03-10-2016, 09:19 AM
(03-10-2016, 07:42 AM)ppppenguin Wrote: Us video types hate having any 50R BNC terminations around. Just the thing to cause a "hard to find" amplitude error in a complex system. 50R cables give more subtle problems so we don't like those either
It's not just you video types, either, Jeffrey!
I can go back to the days when the thick pin of a 50Ω connector could damage the 75Ω socket if you were unlucky.
I remember setting up a sweep generator system once and being puzzled when I got a ripple right across the entire bandwidth that exceeded the limits that I would be working to!
It turned out that the calibration cable thoughtfully provided with our Tektronix 'scope had got into the mix of cables in the 75Ω setup
