RE: South Africa safety

1998-01-06 Thread DouglasScott
Jim, Yes. We were asked by our South African dealer to show compliance. We submitted our EU Decalrations of Conformity. They came back and said this was not acceptable and that full test reports need to be provided. We then sent them copies of our GS Mark certifications. Again this was not

RE: Taiwan EMI Requirements

1997-12-15 Thread DouglasScott
Craig, emc-pstc group, We are on the path for Taiwan approvals. A local test house has been approved by the BCIQ for testing here in the USA. They have a coordinator in Taiwan that they will use to make applications through to the BCIQ. I have two products tested already and three more

CE and Demo Units Again

1997-09-29 Thread DouglasScott
Hi All, Guess I sure stirred the pot on this one. One side says you gotta be compliant even with a non-functional unit. The other side says it's OK to demo something that may or may not comply. I am sure that we all try to build compliance in all the way back at the design stage. None of us (am

RE: EMC Design Question for a Backplane ...

1997-09-25 Thread DouglasScott
Doug, I have had the same discussion with both the designers and the board layout guy. Turns out that our standard proctice is to punch holes for each connector pin. The holes are usually 0.100 on the surface layer and 0.130 on the inner layers. The result is overlapping holes that end up

CE Demo Units f.u.

1997-09-23 Thread DouglasScott
Hi To All, Thank you to all who responded to my request. The most thorough response was from tinb...@aol.com. The answer for me was - yes, we can demo it even at the customer site. That system must be operated by our employees under all conditions. It must be labeled with a notice that it is

RE: EN 60950 and component heating

1997-09-16 Thread DouglasScott
Kevin, Good question. By measuring the pad there are several items to consider. 1st, is the thermocouple in electrical contact with the pad? If so, you may have an incorrect reading caused by currents from the pad through the probe. 2nd, In measuring the pad, you are measuring the junction

RE: Re[2]: EMC/Harmonics requirements

1997-09-15 Thread DouglasScott
Charles, On the face of it your analysis would seem to be correct, although I am not sure that was the intended result. As for me, I will continue to follow this thorny topic but will not get too excited by it until I either get a hassle from a customer or until I see it more clearly defined

RE: Acceptability of Spliced Termination Leads

1997-09-11 Thread DouglasScott
John, In my experience, safety agencies have typicaly frowned on extending leads. The key issue seems to be reliability of connections. Extra measures need be taken to be sure of that point. These measures typically include the crimp connection to the wire AND the insulation of the wire, extra

Antenna Calibrations Again

1997-08-27 Thread DouglasScott
With regard to the discussion about Antenna Calibrations that has opened into broader topics, I offer the following comments. I would also have to agree that open discussion is what I am looking for. There is no real school for compliance persons (except the school of hard knocks) so anything I

FW: User warnings on RS232 connections (IEC950)

1997-08-15 Thread DouglasScott
___ From: DouglasScott on Fri, Aug 15, 1997 8:30 AM Subject: RE: User warnings on RS232 connections (IEC950) To: cwel...@grtpa01.grt.ch.etn.com Chris, We do not take any special actions re: interface connectors on our

RE: test equipment

1997-08-12 Thread DouglasScott
John, I had been using an HP 8591A with EMI options for 5 years. Saw the new HP 8591 EM and wanted it. but what to do with my old one? The boss wouldn't let me spend $$$ for a new one when the old one still worked. So my HP salesperson arranged to have Telogy buy my old one for a really good

RE: CD ROM's

1997-07-25 Thread DouglasScott
Richard, I have been LSO for my company for 10 years now. We ship laser products world-wide. I find that complying with EN 60825 to be adequate for shipping into any country outside the US. At least, there have been no complaints or request for approvals other than that. Note that the laser

Australian EMC

1997-06-12 Thread DouglasScott
What follows are excerpts of a letter I received from Mr. David Brumfield re: EMC Compliance in Australia. Mr. Brumfield is the Assistant Manager of the Radiocommunications Standards section of the Australian Spectrum Management Agency. I asked several questions and he responded to each in

RE: Distance of Measurements

1997-06-12 Thread DouglasScott
Robert, According to BS EN 55022 : 1995 cl. 11.2.1 Antenna-to-EUT distance I quote: Measurements of the radiated field shall be made with the antenna located at the horizontal distance from the boudary of the EUT as specified in clause 6. The boundary of the EUT is defined by an imaginary

FW: ESD - Membrane switches and LCD Displays

1997-06-10 Thread DouglasScott
___ From: DouglasScott on Mon, Jun 9, 1997 8:09 AM Subject: RE: ESD - Membrane switches and LCD Displays To: jeich...@statpower.com Jim, I had the same problem (design issue). The key here is to have the longest