Re: RF Loss Question

2002-05-22 Thread Jacob Schanker
Richard: My quick answer to your question is no. You ought to end up with the rated 0.2 dB insertion loss, or pretty close to it. I presume that the insertion loss was measured in a 50 ohm system (could also be 75 ohm or whatever) as the difference in power at a matched load with and without

Product Safety Engineer Position.

2002-05-22 Thread JEFF WHITMIRE
ADTRAN, Inc. in Huntsville, AL has a position open for a Product Safety Engineer with direct experience in Telecommunications equipment and a thorough knowledge UL60950. For details on this position you may view the posting on Monster.com. If you are interested please forward a resume

EMC Chapter of Montreal, June meeting

2002-05-22 Thread Benoit Nadeau
== IEEE Montréal - IEEE Electromagnetic Compatibility Society présentation (in English) : Antenna Behavior and Use - (What Really goes on during a test?!) Colin E. Brench Hewlett-Packard IEEE EMC Society Distinguished Lecturer

RF Loss Question

2002-05-22 Thread richwoods
I am adding a RF device into my transmission path, and the device has a VSWR of 1.2 and an insertion loss of 0.2. Will I end up with a total loss of 0.6 dB due to a loss of 0.4 dB due to the VSWR plus the 0.2 dB insertion loss? Richard Woods Sensormatic Electronics Tyco International

RE: EFT Capacitive Clamp

2002-05-22 Thread Gordon,Ian
Vic I believe that the diagram is for indicative purposes and attempts to show all test configurations. Thus when I perform this testing I use one continuous earth plane to which the EUT is earthed mounted on 10cm supports (if the EUT is not floor standing). Have a look at figure 9. Thanks Ian

Re: EFT Capacitive Clamp

2002-05-22 Thread Neil Helsby
Refer to figure 9 in EN 61000-4-4 where the reference plane is clearly the floor. My interpretation is that the reference plane shown under the clamp in figure 7 is the floor, unless the test room floor is not earthed (eg concrete), when an earthed plane covering the area of the clamp must

Re: EMC requirements

2002-05-22 Thread Leslie Bai
Cecil, What products are you marketing in those countries? If someone told you that there is no EMC requirement in those countries, that could be dangerous simply because they do have for certain types of products. Are you seriously looking for answers from this group? Without specific

Re: Coaxial Switches

2002-05-22 Thread Jacob Schanker
Richard: The old standby coax relay people, Dow-Key, are still around at www.dowkey.com. They've got a wide variety of coax switches and relays. Regards, Jacob Z. Schanker, P.E. 65 Crandon Way Rochester, NY 14618 Phone: 585 442 3909 Fax: 585 442 2182 j.schan...@ieee.org - Original

RE: Australian TS001 now part of AUS/NZ60950?

2002-05-22 Thread Kevin Richardson
Peter, Alex Group, ACA TS001:1997 is still current and required by Australian telecommunications regulations as Peter and others have mentioned. Therefore to comply, you must have a report to TS001 and a report to AS/NZS 3260 (both from an ACA Recognised Testing Authority [RTA]). As Peter