This may be drifting a little OT, but I'm wondering why you couldn't
just wire the 10V source to the normalling lug of the input jack, and
then wire the tip lug to the attenuating pot, so that it would act as
an attenuator for the 10V source or any signal you plugged in...
Am I missing something? It would be far from the first time :)
-Chris
On Mar 10, 2006, at 12:30 AM, djbrow54 wrote:
> --- In ComputerVoltageSources@yahoogroups.com, "john mahoney"
> <jmahoney@...> wrote:
> > I like the way this is shaping up:
> > Input attenuators, yes!
>
> Mine are not input attenuators. They are 0 - 10 volt controls sourced
> from a regulator and normalled to the inputs. With no input plug the
> controls provide 0 to 10 volts. With an input plug, the controls are
> disconnected and there is no attenuation
>
> > A SpeakJet option would be fabulous
>
> I haven't really done much with my SpeakJet. I did just buy the
> TTS256 to play with. I do use a general pin to interface to the
> SpeakJet. Interrupts have to be disabled to send data using the
> serial commands. I also used the buffer half full flag instead of
> speaking flag to speed things up by using the buffer. However, you
> can't effectively put pauses in with program delays since you don't
> know when the chip is speaking. You have to program in the pauses. In
> retrospect I might have used the speaking flag but this all changes
> when using the TTS256.
>
> > Dave, I assume that you mean MOTM horizontal units when you refer to
> 1U and 2U. (BTW, the 0.5U MOTM format was recently born on the MOTM
> list.
>
> Yes
>
> > > Just spent some time on the phone with John Loffink discussing ...
> > What's a "phone"? ;-)
>
> It took me a bit to remember how to dial long distance :)
>
> > > I'm waiting for someone to suggest FOCAL. Anyone here that old?
> > > Probably could still write it.
> > Don't know that one. We had a FOCUS programmer in our department
> > once, but I assume that it's something else.
>
> Focal was a PDP-8 high level programming language where commands were
> single character. Pretty efficient. ALso did PL/M for any old-timers
> out there. See http://en.wikipedia.org/wiki/FOCAL
>
> Dave
>
>
>
>
>
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