BNC connectors with integrated caps to ground
Thanks for the replies on my inquiry. Apparently there is no such BNC connector made, at least not yet, that crimps on the cable end. Panel or board mount is all that is available. Chet Summers Pelco 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: BNC connectors with integrated caps to ground
Chet, It is the panel-mount connector (board-mounted) connector that contains the capacitor. You can recognize these connectors by the metallic prongs that contact the inside surface of the panel when the connector is shoved through the panel. They are very common and can be found in most electronics catalogs. I will look for a specific part, but maybe not today. JIm Jim Knighten, Ph.D. Teradata, a Division of NCR http://www.ncr.com 17095 Via Del Campo San Diego, CA 92127 USA Tel: 858-485-2537 Fax: 858-485-3788 jim.knigh...@ncr.com -Original Message- From: Summers, Chet [mailto:csumm...@pelco.com] Sent: Wednesday, March 19, 2003 11:54 AM To: IEEE EMC Society listserver (E-mail) Subject:BNC connectors with integrated caps to ground Hello group, almost two weeks back there was a post discussion regarding grounding practices of Ethernet cables. Out of this discussion came a recommendation to use BNC connectors with integrated capacitors to ground. I am assuming the cable connector, not the panel mount connector, contains the caps. Can you recommend some tried and true manufacturers and preferred part numbers of these components? I'm looking for cable connected BNCs to fit RG58/59 and 174 coax. thank you, Chet Summers Pelco 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
BNC connectors with integrated caps to ground
Hello group, almost two weeks back there was a post discussion regarding grounding practices of Ethernet cables. Out of this discussion came a recommendation to use BNC connectors with integrated capacitors to ground. I am assuming the cable connector, not the panel mount connector, contains the caps. Can you recommend some tried and true manufacturers and preferred part numbers of these components? I'm looking for cable connected BNCs to fit RG58/59 and 174 coax. thank you, Chet Summers Pelco 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: antenna port conducted emissions
-Original Message- From: Low, Aaron S [mailto:aaron.s@lmco.com] Sent: Wednesday, March 19, 2003 7:44 AM To: emc-p...@majordomo.ieee.org Subject: antenna port conducted emissions Folks, I am interested in your opinions regarding antenna port conducted emissions (MIL-STD-461D CE106) on a spread spectrum/frequency hopping device. Is it practical to automatically measure (using a swept scan EMI receiver) emissions from such a device? I would think that when using spread spectrum and a swept scan receiver, the receiver has some large probability of missing the emissions caused by a particular harmonic when using swept scanning systems. The limit for CE106 (transmitters) is derived from the power of the fundamental (there is no fundamental, only a band of operation), how do you measure that power on the EMI receiver? Does anyone have any experience/advice they would be willing to part with? Thanks Aaron Low ps. I am relatively new to this field, so my question may seem very basic to many of you; please excuse me. Aaron: First question is are you sure you should be working to 461D? 461E came out 20 August 1999. Now, to address your technical situation. Yes, you do have a fundamental. Just because it's hopping doesn't mean it's not there. Granted, 461 CE06 (later CE106) originated in the era of non-hopping systems, and may address them better in a future revision, but it does say that your reference will be the peak power level of the fundamental. You can measure the peak power by using a spectrum analyzer in peak hold, using sufficient bandwidth to ensure the detector actually charges to the peak during the time that the fundament dwells in the SA resolution bandwidth. Sometimes you can sweep a small portion of spectrum, or you can go to zero span width and just sit at some frequency waiting for the fundamental to hop there. You may find that the fundamental amplitude varies across the hopping range, so you might need to disable the hopping and fix the fundamental to one or more specific frequencies. Remember when looking for harmonic content, the hop sizes will be n x the fundamental hop size. Probabability of intercept is a problem, and I usually scan very slowly and do several overlaid sweeps of the spectrum. Many of the transmitters that I see have a short duty cycle (like 7 uS on and 993 uS in standby), so this makes the signal acquisition even more challenging. Sometimes I set automated scans to run 16 hours overnight, or over a weekend. 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 Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis 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
antenna port conducted emissions
Folks, I am interested in your opinions regarding antenna port conducted emissions (MIL-STD-461D CE106) on a spread spectrum/frequency hopping device. Is it practical to automatically measure (using a swept scan EMI receiver) emissions from such a device? I would think that when using spread spectrum and a swept scan receiver, the receiver has some large probability of missing the emissions caused by a particular harmonic when using swept scanning systems. The limit for CE106 (transmitters) is derived from the power of the fundamental (there is no fundamental, only a band of operation), how do you measure that power on the EMI receiver? Does anyone have any experience/advice they would be willing to part with? Thanks Aaron Low ps. I am relatively new to this field, so my question may seem very basic to many of you; please excuse me. 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: Importing Bluetooth product into Egypt and Saudi Arabia
Kurt, Currently there is no regulation on Bluetooth enabled devices for Egypt. For Saudi Arabia, both local representative and in-country testing are required, the turn-around time is about 6 to 12 weeks, as for the cost, contact me off line if you are interested. Hope this helps. Jeff Kurt Fischer kurt.fisc...@hyperinterop.com wrote: Hello colleagues, I was wondering if anyone has any information on importing a Bluetooth portable product into Egypt and Saudi Arabia. Bluetooth is low-powered (less than +4 dBm)wireless technology. The device operates in the 2.4 GHz ISM band and uses FHSS technology. The product would already be approved to FCC and EU/ETSI test requirements. The info needed is: 1. What is the process? (how long in time? cost in dollars?) 2. Is in-country testing required? 3. Must there be a local agent? Thank you in advance for any information that you can provide. Regards to all, Kurt Kurt B. Fischer 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.co! m 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 _ Do you Yahoo!? Yahoo! Platinum http://rd.yahoo.com/pl tinum/evt=8162/*http://platinum.yahoo.com/splash.html - Watch CBS' NCAA March Madness, live on your desktop ht p://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html !
