Vacuum metalizer in SE Asia

Hello all, Does anyone know of a decent (by that I mean they work out of something better than a Quonset hut) vacuum metalizer of plastics in SE Asia, preferably in Malaysia? There are numerous VM finishers we know of in the area but none of them apply the coating as a EMC solution, but for

Decoupling - capacitor values

A microprocessor is driven by a 12MHz clock. The 5V Vcc-pin is decoupled by a 100nF capacitor with a few mm leads. We can observe an unwanted 156MHz signal on the 5V line, maybe 13th harmonic of 12MHz. We will try to suppress/decouple this 156MHz signal. Suggestion: Insert a SMD ceramic

RE: HP-85650A Calibration

I've used Acucal in the past Ed. The have several portable labs that travel around the area at specific times. I think they hit up here in the Northwest around July. Not a clue when they hit the San Diego area. Here is their web address. www.acucal.com. They calibrate the equipment at

Re: HP-85650A Calibration

Ed, Use an accredited cal lab. of course, it should be A2LA ;-) Seriously, they have a list of suitable labs on their website www.a2la.org Derek Walton

HP-85650A Calibration

Hi Listmembers! I need to get a traceable calibration on my HP-85650A Quasi-Peak Adapter. The HP service manual calls for use of a Watkins-Johnson Model S1 Pulse Modulator, which I can't seem to find. Two questions; for those who do their own in-house calibration, what do you use? Or, what

RE: Combining of Compliance Engineering and Environmental Health and Safety

Martin, my 30+ years experience in Product Safety leads me to believe that the advantages of a common group/management would outweigh the disadvantages. First, a HS department deals with many more issues than you listed including all worker safety regulations, standards and practices. On top of

April, 2002 EMC/Telco/Product Safety Update Now Available

The Curtis-Straus Update for April, 2002 is now available at: http://www.conformity-update.com The headlines are: Aircraft Interference Sparks FCC Crackdown. FCC Appointment Becomes A Political Football. ARRL To Battle Looser RFID Requirements. Employers Sued Over Alleged Semi Related Birth

Re: IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another)

Andy At least my eyes do not appear to have been deceiving me! See also John Wood's response (thanks JW) sugguesting that I (we?) contact IEC TC66 Chairman: Mr. Cecil CHAPMAN Grant Instruments (Cambridge) Ltd. Mill Barn GB - BASSINGBOURN, CAMBRIDGESHIRE SG8 5PP UNITED KINGDOM Tel: +44 1763 247

RE: Calibration Tracking Software

Gentlemen Assuming a Win-Tel platform, I have found that both Excel and/or Access to be adequate for large databases that will not have more than (2) users. The caveat is that all embedded VBA source be mapped in a separate (formal) document, and that the Network Admin carefully controls

Question concerning antenna carousels, their usefulness, credibility of data collected, and......

Et Al: I am soliciting opinions from anyone who has attempted using an antenna carousel that aids in doing automated EMI measurements under CISPR 25. The CISPR 25 specification provides requirements in terms of spacings of the antenna elements from the walls of the room, size of the room, use

Fwd: 100kV ESD Immunity Testing

Someone recently asked for 100 kV ESD. SInce I work for Schaffner I thought I'd ask the factory.. Well, hope this helps whoever.. Derek Walton ---BeginMessage--- I have spoken to John Hardwick at Culham Labs, he says that they can generate 100kV but he would need much more info before he can

Speaker connected to a PC - FCC rules

Dear people, I need to know if the FCC rules (part 15) applied to the following product : Speaker peripheral connected to a personal computer. This product has its own power supply. It's connected to the PC via the speaker output. Reading the Bulletin 62, pages 10 and 12, I'm not sure this

RE: IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another)

-Original Message- From: John Allen [SMTP:ja014d7...@blueyonder.co.uk] Sent: 15 April 2002 20:44 To: EMC-PSTC Subject: Re: IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another) Hi Folks My turn to ask some questions as a newcomer to this version of

