On Mon, Oct 29, 2018 at 8:25 AM Dr. David Kirkby < [email protected]> wrote:
> > > I have a 100 MHz scope, and can borrow a 300 MHz scope, but I don't have > anything really fast. > > I have a VNA which can make measurements of phase difference down to 300 > kHz, but don't trust those because of the fact one calibrates with a 50 ohm > load, 50 ohm calibration standards, yet I know the impedance will rise well > above 50 ohms at low frequencies. > > I was looking for a different approach than a VNA, to make comparisons with > a VNA. > > Dave > > My MDO3024 (a modern scope) can measure delay and phase between two inputs, using the measured zero crossings, including statistics of the measurement. If you can obtain a similar scope, you could use two identical 1 Meg probes and a separate termination. Regards, Mark _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
