[time-nuts] Embarrassing stuff...
azelio.boriani at screen.it
Thu May 16 08:02:03 EDT 2013
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 <dhooke at gmail.com> wrote:
> 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.
>> Fess up David. Tell the story.
>> ----- Original Message ----- From: "Burt I. Weiner"
>> <biwa-fOdFMYwuEsI at public.gmane.org>
>> To: <time-nuts-JSkTLETqlTM at public.gmane.org>
>> Sent: Wednesday, May 15, 2013 11:54 AM
>> Subject: [time-nuts] Embarrassing stuff...
>> 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 <dhooke-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>
>>> 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.
>> biwa-fOdFMYwuEsI at public.gmane.org
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