[sdiy] Oscilloscope

[Toby Paddock]

I have a 2215 at work. I wish I had one at home. 

Sounds like it's alive. So far so good.

If you hold on to a piece of wire and touch it to the center 
of the channel input, you should see some line freq noise. 
(You're the antenna so be sure you're not touching anything 
else or grounded)

Connect a thin wire from the "probe adjust" (or probe 
"something") to a channel input. That should be a square wave.

Radio Shack has RCA to BNC adapters. That would be an 
cheap and easy way to connect audio to it. 

Z axis connector on the back can be used to control brightness.

Be gentle with the power switch. I had one break. Parts are 
hard to come by. I don't have a manual.

Let me know off list if you want me to try anything specific 
with mine to see if they act the same. (I noticed it has 
something small rattling around inside too) 

Later,
Toby Paddock

Moho Disco[SMTP:moho at mohodisco.com] wrote:

I just bought an oscilloscope on eBay.  The unit was sent
uninsured, arrived in a dented box, and when I shook it the
scope rattled around inside!!

This is the first time I've ever used a scope.  It's a Techtronix
2215.  So I have a few questions:

1) How can I tell if this thing works without having test leads?
2) Where is a good place to buy test leads?
3) What kind of test leads should I buy?

I turned it on, and a flat line appeared in the display.  I fooled
with some knobs and switches and got a nice bright regular
pulse to go across the screen continuously.  I'm hoping this
is a good sign.

And also if anybody has a manual they'd be willing to copy for
me, that would be awesome!  I want to get right to work - I've
got a Paia Fatman I've got to troubleshoot, and a guitar amp
to fix!

Thanks in advance,

Lava