Import requirements
Can anyone on this board help me out with the requirements for import of ITE into Saudi Arabia? Do they have specific national requirements? Are they accepting of a DOC as is the EC? Perhaps UL marks are enough? What about EMC? What I am looking for is information that will allow me to clear customs hopefully with no additional testing other than the European CE mark requires. Thanks Jim - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Seeking PCs that Pass CISPR
In a message dated 3/5/99 3:10:49 PM Central Standard Time, b...@namg.us.anritsu.com writes: Chaz made a very good point. The reality unfortunately is that some PCs on the market don't meet the standards although they have FCC sticks or CE markings. Do we need some more law enforcement? Barry Ma It would be interesting if Accredited labs, as part of their charter, would have to forward noncompliant data they recorded on a device if it had been purchased from the market place... Help the FCC find offenders much easier. Derek. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Invitation from ECMA/EACEM - Safety of Electronic Equipment Stand
As an inactive member of ECMA TC 12, and a TC 12 contributor for the first year of this work, I am fowarding a message from Bob Griffin, Compaq, regarding a new product safety standard for electronic equipment. Unfortunately, I am unable to include the files Bob describes. (Apparently, the listserver can't handle the large files.) You can obtain the files on request of Bob. Best regards, Rich As an interested party in the development and/or use of product safety standards for Information Technology and Consumer Electronics in the United States, ECMA and EACAM would like to invite you or your designate to participate in a presentation and discussion regarding the their draft standard - Safety of Electronic Equipment. Where: Compaq Computer Corporation, Houston Texas Compaq Conference Center - Singapore Room When: Wednesday, 17 March 1999 Time: 10:00 am until 4pm The attached files include the Invitation, agenda, hotel information, maps and driving instructions from the Airport and hotel areas. Both PDF and Word 7.0 versions are provided. If anyone has trouble with the attached files, please provide me with a fax number and I'll have it faxed immediately. Invite317a.pdf Invite317.doc A pdf version of the standard will be forwarded under separate cover but can be obtained immediately from the ECMA web site at Draft Safety standard.url or http://www.ecma.ch/news/safety.htm http://www.ecma.ch/news/safety.htm For more information on ECMA www.ecma.ch http://www.ecma.ch EACEMwww.eacem.be http://www.eacem.be ECMA and EACEM encourage you to send this invitation to all interested parties. There will be similar event held in Geneva during April 99 for European interests. If you have any questions, please feel free to contact me. We look forward to seeing everyone in Houston. On behalf of ECMA and EACEM Bob Griffin, 281-514-4896 Compaq Computer Corp. Manager, Product Regulations Email: robert.grif...@compaq.com mailto:robert.grif...@compaq.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Seeking PCs that Pass CISPR
Chaz made a very good point. The reality unfortunately is that some PCs on the market don't meet the standards although they have FCC sticks or CE markings. Do we need some more law enforcement? Barry Ma - Original Text From: Grasso, Charles (Chaz) gra...@louisville.stortek.com, on 3/5/99 11:27 AM: I am confused. What's the problem? If we (the EMC Community) have faith in Plug Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass. -Original Message- From: Nathan Belsher [mailto:nbels...@nortelnetworks.com] Sent: Friday, March 05, 1999 6:45 AM To: eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject: RE: Seeking PCs that Pass CISPR Eric, I understand your dilemma. Having been on both sides of the fence of this issue I must say it can be a sticky issue. At the very least it can be very time consuming testing various machines to get a quiet one. Here is my current experience and my recommendation from past experience. I have just recently finished another round of testing for FCC, CISPR, BELLCORE, and EN50082-1 on a system that has gone through this testing several times as I do my work on ASDL modems. I have had better than 4 dbuv margin on my DELL OPTIPLEX GXPRO 200 MHz. Pentium PRO. Only the usual problem of having to reseat the cover has ever been a problem for us. I read Randy Flinders comments and he has some merit. Randy has had a lot of pc testing himself on the West coast. Here is my recommendation for power users such as yourself. Call up the EMC department at your friendly PC manufacturer. Tell them you buy several systems a year for EMC testing. Ask for their current recommendation of a system to meet your requirements. Ask them if they will do a courtesy audit of the system you buy before you get it and verify it meets the required standards particularly radiated emissions. You can place the order through regular sales channels and have it shipped to the EMC engineering department where they test it as an audit test and then ship it on to you with the complimentary data package. This may add about one month to your procurement cycle but it gets positive results. This is the only way I know to be sure you get an EMC compliant system. Nathan Belsher NORTEL NETWORKS Senior EMC Engineer Phone: (919)-991-2769 ESN:351-2769 FAX: (919)-991-8724 E-Mail: nbels...