that to be reasonable. section 4.4.3.3 UL 1950 has exception: gears, cams, belts, bearings and other small parts which would contribute negligible fuel to a fire; Recently new products have been reviewed and the new procedures require `traceable 94V-2' standoffs!?!? Which manufacturing engineering says is difficult to procure a traceable recognized plastic standoff. Questions: Has my fever and pneumonia the past weeks clouded my reasoning? What am I missing? You place a .5 inch #6 standoff between a V-0 board and a medal chassis what requires a recognized part except maybe `straining out the gnats so we can swallow the camel' somewhere else. Sick and Tired Terry J. Meck Senior Compliance / Test Engineer Accu-Sort Systems --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Compliance Statement per TCAM Recommendation
cc2346e0526cd31180960090279c68d004bf1...@netmail.canoga.com, Gorodetsky, Vitaly vgorodet...@canoga.com wrote: his product is approved for use in all EU members of EFTA. That last bit isn't right. EU and EFTA are different groups of states. It should probably read 'all EU and EFTA member states'. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
