Alan B. Pearce wrote:
> >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.
>
> You need a storage oscilloscope, typically known these days as a "digital
> storage oscilloscope" or DSO. The waveform is then stored digitally an 
> will
> form a stable display on the screen.

If the OP has a digital camera that allows the shutter to be opened for a 
time equal to or exceeding the time it takes the ray to cross the screen, it 
can be used as a readily available and inexpensive replacement for a DSO.

I've used this trick a long time ago with my Tektronix 485, but for a 
different application -- to capture single shot waveforms. :)

Vitaliy 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist