close range EMI - article link
I have received some email from people that don't know where to find my Technical Tidbit this month as I forgot to mention it in the original email. The article is linked from the picture of the experimental setup at the bottom of the index page of http://emcesd.com which shows a cable, scope, and plastic bag with coins. Abstract: ESD events between small pieces of metal, such as coins, at low voltages produce intense EMI with bandwidths into the tens of gigahertz. The problem is much worse when an electronic device, such as a mobile phone, is immersed in the coins as often happens. Data is presented to show possible voltages induced into a mobile phone antenna by nearby small metal ESD events. RF front end damage to the receiver is a distinct possibility. (even though there is no direct contact with the ESD events) Doug -- ___ _ Doug Smith \ / ) P.O. Box 1457 = Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-( ) | o |Email: d...@dsmith.org \ _ /]\ _ / Website: http://www.dsmith.org This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc
RE: TUV has CTDP (like UL, Client Test Data program) ?
Well, you could probably ask them... AFAIK, they use the TMP, SMT, etc (see IECEE 01 through 04). Also, acceptance of mfr's test data can be based on the personal relationship that the agency evaluation engineer has with the company and its compliance professional(s). luck, Brian -Original Message- From: Israel Yeshurun [ mailto:israel.yeshu...@creo.com] Sent: Sunday, September 05, 2004 8:29 AM To: 'emc-p...@ieee.org' Subject: TUV has CTDP (like UL, Client Test Data program) ? Hi all Can someone tell if TUV Rhineland of North America, has a program equivalent to UL's "CTDP" - Client Test Data Program ? Thanks ! Israel Yeshurun. This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc
Re: Power Meter to read down to 10 kHz
Luke, After your message, I had to go to Agilent's website to check that out. At the time I researched this (admittedly, a few years ago), the lowest frequency they had was 100kHz. The sensor you mentioned is 9kHz to 6GHz, and the only one they have that goes below 100kHz. The dynamic range is much better than the R&S sensor I mentioned. http://we.home.agilent.com/USeng/nav/-536888370.0/pc.html The 4419B is an excellent power meter as well. Thanks for the info. Bob. Luke Turnbull wrote: We use Agilent "E-series" power meter probes. Power range from -60 to +20 dBm. They do make a version that goes from 10kHz to 18GHz. The equipment that we have is an E4419B Power meter with E9304A probes. Hope this helps, Luke Turnbull >>> Bob Richards 07/09/2004 02:52:04 >>> Derek, The only power meter/sensor combo that I know of that will measure down to 10kHz and -30 dBm is the Rohde & Schwarz NRVD (dual channel) and NRVS (single channel) with a NRV-Z51 sensor. The sensor has a range from -30dBm to +20dBm. Keep in mind that measuring at the bottom end of the sensor's range will take more time to settle, and you will need to zero the sensor often. There may be other model sensors from R&S that will work for you. You might try looking at Boonton. I think they hav! e some RF voltage sensors that may go down that low. The sampling-tee is also a good idea. You can also use a spectrum analyzer instead of a power meter to measure the power from the directional coupler. Bob Richards, NCT Square D. Derek Walton wrote: Hi Folks, I'm trying to improve my Conducted immunity test method when testing >from 10 kHz to around 200 kHz. The signal from the diredctional coupler is quite small, around -20dBm, and my current power meter sensor is on the limits of it's range. Can anyone suggest a power sensor for use with the HP 437B ideally, that can measure down to -30 dBm and at least 10 dBm, with a freq range of 10 kHz to 400 MHz? If no such sensor exists ( and I've not found one... ), can anyone suggest a power meter/sensor combination. I only need a single channel, but two channels would be OK too. Thanks, -- Derek N. Walton L F Research Po! plar Grove, IL 61065, USA This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc Bob Richards b...@toprudder.com http://www.toprudder.com This message is from the IEEE Product Safety Engineering Society emc-pstc dis! cussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html L! ist rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc
Re: Power Meter to read down to 10 kHz
We use Agilent "E-series" power meter probes. Power range from -60 to +20 dBm. They do make a version that goes from 10kHz to 18GHz. The equipment that we have is an E4419B Power meter with E9304A probes. Hope this helps, Luke Turnbull >>> Bob Richards 07/09/2004 02:52:04 >>> Derek, The only power meter/sensor combo that I know of that will measure down to 10kHz and -30 dBm is the Rohde & Schwarz NRVD (dual channel) and NRVS (single channel) with a NRV-Z51 sensor. The sensor has a range from -30dBm to +20dBm. Keep in mind that measuring at the bottom end of the sensor's range will take more time to settle, and you will need to zero the sensor often. There may be other model sensors from R&S that will work for you. You might try looking at Boonton. I think they have some RF voltage sensors that may go down that low. The sampling-tee is also a good idea. You can also use a spectrum analyzer instead of a power meter to measure the power from the directional coupler. Bob Richards, NCT Square D. Derek Walton wrote: Hi Folks, I'm trying to improve my Conducted immunity test method when testing >from 10 kHz to around 200 kHz. The signal from the diredctional coupler is quite small, around -20dBm, and my current power meter sensor is on the limits of it's range. Can anyone suggest a power sensor for use with the HP 437B ideally, that can measure down to -30 dBm and at least 10 dBm, with a freq range of 10 kHz to 400 MHz? If no such sensor exists ( and I've not found one... ), can anyone suggest a power meter/sensor combination. I only need a single channel, but two channels would be OK too. Thanks, -- Derek N. Walton L F Research Poplar Grove, IL 61065, USA This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc Bob Richards b...@toprudder.com http://www.toprudder.com This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.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://www.ieeecommunities.org/emc-pstc
