SEMI -S2
Does anyone know of someone that can provide an evaluation of a product to this standard. I have a client that needs the evaluation done ASAP so he can ship a product. I am unfamiliar with this standard. Thanks, Charlie Bayhi (714) 367-0919
Re: Industrial Plug and Socket-outlet
Check UL 1950 Guidelines, 1.2.5.1-001 and -002. They define NEMA 1-15P, 5-15P and 5-20P as Type A. Everything else is Type B. These plugs are for the type of receptacles typically found in the home. I believe that CSA uses same concept. Regards, Charlie Bayhi
Re[2]: Ethernet Compliance
Vic Boersma had the following to say about Ethernet cabling (my comments have been added in parentheses. Ron Fotino __ Reply Separator _ Subject: Re: Ethernet Compliance Author: "Victor L. Boersma" <102126@compuserve.com> at !INTERNET List-Post: emc-pstc@listserv.ieee.org Date:5/28/96 10:33 PM You're asking an unaswerable question, in my opinion. (1) Many buildings are prewired and can't handle any more wire, you've got to make do with what is there, or make rewiring part of the contract. You're not likely going to be the lowest bidder on the job, if you do. (However, if this is true, the premise wiring is likely to be Cat. 3 which won't support 100Base-T. That means re-wiring becomes a necessity. Premise wiring with available drops is the absolute best way to go; if it hasn't been done yet and is part of the job, Cat. 5 is quite useful and not extremely expensive.) (2) If the people who do the wiring know what they are doing, you can have very good results using either coax or CAT 5. If the people doing the wiring don't know what they are doing, they are likely going to make a mess out of either. Believe me, I have seen people making a horrible mess out of either. (3) You have not mentionned running fiber (Fiber is extremely expensive compared to UTP.) (4) You have not mentionned doing a wireless distribution (Wireless is also very expensive, limited in coverage area, and not usable in every country/region.) I suggest you take a building distribution specialist group on to discuss this further. I have included a number of my friends of that persuasion in the distribution. Regards, Vic Boersma
Re: test lab in Spain
> >At 11:19 PM 5/28/96, you wrote: >>Good morning ? >>I am looking for telecommunication test lab in Spain and Swiss. >>Or agent which can do the telecommunication type approval procedure for >>me(our company). Because, it is very hard to get the certification >>for foreigners. So, someome who knows test lab or get some experience, >>please give some information for me. THANK YOU ! >> >> >>chan lee >>l...@sam.sam.co.kr >> >> >>Courtesy of RCIC >>http://uc.com/compliance_engineering/ >> >> >>Inchcape Testing Services is an International Testing lab that is capable >of testing for compliance either: > >Here for shipment to those places. > >or > >There at the Receiving location. > >For further information contact Barry Stangline in our Beaverton, OR office >at 503-626-6694. Or fax at 503-626-7328. We can send you certification >information or get you in contact with a lab in the areas you are looking at. > >Thanks >Holly Lungren >Technical Secretary >Inchcape Testing Services > >
Re: test lab in Spain
Find below the address of a Swiss Test Lab : Swiss Telecom PTT Research & Development Department FE 67 CH 3000 BERN 24 Switzerland Contact : Mr. MAAG Tel : +41-31-338.33.56 Fax : +41-31-338.51.74 Need a few days to find out for Spain. Regards, Edgard VANGEEL evang...@tornado.be
RE: Pack of CE Marks?
Alan Hudson writes and I agree with him in that a collection of EMC compliant bits do not necessarily make for a compliant system. It's always a good idea to undergo an objective evaluation whenever a board or other component (EMC CE-marked or not) is added to a compliant PC for continued compliance. Whenever I have assumed anything in the past, I usually got bit. So, I don't assume anything which keeps me and my employer honest. >(1) If I buy a PC "package" from, say, Dell or HP or Opus, where the "package" is a >PC plus an installed Ethernet card plus a "Soundblaster" card, and maybe a printer >with its cable:- Can I expect the EMC CE-mark to refer to the "package" and not to >each of the "bits". My answer to that would be to request a MDofC or some other evidence that the supplier has shown due diligence in meeting the protection requirements for that system. If a MDofC or some other evidence cannot be supplied, it's a good bet that a system-level test was not performed and whatever CE marks are present only pertain to the individual system components. >In other words, can I expect (or even demand that) the suppliers (such as Dell, HP, >etc) will be testing their "packages" (or sample "worst case" representatives of >these)? I wouldn't expect anything, but most of the major PC suppliers do expend a sizable amount on and are quite conscientious of compliance. However, ask what assembly level of their product was tested for CE compliance. That information may or may not surprise you. Again, ask for proof of compliance and at what level was compliance claimed. Regards, Ron Pickard r...@syntellect.com The usual opinion disclaimer applies.
Pack of CE Marks?