@nortelnetworks.com -Original Message- From: eric.lif...@natinst.com [SMTP:eric.lif...@natinst.com] Sent: Wednesday, March 03, 1999 6:11 PM To: emc-p...@majordomo.ieee.org Subject:Seeking PCs that Pass CISPR Colleagues, My (formerly) preferred vendor of Intel based personal computer systems, used for CISPR-11/22 and immunity testing of our boards and peripherals, are lately having emissions up to the Class A limit fresh out of the box - without any peripherals attached. So I must query the List Members for experience-based suggestions for make and model of a passing system that I can buy here in the USA. I need Pentium II equivalent PCI/ISA systems that pass Class A with at least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis for most of a year. Systems that can pass EN 50082-1:1998 (or EN 61326-1:1998) would be nice but I suspect few, if any, are available. We buy about 4 new machines each year as they wear out. Please don't suggest that I complain to the PC vendor since I really don't have time to spend on the matter. I've already traded our newest PC to another department that doesn't care about EMC in exchange for an older compliant PC. I just need a long-term solution. Most importantly, please send your recommendations direct to me to minimize clutter on the list. Unless you specify not to, I'll post a summary of all comments to the list since I believe others are equally interested in the results. Regards and Thanks In Advance, Eric Lifsey Compliance Engineer/Manager National Instruments - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming
Seeking PCs that Pass CISPR
Just for the record, I have been very pleased with the HP Kayak machine. The cover was very easy to remove by just flipping two levers, and even after numerous removals it remained reliable. The gasketing was very good both around the cover and on the I/O panel. If degradation of the gasket were to occur, it is very easy to restore the fingers by simply pulling up on them a bit. Just my $.02 - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Seeking PCs that Pass CISPR
Chaz, You are such a funny guy; everyone is a comedian. But seriously folks... We have been fighting this battle for a long time and I do not believe it was any better before the DoC process adopted by the FCC than it is now. The major PC manufacturers are doing the same thing today as they did then. The only people that are taking advantage of the new system are those slap together PC outfit's that none of us buy form anyway. What I am looking to do is purchasing an industrial PC which can be taken apart more than once without severe degradation in RF performance. If anyone knows of a manufacturer with this type of PC, please let us all know. If there is no such animal well, here is an opportunity for someone to make a great deal of money supplying all of us test engineers with good PC's (and peripherals for that matter). Thank you, Kevin J. Hight -- Regulatory Compliance Engineer Exabyte Corporation 1777 Exposition Drive, Building #7 Boulder, Colorado 80301 Phone: 303-417-5534; Fax: 303-417-5710 Pager: 303-855-7029; Email: kev...@exabyte.com -Original Message- From: Grasso, Charles (Chaz) [mailto:gra...@louisville.stortek.com] Sent: Friday, March 05, 1999 10:01 AM To: 'Nathan Belsher'; eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject: RE: Seeking PCs that Pass CISPR I am confused. What's the problem? If we (the EMC Community) have faith in Plug Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass. -Original Message- From: Nathan Belsher [mailto:nbels...@nortelnetworks.com] Sent: Friday, March 05, 1999 6:45 AM To: eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject: RE: Seeking PCs that Pass CISPR Eric, I understand your dilemma. Having been on both sides of the fence of this issue I must say it can be a sticky issue. At the very least it can be very time consuming testing various machines to get a quiet one. Here is my current experience and my recommendation from past experience. I have just recently finished another round of testing for FCC, CISPR, BELLCORE, and EN50082-1 on a system that has gone through this testing several times as I do my work on ASDL modems. I have had better than 4 dbuv margin on my DELL OPTIPLEX GXPRO 200 MHz. Pentium PRO. Only the usual problem of having to reseat the cover has ever been a problem for us. I read Randy Flinders comments and he