100kV ESD Immunity Testing

Can anybody recommend equipment available for hire in the UK, or a UK test laboratory that facilitates *low energy* (not lightning simulators) ESD air discharge immunity testing to 100kV? Thanks in anticipation. Russell. --- This message is from the

question on measuring bonding impedance

Is there a standard method for measuring AC bonding impedances for electrical bonding? Thanks in advance, Susan Beard --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at:

Re: question on measuring bonding impedance

Susan, I take it to mean that you mearly wanted a 'low impedance' bond which may (or 'may not' as the case will decide) include a electrical bond from fasteners like a nut and bolt combo that force two metal surface to contact under preassure. The question that arrise from our understanding of

RE: question on measuring bonding impedance

RE: question on measuring bonding impedanceMike, A weld occurs when there is melting of metal. The metal will only melt if it gets enough heat. It will only get enough heat if there is enough of a resistance there (P=IR), or an arc (where the arc-welder gets its name), either of which would mean

Re: IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another)

I read in !emc-pstc that John Allen ja014d7...@blueyonder.co.uk wrote (in 006a01c1e4b5$f4967880$0200a8c0@johnallen) about 'IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another)', on Mon, 15 Apr 2002: My turn to ask some questions as a newcomer to this version of the

Re: question on measuring bonding impedance

I read in !emc-pstc that Michael Taylor mtay...@hach.com wrote (in da60a3b237698944981e58ebf28d76d03de...@iris.lvl.hach.com) about 'question on measuring bonding impedance', on Mon, 15 Apr 2002: for domestic product safety EN-61010 Sect 6.5.1 requires 25Amps (DC or ACrms) or 2x the fuse

Re: question on measuring bonding impedance

I read in !emc-pstc that Robert Wilson robert_wil...@tirsys.com wrote (in 3FF57405336C9B4C976A1819F860A2560F6966@xng_tirsys.TIRSYS.COM) about 'question on measuring bonding impedance', on Mon, 15 Apr 2002: How about the usual method of determining the value of very low resistances and impedances?

RE: question on measuring bonding impedance

Susan, I'm not sure what AC means in your message below. I'm assuming that you mean in the radio frequency range, where low bonding impedance across joints means good shielding effectiveness. There is an SAE standard for measuring the transfer impedance across EMI

Re: IEC/EN 61010-1:2001 - Dielectric Strength Testing Question ( another)

Hi Folks My turn to ask some questions as a newcomer to this version of the standard: 1 Dielectric Strength Testing to Clause 6.8.4 Voltage tests Table 9 Test voltages for BASIC INSULATION. Can anyone confirm my suspicion that there may be a misprint in Column 1 Clearance of Table 9 , as

RE: question on measuring bonding impedance

I promised myself I was not going to drag out my soap box and jump into this but . . .! (this discussion is limited to only the issue of the measurement of bond impedance - not if the connection can stand xx amps) While MIL 5087 establishes some bonding requirements methods, for domestic product

Re: question on measuring bonding impedance

I wasn't going to respond to this one because I know of no standard, and I don't know what you mean by AC, power frequency or rf. But HP/Agilent makes/used to make a bond meter with a 1 kHz signal. The purpose was partly to offset the effects of galvanic potentials: an ac measurement cancles

RE: Calibration Tracking Software

We use a package called GAGEtrack, produced by the CyberMetrics Corporation. www.visit.com Good if you have a large number of items to track and control. If you only have a limited number, Excel is a very good tool. Andrew Carson - Senior Compliance Engineer, Xyratex, UK Phone: +44 (0)23 9249

Re: Criteria for UL V0 plastic enclosure

Hi Scott: In the case of LPS, wouldn't the plastic enclosure still be considered decorative plastic outside a fire enclosure and required to meet HB flame class (per UL 60950, 4.7.3.3)? Yes. Virtually all plastic materials meet the HB flame class, hence my comment that he may

