RE: EN 60601-1-2/ EN 55022: 1998

EN 60601-1-2:2001 was just published in the OJ. The CENELEC web site has not been updated yet. Best Regards, Jim Jim Conrad, Convenor IEC SC62A/MT23 P.O. Box 25 Hamilton, MA 01936 U.S.A. E-mail: jc...@shore.net Phone: 978-468-3909 FAX: 978-468-1034 From: owner-emc-p

RE: W32.Elkern removal tools

Do you know if this bug came through the IEEE fire wall? Any more info available? I went to the F-sure site but was unsure if I should download the removal tool. Anyone use it yet? Jim Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org

RE: W32.Elkern removal tools

Do you know if this bug came through the IEEE fire wall? Any more info available? I went to the F-sure site but was unsure if I should download the removal tool. Anyone use it yet? Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org

RE: Medical Devices Environmental Requirements

Have you checked 60601-1? Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Naftali Shani Sent: Tuesday, November 05, 2002 1:27 PM To: 'Mandel, Joel'; 'emc-p...@majordomo.ieee.org' Subject: RE: Medical Devices

RE: RFI/EMI requirements for the automotive industry

Hi Paul, Take a look at ISO 7637-1 for 12V systems and -2 for 24V vehicles. Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Denomme, Paul S. Sent: Tuesday, October 29, 2002 9:16 AM To: 'emc-p...@majordomo.ieee.org'

RE: RTCA document vs. IEC 60601-1-02

To: Jim Conrad; m.bushn...@ieee.org; emc-p...@majordomo.ieee.org Cc: Jim Conrad Subject: Re: RTCA document vs. IEC 60601-1-02 I think you mean 25 dBuV/m, but regardless of the number, it is not a direct comparison to CISPR because a) the DO-160 EUT-antenna separation is 1 meter, not 3 or 10 meters

RE: RTCA document vs. IEC 60601-1-02

I'm not sure if DO-199 or 233 has EMC requirements but I am very interested if you come with any. IEC 62A/MT 23 is in the process of amending 60601-1-2 for medical equipment used in the aircraft environment. We have based our requirements on the environment specified in DO-160. In general,

RE: RADIATED IMMUNITY TESTING ABOVE 1GHz

John Woodgate wrote: There was a BIG argument between experts over the test signal to be used for assessing immunity to mobile phone emissions. CENELEC people prematurely chose the keyed-carrier signal, but it presents inconvenience in both generation and measurement. IEC experts (some from

RE: EN 60601-1-2

happen in November. Best Regards, Jim Jim Conrad, Convenor IEC SC62A/MT23 P.O. Box 25 Hamilton, MA 01936 U.S.A. E-mail: jc...@shore.net Phone: 978-468-3909 FAX: 978-468-1034 -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org

RE: Medical Wrist Device and Cardiac Pacemakers

Hi Peter, I'm not sure what your wrist device does. Does it have electronics in it with clock frequencies over 9 kHz? Does it transmit a EMF? If the device is within CISPR limits then you should be OK for pacemakers. I think they are tested at 100 V/m. Some pacemakers have a magnetic switch

RE: SMPS EMC Emissions

Alex wrote: Do you think it is reasonable to specify in my power supply specification that the manufacturers SMPS should meet EN55022 Class B -6dB Yes. I would ask for 6 dB margin since measurement uncertainty for a typical conducted measurements system is 5.4 dB. You must also allow for

RE: Transmission line formula?

are in the area of w=l then use Zo=sqrt(L/C) where L is the inductance per unit length and C is the capacitance per unit length. Measure these on your HP impedance or network analyzer. This gets you very close. Good luck! Give me a call if you would like more info. Best Regards, Jim Jim Conrad

RE: Bonding to conductive plastic - best method??

Hi Chris, I would try a Silver loaded conductive epoxy or use SS self tapping screws. Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Chris Wells Sent: Friday, May 31, 2002 10:23 PM To: EMC-PSTC Discussion Group

RE: non 601 approved isolating component

Hi Ron, I think I am using the same part. Is it the isoloop part? That part is good for 2.5 kV for one minute. We plan to do humidity soak and dielectric tests to show that the basic insulation of the part is adequate for 601-1. I have also talked to the vendor to get the part UL2601 listed.

