RE: Vehicle Mounted PCB's
You could look to the SAE J1113 Surface Vehicle standard. This covers EMC, ESD and physical environmental requirements for vehicle equipment. Further, the major auto companies have internal standards. (The only one I can recall is Ford's ES-XW7T-1A278-AB EMC specification.) 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 Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis -Original Message- From: Gary McInturff [mailto:gary.mcintu...@worldwidepackets.com] Sent: Friday, December 06, 2002 11:17 AM To: David Sproul; EMC-PSTC Subject: RE: Vehicle Mounted PCB's sprays bank notes with red ink when it believes a robbery is taking place. And you want to sell it the US - heavens forbid! The new government administration is already putting our money in the red fast enough and doesn't need the additional help! I don't know what standards are involved but it seems customers not buying the product because of these problems would would drive a re-design pretty darn quickly. Gary -Original Message- From: David Sproul [mailto:david.spr...@alexanderlynn.co.uk] Sent: Thursday, December 05, 2002 11:19 AM To: EMC-PSTC Subject: Vehicle Mounted PCB's Dear group, A customer has been asked to redesign a board to stop it malfunctioning due to vibration, temperature and radio interference. They have been given a control PCB which they are told is the main culprit for the malfunctions. They circuit is mounted in an armoured vehicle as part of a security system which sprays bank notes with red ink when it believes a robbery is taking place. Apparently it sprays ink if it gets too hot, too cold, gets bumped, or if a radio or mobile phone is operated too close to it. The bad news is that this is on the market and being used by security firms within the UK and mainland Europe, with no real evidence of previous compliance with anything. Should this comply with any of Vehicle directive requirements? Are there any peculiar EMC requirements other than the usual 61000 series? What standard is likely to cover this device for use in vehicles? Although they haven't asked, what would be the most appropriate standard to cover safety requirements for this device. (Although is runs of only 12V, I am concerned about a fault causing a short across the battery, for example)? There was mention of selling it in the US too. If any has thoughts on what such a device should comply with there, all comments would be gratefully received. If you are thinking of writing back and suggesting the device be thrown in the bin, then I'm sorry to say that someone else has beaten you to it. Best regards, David Sproul,
RE: Vehicle Mounted PCB's
sprays bank notes with red ink when it believes a robbery is taking place. And you want to sell it the US - heavens forbid! The new government administration is already putting our money in the red fast enough and doesn't need the additional help! I don't know what standards are involved but it seems customers not buying the product because of these problems would would drive a re-design pretty darn quickly. Gary -Original Message- From: David Sproul [mailto:david.spr...@alexanderlynn.co.uk] Sent: Thursday, December 05, 2002 11:19 AM To: EMC-PSTC Subject: Vehicle Mounted PCB's Dear group, A customer has been asked to redesign a board to stop it malfunctioning due to vibration, temperature and radio interference. They have been given a control PCB which they are told is the main culprit for the malfunctions. They circuit is mounted in an armoured vehicle as part of a security system which sprays bank notes with red ink when it believes a robbery is taking place. Apparently it sprays ink if it gets too hot, too cold, gets bumped, or if a radio or mobile phone is operated too close to it. The bad news is that this is on the market and being used by security firms within the UK and mainland Europe, with no real evidence of previous compliance with anything. Should this comply with any of Vehicle directive requirements? Are there any peculiar EMC requirements other than the usual 61000 series? What standard is likely to cover this device for use in vehicles? Although they haven't asked, what would be the most appropriate standard to cover safety requirements for this device. (Although is runs of only 12V, I am concerned about a fault causing a short across the battery, for example)? There was mention of selling it in the US too. If any has thoughts on what such a device should comply with there, all comments would be gratefully received. If you are thinking of writing back and suggesting the device be thrown in the bin, then I'm sorry to say that someone else has beaten you to it. Best regards, David Sproul,
Re: Vehicle Mounted PCB's
never mind throwing it in the bin. the neat trick was somebody got paid for the design work!!! Sounds like you may want to begin again from basic principles. Don't tell em, but just copy the mounting and connection details and everything else can be a clean sweep. Good Luck, great story. Best Regards Ted Rook, Console Engineering, ext 4659 Please note our new location and phone numbers: Crest Audio Inc, 16-00 Pollitt Drive Fair Lawn, NJ 07410 USA 201 475 4600 telephone receptionist, 8.30 - 5 pm EST. 201 475 4659 direct line w/voice mail, 24 hrs. 201 475 4677 fax, 24 hrs. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Vehicle Mounted PCB's
David, my suggestion is to determine which is the worst case EMC environment - the applicable standards or the actual environment - and design for that. We had a similar problem with a particular CCTV installation. The CCTV rf immunity standard specifies 10 V/m; however, the guard watching the CCTV monitor was using a hand held radio that produced a field much higher and the interference was unacceptable to the customer. We had to add fixes to increase the immunity level far beyond what the standard required. You may have a similar problem. Good luck. Richard Woods Sensormatic Electronics Tyco International -Original Message- From: David Sproul [mailto:david.spr...@alexanderlynn.co.uk] Sent: Thursday, December 05, 2002 2:19 PM To: EMC-PSTC Subject: Vehicle Mounted PCB's Dear group, A customer has been asked to redesign a board to stop it malfunctioning due to vibration, temperature and radio interference. They have been given a control PCB which they are told is the main culprit for the malfunctions. They circuit is mounted in an armoured vehicle as part of a security system which sprays bank notes with red ink when it believes a robbery is taking place. Apparently it sprays ink if it gets too hot, too cold, gets bumped, or if a radio or mobile phone is operated too close to it. The bad news is that this is on the market and being used by security firms within the UK and mainland Europe, with no real evidence of previous compliance with anything. Should this comply with any of Vehicle directive requirements? Are there any peculiar EMC requirements other than the usual 61000 series? What standard is likely to cover this device for use in vehicles? Although they haven't asked, what would be the most appropriate standard to cover safety requirements for this device. (Although is runs of only 12V, I am concerned about a fault causing a short across the battery, for example)? There was mention of selling it in the US too. If any has thoughts on what such a device should comply with there, all comments would be gratefully received. If you are thinking of writing back and suggesting the device be thrown in the bin, then I'm sorry to say that someone else has beaten you to it. Best regards, David Sproul,
