On 4/13/07, ELKEJBOUT Mustapha <elkejbout_mustapha@yahoo.fr> wrote:
> Hi everybody,
> Can anyone help me and show me how to display low frequency signals in oscilloscope (what are the settings? triggering, level....) in order to have a stable signal on the screen not a moving spot.

Ok, start simple. Probe your thumb.  That will give you a nice 60 hz
(or 50) signal.
Adjust the vertical amplitude, you'll probably end up with a blur that
covers half the screen vertically, and hopefully all of it
horizontally.

Now adjust trigger and timebase till you get a raggedy looking sine
wave that's still on the screen. 10mS or thereabouts, and trigger set
to auto or normal, and you may have other trigger options.  You can
always cheat and put the trigger on "line" which will sync it to the
power line.

I think that will get you started.
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist