RE: BSMI Test Data Expiration

The situation has changed considerably. See the email attachment from dh...@approvalspecialists.com on March 7. -Original Message- From: Pittman, Bud [mailto:bpitt...@lsil.com] Sent: Monday, March 11, 2002 12:54 PM To: 'Collins, Jeffrey'; 'emc-p

RE: IEEE C37.90.1-1989

Russ, Looks like going to a test lab that tests telecom equipment to the surge and fast transients requirements would be your best bet. The test labs should be familiar with GR1089_4.5.10 (lightning surge), FCC Part 68_68.302(d) (power line surge), and IEC 61000-4-4 testing (fast transient) and t

Re: web location of ADS-37 Army standard

I can do better. I can send you a copy. Interested? -- >From: >To: emc-p...@ieee.org >Subject: web location of ADS-37 Army standard >Date: Mon, Mar 11, 2002, 2:38 PM > > > I have spent a few minutes searching for an Army standard ADS-37 dated May > 28, 1996 with no luck ... could anyo

RE: web location of ADS-37 Army standard

Susan, Try this site. It has worked well for me before. http://astimage.daps.dla.mil/quicksearch/ Rocky -)-(- Kenneth P. Gonzalez Intergraph Federal Hardware Solutions 170 Graphics Drive Madison, Alabama, USA 35758 phone (256) 730-2131 fax (256)730-2424 kpgon...@ingr.com -Orig

Estonia RTTE

Information on the implementation of the RTTE in Estonia can be found at http://web.sa.ee/index_eng.php Richard Woods Sensormatic Electronics Tyco International --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc dis

RE: BSMI Test Data Expiration

Hello: As far as BSMI data, the time period varies. Last year my lab was audited by the BSMI because I submitted data over six months old. When the auditor from Taiwan was here he said that they would not accept data over 1 year old and six month old data would be questionable. In my ca

web location of ADS-37 Army standard

I have spent a few minutes searching for an Army standard ADS-37 dated May 28, 1996 with no luck ... could anyone here point me to a web site to get access to this document? Thanks, Susan Beard --- This message is from the IEEE EMC Society Product Safety

IEEE C37.90.1-1989

Please help! I have a requirement to test a product in accordance with IEEE C37.90.1-1989 "IEEE Standard Surge Withstand Capability (SWC) Tests for Protective Relays and Relay Systems". Basically it is a Fast Burst Transient Test & a oscillatory wave test. I am not at all familiar with this

RE: BSMI Test Data Expiration

Hello Group, I am researching an issue with the BSMI standards regarding Information Technology equipment. Does anyone know how long the test data is valid before you can't submit it to BSMI for certification? Be advised our test data was taken with the appropriate limits, documentation and at a

Oops! 72/23/EEC?

One of our OEM customers called me this morning with a question. It seems that one of our European Union Declarations of Conformity listed the Low Voltage Directive as 72/23/EEC, while others had listed 73/23/EEC. I replied that I was fairly certain that 73/23/EEC was correct, but would check it

RE: Multiple power sources

There's another problem with batteries. What do the local authorities require? Some years ago, the firm for which I worked made a residential burglar alarm circuit with back-up battery power. However, we could not include the batteries in California, because they were too small to meet that stat

RE: Listing for the EMC directive & R&TTE Directive

Hi Folks In repect of John Mowbray's message, please note the URL also contains an updated list of R&TTE Directive standards. John Allen. -Original Message- From: Mowbray, John H [mailto:jm134...@exchange.canada.ncr.com] Sent: 11 March 2002 13:10 To: 'emc-p...@ieee.org' Subject: Listing

Listing for the EMC directive

Below is the URL of the OJ with the latest listing of standards for the EMC and Pressure Vessels Directives. http://europa.eu.int/eur-lex/en/oj/2002/c_06220020309en.html John Mowbray NCR Canada --- This message is from the IEEE EMC Society Product Saf

RE: Electric field radiation from rf currents

As i remember the factor L (cable length) in the equation is an simplification of the real value sin(L). As one may remember , sin(L)=L for L very small. As the formula was meant for small dipoles, that is close to correct. I remember also that already L in sinus(L) was simplified from a factor

Re: Electric field radiation from rf currents

Ken, Um, my apologies, I typed too fast and read too little. > E (V/m) = 1.26 10^-4 (f*L*Icm) > > In this equation, f is frequency in MHz, L is cable length in meters, and > Icm is current in milliamperes. If f is in MHz, and Icm is in mA, then the constant should be OK as it is. Regarding You sa

Re: Electric field radiation from rf currents

I believe the original equation posted by Mr. Armstrong had numerically taken into account the 1/r factor. At least it works out right if you assume that the 1.26 e-4 part derives from 4 pi * 1e-7 Henry/m, the permeability of free space. My problem was the assumption implicit in the equation th

Re: Electric field radiation from rf currents

Ken, The 1/r term is missing from that equation, I belive that it was factor into the constant errornously. The constant should be 1.26 e-7. :-) The equation for the worst case (with ground plane reflection) commom mode current radiating from a 'electriaclly short' radiating element ( Herzian di