New Logic Analyser

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Brian Fairchild
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Posted by Brian Fairchild: Thu. Oct 22, 2020 - 01:47 PM
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I'm canvasing opinions on what logic analyser to buy.

 

I have a couple of Saleae Logics. Saleae support is amazing and I'd happily buy one of their new units but....they are not cheap.

 

If we go with the rule-of-thumb that the sample rate should be at least 5 times faster than the signal under test, then I'm looking for something with a sample rate of at least 400 megasample/sec. And something with at least 8 channels.

 

The Saleae Logic Pro 8 fits the bill perfectly. But I do need to consider other, cheaper, options. So...

 

*) DS Logic Plus. 400MHz sampling, 65% cheaper.

*) DS Logic U3 Pro 16. 1GHZ sampling, 16 channels and 40% cheaper.

*) Asix Omega. 400MHz sampling, 16 Channels and 40% cheaper.

 

Any other suggestions?

 

Anyone own one of the above?

 

 

Note: I have included that fact that I qualify for the reduced prices from Saleae.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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Learning and Information, General Electronics, Digilent, TechTools, ZEROPLUS, sigrok, Hantek, Teledyne LeCroy
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avrcandies
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Posted by avrcandies: Thu. Oct 22, 2020 - 03:29 PM
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get one with a built in CRT

 

here is an interesting 400MHz USB one...but have NOT used it.

https://www.ebay.com/itm/USB-Log...

 

Another (they also list one in the description at 500MHZ)

https://www.ebay.com/itm/LA2016-...

 

 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Oct 22, 2020 - 03:32 PM
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Brian Fairchild
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Posted by Brian Fairchild: Thu. Oct 22, 2020 - 04:01 PM
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avrcandies wrote:

get one with a built in CRT

 

No thanks! Although the ones I first used all had them. IIRC the first would have been a Philips unit and then a Dolch. I think it was the Dolch which had the real-time disassembler on it so that you could hook it up to a MPU buss and see what code was executing and what data was being accessed.

 

avrcandies wrote:

here is an interesting 400MHz USB one...but have NOT used it.

 

There's a lot of those about on eBay. I suspect that most all of them are clones of the genuine article.

 

 

avrcandies wrote:

Another (they also list one in the description at 500MHZ)

 

Thanks.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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avrcandies
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Posted by avrcandies: Thu. Oct 22, 2020 - 04:58 PM
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Although the ones I first used all had them  (CRTS)

Probably because there were no PC's and essentially no computer monitors (other than mainframes & DEC PDP, etc).

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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gchapman
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Posted by gchapman: Thu. Oct 22, 2020 - 07:33 PM
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Brian Fairchild wrote:
Any other suggestions?
Digilent, TechTools, ZEROPLUS Technology

 

DSLogic Series – DreamSourceLab

USB "Scope" Recommendation? | AVR Freaks (Digilent)

DigiView™ Logic Analyzer Overview (TechTools)

Review of the Zeroplus Logic Cube Pro | The Embedded Muse 399

 

"Dare to be naïve." - Buckminster Fuller

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alank2
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Posted by alank2: Thu. Oct 22, 2020 - 08:20 PM
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I've got experience with various Saleae models and also the Intronix LogicPort.  Some may think the LogicPort is getting a bit older, but it is still quite a capable analyzer.

 

They both do different things.  The Saleae's are streamers where the LogicPort has a 2K buffer I think.  It has compression, but not at the top speed (500 Mhz).  Essentially with the LogicPort you may have to setup triggering to get what you want (but all 34 channels @ up to 500 MHz), but with the Saleae you can start it, capture a bunch assuming your PC has memory, and then dig through it to find what you want.

 

Saleae is working on a new version of their software right now Logic2 that has some pretty nice improvements over the Logic1 software.  I like both versions.

 

I've not tried any of the lower prices ones on eBay, for me it is either the Saleae or the LogicPort.  You can get a decent deal on eBay on the LogicPort if you wait for the right one.