has some merit. Randy has had a lot of pc testing himself on the West coast. Here is my recommendation for power users such as yourself. Call up the EMC department at your friendly PC manufacturer. Tell them you buy several systems a year for EMC testing. Ask for their current recommendation of a system to meet your requirements. Ask them if they will do a courtesy audit of the system you buy before you get it and verify it meets the required standards particularly radiated emissions. You can place the order through regular sales channels and have it shipped to the EMC engineering department where they test it as an audit test and then ship it on to you with the complimentary data package. This may add about one month to your procurement cycle but it gets positive results. This is the only way I know to be sure you get an EMC compliant system. Nathan Belsher NORTEL NETWORKS Senior EMC Engineer Phone: (919)-991-2769 ESN:351-2769 FAX: (919)-991-8724 E-Mail: nbels...@nortelnetworks.com -Original Message- From: eric.lif...@natinst.com [SMTP:eric.lif...@natinst.com] Sent: Wednesday, March 03, 1999 6:11 PM To: emc-p...@majordomo.ieee.org Subject:Seeking PCs that Pass CISPR Colleagues, My (formerly) preferred vendor of Intel based personal computer systems, used for CISPR-11/22 and immunity testing of our boards and peripherals, are lately having emissions up to the Class A limit fresh out of the box - without any peripherals attached. So I must query the List Members for experience-based suggestions for make and model of a passing system that I can buy here in the USA. I need Pentium II equivalent PCI/ISA systems that pass Class A with at least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis for most of a year. Systems that can pass EN 50082-1:1998 (or EN 61326-1:1998) would be nice but I suspect few, if any, are available. We buy about 4 new machines each year as they wear out. Please don't suggest that I complain to the PC vendor since I really don't have time to spend on the matter. I've already traded our newest PC to another department that doesn't care about EMC in exchange for an older compliant PC. I just need a long-term solution. Most importantly, please send your recommendations direct to me to minimize clutter on the list.
RE: Seeking PCs that Pass CISPR
Yes, I have the same experience and good impression of EMC quality with Gateway 2000 PC. To my knowledge, an EMC lab, RTL (http://www.rheintech.com) does EMC service for Gateway. Barry Ma Antitsu Company Morgan Hill, CA 95037 - Original Text From: Flinders, Randall randall.flind...@emulex.com, on 3/4/99 12:50 PM: Eric, We have run into the same problem here at Emulex. Our Host PC's need to provide Class B compliance - something that seems hard to find these days. We have evaluated many, many, many PCs, and in the end, decided on a Gateway 2000 Tower. Our requirements are more stringent than most, because our add-in PCI adapters implement a 1GHz clock rate and fire off a 1GHz data signal down a 30 meter copper line. This presents problems from a chassis integrity point of view, due to the fact that we measure to 5 GHz and just about any slot is a transmitter at those frequencies. The Gateway 2000 Tower PC implements conductive gaskets instead of metal fingers at the chassis access panel, which eliminates in-between slots. The gaskets also seem to hold up to continuous opening of the access panel better than the fingers, which tend to break and/or bend. In addition, the Gateway 2000 PC has metal fingers installed on the ISA/PCI slots at the rear of the chassis, ensuring a good contact to the card brackets. Our analysis of the PC has shown that the unit provides 4-5 dB of margin to CISPR 22 Class B, and was verified on multiple test sites. I would recommend you give Gateway a try. Our unit is Model Number: LPMini-Tower 6P6-300. We also chose the upgraded 17 monitor which is made by Mitsubishi (Model TFV87055KHKW). It provides an excellent profile as well. Good luck on your hunt! Randy Flinders EMC Engineer Emulex Network Systems (714) 513-8012 randall.flind...@emulex.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Seeking PCs that Pass CISPR
About 30 years ago, I read a book entitled The True Believer by Eric Hoffer, I think. In it he stated that revolutionaries often bring beneficial changes to mankind, but seldom reap the benefits themselves. Over the years I have found this to be true. However, I would certainly encourage anyone who wants to straighten this problem out to go for it. -Original Message- From: Grasso, Charles (Chaz) [SMTP:gra...@louisville.stortek.com] Sent: Friday, March 05, 1999 10:01 AM To: 'Nathan Belsher'; eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject:RE: Seeking PCs that Pass CISPR I am confused. What's the problem? If we (the EMC Community) have faith in Plug Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass. -Original Message- From: Nathan Belsher [mailto:nbels...@nortelnetworks.com] Sent: Friday, March 05, 1999 6:45 AM To: eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject: RE: Seeking PCs that Pass CISPR Eric, I understand your dilemma. Having been on both sides of the fence of this issue I must say it can be a sticky issue. At the very least it can be very time consuming testing various machines to get a quiet one. Here is my current experience and my recommendation from past experience. I have just recently finished another round of testing for FCC, CISPR, BELLCORE, and EN50082-1 on a system that has gone through this testing several times as I do my work on ASDL modems. I have had better than 4 dbuv margin on my DELL OPTIPLEX GXPRO 200 MHz. Pentium PRO. Only the usual problem of having to reseat the cover has ever been a problem for us. I read Randy Flinders comments and he has some merit. Randy has had a lot of pc testing himself on the West coast. Here is my recommendation for power users such as yourself. Call up the EMC department at your friendly PC manufacturer. Tell them you buy several systems a year for EMC testing. Ask for their current recommendation of a system to meet your requirements. Ask them if they will do a courtesy audit of the system you buy before you get it and verify it meets the required standards particularly radiated emissions. You can place the order through regular sales channels and have it shipped to the EMC engineering department where they test it as an audit test and then ship it on to you with the complimentary data package. This may add about one month to your procurement cycle but it gets positive results. This is the only way I know to be sure you get an EMC compliant system. Nathan Belsher NORTEL NETWORKS Senior EMC Engineer Phone: (919)-991-2769 ESN:351-2769 FAX: (919)-991-8724 E-Mail: nbels...@nortelnetworks.com -Original Message- From: eric.lif...@natinst.com [SMTP:eric.lif...@natinst.com] Sent: Wednesday, March 03, 1999 6:11 PM To: emc-p...@majordomo.ieee.org Subject:Seeking PCs that Pass CISPR Colleagues, My (formerly) preferred vendor of Intel based personal computer systems, used for CISPR-11/22 and immunity testing of our boards and peripherals, are lately having emissions up to the Class A limit fresh out of the box - without any peripherals attached. So I must query the List Members for experience-based suggestions for make and model of a passing system that I can buy here in the USA. I need Pentium II equivalent PCI/ISA systems that pass Class A with at least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis for most of a year. Systems that can pass EN 50082-1:1998 (or EN 61326-1:1998) would be nice but I suspect few, if any, are available. We buy about 4 new machines each year as they wear out. Please don't suggest that I complain to the PC vendor since I really don't have time to spend on the matter. I've already traded our newest PC to another department that doesn't care about EMC in exchange for an older compliant PC. I just need a long-term solution. Most importantly, please send your recommendations direct to me to minimize clutter on the list. Unless you specify not to, I'll post a summary of all comments to
RE: Seeking PCs that Pass CISPR
Unfortunately - its now the law (of this land) anyway!! -Original Message- From: lfresea...@aol.com [mailto:lfresea...@aol.com] Sent: Friday, March 05, 1999 10:17 AM To: Grasso, Charles (Chaz); nbels...@nortelnetworks.com; eric.lif...@natinst.com; emc-p...@majordomo.ieee.org Subject: Re: Seeking PCs that Pass CISPR In a message dated 3/5/99 11:01:58 AM Central Standard Time, gra...@louisville.stortek.com writes: I am confused. What's the problem? If we (the EMC Community) have faith in Plug Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass. I can't imagine ANY EMC engineer having faith in a plug and play approach! Derek. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Seeking PCs that Pass CISPR
In a message dated 3/5/99 11:01:58 AM Central Standard Time, gra...@louisville.stortek.com writes: I am confused. What's the problem? If we (the EMC Community) have faith in Plug Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass. I can't imagine ANY EMC engineer having faith in a plug and play approach! Derek. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Field probes
Dear All We have a Holaday isotropic, broad band field sensing system comprising of a HI-4400 monitor and a HI-4421 probe. These two units are connected together by an optical fibre and this is where our problem lies. The system is old and the fibre optic cable has broken. We have been informed by our suppliers that Holaday no longer make the cable and that we will have to replace the entire system (the latest model uses a different type of fibre optic with different connectors). This is no solution. Does any kind hearted soul have a spare cable they'd be willing to sell, or even have any information about possible suppliers. Any help woul be appreciated. Thank you John Harrington EMC Group Manager, KTL Hull Telephone : +44 (0) 1482 801801 Fax : +44 (0) 1482 801806 email : jharring...@ktl.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: PCB coating questions
Arjen, For insulation over PCB traces, some types of dry film solder mask might be suitable. These films are manufactured to a consistent thickness, and then laminated to the PCB. You need to check with your board vendor as to types and approval ratings. These films are very tough, just ask anyone who has ever tried to scrape through one in order to expose a trace for rework. You will want to make sure that your PCBs are fabricated as SMOBC, or solder mask over bare copper.Tin coatings have a tendency to flow when boards are wave soldered or reflowed, and may weaken the integrity of solder mask. You will also get better performance at high frequencies. As to conformal coatings, there are several issues to consider. The first is cleanliness. No-clean flux leaves a thin film over the PCB surface which will prevent proper adhesion of coatings. Most conformal coatings are intended for protection against moisture and humidity, and voids under the coating won't matter. For arc prevention, the coating must adhere tightly to the board and components. The second issue is how much of the board to coat. Coatings tend to interfere with repairs. Even repairable coatings make the job more difficult, and more importantly, tend to create voids when heated with a soldering iron. If only certain portions of your boards require protection you might consider selectively applying an epoxy potting compound to those areas. I hope that this will be of some help. Scott - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Seeking PCs that Pass CISPR
Eric, I understand your dilemma. Having been on both sides of the fence of this issue I must say it can be a sticky issue. At the very least it can be very time consuming testing various machines to get a quiet one. Here is my current experience and my recommendation from past experience. I have just recently finished another round of testing for FCC, CISPR, BELLCORE, and EN50082-1 on a system that has gone through this testing several times as I do my work on ASDL modems. I have had better than 4 dbuv margin on my DELL OPTIPLEX GXPRO 200 MHz. Pentium PRO. Only the usual problem of having to reseat the cover has ever been a problem for us. I read Randy Flinders comments and he has some merit. Randy has had a lot of pc testing himself on the West coast. Here is my recommendation for power users such as yourself. Call up the EMC department at your friendly PC manufacturer. Tell them you buy several systems a year for EMC testing. Ask for their current recommendation of a system to meet your requirements. Ask them if they will do a courtesy audit of the system you buy before you get it and verify it meets the required standards particularly radiated emissions. You can place the order through regular sales channels and have it shipped to the EMC engineering department where they test it as an audit test and then ship it on to you with the complimentary data package. This may add about one month to your procurement cycle but it gets positive results. This is the only way I know to be sure you get an EMC compliant system. Nathan Belsher NORTEL NETWORKS Senior EMC Engineer Phone: (919)-991-2769 ESN:351-2769 FAX: (919)-991-8724 E-Mail: nbels...@nortelnetworks.com -Original Message- From: eric.lif...@natinst.com [SMTP:eric.lif...@natinst.com] Sent: Wednesday, March 03, 1999 6:11 PM To: emc-p...@majordomo.ieee.org Subject:Seeking PCs that Pass CISPR Colleagues, My (formerly) preferred vendor of Intel based personal computer systems, used for CISPR-11/22 and immunity testing of our boards and peripherals, are lately having emissions up to the Class A limit fresh out of the box - without any peripherals attached. So I must query the List Members for experience-based suggestions for make and model of a passing system that I can buy here in the USA. I need Pentium II equivalent PCI/ISA systems that pass Class A with at least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis for most of a year. Systems that can pass EN 50082-1:1998 (or EN 61326-1:1998) would be nice but I suspect few, if any, are available. We buy about 4 new machines each year as they wear out. Please don't suggest that I complain to the PC vendor since I really don't have time to spend on the matter. I've already traded our newest PC to another department that doesn't care about EMC in exchange for an older compliant PC. I just need a long-term solution. Most importantly, please send your recommendations direct to me to minimize clutter on the list. Unless you specify not to, I'll post a summary of all comments to the list since I believe others are equally interested in the results. Regards and Thanks In Advance, Eric Lifsey Compliance Engineer/Manager National Instruments - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: PCB coating questions
