Hi I'm about 90% sure I'm going to hang on to the counter. It may wind up with a bunch of fixed level inputs on it, but for the price - I'll live with that. Other than the blow to the front panel it seems to be in ok shape.
If I do keep it, tearing it open and checking all the internals is definitely on the list of things to do. Finding a board loose or a screw that needs tightening is pretty likely. Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Latham Sent: Tuesday, March 09, 2010 1:04 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 5370A vs 5370B Hi Bob: sounds as if it just had a hard bump, meaning that all the boards and connectors need reseating. I had an Hp device with a tiny crack in a pc trace on the motherboard, but by golly I found it. Hope the B doesn't prove to be a sequential vortex :-) Don ----- Original Message ----- From: "Bob Camp" <li...@rtty.us> To: "'Discussion of precise time and frequency measurement'" <time-nuts@febo.com> Sent: Tuesday, March 09, 2010 10:08 AM Subject: Re: [time-nuts] 5370A vs 5370B > Hi > > Ok, the rest of the story: > > I picked up a 5370B for less than the price of the 10811 inside it. The > unit > powers up and appears to function at some level. All of the front panel > knobs are either busted or sheared off. Switches and buttons all seem to > be > there and function (2 minute quick check). > > I have it on a 3 day right of refusal. Popping the top to look inside > voids > that (at least I believe it does). Shipping there and back is roughly half > of what I paid for the unit. > > 5370A's are pretty common out there. 5370B's not so much so. If I keep > this > unit I'm trying to calibrate just what sort of adventure I'm getting > started > on. I already have a number of them going on. > > The goal is still to get this one up and running by "repairing" the front > panel pots. With 4 of them to fiddle that may or may not work out. Ideally > I'd like to have a 5370B when I'm done. Since A's are all over the place, > swapping parts with an A to get the B going is what I was considering. > > Of course if somebody has a little bag of magic dust that instantly > repairs > things.... > > Bob > > > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of paul swed > Sent: Tuesday, March 09, 2010 8:49 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] 5370A vs 5370B > > I don't think thats true. > There would be a lot of common parts so the question is what are you > looking > for? > > On Tue, Mar 9, 2010 at 7:47 AM, Bob Camp <li...@rtty.us> wrote: > >> Hi >> >> So a parts donor 5370B is a donor for 5370B's and not so much for a >> 5370A. >> >> Bob >> >> >> On Mar 8, 2010, at 11:37 PM, Bruce Griffiths wrote: >> >> > The input amplifiers also differ. >> > The linear input voltage range of the 5370B input amplifiers is greater >> than that of the 5370A. >> > >> > Bruce >> > >> > Chuck Harris wrote: >> >> Front panel, chassis, motherboard, and power supply appear to be the >> same. >> >> >> >> The CPU, ROM, and RAM boards were made into a single board. There >> >> were >> >> some changes to the counting circuitry to make it more production >> friendly. >> >> >> >> The whole counter was sped up so that it could read at a somewhat > higher >> rate >> >> than the 5370A. >> >> >> >> -Chuck Harris >> >> >> >> Bob Camp wrote: >> >>> Hi >> >>> >> >>> How much of the 5370A was directly carried over into the 5370B? >> >>> >> >>> 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. >> > >> >> >> _______________________________________________ >> 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. >> > _______________________________________________ > 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. > > > > > _______________________________________________ > 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. _______________________________________________ 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. _______________________________________________ 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.