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Topic: Input on this oscilloscope please (Read 810 times) previous topic - next topic

Capio West

I'm curious. Wouldn't it make sense to add a Logic Analyzer to the tool bench, even if it means getting a cheaper/used O'scope?


retrolefty

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Wouldn't it make sense to add a Logic Analyzer to the tool bench


Logic analyzers are a rather specific instrument for specific problems limited to the digital domain. A good O-scope is much more general purpose and can be used in both the analog and digital domain.

So I would say one should first acquire the best O-scope one can afford and then later decide if more specialty test instruments are required. A good DVM and O-scope can fill a lot of needs and requirements, don't skimp on either.

Being a older then dirt type, I tend to favor the older vintage solid state O-scopes made by Tektronics from say the 70s on. I'm presently using a Tek 2213 but have used lots of other Tek models in the past. They can be picked up for very good prices on E-bay and such, although condition is sometimes hard to judge from ads. There are good user support forums for Tek scopes with access to lots of schematics, service manuals and leads on parts.

Lefty

Capio West

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Osgeld: one could argue that an arduino could be used as a logic analyzer
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retrolefty:  Logic analyzers are a rather specific instrument for specific problems limited to the digital domain.

Yes, okay. For my purposes I want to see the combination of about 10 digital input pins. I want to observe the timeline of switched states... graphically is good. My tek465b is only 2 channel.

Thanks to Osgeld's 'prompting'... I found post below. May serve well enough to forego buying USB-based or standalone LA.
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1250255591
But I just don't want to spawn a time-sink 'project' just to build tools though.

I trust this contributes to the OP as much as it helped my evaluation.

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