[sdiy] trying to get my scope to see CHAOS??

[Dan Snazelle]

this is mainly a question I think Ian (the creator of the module I am using right now) might be able to answer, BUT just on the chance somebody else is checking the list at this hour, i figured i'd throw it out here. 

I REALLY want to get the kind of results from the jerkster that ian is getting in these scope shots:

http://home.comcast.net/~ijfritz/ch_cir2.htm


SO...i connected X to channel A of my scope. And Y to channel B.

I put my scope in the right mode....all i get is a square, or a dot that moves in an very strange trace...like it is slowly drawing something out with the dot...sometimes a loop. i wonder if Ian has a special scope that allows the path of the dot to STAY on the screen as it traces out the weird shape?

but alas....my scope isnt doing much but a dot or a square.

Not nearly as cool as what Ian has posted.

do i need to AMPLIFY the signals before they come into the scope?

do i need to turn my probes to X10 or something? 

I dont have too much experience with using the scope in X/Y mode.

Right now my scope is set to:

Input A ( for this application should this be set to DC or AC?) is set to .5 volts/cm
Input B (ac or dc?) is set to .2

it is a B and K 1477 scope.

and you put it into X/y mode by setting the sweep time knob to CHANNEL B


THANKS SO MUCH!!


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