Re: Generic industrial EMC standards

generated document that never had an IEC equivalent. Only insofar as CENELEC first persuaded IEC to produce Generic Standards, and then resolved to adopt them. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: NEW EMC Standards

and has not been seen or voted upon by national committees. UK has considered it and is not convinced that the gap between 1 and 1.4 GHz is justified. No objections, so far, to a range of 1 to 2 GHz continuous at 3 V/m, and 1 V/m from 2 to 2.7 GHz. -- Regards, John Woodgate, OOO - Own Opinions Only

Re: NEW EMC Standards

afford it. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: antennas

constructions are not subject to the EMC Directive. Commercial products are so subject. Amateur constructors should certainly strive to make their constructions electrically safe! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: antennas

mechanical requirements. This might be similar in class to flagpoles, overhead signs or light poles. Probably. In the final analysis, local government has powers over all unsafe structures. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: Product standard for telescope

again!! ;-)). JC retired last March. If you don't want to ask me, ask Geraldine Salt, who has taken over from John, or Ashrafi Asghar ('Ash') if it's a low- frequency (mainly 61000-3-2, -3, -11 or -12) matter. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: antennas

on antennas, overt or implied, in licence conditions, which vary from country to country. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts

Re: Hi-Pot testing

between all primary circuits and all secondary circuits. There is no way this should fire the gas tubes. You haven't grounded the cold ends of the gas tubes, by any chance? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: Product standard for telescope

. So I don't see that EN61326 is ruled out. I work from home, so do I have to have all my electronics test gear tested to, say, EN 60065 rather than EN 61010-1? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Product standard for telescope

instrument, so IEC/EN 61326 would seem to be appropriate. But if you find it is not, you could use the Generic Standards (IEC/EN 61000-6 Parts). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: fuse replacement markings

why the upper bound is not increased. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE

Re: fuse replacement markings

them.  Also, the upper limit of 6.3A for IEC 60127 fuses is far too limiting for certain types of IT equipment (some telecomms equipment use DC rated fuses in the hundreds of amps range, for example). Why did you post your message five times? -- Regards, John Woodgate, OOO - Own

Re: fuse replacement markings

that the code specified in IEC 60127 shall be used. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: fuse replacement markings

: a) If the fuse never opens, delete it and mark it as a cost- improvement; b) normally, it is so easy to mark the fuse spec, like 'T 1 A H', that it would not be worth asking for a waiver. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: Comb Filter

can't tell you of any suppliers, but since this is a common problem, it would be surprising if nothing is available commercially. There are two ways to do this: either split the signal into two, delay one by 20 ms and re-combine them, and use a DSP chip to achieve the same effect. -- Regards, John

Re: Insertion loss of an injection probe

, not a 50 ohm system? A lossless V-I converter would convert 100 dB(uV) to 66 dB(uA) through a 50 ohm resistor. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: CDMA Product Approvals

. The theory in this area was far in advance of the hardware capable of implementing it. Some of the information may still be classified. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: IE C60601-1 table 16

, and 60601-1 hasn't been updated yet to take the new edition into account. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: IE C60601-1 table 16

with an 'agency' on this issue: it's either not their responsibility or the European Directives are not involved. But if the *regulatory authorities* became involved, they would certainly want to know if you held the standards and had ready access to them. -- Regards, John Woodgate, OOO - Own Opinions

Re: VDE - EN/HD cross reference

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

Re: IE C60601-1 table 16

that you have copies of all the standards *you* have applied. Note *you* have applied, because the due diligence applies to the manufacturer, not to any test house that he might choose to use. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: VDE - EN/HD cross reference

. This even extends, AFAIK, to the code for the coloured threads that are included in cables to identify the manufacturer. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: 94V-0 question

. You might consider polyethylene terephthalate. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: Thanks to EMC-PSTC List!!

