Re: C.O. Battery Voltages - EVERYWHERE
I believe that DT is the only carrier that uses -60Vdc CO's, but I think that it is only present in their older CO's. It's not that hard to meet the requirements though - just maintain 1mm (40th) creepage clearance between TNV-2 and SELV, GND, etc (up to your DC/DC's/opto-isolators/bridging caps) and make sure any bridging capacitors are physically large enough to have 1mm between the pads (Y rating is not required but anything smaller than a 1206 SMT cap is too small to maintain spacings). Voltage rating on the caps is important too, I guess - pick according to proper NEBS reliability derating. -And you may have to ensure that your DC/DC's are rated properly. Best Regards, Dave Heald - Original Message - From: Joe Finlayson jfinlay...@telica.com To: 'EMC PSTC' emc-p...@ieee.org; 'NEBS Newsgroup' n...@world.std.com Sent: Thursday, April 03, 2003 2:39 PM Subject: C.O. Battery Voltages - EVERYWHERE I'm interested in obtaining information on the percentage of C.O.'s worldwide that are utilizing -60VDC as their battery voltage. It is my understanding that a majority use -48VDC although some still use -60VDC. Any and all information/references would be helpful. If there are references that are country specific or carrier specific, that would be valuable information as well. Any charts/spreadsheets out there similar to the mains supply charts I've seen would be excellent. 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 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
CCC mark information
Hello all, I'm currently looking at the CCC product catalogue that lists products requiring CCC marking. (available at: http://www.typeapproval.com/cn/Docs/CPCS_Catalogue_of_Equipment.pdf) Does anyone know if the list is complete? If a product does not fall into one of the categories on the list, are there any generic standards/regulations that are applicable, or is the product simply exempted? Thank you in advance for your responses. Peter Horvat CAE Inc. EMC/Safety group 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Ukraine's standard certification
Hi, ICC in Chepstow, UK has a great deal of experience in Central Eastern Europe - you should contact Ian Jennings at ianjenni...@icc-uk.com. Best regards, Dave Wilson Compliance Engineering Consultant 650-625-2127 From: ext No-cheon,Park [mailto:hl2...@hananet.net] Sent: Wednesday, April 02, 2003 6:44 AM To: emc-p...@ieee.org Subject: Ukraine's standard certification Hi all, I want to know about Ukraine's standard certification procedure. It is EMC/Safety, radio and wire communication standard. And, Ukraine's standard certification wants to know possible test laboratory. No-cheon, Park
Ukraine's standard certification
Hi all, I want to know about Ukraine's standard certification procedure. It is EMC/Safety, radio and wire communication standard. And, Ukraine's standard certification wants to know possible test laboratory. No-cheon, Park
RE: SAR Testing
Hi Andrew, Many of the test labs that perform SAR testing for cellular handsets would be able to perform this test. Bluetooth operates at 2.4 GHz so probably SAR labs that have capability for IEEE 802.11b,g and North American Cellular (1900 MHz) could help you. Please contact me offline if you still have problem locating a lab. Regards, Kurt Kurt B. Fischer Bluetooth Qualification Body (BQB) Hyper Corporation 1279 Quarry Lane, Suite B Pleasanton, CA 94566-8499 Business: +1 (925) 462-9105 x 205 Business Fax: +1 (925) 280-7751 mailto:kurt.fisc...@hyperinterop.com http://www.hyperinterop.com From: Price, Andrew [mailto:andrew.p.pr...@baesystems.com] Sent: Thursday, April 03, 2003 2:20 AM To: Majordomo (E-mail); IEEE EMC-PSTC E-mail Forum (E-mail) Subject: SAR Testing Help needed. Has anyone carried out or know of anywhere that can carryout SAR testing for a bluetooth transmitter with a power 100mW to 500mW. Regards Andy Andrew Price Principal Development Engineer (EMC Specialist) BAE SYSTEMS Avionics A125 Christopher Martin Road Basildon, Essex SS14 3EL tel: +44 (0) 1268 883308 email: andrew.p.pr...@baesystems.com This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Field wiring solutions in the US.
Most of you guys are probably familiar with the field wiring requirements that ITE products must comply with. (mainly for DC powered units) When a unit does not comply and the terminal block is not suitable for field wiring than a manufacture has an option of using 6 leads (not a very favorable option but it is an option) or redesign of the power interface. A solution to this problem can be provided with an external box, which will be sold with the unit. The box clearly must comply with all the requirements of UL60950 (Terminal block suitable for filed wiring, electrical enclosure, access to Hazardous energies, etc.). Does any one know of connection boxes like that that are off the shelf and are UL approved for filed wiring? Any other ideas? Regards Ilan Ilan Cohen Technical Director, Safety Telecom Divisions I.T.L (PRODUCT TESTING) Ltd. 26 Hacharoshet St, POB 211, Or Yehuda, Israel. Tel 972-3-5339022, Fax 972-3-5339019 ico...@itl.co.il, website: http://www.itl.co.il 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Radiated immunity test costs.
Hi all, Can anyone share with me what they are paying for radiated immunity testing. 80 MHz to 1 GHz, as well as 100 MHz to 18 GHz up to 200 v/m. Please reply off line!!! Thanks, Derek.
Re: high current MIL-STD-461E CS101
As you are no doubt aware, Solar Electronics is the sole source supplier of CS01/CS101 injection transformers. They make two models, rated at 50 and 100 Amps. I expect you could use any transformer with the right current rating and turns ratio as an injection device over most of the CS101 range. But I don't think it is necessary. If you are a 150 Amp load on a 115 Volt circuit, the impedance of that circuit is so low it is difficult to imagine how any other load could generate several Volts of ripple. Given that CS101 now extends to 150 kHz, I could perhaps see performing the test from, say, 10 - 150 kHz, where bus inductance could cause some ripple, but where the bus impedance is milliohms this is a misapplied requirement. The design impact of building a brute force LCR filter at CS101 frequencies is considerable, and should only be undertaken to solve real, as opposed to specsmanship problems. If anyone has a problem with this line of reasoning, consider that such a heavy load almost certainly has a dedicated feeder straight from the generator. The shared bus impedance between this load and another one that could be causing the ripple is basically the generator itself and the few feet of wiring between the generator and the breaker panel. It is much more likely that this load, if it draws pulsed currents, is loading the generator itself and thus generating ripple than it being affected by other loads. For the exact same reasoning, a 50 uH LISN is inappropriate for measuring conducted emissions. The 5 uH model is more applicable. However, you can only measure emissions from 150 kHz on up with that model. That is fine, you just tailor the 10-150 kHz range into a current limit and measure per CE101 test method. I have done this several times on high current loads. If done correctly, it can save tens of pounds and considerable space in hauling pig iron filters around, which is important if the host platform flies. From: Low, Aaron S aaron.s@lmco.com Reply-To: Low, Aaron S aaron.s@lmco.com Date: Tue, 01 Apr 2003 10:23:21 -0500 To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Subject: high current MIL-STD-461E CS101 I would like to know if anyone out there has had any experience with running CS101 on very high pulsed current devices. Our EUT (class AB amplifier) draws 150 A (115 VAC 400 Hz). I would like to know what equipment and methods were used. On a related note, this equipment cannot be operated with the standard 50 uH LISN, but a 5 uH LISN cannot be used to measure below 100 kHz. Has anyone used the voltage probe method defined in the appendix of 461E? Thanks Aaron Aaron S. Low Systems Engineer Naval Electronics and Surveillance Systems EP5 D5 MD45 Syracuse, NY 13221-4840 Phone: (315) 456-1203Fax: (315) 456-0509 L --- 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
