I've always been partial to differential measurements. So many things fall out when you do the subtraction.
Make short and long cables using the same wire and connectors. Measure the time delay for each. Subtract the short delay from the long delay to get Td. Subtract the length of the short cable from the length of the long cable to get Ld. The delay per unit length of cable is Td/Ld. If the connectors are a significant part of the delay, you can't use Td/(delay/unit length) to find the virtual end of the cable inside the connectors because the unit length delay changes in the connector. Try it with several different lengths of cable. If the unit length delay changes, something else is going on. Bill Hawkins _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.