There's been past discussions on the point that a collection of EMC compliant bits do not (necessarily) make for a compliant system. There's even guidelines on the fact that if you add a board (EMC CE-marked or not) to a compliant PC, you should still test the PC+board for continued compliance. Question (Ignoring any OEMs end-responsibility): If I buy a PC "package" from, say, Dell or HP or Opus, where the "package" is a PC plus an installed Ethernet card plus a "Soundblaster" card, and maybe a printer with its cable:- Can I expect the EMC CE-mark to refer to the "package" and not to each of the "bits". In other words, can I expect (or even demand that) the suppliers (such as Dell, HP, etc) will be testing their "packages" (or sample "worst case" representatives of these)? Alan Hudson EMC/EW Specialist Marconi Simulation (Scotland, UK) email1 hud...@msim.co.uk email2 100534@compuserve.com
Re: Ethernet Compliance
Hi Glen, Let me try to answer your inquiries from the perspective of a networking manufacturer. When we do our EMI testing, we use the cable that would normally be used with the product. That means that if the product is meant to be used with Cat. 5 Unshielded Twisted Pair (UTP) cabling, it is tested with UTP. We presently have available 100Base-T products that MEET the class A requirements using Cat. 5 UTP. Incidentally, most if not all of the networking manufacturers use shielded ports that are tied in to ground somehow within the product, even if the specified cabling is UTP. The reason for this is that noise radiated within the box will couple onto the UTP if it is not shielded at the connector. The cable shielding is not necessary if the design is done properly. If you have more questions, please let me know. Sincerely, Ron Fotino Principal Compliance Engineer Cabletron Systems, Inc. __ Reply Separator _ Subject: Ethernet Compliance Author: Gassaway Glen at !INTERNET List-Post: emc-pstc@listserv.ieee.org Date:5/28/96 2:41 PM We have a decision to make on one of our systems regarding 10 base T LAN cabling. It is intended to carry 10BaseT (10Mb/s) traffic, but we want to install it with the capability to upgrade to 100BaseT (100 Mb/s). The question is whether or not to use shielded cabling. We know that the industry standard in the US and in most of the world is to use unshielded twisted pair cabling (like cat 5). Because of this, most hubs, routers, etc. have unshielded, ungrounded connectors on them. We can buy shielded twisted pair cables and connectors, but obviously the shield will not be grounded when simply plugged into an ungrounded jack. The question is whether or not unshielded 10 base T or 100 base T will meet FCC\CISPR Radiated limits. The limits applicable to our product are class A FCC. Could anyone on the net offer some guidance about this issue? Thanks in advance Glen Gassaway Motorola GSTG EMAIL: p25...@email.mot.com
fwd: Mains switch markings
- Original Text From: Jerry Fix@EMC Srvc@Eng Hou, on 5/29/96 8:17 AM: To: smtp[pstc-...@ieee.org] Good Morning, Can anyone out there help me with a question on mains (AC) switch markings? My original read on this subject was that the "I" and "0" markings were acceptable indicators of on and off. I have seen in some standards (ie: EN 60065) a clause that states the "0" can only be used on switches that break both sides the supply (line and neutral). I always assumed that this clause referred to the case where you only had a "0" marking (off) and not a "I". Can anyone out there set me straight on this one ? Thanks, Jerry Fix, P.E. Compaq Computer j...@bangate.compaq.com
Energy Star Thanks
MANY THANKS to all who responded to my question regarding information on the Energy Star program. I was given some excellent leads and sources which I am confident will answer the questions I have regarding this program. I continue to be amazed at the depth of knowledge available on this forum. For me (and I'm sure all others will agree), It has quickly become an invaluable resource tool. Craig Hensley Iomega Corp. Roy, Utah (801) 778-4135
test lab in Spain
Dear Chan Lee: We just utilized a test lab in Spain by the name of Cetecom to test a couple of our modems. We found them to be very good and easy to work with. One word of caution: you will need to translate all of your documents and prepare a Technical Memo in Spanish in order to receive the approval. We used the service of a company called Ingenia to help with that. Again, they were good and easy to work with once you understand the process. Cetecom Phone: +34 5 2619100 Fax:+34 5 2619113 Contact: Juan Gomez or Juana Banos Ingenia Phone: +34 5 2619142 Fax:+34 5 2619119 Contact: Carlos Bentabol As far as Switzerland goes, we have used Telecom PTT. Again, a very good lab to work with in our eyes. Telecom PTT Phone: +41 31 338 29 80 Fax:+41 31 338 57 47 I hope this helps, Mike. Michael Miele Phone: 508-656-9360 Telebit CorporationFax:508-656-9352 One Executive DriveE-mail: m_mi...@telebit.com Chelmsford, MA 01824 USA __ Forward Header __ Subject: test lab in Spain Author: l...@sam.sam.co.kr at Internet List-Post: emc-pstc@listserv.ieee.org Date:5/28/96 11:19 PM Good morning ? I am looking for telecommunication test lab in Spain and Swiss. Or agent which can do the telecommunication type approval procedure for me(our company). Because, it is very hard to get the certification for foreigners. So, someome who knows test lab or get some experience, please give some information for me. THANK YOU ! chan lee l...@sam.sam.co.kr Courtesy of RCIC http://uc.com/compliance_engineering/
test lab in Spain
Good morning ? I am looking for telecommunication test lab in Spain and Swiss. Or agent which can do the telecommunication type approval procedure for me(our company). Because, it is very hard to get the certification for foreigners. So, someome who knows test lab or get some experience, please give some information for me. THANK YOU ! chan lee l...@sam.sam.co.kr Courtesy of RCIC http://uc.com/compliance_engineering/
Re: Ethernet Compliance
You're asking an unaswerable question, in my opinion. (1) Many buildings are prewired and can't handle any more wire, you've got to make do with what is there, or make rewiring part of the contract. You're not likely going to be the lowest bidder on the job, if you do. (2) If the people who do the wiring know what they are doing, you can have very good results using either coax or CAT 5. If the people doing the wiring don't know what they are doing, they are likely going to make a mess out of either. Believe me, I have seen people making a horrible mess out of either. (3) You have not mentionned running fiber (4) You have not mentionned doing a wireless distribution I suggest you take a building distribution specialist group on to discuss this further. I have included a number of my friends of that persuasion in the distribution. Regards, Vic Boersma
