2007 IEEE Symposium on Product Compliance Engineering: Paper submittal deadline extended

Greetings All, The 2007 IEEE Symposium on Product Compliance Engineering deadline to present has been extended. The deadline for paper topics and intent to present HAS BEEN EXTENDED to 1 June 2007. Details on the Call for Papers and a flyer can be found at

CBEMA/ESC5 document

Folks, I'm looking for a document of CBEMA/ESC5, "Limits and Methods of Measurement of Electromagnetic Emanations from Electronic Data Processing and Office Equipment", 20 May 1977. Please teach me where to obtain it. Thank you. Yoshinori OHASHI @Kitagawa Industories, JAPAN - This message is

RE: Pre-selector trouble? New info

Problem solved. The SA told us what was wrong, I guess because the problem finally became steady-state enough or happened at just the right time for the self-diagnostics to catch it. Got an SA error message saying to check the HORZ signal connection between the SA and the preselector. One coax c

RE: Pre-selector trouble? New info

If you feel it is a test setup problem, it might be best to run this thing in a manual mode instead of relying on the software. Regards, -doug From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Jim Eichner Sent: Monday, May 14, 2007 2:50 PM To: EMC PSTC Subject: RE: Pre-se

RE: Pre-selector trouble? New info

We're running the UL EMC software package. Here are 2 new clues to the puzzle: 1. If I go into the Measurement Setup editing screen and change the pre-selector attenuation to Bypass the discontinuities go away. 2. The 14MHz spacing of the discontinuities becomes 17MHz if I change the # of segm

RE: Pre-selector trouble?

Hi Jim, It is likely that you have two sources of RF noise. The emission you are seeing the sum of both. I believe one is narrowband the other is broadband. The broadband could be from a number of sources but is usually not too difficult to suppress. The trick is to identify all the sources. I

Re: telecom safety

On 5/9/2007, Peter Tarver wrote: If you had an opportunity to attend a 45 min. presentation on the safety of telecom as relates to 60950-x, what would you most want to have included? Hi Pete: I agree with Peter Merguerian that the classification of TNV-1, TNV-2, and TNV-3 circuits would be

Re: Pre-selector trouble?

In message , dated Mon, 14 May 2007, Jim Eichner writes: >I suspect our aging HP85685A pre-selector, based on the nature of the >issue we're seeing, and on its history of unreliable operation. Can you do a measurement without using the pre-selector, increasing the SA input attenuation to pre

Re: gas fired heaters

Pete, It's still the Machinery Directive you need to be concerned with. The relevant standard is EN 746 - industrial thermoprocessing. If you are worried about the Gas Appliances Directive, note that this does not apply to process heating equipment. Exclusion from the ATEX Directive is less cl

Re: Pre-selector trouble?

And if you push the bypass button?? the problem goes away? I've seen similar but it was another manufacturer. Jim Eichner wrote: We're running a radiated scan in the 30-200MHz range on a power conversion product that has broadband noise throughout. The data is showing evenly spaced discontinuiti

Pre-selector trouble?

We're running a radiated scan in the 30-200MHz range on a power conversion product that has broadband noise throughout. The data is showing evenly spaced discontinuities at 44MHz, 58MHz, 72MHz, and 86MHz. There may be others at higher frequency but if so they are subtle. By "discontinuity" I mean

Re: Question on Magnetic Strength and Human Exposure.

In light of recent discussions concerning pacemaker deactivation, I wonder if the experimenter attached the device to the subject with a magnet? : ) Pat Lawler EMC Engineer SL Power Electronics Corp. John Woodgate wrote on 05/12/2007 11:25:16 PM: > In message <380-22007561222391...@earthlink.n

gas fired heaters

PSNet, Altho I have been looking at machinery issues for some time I now have an opportunity to help with a CE marking evaluation for a process machine which will include a gas fired heater which will provide hot air to the process. What input do you have as to the

RE: Has China changed RoHS packaging requirements ?

Peter, >From the Q&A to/from the MII at the Oct-2006 China RoHS conference hosted by the AeA: 27 Q. Is the material identified required only on the outer product packaging? In other words, is the material identification NOT required on the transportation packaging? December 2006 FAQ Standards Q/

RE: Transmission line modeling

Richard, As with all modeling methods the choice of step size is the key to convergence to credible results. From my experience, unless the computer runtime is very large, running the simulation with decreasing step size and watching the difference between runs until a reasonable differ

Re: IEEE EMC Mini-Symposium tomorrow (Tuesday) Holiday Inn, Itasca, IL

This Tuesday, May 15 is our annual Chicago Chapter IEEE EMC Mini-Symposium. Held at the Holiday Inn, Itasca, here is the link for the detailed information. http://.emcchicago.org or http://www.ewh.ieee.org/soc/emcs/chicago/ We hope to see you there! Sincerely, Frank Krozel Chairman, 200

Re: Transmission line modeling

In message <200705140347.l4e3lrr8027...@hormel9.ieee.org>, dated Sun, 13 May 2007, Richard Georgerian writes: >Since this is an iterative process to calculate the voltages and >charges, the larger the area and smaller the step sizes will increase >the time to convergence. But how do I know wha