enegineering, with a thesis about reduction of EMI in switched mode power supplies. Congratulations. Not being afraid, or too proud, to ask, is the best way to success. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Power line current injection

systems for equipment with rated current greater than 16 A This is an IEC report, and CENELEC does not adopt IEC reports as ENs. It is being replaced by IEC 61000-3-12, which IS a proper standard. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: PCB line spacing for NEBS 1089 1st Level lightning test.

on differential pairs?  Should the voltage be calculated at protection device's clamping voltage?  How does the formula change for interlayer vs. top/bottom layer? Is there any good reference material?   IEC 60664 (multi-part). -- Regards, John Woodgate, OOO - Own

Re: Power line current injection

the European systems on which the standard is based, and may be more tolerant of harmonics. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts

Re: PC noise and a standards question

product standard would I use to specify the EMC tests to run? I can only believe that this is light industrial equipment. It's test equipment. IEC/EN61326. And 61010-1 for safety. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: IR LED

, some of which have been adopted as ENs as well. IEC 61147 IEC 61603 (multi-part) IEC 61920 -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news

Re: Clayton Pauls - Intro to EMC - an error or two? for those that have the text

6.4 he presents a table of skin depth for copper, but then in question 6.2 he asks for the skin depth of steel - and the numbers for the skin depth are the same. At the same frequency? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: Who sign the DoC?

. Maybe that what Boots do, but I don't think it could be a widely-used procedure. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me

Re: EN60512-23-3

standard. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: Lightning Surge Characterization/Standards THANKS

, of course, NOT any of the others. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: Who sign the DoC?

*production units* met the same requirements as the test sample. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: Lightning Surge Characterization/Standards THANKS

of the group, but I don't recall any post recently that indicates a female source. Of course, your name is epicene -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: X and Y caps

fail shorted. This would be acceptable for line-to-line. No, you've got them the wrong way round. X from line to neutral (or line) and Y from line to ground. It matters! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Hipot question

run a hipot test am I allowed to use 2121 VDC rather than 1500 VAC? Due to the 0.047 uF X caps the AC hipot current is somewhat high. You are testing a product to a standard, but you don't have a copy of the standard? That is really unwise! -- Regards, John Woodgate, OOO - Own Opinions Only

Re: Lightning Surge Characterization/Standards

of the committee officers and the working groups. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: Declaration of Conformity by 3rd Party

produces a document that appears to be a DOC, with intent to deceive, commits an offence in most European countries. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE

Re: pulse modulation in reverb chambers

message said. Was that a typo? Yes, it was a typo, sorry. Speed of light 1 ns a foot. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts

Re: EN 50083-2

(as opposed to pre-compliance) is proving that they do what the standard says they shall. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me

Re: Railway Apps

-3-2. Can someone put me in the right direction? Are they not detailed in the standards themselves? EN 50121 as such does not exist as a document. It is a multi-part standard, and I expect you need EN 50121-1, the 'General' part. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: Model for CAT 5 cable

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

Re: Model for CAT 5 cable

capacitance and measure the resonance frequency, but the Q may be low. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: IEC 1000-4-4

of 2004-07-01. The DOW is the date of withdrawal of the previous version; in this case, presumably, the original standard plus amendment 1. The reference to '1000-4-4' instead of '61000-4-4' suggests that there may be other problems. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: Measurement uncertainties for voltage measurement

significant figures? If this is DC, the only obscure source of uncertainty that springs to mind is thermoelectric voltage, which may be tens of microvolts. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: DC PSU for conducted immunity testing to EN61000-4-6

? What effect did the power supply have on the immunity? It's difficult to know with no data what a simple analog power supply would do. One would certainly need to know that in order to determine whether a filter was feasible and the optimum solution. -- Regards, John Woodgate, OOO - Own Opinions

Re:

meaning of 'harmonization'. I suspect you mean it has not been *notified* in the Official Journal yet. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: GFI Question Follow-up

connection between tripping and dampness or extreme temperature? These intermittent faults that occur in groups are often due to environmental effects. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: Arcing Sparking

with a noise, Skr. sph?rj to crackle, to thunder. Cf. {Speak}.] 1. A small particle of fire or ignited substance which is emitted by a body in combustion. Yes. An arc that persists is a 'sustained arc'. It needs a control mechanism to sustain it. When the spark speaks, the arc harks.(;-) -- Regards, John

