[time-nuts] Time interval counter in some tektronix scopes.

[Mark Spencer]

I discovered today that the my tek 2252 scope effectively has a time interval 
counter that at first glance seems to provide similar resolution to my 
HP 5370B.    The propagation delay function can be used to measure the time 
interval between signals on ch 1 and ch 2.   Looking at 10 Mhz signal from one 
of my GPSDOs and my new to me Rb oscillator, I'm seeing the change in time 
interval displayed with a resolution of .01 ns.    I fed the same signals via T 
connectors into my 5370B and the relative readings seem to match fairly 
closely.   The progation delay function will also helpfully display negative and 
positive values.
 
I wouldn't consider this a replacement for my 5370B but it was a pleasant 
surprise to find this.   I'll have to find or purchase a manual for this scope 
and see what other features it has.   (It does have the ability to accept an 
external time base, and has a GPIB interface.)
 
Considering I paid less for my 2252 scope than I did for my 5370B I'm fairly 
pleased with this.  

 
I believe other Tektronix scopes also have similar abilities.   I thought 
someone might be interested in this.
 
Regards
Mark Spencer