2 P 40 reset

Archiver

Hi Stampers,

using a 2 P 40 I am facing a new problem: sometimes, if you touch the Stamp
with your finger for example, it will break down, that means the programm
doesn't continue. Unlike the other stamps however it does not restart but it
stays 'hung up' until you reset it yourself.

Is there a way to avoid that (except keeping your fingers off the stamp?:-)

thanks for help,

Uli


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Archiver

>Hi Stampers,
>
>using a 2 P 40 I am facing a new problem: sometimes, if you touch the Stamp
>with your finger for example, it will break down, that means the programm
>doesn't continue. Unlike the other stamps however it does not restart but it
>stays 'hung up' until you reset it yourself.
>
>Is there a way to avoid that (except keeping your fingers off the stamp?:-)
>
>thanks for help,
>
>Uli

Hi Uli,

The crystal oscillator circuit, in particular SX48 pin 2 (xtal input
node), is very sensitive to stray capacitance. Touching that point
can stop the oscillator. Maybe that is what you are seeing? Most
other points on the circuit should not be so sensitive.

-- Tracy