Re: More profound than a joke

on the information provided by the manufacturer? A risk assessment, but not a rational one. Being male, he had zero risk of harming a baby inside him, but he could possibly harm the unborn baby of his Significant Other. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: need shielded cable

-sleeving or silicone-rubber sleeving. That would probably be good enough for at least initial trials. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: IEC 60320 connector and cable

) there is no *requirement* to supply a lead with a mains plug. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message

Re: fan question

, a single fault had such progressive effects as to effectively put the product beyond repair, even though it remained safe. Or if a two-fault condition could persist undetected until some rare operation on the equipment was performed, when a serious hazard would arise. -- Regards, John Woodgate, OOO

Re: IEC 60320 connector and cable

are also different. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: fan question

stringent test. If you took the result of the ordeal as final, with no appeal, then indeed you would be gold-plating the test. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: fan question

, unless they restrict their activity to *advising* on such a situation. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: need shielded cable

, the cable manufacturer *may* be prepared to make a 5-core version for you. The smaller the manufacturer, in general, the more accommodating they are. Have you looked for six-core individually-shielded cables? Of course, seven cores would lay-up without a filler. -- Regards, John Woodgate, OOO

Re: earthline choke

milliseconds). The impedance requirement (applied to the whole primary supply) is usually more difficult to meet, being typically 0.1 ohm, including the mains cable, fuse and internal wiring, but assuming a zero-impedance short- circuit between (live + neutral) and earth. -- Regards, John Woodgate, OOO

Re: LCD Displays and Safety

on information from LCD suppliers) being that there is no chemical hazard present. If you want any further details, let me know and I can probably recover something from my files. These are the results of the consideration, i.e. that the fragility of the LCD does not result in a hazard. -- Regards, John

Re: fuse replacement markings

, let's not go over old ground again. It was not I who re-opened the subject but Peter Tarver. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy

Re: fuse replacement markings

inconsistent decisions. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society

Re: Q. on Res Bandwith performace traceabiity

think you have the wrong standard! Yes, typo, sorry. IEC 60027-3. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: Q. on Res Bandwith performace traceabiity

. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

Re: Q. on Res Bandwith performace traceabiity

, as in this case. Abbreviations are 'words' in our technical language, and using the wrong word will obviously cause giraffe, no, I mean confusion. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: Wire question

I read in !emc-pstc that drcuthb...@micron.com wrote (in E6F64B42266D6 54b80a0f7f4b98212a5cf1...@ntxboimbx03.micron.com) about 'Wire question' on Tue, 2 Sep 2003: I'm wiring up a power strip that must comply with EN60010 I don't think there is any such standard. Typo? -- Regards, John Woodgate

Re: self blinking LEDs as EMI sources WAS: LED lamps

for the 'editorial' or perhaps it is just the readers forum page? Ah, well, maybe you need to know that the story is about 150 years old. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: Window of Uncertainty

of the following UKAS document suggests what to do in instances of this nature. http://www.ukas.com/pdfs/Lab34.pdf LAB34 is a very stringent document. It may well not be supported by other regulatory authorities. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: CB certification - IEC60950

, as you can tell by the two-digit number. So it won't ever be mentioned on a CB certificate. But any certificate that refers to the 1991 edition is probably not valid anyway. You need one that refers to the current IEC60950-1, which was published 2 years ago. -- Regards, John Woodgate, OOO - Own

Re: European conductor ampacity table

for US requirements from the NEC, but I need to find European requirements, and if they vary by country. The back pages of BS 7671, for UK. The term 'ampacity' is not used in Europe. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: ETSI new rules for 2004

