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Groups > sci.electronics.design > #452772

Re: DS1054 LF common mode aberation

From Jon Elson <jmelson@wustl.edu>
Organization Washington University
Date 2017-03-20 14:33 -0500
Subject Re: DS1054 LF common mode aberation
Newsgroups sci.electronics.design
References <skqtcc1sja2tgg9jnnr06mh5shn7b3m5ld@4ax.com> <85fucct15n1bpl61qjods0e3586fuq9g98@4ax.com>
Message-ID <WoydnZX4c5bTs03FnZ2dnUU7-R2dnZ2d@giganews.com> (permalink)

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legg wrote:

> On Sun, 19 Mar 2017 17:04:48 -0400, legg <legg@nospam.magma.ca> wrote:
> 
> 
> The scope probe pairs are normally used as bundled pairs to cut down
> on desktop clutter.
> 
> It appears that the current is being induced in the physical loop,
> created by the separation of the bundled pairs, by a strong local
> magnetic flux field being generated by the DUT power supply.
> 
> The power supply employes two large low frequency ferroresonant power
> transformers inside a skeleton frame.
OK, this is a totally different problem, and ferroresonant transforers are 
known to have a LOT of fluxc leakage.

Just keep your probe pairs bundled and as far away from the source of the 
magnetic field as you can.

Jon

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Thread

DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-19 17:04 -0400
  Re: DS1054 LF common mode aberation Frank Miles <fpm@u.washington.edu> - 2017-03-19 23:56 +0000
    Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-19 22:21 -0400
      Re: DS1054 LF common mode aberation Frank Miles <fpm@u.washington.edu> - 2017-03-20 16:30 +0000
        Re: DS1054 LF common mode aberation Jon Elson <jmelson@wustl.edu> - 2017-03-20 14:31 -0500
  Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-19 22:31 -0400
    Re: DS1054 LF common mode aberation Phil Allison <pallison49@gmail.com> - 2017-03-19 20:11 -0700
    Re: DS1054 LF common mode aberation Jon Elson <jmelson@wustl.edu> - 2017-03-20 14:33 -0500
  Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-20 11:58 -0400
    Re: DS1054 LF common mode aberation George Herold <gherold@teachspin.com> - 2017-03-20 09:12 -0700
      Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-20 21:30 -0400
        Re: DS1054 LF common mode aberation Phil Allison <pallison49@gmail.com> - 2017-03-20 18:41 -0700
          Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-21 01:43 -0400
            Re: DS1054 LF common mode aberation Jon Elson <jmelson@wustl.edu> - 2017-03-21 17:04 -0500
          Re: DS1054 LF common mode aberation Jon Elson <jmelson@wustl.edu> - 2017-03-21 17:02 -0500
  Re: DS1054 LF common mode aberation Jon Elson <jmelson@wustl.edu> - 2017-03-20 14:28 -0500
    Re: DS1054 LF common mode aberation legg <legg@nospam.magma.ca> - 2017-03-20 21:36 -0400

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