Chris and I took this offline so as not to bother the time-nuts thread. Hopefully we can work it through. Chris is lucky as he only has a band 2 problem. Band 3 in nastier o deal with. Chris since several have expressed interest perhaps we just add them to your new thread. We can still skype for the real time work.
Joe to your 545. Lots of possibilities. There is the yig tuning circuit driven by a dac driven by a 6.2V zener reference. I have run into bad zeners more then I care to count. Plus the other part of the equation is the locked comb source. So as I say band 3 is nasty lots can go wrong besides someone simply frying the front end. Regards Paul On Mon, Dec 10, 2012 at 9:00 AM, J. L. Trantham <jlt...@att.net> wrote: > Me too. > > I have two 545A's, one of which works and the other of which has issues > with > Band 3, failing to read in a very interesting pattern suggesting a YIG > filter issue, probably the control circuit. > > Just no time to chase it right now. > > Please post the resolution. > > Thanks. > > Joe > > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Rex > Sent: Monday, December 10, 2012 6:50 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] EIP545A 18GHz counter query > > > I have an EIP counter with a problem, stashed, that I need to look at > eventually. So have been following the thread a bit. > > If you guys get somewhere conclusive (or not), might be nice to post a > summary of all important details, techniques, or circuit notes beyond > the manual, found, to this thread for closing to posterity searchers. > (And me.) > > And, in the mean time, good luck, bon debugging. > > -Rex > > > On 12/9/2012 8:41 AM, paul swed wrote: > > Chris > > TP4 is not all that helpful its a control signal. > > So let me back up for a minute. What are we troubleshooting? I was > > thinking band 2 was semi working and you still had a totally dead band > > 3. My comments have been around trying to see what was going on with > > 3. Other comment. > > I think we should take this offline. Most likely driving time-nuts nuts. > :-) > > Do you use skype? > > Regards > > Paul > > > > > _______________________________________________ > 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.
