Interesting followup. With the exact same setup, but replacing the tee with a Wenzel power divider, I get 18.6 ns.
On Sat, Apr 2, 2011 at 7:42 PM, Joseph Gray <[email protected]> wrote: > I have a borrowed HP 5328A with the Universal Module. I'm using > averaging mode and auto triggering. Counter does not have the OCXO > option. I'm using the internal oscillator, not locking to my GPSDO. > > I was just messing around with a length of Belden 9273 and the 100 KHz > square wave output from my Spectracom distribution amp. Start signal > is the 100 KHz signal. Using a tee, the stop signal is the same 100 > KHz after passing through the length of coax. I'm reading 18.9 ns. The > coax specs give a VOP of 66%. This should calculate out to a length of > 3.74 M. When I measure the coax, I get 3.8 M. > > I am including the BNC connectors in my length measurement. If I > subtract them, I'm much closer to my calculated length. Should the BNC > connector lengths be included or not? Or, is the measurement I'm > getting as good as it gets with this HP counter? > > Joe Gray > W5JG > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
