re: OSC Output Ben, I would'nt take those readings literally. I have'nt followed the beginning of this dialog so I don't know why you are looking at this. You need to consider the impedance and the capacitance of the probe you are using. Are you using a crystal and/or are using OSCOUT to drive another PIC? - Tom At 05:42 PM 5/21/97 +0200, you wrote: >Hi everybody, > >First of all, to everybody who replied to my >last call for help THANXXX a lot (Dennis, >Mike,...) ! > >Here are some questions for all you experts >out there... > >1) When I look at the OSCOUT pin of my 16C74 > I see the following sine : 1 to 2 Vpp AC > and 2.5 V DC. Is this normal or should the > signal be larger. (Is the DC voltage OK ?) > What could be the problem ? > >2) Very strange, the next one ... > The bigger my program gets (max. about 1K), > the less signal I get at CLKOUT. Does program > size have anything at all to do with the > oscillator circuitry ?