Directive by simply accepting the returned consumer electronics, and shipping boatloads of them to one of the rural landfills here in Georgia. Georgia USA or Georgia, former USSR? The latter may be cheaper but more dangerous. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: Denmark AC outlets

spread beyond the boarders of Denmark. Some of those Danish boarders came to board in Britain about 1400 years ago, of course. That's probably why we have a special grounding type plug and socket outlet, everywhere. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: Regulatory Plan

in the various markets where they are sold. Very often, people enquire here, and someone often knows the answers. Sometimes, you get a multiple choice of answers. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Correct label for DC input/output port

for example) as the unit will not work off an external DC supply alone ( it will only start up from the mains). I'd welcome suggestions as to the best way to label the socket. Add the exclamation mark symbol, which means 'Refer to the instructions'. -- Regards, John Woodgate, OOO - Own

Re: electrochemical potentials

, but by no means guarantees acceptable results. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE

Re: Luggage Loader

but bulls.(;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: Add a new member

before me? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: Luggage Loader

the DOC with any confidence. Someone of some higher authority will have to sign off on that I'm sure. At least I would want them to. Indeed. Maybe you could get an archbishop [insert alternative senior cleric of your choice] to refer it up. (;-) -- Regards, John Woodgate, OOO - Own Opinions

Re: Luggage Loader

that, because your radiation source would breach spectrum management regulations. You may well need to go to a test house which has a big chamber. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: NEMA ratings

life. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: NEMA ratings

standard IEC 60529. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: Product Safety Society By-Laws

. ...which will be mailed no later than January 35th. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message

Re: SV: Who is responsible?

on the subject. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: Operation of a Radio Device in the 88-108MHz Frequency Range

in others. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: SV: Who is responsible?

this question raised in 2003. It was very commonly asked several years ago. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E

Re: CISPR 16

your breath. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: Who is responsible?

well decide to take civil action against B, but A signed the DOC, and ALL the law requires is that it be true. If it isn't, the signatory is responsible. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: CEN standard scopes/abstracts

issue' here: without access to the scope, you are buying a pig in a poke[1] unless a friendly consultant can tell you what you need to know. (Advt.) [1] Quaint British English expression referring to the sale of a cat or rat in a bag, alleged to be a 'fine piglet', at country fairs. -- Regards, John

Re: SV: Security and Alarm Systems

). At least heat and smoke detectors (transition period to 2005), but the fire alarm panel / central unit is still many years away. Are you sure it's likely to be delayed that long? The essential standard series is EN54 (published by CEN) -- Regards, John Woodgate, OOO - Own Opinions Only

Re: CE Marking of Shipping Cartons

the shipment on the grounds that installation instructions are not provided. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me

Re: CE Marking of Shipping Cartons

to seek some other assurance of 'free circulation' status. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message

Re: Conducted immunity of a USB port

. Cable manufacturers will make anything you want for big enough quantities. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E

Re: SV: Standards process

+Centre/Primer+on+s tand ards/Default.htm See what I mean about the patience pill! And I'm quite surprised that it's free. CENELEC is not very generously funded. Maybe the Commission came up with a few surplus Euros. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: Power adaptor to Australia

, is the external power adaptor need to have both C-tick and SAA mark? You may well find this URL helpful. Be careful if it has a word-wrap.   http://www.aca.gov.au/consumer_info/fact_sheets/industry_fact_sheets/fsi11.htm -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: Standards process

in the above processes. Most of the work is done by experts from industry, who do generally know what they are talking about, but often can't write it clearly enough, being engineers and not literary scholars. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: IEC and EN standard relationships

to IEC standards   [snip] So what I'd really like is to se the continuation of this tread, but with greater information input from outside of Europe. I agree entirely with that. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: IEC and EN standard relationships

to the CENELEC standard, some don't. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: System test PCs - Are we cops?

that the OP was more concerned about companies getting a competitive advantage by ignoring EMC issues, and in that case, it is a management, not an engineering decision, whether to trigger legal action by reporting to the regulator. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: IEC and EN standard relationships

:2001 is the addition of European cable references, such as HO3 VV-F, in clause 3.2.5.1 on AC power supply cords. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE

Re: IEC and EN standard relationships

-- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

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