and maybe that the DAC's output feeds an OPAMP first, if so then replacing the OPAMP should fix the problem...
On Thu, May 16, 2013 at 12:10 PM, David Hooke <[email protected]> wrote: > > > OK. > > This MV89 is mounted on a PCB with SMA connectors for the EFC, REF and > 10MHz. I connected the EFC from the TB to the REF out of the oscillator, not > for very long, and things haven't been quite right since then. > > I should not play in the workshop after drinking wine with dinner! > > It'll be interesting to see how Trimble designed the DAC. There doesn't seem > to be much more than a 4V reference, a quad opamp and a bunch of RCs. I > guess that as long as it's monotonic, accuracy is not overly important. > > Cheers. > > david > >> Fess up David. Tell the story. >> >> LOL, >> Tom >> ----- Original Message ----- From: "Burt I. Weiner" >> <[email protected]> >> To: <[email protected]> >> Sent: Wednesday, May 15, 2013 11:54 AM >> Subject: [time-nuts] Embarrassing stuff... >> >> >> David, >> >> I'm sure it's nothing compared to what I did many years ago to my >> Singer FM-10C Synthesizer. You tell us your story and I'll tell you >> mine. You're among friends. Every time my life flashes before my >> eyes it's mostly embarrassing stuff. >> >> Burt, K6OQK >> >>> From: David Hooke <[email protected]> >>> >>> Subject: Re: [time-nuts] three cornered comparison tools >>> >>> Hi All, >>> >>> I've managed to blow up the DAC output on my TBOLT; it now has about >>> 0.5V 42kHz ripple on it. I think I know how I did this, but it's too >>> embarrassing to share in public. >> >> >> Burt I. Weiner Associates >> Broadcast Technical Services >> Glendale, California U.S.A. >> [email protected] >> www.biwa.cc >> K6OQK >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
