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From: "John Jardine"
Subject: Re: Displaying ELF On a 'Scope
Date: Sun, 22 Dec 2002 14:41:41 -0000
NNTP-Posting-Date: 22 Dec 2002 14:28:39 GMT
X-Newsreader: Microsoft Outlook Express 5.00.2615.200
Ed Price wrote in message
> "Ron Hubbard" wrote in message
> > I have an old 10 MHz Heathkit oscilloscope that works okay at the very
> > end, but on the very low end- say 1 Hz to 300 Hz - when I try to display
> > sine wave all I get is a section of it; I can't even tell if it's a pure
> > sine or there's distortion. Anyone have any suggestions for getting a
> > and complete display of very low frequencies?
> Those frequencies are within the range of an XY plotter. Some plotters
> had a built-in sweep generator connected to the X axis, so you could plot
> directly. Something very graceful about watching a mechanical plotter
> out a beautifully slow sine function.
Magical machines!. I've known myself plotting out a complex drawing purely
to enjoy the 30 minutes of mindless relaxation offered as it goes about it's
business. The sight and sound (or theatre!) of many cycles of a big sine
wave being plotted, has for me, an odd meditative aspect.
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