RE: Calibration Tracking Software

Mike, we use Excel and include the following data: Model Description Serial number Manufacturer Last cal date Due cal date Calibration lab Cal cost Richard Woods Sensormatic Electronics Tyco International -Original Message- From: Mike Stone [mailto:mst...@lsr.com] Sent: Monday,

Re: Criteria for UL V0 plastic enclosure

Hello Rich, In the case of LPS, wouldn't the plastic enclosure still be considered decorative plastic outside a fire enclosure and required to meet HB flame class (per UL 60950, 4.7.3.3)? Regards, Scott Rich Nute wrote: The choice is yours. If your product is supplied by a Limited Power

Calibration Tracking Software

Good Morning, I have been looking for a reasonably priced (cheap) software program to track and produce status reports for our calibrated equipment. Does anyone have any suggestions? Thank you in advance. Regards, Michael Stone L. S. Compliance Inc. W66 N220 Commerce Court Cedarburg, WI

Re: Measuring Instruments Directive

Dear Nick There are a number of useful links on the draft MID on our website A HREF=http://www.cherryclough.com; www.cherryclough.com/A under Useful links to EU directives (or go directly to: A

Re: Does San Diego Require NRTL Marking to Install ITE

You have been able to get Early Use Letters from UL, but I think that policy has recently changed a little. Contact your test engineer. Regards, Doug McKean --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc

Measuring Instruments Directive

I have come across some information on the web specifically to do with electricity and gas meters that infers that a new directive called the Measuring Instruments Directive is about to come into force. I have searched the Europa website for information on this but can not find any. Does

JWDS00028

Hi, Does anyone aware of what this standard JWDS0028 is meant for ? Where is it originate from ? Thanks in advance! Jasmine --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site

Does San Diego Require NRTL Marking to Install ITE

All, Is NRTL marking a mandatory requirement to install a CMTS router in a cable head end in San Diego? We have a 48 VDC powered CMTS router which needs to be installed in a cable operator’s head end in early May. Although the basic UL evaluation of the product has been completed without

Output short circuit testing

Hi Group, In a previous life when I developed frequency converters, we used to perform short circuit tests to UL508C. I am developing automotive ESA's which may find use in non-automotive applications ( Mains - DC power source ). Is output short circuit testing covered by some generic

RE: Using ITE EMC Standards for Non-ITE Equipment

Hi Jim, As the function of the Emission standard is to protect the spectrum, it cannot be seen different then protecting the spectrum of the environment the equipment is used in (office). (seen the physical range any interfence can go: +/- 30 meters) Then seek appropriate standards, taking

95/54/EC - Automotive - notified bodies

Hi all, The Automotive directive 95/54/EC becomes mandatory October 1 2002. Is there a web-site which lists the notified / certification bodies within EU for this directive? Thanks. Best regards Amund Westin, Oslo/ Norway --- This message is from the

RE: Physical Protection of Flexible Power Cords

You're already on the edge of the code with this one. You describe the equipment as permanently installed. Under those circumstances you normally could not use flexible cords. You might use the condition 400.7 (6) Connection of utilization equipment to facilitate frequent interchange to permit the

Product Safety the IEEE 2002 Symposium on EMC

I am posting the following for Dan Modi ( dan.m...@alconlabs.com ). Please contact him direct. Do not forget to mark the 2002 IEEE EMC Symposium on your calander to attend and by all means do not miss the Product Safety Workshop (or the other TC-8 Sessions). Rich Nute is willing to provide

RE: Product Safety Bible

George, the standard fails to describe the allowed sizes of openings in the top and sides of a fire enclosure. As far as the standard is concerned, fire must only go down since only bottom openings are described. The side and top openings that are described are for electical enclosures and do not

RE: Product Safety Bible

Dear Volker Gasse Is this a pure Electrical Safety book or does it also include EMC ? Best regards Amund -Opprinnelig melding- Fra: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]På vegne av Volker Gasse Sendt: 8. april 2002 09:52 Til: geor...@lexmark.com

Shipping Ckt Packs into EU

Hello Group, I am considering a strategy for shipment of individual circuit packs into the EU. These circuit packs are part of an overall (rack mountable shelf) custom ITE system which will be evaluated to the appropriate requirements/directives (LVD and EMC) and will have a CE marking. I

Re: Adoption of IEC-60950 3rd Ed.

