<div><div dir="auto">Hackaday has good primers/info on cheap logic analysers. Like this:</div><div dir="auto"><br></div><div dir="auto"><a href="https://hackaday.com/2017/02/13/dummies-guide-to-reverse-engineering/">https://hackaday.com/2017/02/13/dummies-guide-to-reverse-engineering/</a><br></div><div dir="auto"><br></div><div dir="auto">I think they did a post on one that was like $22 USD that got a decent review. </div><br><div class="gmail_quote"><div>On Thu, Dec 28, 2017 at 02:11 Jay Schwichtenberg <<a href="mailto:jschwich53@comcast.net">jschwich53@comcast.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">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.<br>
<br>
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.<br>
<br>
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.<br>
<br>
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.<br>
<br>
Jay S.<br>
<br>
-----Original Message-----<br>
From: Michael E Caloroso [mailto:<a href="mailto:mec.forumreader@gmail.com" target="_blank">mec.forumreader@gmail.com</a>]<br>
Sent: Wednesday, December 27, 2017 10:36 PM<br>
To: Jay Schwichtenberg<br>
Cc: Michael Zacherl; SYNTH DIY<br>
Subject: Re: [sdiy] Logic Analyzers<br>
<br>
I love the old Tektronix 7xxx modular scopes. One of their plugin<br>
modules I have for my 7904 is the 7D01 logic analyzer with 7D02<br>
formatter. Yes they're only 16 bit with 1K of sample memory but it<br>
has been enough for anything I have had to tackle. The cool thing is<br>
you can use the word recognizer to trigger the horizontal base,<br>
allowing you to inspect an aperiodic signal in the analog domain.<br>
<br>
Yes it's 1970s technology. But Tektronix stuff back then are built like a tank.<br>
<br>
MC<br>
<br>
On 12/27/17, Jay Schwichtenberg <<a href="mailto:jschwich53@comcast.net" target="_blank">jschwich53@comcast.net</a>> wrote:<br>
> I got the Saleae Logic 16 (not the plus) quite a while ago and it was<br>
> inexpensive. It does not have an elaborate/state machine triggering but if<br>
> you know how to use it, it is still a powerful tool.<br>
><br>
> A lot of oscilloscopes have options to do various forms of bus decode too.<br>
><br>
> I'm familiar with the Tektronix MSO/MDO scopes that have those options. But<br>
> the Tek scopes are expensive and the EMBEDDED (I2C, SPI), SERIAL (what most<br>
> people call RS232) and AUDIO (I2S, TDM) keys are expensive also. They do<br>
> give decent LA functionality with limited state machines to do more complex<br>
> triggering and deep sample buffers. If I had lots of money I'd go that route<br>
> since I know those instruments and can use them in my sleep.<br>
><br>
> You can get a cheap Chinese scope like the Rigols and unlock them to get<br>
> access to their bus decode and triggering options. But if you do that you<br>
> void the warranty.<br>
><br>
> Jay S<br>
><br>
> -----Original Message-----<br>
> From: Synth-diy [mailto:<a href="mailto:synth-diy-bounces@synth-diy.org" target="_blank">synth-diy-bounces@synth-diy.org</a>] On Behalf Of<br>
> Michael Zacherl<br>
> Sent: Wednesday, December 27, 2017 6:23 PM<br>
> To: SYNTH DIY<br>
> Subject: [sdiy] Logic Analyzers<br>
><br>
> In the not so distant future I’ll be probably in the market for a not too<br>
> expensive logic analyser.<br>
> Just browsed the Saleae site, looks good at the first glance.<br>
> What’s too have? What’s too avoid, feature-wise?<br>
> Thanks - m.<br>
><br>
>> On 28 Dec 2017, at 01:10, Jay Schwichtenberg <<a href="mailto:jschwich53@comcast.net" target="_blank">jschwich53@comcast.net</a>><br>
>> wrote:<br>
>><br>
>> Also having something like a cheap logic analyzer or scope that decodes<br>
>> serial, I2C or SPI will save you a lot of time trying to track down bus<br>
>> issues. I have an older saleae and that has saved my ass so many times<br>
>> when<br>
>> doing embedded stuff.<br>
><br>
><br>
><br>
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</blockquote></div></div>