> If I understand you correctly, then I did not have things setup > symetrically. Now I have a tee on each of the A and B inputs. The unused > port on the B tee has a 50 Ohm terminator. Is this what you mean?
Symmetry makes it easier to see what is going on. If you use a Tee on the B input, then the timing from the center of the Tee on the A input to the internal logic should match the same setup on the B port. That lets you focus on what is between the two Tees. > With the above setup, using the shortest cable I have gives me 1.5 ns. > Adding the longer cable to the shorter, using a F-F BNC coupler gives me 21 > ns, for a difference of 19.5 ns. Adding the barrel complicates things. What is the delay through the barrel? (My guess would be about an inch at 50% of c, so that's ballpark of 0.2 ns.) If you swap the short cable for a longer one, then the only difference is the change in length. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ 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.