Arjen, Board with only solder mask is considered as non coated. Conformal coating is the type accepted to be allowed to reduce the spacing between trace. However be aware that your safety agency will have to test that coating. The test is described in UL1950 (I do not remember the section and do not have the standard at hand now). Also an audit of your process for applying the coating will be performed periodically. This is in addition to the normal safety audit. Daniel Sicard Compliance Engineer / Ingénieur Certification Transport Systems Business Unit RELTEC Corporation Tel: 514-685-1737 Ext. 4631 Fax: 514-822-4054 Web: http://www.relteccorp.com E-mail: mailto:dsic...@positronfiber.com -Original Message- From: Arjen Dragt [SMTP:adr...@inverpower.com] Sent: Thursday, March 04, 1999 2:59 PM To: EMC-PSTC Listserv Subject: PCB coating questions In looking at meeting CSA and UL spacing requirements for some of our PCB's (in power supplies up to 600 V) some questions concerning the use of conformal coatings (allowing reduction of spacing) have come up. The information that I am seeking is for both CSA and UL; the wording that they use concerning coatings on boards is similar, but not the same. Coatings on a PCB could include both a solder mask, and a strict conformal coating. Does anybody have real-world knowledge as to whether or not a solder mask is accepted by UL/CSA as a coating, and if so, under what conditions? Also, the method by which a coating is applied to a board could have considerable impact on the effectiveness of that coating. For instance, spraying a board will not get at any traces that are buried underneath components, whereas dipping will have a better chance of accessing those hidden areas. The standards that I am looking at say nothing about method of applying a coating (the process). I assume that the decision as to how a coating will be applied is left up to the manufacturer and board supplier. Does anybody out there have best practices that are worth considering when looking at our options for coating methods? Arjen Dragt - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Digital Set-top Box is not Broadcast receivers?
Hellow Group. I confuse the standard of Digital Set-Top Box LUCCE-2000 whether it is ITE. It is called 'Set-Top Box' usually.But It has differnt things compare with Set-Top Box. It has two major product family standards. First,About ITE function - Ethernet Port ; High speed Internet output to a PC. At this time it operate like as Modem. - LINE Input Port ; Receive MPEG encording Data from Digital casting Company.- memory(36M) function It decording the received data and then display.- processing Second,About Broadcast receivers function - RF IN Jacks ; For additonal signal input:TV antenna,cable company etc. - RCA AUDIOVIDEO Jacks ; Output for compatible VCR and/or TV equipped with input jacks. Though it should be tested comply with EN55013 and EN55020,there are some unfit point. - It doesn't have Tuner.Antenna Jack is only bypass to RF Out jack. This jack must be connectd to a cable source if the user wish to watch one program through the TV tuner while recording another through the ITV Box tuner. What Standards are it be applied? I think that is ITE. Would be happy to help. Best regards. Tommy. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: CE marking - self-certification and the long arm of the law
Peter, Thanks for your ideas. I might add that I like to have one of the people above my level and within the same company to sign it while pointing out that there are penalties for signing falsely these documents. It helps to calm down those who also ask questions like what are the chances we'll get caught! Its always easier to get it done properly if they have some personal stake in the consequences. Just so that a bunch of legal authorities don't start showing up at my desk, I would point out that I have never had this problem here, and I won't identify the person or the company that I really had a heartburn trying to convince. But I have in the past had to throw a few raging fits over the early shipping of a product. Gary -Original Message- From: Peter E. Perkins [mailto:peperk...