RE: Work in progress vs Date of Withdrawal

Hi Al, I do not know of a guide but it is usually stated in the directive what placing a product on the market means. It is my understanding that you can not ship(place on the market) anything into the EC that carries the CE mark after the date of withdrawal of a standard that is used to show

RE: SDR in the US

Hi Kim, 902-928 MHz is an Amateur Radio band in the US and I don't think it is available for general use. I am sending you an FCC publication entitled UNDERSTANDING THE FCC REGULATIONS FOR LOW-POWER, NON-LICENSED TRANSMITTERS. I hope it helps. Best regards, Jim -Original Message-

RE: Industrial Locations

Amund, I am curious why you included ISM in your list of industrial locations. ISM can be either class A or class B. I thought the distinction was made according to the mains power distribution system; CISPR 11, subclause 4.2. JIm -Original Message- From:

RE: Medical Device Emissions Limit?

Emissions Limit? I read in !emc-pstc that Jim Conrad jc...@shore.net wrote (in ncbbkfbmfdcdcgaccfbaaeimgmaa.jc...@shore.net) about 'Medical Device Emissions Limit?', on Tue, 12 Feb 2002: ESU = Electro Surgical Unit - also know as the Bovie knife As opposed to Bowie. Or the German version thereof

RE: Medical Device Emissions Limit?

...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of John Woodgate Sent: Monday, February 11, 2002 10:47 PM To: emc-p...@majordomo.ieee.org Subject: Re: Medical Device Emissions Limit? I read in !emc-pstc that Jim Conrad jc...@shore.net wrote (in ncbbkfbmfdcdcgaccfbageihgmaa.jc

RE: Medical Device Emissions Limit?

Hi Kevin, Hospitals are generally considered Class A. If the device will be used in the OR, you should also consider ESU testing even thought it is not specifically mentioned (at this time) in standards you mentioned below. Your customers in the OR will be real unhappy when the Bovie goes off

RE: IEC 60601-1-2 Second Edition

Hi Ned, I think everyone is asking the same question. You have received the correct interpretation from the FDA. The 2nd edition is effective as of 10-2001 and if you claim compliance with it on your 510k, the FDA will not come back and ask for more information regarding EMC. They are however

RE: noise immunity on mains powered equipment

Ken, I don't recall your original query but it sounds like you were asking about BCI testing requirements. I can answer for medical equipment. The 2nd ED of 60601-1-2 requires BCI testing of all patient connected cables. Best regards, Jim -Original Message- From:

RE: IEC 60601-1/EN 60601-1 Question

Hi Kaz, I agree with Jon. However there are battery standards that you may consider meeting if you plan on CE marking the battery so it can be imported and sold in Europe as an accessory to your device. I just went through this with a recent medical product I worked on. There are also

RE: EMC for cardio : which standard apply?

of the 2nd ED if you are going the standards route of compliance to the MDD. I hope this helps. Jim -Original Message- From: Paolo Peruzzi [mailto:paolo.peru...@esaote.com] Sent: Wednesday, January 09, 2002 2:53 AM To: Jim Conrad Cc: emc-p...@majordomo.ieee.org Subject: RE: EMC for cardio : which

RE: IEC 601-1 : Insulation between applied part and signal input

Hi Pierre, How is the skiing this year? Regarding your question, you need to look at the system standard, 60601-1-1, for interconnecting components of a medical electrical system. Generally, a computer does not meet the enclosure leakage requirements and thus requires some kind of an isolation

RE: Field Strength - Substitution Method

Sam, You should also consider the radiation may be from multiple sources on the EUT. Polarization of the source may not be the same at the substitution antenna. Try 0, 45, and 90 degree polarization of the bi-con. A tuned dipole would also give you better results as a bi-con has a very high

RE: -2dB margin

Hi George, I don't think the margin makes any difference in applying the 80/80 rule. If you have a series produced product you must apply the 80/80 rule using a sample size of not less than 5 and not more than 12 pieces. See Clause 11, Assessment of conformity of equipment, of CISPR 11: 1999.

RE: Enclosed OATS facilities in snow country

We plow the snow away from around the building. Unfortunately the building is up on a small rise but it does make it easy to get the snow line below the ground plane. Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of

RE: EMI guard bands

Cecil, We design our products for -10 dB limit, accept -8 dB for a lab prototype pre-production) and allow -6 dB for production units. We feel this is not conservative based on past history of measurement uncertainty and production variations. Jim -Original Message- From:

RE: emc for FDA

Brian, For medical use 60601-1-2. They prefer the 9-2001 version. Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of MCA Compliance Sent: Saturday, December 01, 2001 12:53 PM To: Emc-Pstc Post Cc: Brian McAuliffe

RE: FDA FCC

Jon, If you look at Sec. 18.101 Basis and purpose, part 18 only applies to medical equipment that emits electromagnetic energy on frequencies within the radio frequency spectrum in order to prevent harmful interference to authorized radio communication services. The Ultrasound equipment that I

