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Article #1013Re: An unusual Oscilloscope phenomenon
From: Rich Grise
Date: Thu, 25 Jun 2009 19:50
Date: Thu, 25 Jun 2009 19:50
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2246 bytes
On Wed, 24 Jun 2009 22:01:51 -0700, John Larkin wrote: > On Wed, 24 Jun 2009 21:42:07 -0700, <castlebravo242@att.net> wrote: >>"David L. Jones" <altzone@gmail.com> wrote in message >>news:h8B0m.53620$FI5.3564@newsfe12.iad... >>> Check out a rather unusual phenomenon you can see on your oscilloscope in >>> my latest blog (#14): >>> http://www.alternatezone.com/eevblog/ >>> See if you can get it to happen on your scope! >>> I'll offer a free subscription to my blog for the best screen shot posted >>> :-> >>> >>> Oh, and the probe doesn't have to be shorted either. >> >>When I worked a Century Data we had a problem with our new reel to reel >>vaccuum column tape drive when ever someone would walk by the drive when it >>was reading it would get data errors. The problem was that the shield on the >>cable from the heads to the preamp was grounded on both ends. > > That's usually the best way to ground shields. When I was a kid, my brother built a Heathkit TOOB amp; in the low level circuits, they only ever grounded one end of the shields. Cheers! Rich
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X-Google-Thread: a5a6238865,2fb4482ba391e6 X-Google-Attributes: gida5a6238865,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!npeer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!cyclone1.gnilink.net!spamkiller.gnilink.net!gnilink.net!nwrddc02.gnilink.net.POSTED!dd653b87!not-for-mail From: Rich Grise <richgrise@example.net> Subject: Re: An unusual Oscilloscope phenomenon User-Agent: Pan/0.14.2.91 (As She Crawled Across the Table) Message-ID: <pan.2009.06.25.20.48.20.483136@example.net> Newsgroups: sci.electronics.design,aus.electronics References: <h8B0m.53620$FI5.3564@newsfe12.iad> <C5D0m.1651$vO4.300@flpi145.ffdc.sbc.com> <n41645hvv4ia1uqa1cnbriilvg4vg1td2a@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 26 Date: Thu, 25 Jun 2009 19:50:09 GMT NNTP-Posting-Host: 71.119.122.152 X-Complaints-To: abuse@verizon.net X-Trace: nwrddc02.gnilink.net 1245959409 71.119.122.152 (Thu, 25 Jun 2009 15:50:09 EDT) NNTP-Posting-Date: Thu, 25 Jun 2009 15:50:09 EDT