Thanks Jochen and Tom! Very useful to me, still learning...
Keith Ostertag
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--- In TekScopes@..., Jochens Feldhaar <jochen_feldhaar@...> wrote:
Hi Keith,
I have made a lot of them working for a German Oscilloscope manufacturer.
You can use alsmost any of the available BNC-M to BNC-F enclosures, and
then you install a 1M resistor and parallel to that a 12 pF cap, also
parallel a 20 pF (max) C trimmer. So now the normalizer is "tuned" to
the input capacitance at 1 kHz for best square signal in the att setting
that will pass thru directly. Then, adjust the 1:2, 1:5, 1:10, 1:100 and
1:1000 attenuators using the normalizer.
Newer scopes have a c trimmer for adjusting the input capacitance, for
these the normalizer must be externally adjusted to a fixed value,
including the one BNC connector.
Was that of help?
Jochen DH6FAZ
Am 29.09.2012 20:49, schrieb keithostertag:
Jerry-
Maybe you would be willing (or someone else?) to share your schematic
for the normalizer? And any tips for making them?
Thanks,
Keith Ostertag
