24 Nov
2009
24 Nov
'09
10:18 p.m.
Geoffrey Reed wrote:
Somewhat related to the 10 year rule :) fixing
systems, aligning drives and
building NOS z-80, etc.
I would like reccomendations for inexpensive-ish oscilloscopes :)
What sort of bandwidth does one need, are there any materials out there for
someone who has never used one before beyond hooking up 8" drive test points
from a Tandon manual and adjusting the head alignment.
I have a Tek 2465 I got a few years back off eBay. It's a 300MHz 4
channel scope, and it's been a great help for debugging. 300MHz is a
bit high, but I think I only paid $300 or so for it, which I thought was
a great deal.
Here's a 2465A for about the same price: 160380373748
Here's my model: 160380657710, and 280394276739
I've considered one of those USB digital scopes, as there are times when
I am at a show and someone needs a scope, but I'm still leery of them.
Anyone have one and can speak to them?
2 channels is a must, and I think 20-50MHz is probably good (I run mine
in 20MHz Bandwidth limit mode all the time).
If you are going to debug digital, though, I recommend a logic
analyzer. I picked up a 48 channel Tek 1225 for $50.00 or so a few
years back, and it's been extremely helpful.
Jim
--
Jim Brain, Brain Innovations (X)
brain at jbrain.com
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
Home: http://www.jbrain.com