[TriEmbed] Scopes, probulators, and matchmaking
Pete Soper
pete at soper.us
Fri Jul 27 09:37:50 CDT 2018
Here's an excellent source for reasonably priced coax. Wireman doesn't
stock RG-159, but there are multiple alternatives with similar size and
specs:
http://www.thewireman.com/pdf/032618.pdf
A trimmer capacitor can be used to get matching just right, but at the
point you'd be thinking of this you'd be wanting a different 'scope. :-)
-Pete
On 07/27/2018 10:22 AM, Brian via TriEmbed wrote:
> Hi Mauricio!
>
> My advice would be to go with an off-the-shelf probe and just not
> worry about the impedance mismatch; you can do a few calibration tests
> with known signal sources if you want to find the correction curves.
> That said, read on...
>
> The very best cable for the job would be small coax such as RG-159.
> However, you'd be hard-pressed to find that locally, I think, and it's
> probably not too cheap in the lengths you'd want.
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