[time-nuts] T.I. experimenting - newbie question

Bill Hawkins bill at iaxs.net
Sun Apr 3 03:00:23 UTC 2011


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





More information about the Time-nuts_lists.febo.com mailing list