Wouldn't a simple diode provide sufficient protection from negative
voltages

/Silas

On 6/4/07, hardware@... < hardware@... > wrote:
>
> > hi.
> > i have the a161 hooked up to the a160, which receives the clock
> > output from the a190.
> > what i'd like to do (in view of recent posts i won't say "need"
> > :) ) is to have the 161 use
> > other divisions from the 160 than those which go into it. i don't
> > want to mess around at
> > the 160, because all of this is happening on the fly.
> >
> > i could of course order another 160, but maybe someone has found
> > a workaround
> >
> > cheers,
> >
> > stu
>
> Two of the wires of the ribbon cable that is used to connect A-160 and
> A-161
> carry the clock and the reset signal for the A-161. They are connected to
> clock and reset of the A-160 (in detail the order of the 10 wires is
> GND/GND/GND/GND/NC/NC/CLOCK/RESET/+12V/+12V. The two NC wires are
> connected
> to the inverted Clock and Reset of the A-160 but are not used in the
> A-161.
> If you connect the Clock (and maybe the Reset) input of the A-161 to
> another
> signal (e.g. /2, /4, /8 of the A-160) the A-161 may run at different
> divisions. You may also add a socket but you have to pay attention that
> this
> input would be not protected and a negative voltage will destroy the A-161
> !
> Normally the digital inputs of A-100 modules are protected against
> negative
> voltages (transistor buffers).
>
> Best wishes
> Dieter Doepfer
>
>
>


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