Apr 18, 2014 #1 L liambarry Newbie level 3 Joined Jan 27, 2005 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 27 could someone analyse why an oscilloscope with 12.5G bandwidth and 50GS/s can detect the ps level jitter? How it works?
could someone analyse why an oscilloscope with 12.5G bandwidth and 50GS/s can detect the ps level jitter? How it works?
Apr 22, 2014 #2 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,046 Helped 1,376 Reputation 2,748 Reaction score 1,056 Trophy points 1,393 Location New England, USA Activity points 37,902 it samples the signal over and over, and eventually builds up a good idea of what the signal looks like.
it samples the signal over and over, and eventually builds up a good idea of what the signal looks like.
Apr 22, 2014 #3 BigBoss Advanced Member level 6 Joined Nov 17, 2001 Messages 5,953 Helped 1,609 Reputation 3,225 Reaction score 1,593 Trophy points 1,393 Location Türkiye Activity points 35,776 I think if you use memory feature of your scope, you can observe the jitter over a long period.
Apr 22, 2014 #4 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,046 Helped 1,376 Reputation 2,748 Reaction score 1,056 Trophy points 1,393 Location New England, USA Activity points 37,902 by sampling over and over, you get a time scale that is smaller than what you would expect. i.e. a 50 GHz scope should only show you 1/50GHz time steps...but you can do better with the equivalent time sampling...a math trick
by sampling over and over, you get a time scale that is smaller than what you would expect. i.e. a 50 GHz scope should only show you 1/50GHz time steps...but you can do better with the equivalent time sampling...a math trick