[sdiy] Logic Analyzers

Peter Pearson electrocontinuo at gmail.com
Thu Dec 28 09:22:38 CET 2017


Hackaday has good primers/info on cheap logic analysers. Like this:

https://hackaday.com/2017/02/13/dummies-guide-to-reverse-engineering/

I think they did a post on one that was like $22 USD that got a decent
review.

On Thu, Dec 28, 2017 at 02:11 Jay Schwichtenberg <jschwich53 at comcast.net>
wrote:

> The 7K stuff in its day was some of the best you could get. With the
> plugins you could configure it to what you wanted. To me the Tek 465 was
> the best product they made. I'd used one for years as a bench and field
> scope.
>
> Hard part is once you've used a digital DPO/MSO/MDO 3K/4K it's hard to go
> back. Really nice to turn on measurements and get voltage and time
> measurements without counting divs and multiplying.
>
> Now days I have dreams about the 5 Series MSO. Takes a bit to get use to
> the touch screen but having 8 channels on a big screen is sweet.
>
> I had a Tek 564 storage scope that was tube based storage scope. That was
> probably built in the early 60s and was still running when I got rid of it
> a few years ago. All point to point wiring on terminal strips and silver
> solder.
>
> Jay S.
>
> -----Original Message-----
> From: Michael E Caloroso [mailto:mec.forumreader at gmail.com]
> Sent: Wednesday, December 27, 2017 10:36 PM
> To: Jay Schwichtenberg
> Cc: Michael Zacherl; SYNTH DIY
> Subject: Re: [sdiy] Logic Analyzers
>
> I love the old Tektronix 7xxx modular scopes.  One of their plugin
> modules I have for my 7904 is the 7D01 logic analyzer with 7D02
> formatter.  Yes they're only 16 bit with 1K of sample memory but it
> has been enough for anything I have had to tackle.  The cool thing is
> you can use the word recognizer to trigger the horizontal base,
> allowing you to inspect an aperiodic signal in the analog domain.
>
> Yes it's 1970s technology.  But Tektronix stuff back then are built like a
> tank.
>
> MC
>
> On 12/27/17, Jay Schwichtenberg <jschwich53 at comcast.net> wrote:
> > I got the Saleae Logic 16 (not the plus) quite a while ago and it was
> > inexpensive. It does not have an elaborate/state machine triggering but
> if
> > you know how to use it, it is still a powerful tool.
> >
> > A lot of oscilloscopes have options to do various forms of bus decode
> too.
> >
> > I'm familiar with the Tektronix MSO/MDO scopes that have those options.
> But
> > the Tek scopes are expensive and the EMBEDDED (I2C, SPI), SERIAL (what
> most
> > people call RS232) and AUDIO (I2S, TDM) keys are expensive also. They do
> > give decent LA functionality with limited state machines to do more
> complex
> > triggering and deep sample buffers. If I had lots of money I'd go that
> route
> > since I know those instruments and can use them in my sleep.
> >
> > You can get a cheap Chinese scope like the Rigols and unlock them to get
> > access to their bus decode and triggering options. But if you do that you
> > void the warranty.
> >
> > Jay S
> >
> > -----Original Message-----
> > From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of
> > Michael Zacherl
> > Sent: Wednesday, December 27, 2017 6:23 PM
> > To: SYNTH DIY
> > Subject: [sdiy] Logic Analyzers
> >
> > In the not so distant future I’ll be probably in the market for a not too
> > expensive logic analyser.
> > Just browsed the Saleae site, looks good at the first glance.
> > What’s too have? What’s too avoid, feature-wise?
> > Thanks - m.
> >
> >> On 28 Dec 2017, at 01:10, Jay Schwichtenberg <jschwich53 at comcast.net>
> >> wrote:
> >>
> >> Also having something like a cheap logic analyzer or scope that decodes
> >> serial, I2C or SPI will save you a lot of time trying to track down bus
> >> issues. I have an older saleae and that has saved my ass so many times
> >> when
> >> doing embedded stuff.
> >
> >
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at synth-diy.org
> > http://synth-diy.org/mailman/listinfo/synth-diy
> >
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at synth-diy.org
> > http://synth-diy.org/mailman/listinfo/synth-diy
> >
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20171228/0ec6e1bf/attachment.htm>


More information about the Synth-diy mailing list