@compuserve.com] Sent: Wednesday, March 03, 1999 8:50 PM To: PSNetwork Subject:CE marking - self-certification and the long arm of the law PSNet Richard, The legal questions can only be answered by European lawyers and courts. As far as I know, there have not been any cases which looked to hold non-Europeans responsible to the extent they would be fined or serve jail time. If it is a major problem we can expect international negotiations to extradite folks for this. But practically, if the product is sold by a company which has any European presence - a subsidiary, dealer or importer - the courts probably could find a way to hold one of those folks responsible. I know of a case where the President of a sub was jailed because a product didn't meet European safety requirements. I have heard of another case where an executive of a large company was handcuffed and taken away at immigration because he was named as being responsible for some action that was not allowed in Europe - unfortunately, this poor fellow was coming to Europe for a vacation, not on company business and his wife and family were just left standing there to fend for themselves... For smaller companies, I recommend that they get one of their Euro contacts - importers, dealers, etc. - to countersign the MDoC to provide the 'going to jail' person. There are, also, some firms (legal firms, as I remember) who will sign and hold your MDoC, etc for a nominal fee... What other routes might be available? perhaps others have some ideas... - - - - - Peter E Perkins Principal Product Safety Consultant Tigard, ORe 97281-3427 +1/503/452-1201 phone/fax p.perk...@ieee.org email visit our website: http://ourworld.compuserve.com/homepages/peperkins - - - - - - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Philippines India
Would anyone be so kind as to indicate which ITE requirements along with approval programs, if any, cover EMC and Safety for the following countries; India Philippines Your kind assistance would be most appreciated. Serge F R Bousquet 124 Changklan Road, (#109) Muang, Chiang Mai, 50100 Kingdom of Thailand Telephone Facsimile: (66)53 816326 Internet: bousq...@cm.ksc.co.th 92 VT1100c - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
FW: HIgh Field Testing
CKC Laboratories can do large portions of HIRF testing, and would be happy to help. Please Contact: Pat Andre' Laboratory Manager / EMC Consultant CKC Laboratories Redmond, Wa. pan...@ckc.com Sincerely, Steve Behm Laboratory Supervisor CKC Laboratories sb...@ckc.com -Original Message- From: lfresea...@aol.com [SMTP:lfresea...@aol.com] Sent: Wednesday, March 03, 1999 4:08 PM To: emc-p...@majordomo.ieee.org Subject:HIgh Field Testing Hi there, I'm looking for locations that can help me HIRF test an LRU. This unit is mounted outside the fuselage on a rotary aircraft. Not a really nice place to be Thanks, Derek. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: New EMC requirements proposed for IEC60335
Ravinder, Indeed, the IBM ESD furniture-type ESD simulator should be long remembered! The purpose of this kind of test is equipment a customer will WANT to buy. If we are wise, we go _beyond_ what the law requires, so we will gain the trust of our customers. Often, management views tests such as these as an expensive, necessary evil, but they are more vital than that. I once saw color TV's on sale for $75. When I asked why, the store manager told me the parent company -- which I will not name -- had gotten a great deal on color TV's and didn't realize until too late that the manufacturer sold them on the understanding that a third of 'em wouldn't work out of the box. No problem! Throw away bad set. You buy cheap TV, still make money! What it did to customer loyalty... I understand that national chain is no longer in business. Ad astra -- per Aspirin! Cortland = On 4 March, Ravinder Ajmani wrote: I fully support Lacey's views about performing some immunity testing on the products, in order to improve their reliability. Long before FCC/EU implemented EMC requirements on the electronic products, IBM had formulated emissions and immunity standards for their products. Even now some of the IBM standards are tougher than the FCC/EU standards, while a few others do not figure in EU requirements. The only purpose for these internal standards is to make sure that customer has no cause for complaints, even when the equipment is not used as per the manufacturer's recommendations. We keep on devising new tests to emulate the working of our products under severe stress conditions, some of which may be caused by the poor quality of auxiliary equipment used by our customers. Again, if these extra requirements are designed-in, the cost to the company is extremely low. All it needs is the awareness in the designers to take these requirements in to consideration at the early design stage. Bigger companies like IBM can afford to have a dedicated person overseeing these needs, but then they also have lot more products. Smaller companies can train there design engineers in EMC practices. Also, there are inexpensive tools, which although not perfect, can provide big help in making first prototype almost right. All this certainly saves you big bucks at the test labs, and putting retrofits to mitigate EMC problems, once the product has been built. As Lacey has pointed out, we are going to see more susceptibility problems in household equipment as our home PCs become faster and faster, and microprocessors are used in increasing numbers of household appliances. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
