[ntp:questions] Dual Mixer Time Difference (DMTD) instruments sought
Joseph Gwinn
joegwinn at comcast.net
Wed May 7 14:41:24 UTC 2008
I may need a Dual Mixer Time Difference (DMTD) instrument, to measure
picosecond changes in electrical length in a coax plus amplifier time
reference signal distribution system with total delays in the hundreds
of nanoseconds, currently operating at 10 MHz (sinewave), but with 100
MHz likely at some future date.
What DMTD instruments are commercially available? A google search was
not successful - all noise no detectable signal, probably because DMTD
instruments are not that common, and many people build their own.
Thanks,
Joe Gwinn
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