Recommended logic analyzer/scope tools? (was: RL02 write faults, fixed it! Another cable mistake)
charlesmorris at direcway.com
Fri Jan 6 21:19:29 CST 2006
>For a logic analyzer, I have a Tektronix 1240 - older 50Mhz machine. Mine has
>54 channels installed, but I only have pods for 36 channels (anyone got spare
>1240 pods?). Decent machine, works well, I've got a boxfull of accessories for
>it, RAM packs, ROM packs which let it understand various instruction sets etc.
I used to work with one of those over 20 years ago. Big and heavy,
but now quite inexpensive (except shipping :) The pods (as with
most logic analyzers) can be hard to find if not included with the
>When I need it it's really handy, but I don't use it near as much as the scopes.
True, but when you need it you REALLY need it. Like trying to find
a single-event write fault in the RL02 "circular" logic... no way
to do it with my 545 scope!
>If you have a limited budget, I would recommend putting the emphasis on a
>good scope - most used diagnostic tool on my bench.
I agree - the scope is the single most useful tool.
A Tek 7D01 is an old but simple logic analyzer plugin (16 bit, 10
ns sample rate) and can be inserted into several 7000 series
scopes when you're not using the vertical and timebase plugins.
It's perfect for debugging discrete logic. For microprocessor work
I'd prefer a 1240. There are obviously much better analyzers
available but for the money those two are pretty decent IMHO.
Again, make sure to get the pods. The 7D01 plugin can often be had
for $10 or less but the two pods and leads/clips can be several
times more expensive...
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