[time-nuts] Using 5335 frequency counter for timing

Jerry Hancock jerry at hanler.com
Mon May 8 13:09:15 EDT 2017

Tim, I understand all about TDRs, was doing communications cable tests going back to '76 at IBM.  This was a simple experiment to show my son (who is thinking of becoming an engineer) how precise certain equipment is.

> On May 8, 2017, at 6:03 AM, Tim Shoppa <tshoppa at gmail.com> wrote:
> Jerry, it's very different than the equipment you currently have, but there
> are specialized microwave TDR's that are used to quantify and localize
> impedance bumps down to the fractional inch level (which would be tens of
> picoseconds). You can "see" every connector and PCB/cable transition using
> these TDR's.
> Tim N3QE

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