I got an almost perfect 5370A some years ago for less than $100. It had one dead input. I discovered that those input devices were essentially unobtanium so I went shopping for a substitute. I found a Maxim chip that seems to work as well as the original comparator, possibly slightly better. I also found that the input was not very easy to work with. However the time interval probes HP 5363a or b (pretty easily available) address the input flexibility issues very well and seem to talk to the inputs better than I can directly. Its output seems to be an ecl signal.
Is there anything a 5370B can do that the A version can't? It seems the major upgrade is the processor, the timer circuits seem essentially the same. In fact this suggests some enterprising time nut could design a new processor taking advantage of much faster and cheaper new processor chips to improve the throughput considerably and could sell the upgrade to all of us with 5370's. I would not be surprised if a PIC could do the task. . . Demian Date: Tue, 9 Mar 2010 16:56:41 -0500 From: "Bob Camp" <li...@rtty.us> Subject: Re: [time-nuts] 5370A vs 5370B To: "'Discussion of precise time and frequency measurement'" <time-nuts@febo.com> Message-ID: <565d26fda92d48a89cebe425506e1...@vectron.com> Content-Type: text/plain; charset="us-ascii" Hi Assuming there's enough of the pot left, (as in the pot still works) that's very likely what I'll do. Bob ******** _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.