Thank you, Keneth,
you are so right. what a shame that I didnt think of that.
the PICDEM 2 PLUS has an oscillator, not just a quarz, which I didnt 
realize.
that's why I saw the input signal there.

Now that I switched the probe to 10x (reducing its input capacitance from
WOW . 72.5 to 17.5pF and the resistance from whaaat? 237 Ohms to 9 Meg)
now the OSC1 signal is there very clear with 3 V amplitude.

thanks again
Lembit :)



>
> From: "Lembit Soobik" <lembit.piclist@t-online.de>
>
>> Hi,
>> I have difficulties with the oscillator:
>> when I program the device and run it in the PICDEM 2 PLUS, it works fine.
>> when I put the device in my own buildt board, the oscillator shows a nice
>> sinewave on OSC2,
>> but nothing on OSC1 (that is about 1 V DC).
>>
>>
>
> I'm not sure about the PICDEM 2 Plus part, however is it possible you
> are just having a measurement issue?
>
> Unless you are using a special low capacitance scope probe,
> you won't be able to monitor OSC1.  The impedance of the
> probe is enough to stop the oscillator from running.  OSC2
> is the output from the internal inverter and has enough drive
> to overcome the probe impedance, although the frequency
> will be shifted due to the probe.
>
> Ken
> klumia@adelphia.net
>
>
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