[sdiy] oscilloscope single/dual ?

[ASSI]

On Monday 28 June 2004 21:15, Fernando de Izuzquiza wrote:
> I've seen a new scope 10MHz single channel but XY capable and screen
> is 1/2 than usual (about 3''), but is about 30% size of a normal
> scope and I like that.
> I'd like some opinions about how important is to have two channels
> for SDIY... and 3'' V 6'' also.

Depends on your eyes and how precise you want to take off readings. I 
would want a flat and rectangular tube, however.

For adding traces, the books are full of circuits to chop from 2 to 8 
audio signals into a single scope input. As long as the amplitudes of 
the various signals aren't too different, there aren't any unusual 
difficulties.

> I can add and substract signals before the scope so, it is usual to
> compare signals or any other duty that asks for a dual channel
> instead of single?

You mean like checking Trigger, Gate and three envelopes for their 
relative timing? I think yes, you'd want to do that. :-)


Achim.
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