"JimL" wrote in message
om...
I need to buy a time base plug-in for my Tek 7704 mainframe.

The7B53A is described as being a "Delayed/delaying time base in one",
while the 7B71 is a" Delaying time base".

Can someone tell me the difference? Tnx, Jim.


Many tnx to all- I did look up the patent. I really appreciate your efforts.
I ordered a 7B53A and will see if that is adequate. Jim.