[SI-LIST] : Re: si-list-digest V1 #376

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From: Ken Taylor (kentaylor.usa@gte.net)
Date: Wed Jan 03 2001 - 14:09:56 PST


Chris, what you propose is very doable. At some point you have to trade
theory and purity for connectivity, and both Tek and HP (now Agilent) as
well as others long past like Philips and Dolch etc. have done it for years
with various woven ribbon configurations ending in pairs.

Regards, Ken.

Ken Taylor
Polar Instruments, Portland, OR, USA.
+1 503 356-9001
ken.taylor@polarinstruments.com

> Date: Tue, 2 Jan 2001 20:47:07 -0500
> From: "Christopher R. Johnson" <crjohnson11@home.com>
> Subject: [SI-LIST] : Resistive probe and twisted pair revisited
>
> This is a multi-part message in MIME format.
>
> - ------=_NextPart_000_0104_01C074FD.2B907810
> Content-Type: text/plain;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> It seems that the biggest down side to using twisted pair for the =
> resistive probe is the lack of the coaxial shield for noise reduction =
> and impedance stabilization.
>
> The actual application is for a very low cost relatively high =
> performance logic analyzer (500 MHz sample rate), so there must be 16 =
> probes.

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