Autoprogrammer:

https://www.avrfreaks.net/forum/wts-standalone-pdiisp-auto-programmers

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gchapman
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Posted by gchapman: Thu. Oct 22, 2020 - 08:29 PM (Reply to #6)
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LogicPort USB Logic Analyzer - Embedded.com

 

"Dare to be naïve." - Buckminster Fuller

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Rodmcm
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Posted by Rodmcm: Sat. Oct 24, 2020 - 02:39 AM
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ScanaLogic

 

Doubles as a signal generator

 

https://www.ikalogic.com/kb/logi...

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12oclocker
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Posted by 12oclocker: Sat. Oct 24, 2020 - 03:12 AM
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I have the Saleae and the Intronix LogicPort, and I used to have an old school hardware unit. I recommend the Saleae, It can do more protocols than Intronix, it is more often updated, and in general I like its usability and GUI much better for my work flow.

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gchapman
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Posted by gchapman: Sat. Oct 24, 2020 - 10:43 AM (Reply to #9)
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sigrok has post-processing for LogicPort.

 

In sigrok that may meet the requirements :

 

Status | Intronix Logicport LA1034 - sigrok

Specifications | Intronix LogicPort PC-Based Logic Analyzer with USB Interface

...

Interpreted Protocols (included):

...

Protocol decoders - sigrok

 

edit :

Hantek 4032L USB Logic Analyzer (Circuit Specialists)

 

"Dare to be naïve." - Buckminster Fuller

Last Edited: Sun. Oct 25, 2020 - 06:08 PM
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angelu
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Posted by angelu: Sun. Oct 25, 2020 - 04:56 PM
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  I have LA5016 logic analyzer from Kingst for few years now and it works flawlessly.

 

  It has DDR memory so you no need USB3 or blazing fast computer. Mine is an Dual Core E5300 and no issues.

 

  One thing that I like about it that I did not see with Sigrok is that you can hover the mouse over a waveform and on the top right corner it tells the frequency, duty cycle and period. With Sigrok, I would need to use markers to measure periods. LA5016 has markers as well.

 

  The mouse was somewhere over the signal.

 

PIC32 based Ethernet Shield Arduino Uno hardware compatible

PIC32 based Ethernet Shield with Network Switch Arduino Uno hardware compatible

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avrcandies
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Posted by avrcandies: Sun. Oct 25, 2020 - 08:36 PM
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I have the Saleae and the Intronix LogicPort

I went to the website, it has been a few years...our lab had bought one of the logic analyzers for around $250 several years ago, I remember them being $200, $300, maybe $400 ....now they all seem to be double that or more. Maybe sales dwindled, forcing prices up.  it's nice when equipment prices go down, like scopes! 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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alank2
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Posted by alank2: Sun. Oct 25, 2020 - 08:58 PM
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The Saleae had two large price increases, but they have a deal where you can get a substantial discount if you are not a large company, you just have to look for it.  LogicPort's always come up on eBay for $100-$200 if you wait for one you can do well on it (if it doesn't come with the USB cable, you will need a USB A to USB A.)

Autoprogrammer:

https://www.avrfreaks.net/forum/wts-standalone-pdiisp-auto-programmers

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Gold Markclawson
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Posted by clawson: Mon. Oct 26, 2020 - 12:34 AM
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I bought a "Hobby Components" clone of Salae Logic some time ago. It's sat in a draw for years but I just had occasion to use it so dug it out, installed sigrok Pulseview, installed the Zagdig driver for it and was suitably impressed when it all "just worked". Not bad for something that cost about £5.
.
(i was using it to check a rotary encoder and it knew all about grey code)

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Brian Fairchild
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Posted by Brian Fairchild: Wed. Nov 18, 2020 - 11:34 AM
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Topic closure time..

 

 

...Logic Pro 16

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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avrcandies
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Posted by avrcandies: Wed. Nov 18, 2020 - 12:23 PM
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(i was using it to check a rotary encoder and it knew all about grey code)

Frank Gray wants to have a word with you. 

 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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