Hi Oscar, Please be advised that the IEC has replaced IEC60950 3rd Ed. with IEC60950-1:2001. Excerpted, the foreward of IEC60950-1 states This first edition of IEC 60950-1 cancels and replaces the third edition of IEC 60950, issued in 1999, and constitutes a technical revision.. The

RE: EMC SIX LAYER PCB

If this is what you feel in necessary at moderate frequencies (I believe the original discussion was related to 600 MHz), I'd hate to see what you might feel is required at high frequency. :) The idea of chip in board that you mention is not new. It was first tried in the Far East some years ago

Re: EMC SIX LAYER PCB

Cortland Richmond 72146@compuserve.com wrote: Current flowing through a via or a capacitor creates a voltage drop which drives the planes it connects, as a radiator. A good antenna may be made out of planes connected by a via, with RF applied between them. We need to avoid doing this by

RE: Keyboards/Mice

Chris, what standards did the keyboard and mouse manufacturer(s) test to? Try contacting the manufacturer directly and requesting the full EMC test report, including the ESD test setup. Sometimes this is a real pain in the tail to get hold of for such low dollar equipment, but it sounds like you

RE: Danger and Power of Lightning

Clearly, we need to ensure that lighting carries the appropriate regulatory warnings! A couple of paragraphs of the usual rambling UL/CSA warnings and cautions should do the trick. :) Bob Wilson TIR Systems Ltd. Vancouver. -Original Message- From: geor...@lexmark.com

RE: Faying

Well, maybe. I think you mean the word spelled fey. Also from the Encarta World English Dictionary: fey 1. (omitted) 2. SUPERNATURAL - relating to or typical of magic or the supernatural 3. CLAIRVOYANT - supposedly able to see into the future 4. SCOTLAND - DOOMED TO DIE [Old English faege,

RE: Faying

Yeah, blame John! :) For what it's worth, in the 25 years I have been involved in the mechanical packaging design of electronic enclosures, I have never heard of the word faying. One can't help but wonder if someone just misspelled facing. Bob Wilson TIR Systems Ltd. Vancouver. -Original

Re: Measurement Uncertainty Software

Bob, before you go round the houses on this, I suggest you talk to Trace at A2LA. He can tell you what a lab should really be doing IMHO, a spreadsheet is all you really need. tmcintu...@a2la.org Best regards, Derek Walton

RE: Faying

Greeting fellow vocabularians, The root word, 'fay is ancient Scottish, meaning to have the power of prediction. Those of you that are fay may have seen this coming. I wonder if anticipating grounding is similar to expecting volts. Regards, Alan Brewster Senior Systems Safety Engineer

Measurement Uncertainty Software

Does anyone know of any measurement uncertainty software that may be on the market to help in the determination of measurement uncertainty for the various EMC test methods? Thanks, Bob Heller 3M Product Safety, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252

Re: Faying

The Encarta World English Dictionary says: Fay to join pieces of wood together tightly, or fit tightly inside another piece of wood. Do note this is a hard-cover dictionary, NOT an online one. I have not (yet) looked online. Cortland --- This

Re: Faying

Ed, Thank you. Especially the part blaming Woodgate. My grandfather's name was Fay (son of Irish immigrant) and I always wondered at the origin of that name. - Robert - Robert A. Macy, PEm...@california.com 408 286 3985 fx 408 297 9121

Faying

A couple of weeks ago, there was a thread discussing bonding techniques for ground studs. I suggested that MIL-B-5087 had some nice drawings showing typical accepted military practices. Of course, MIL-B-5087 has been superseded by MIL-STD-464, but you can still find electronic copies of

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