[sdiy] Scope

[tpaddock at seanet.com]

I doubt this is it, but could it be in delayed sweep mode?
Set HORIZONTAL MODE switch to A.
Rotate the "A and B SEC/DIV" horz rate knob all 
the way down and back up some to lock them together.
Sometimes a bright spot is showing what will be expanded 
when you switch to delayed.
But I bet that's not it.

Maybe try this:
Wire from PROBE ADJUST to CHAN 1.
Chan 1 set to .2V/div.
VERTICAL MODE left switch to CH 1.
AC GND DC switch to DC (also try wiggling if it's dirty)
HORIZONTAL MODE to A.
A and B SEC/DIV set to .5 mS.
A TRIGGER to AUTO.
A&B INT to VERT MODE.
A SOURCE to INT.
Adjust intensity to taste.
On mine I'm seeing a square wave about 2 divisions high.

Push BEAM FIND, it should shrink down and get bright. That 
lets you find the beam if it's way off the screen.

Good luck,
Toby Paddock

> So I'm trying to test out my new scope here...
> 
> I attached a Radio Shack RCA to BNC connector
> to probe 1's socket, turned on a square wave on
> my Mono/poly, connected a cable... and there it
> is on the screen...  ...sort of.
> 
> What I'm seeing is a horizontal line of fuzz with
> a bright spot in the center.  I can't seem to zoom
> in on it to see the actual waveform.  I have pretty
> much turned every knob and switch on this thing
> to make the waveform bigger, but nothing works.
> 
> Any help is appreciated...
> 
> Lava
> 
>