RE: FDA FCC

Jon, Ultrasound equipment does us use RF directly to treat or diagnose patients. I don't believe Ultrasound equipment falls under part 18. The FDA is now recommending the use of IEC 60601-1-2; 2001 for EMC. Best regards, Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org

RE: ESD - time between successive discharges

Just to give you an idea of how we handled this in 60601-1-2, we said: The time between discharges shall have an initial value of 1 s. Longer time between discharges may be required in order to be able to distinguish between a response caused by a single discharge and a response caused by a

RE: Medical devices in Japan

Jim Conrad Conrad EMC Consulting P.O. Box 25 Hamilton, MA 01936 USA Phone: 978-468-3909 E-Mail: jc...@shore.net -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Nick Williams Sent: Tuesday, July 31, 2001 10:02 PM To: emc-p

RE: Test Equipment ...

Just to add to Tania’s comment, all medical electrical equipment is exempt from part 15. Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Tania Grant Sent: Wednesday, August 01, 2001 12:16 AM To: Doug McKean; EMC-PSTC

RE: EN 61000-4-2 ESD Requirements

Hi Santo, You didn't say what type of products you are making but for Medical Electrical Equipment complying with the 2nd ED of 60601-1-2 it will be 8 kV air and 6 kV contact. Best regards, Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org

RE: EN 55011 Fundamental ISM frequencies

everywhere else. Hope this helps. Best regards, Jim P.S. I hope the main return path for the ISM transmitter is not back through the power lines! Jim Conrad Conrad EMC Consulting P.O. Box 25 Hamilton, MA 01936 USA Phone: 978-468-3909 E-Mail: jc...@shore.net -Original Message- From

RE: Status of Frequency extension of EN 61000-4-3

FYI, IEC 60601-1-2: 2ED, EMC for Medical Electrical Equipment requires 3/10 V/m testing to 2.5 GHz! Best regards, Jim -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Pettit, Ghery Sent: Monday, June 18, 2001 11:19

RE: New Immunity/ESD Specs.

IEC 61000-4-2 (2001-04) Consolidated Edition 1.2 https://domino.iec.ch/webstore/webstore.nsf/all/3391D5E5625356F8C1256A3B001 1096C?OpenDocument – was just published by the IEC CO. Best regards, Jim -Original Message- From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On

RE: Medical Directive

I don't think my first reply went out. This a second try. Sorry Cyril. Best regards, Jim Cyril, Please see my answers to your questions below: -Original Message- From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org] On Behalf Of Binnom, Cyril A Sent: Friday, April

Re: HP684XA harmonics analyser software

Hi Chris, I spoke with Agilent in Rockaway a couple of weeks ago and they assured me they will be addressing A14 with a software update. That is the good news. However, it will not be ready for another 4 -6 months!!! Best regards, Jim Colgan, Chris wrote on 2/28/01 8:41 am: Hi all Does

Re: IEC 606010-1-2

: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Conrad P.O. Box 25 Hamilton, M.A. 01936 Phone: 978-468-3909 attachment: winmail.dat

RE: EN61000-3-2 Amendments.

as if the product was drawing 15A(not sure of this exact #). But essentially anything will pass now. You can purchase A14 on the IEC web site at www.iec.chThere is also a 75 watt exemption. Products less that 75 watts automatically comply. Best regards, Jim' Jim Conrad P.O. Box 25 Hamilton, MA

RE: EN61000-3-2 Amendments.

Yes, you can use the A14 for the January 1, 2001 compliance. Just be sure to add 61000-3-2 A14 to your DOC. Best regards, Jim Jim Conrad P.O. Box 25 Hamilton, MA 01936-0025 USA jc...@shore.net Phone #: 978-468-3909 FAX #: 978-468-3909 -Original Message- From: owner-emc-p

RE: EN 61000-3-3 Flicker Tests

for domestic purposes. However, as you mentioned, these standard are subject to change and my understanding is that both harmonics and flicker requirements will apply to all environments in the future. I hope this helps. Jim Jim Conrad P.O. Box 25 Hamilton, MA 01936-0025 USA jc...@shore.net Phone

RE: EN 61000-3-3 Flicker Tests

Hi Bruce, Your customer is correct. If the device is classified as a Class A (according to CISPR 11), you do not need to comply with flicker requirements. Jim Jim Conrad P.O. Box 25 Hamilton, MA 01936-0025 USA jc...@shore.net Phone #: 978-468-3909 FAX #: 978-468-3909 -Original