mikroElektronika

Anyone have a recommended USB Logic Analyzer?
I have researched many. I am not happy with ZXBEE.

I would like UART, SPI, I2C translation ability.

The fastest and most accurate I have found is LogicPort.

What are your suggestions.

Thanks in advance!

Regards,
Doyle

Not really one of my stronger skills, logic is, but have you looked at PoScope ?
It's also on the Circuit ED website.

I went with the LogicPort from PCtestinstruments.com
Very fast! Outstanding results!
A must for working the all aspects of timing and data analysis.

Will find glitches down to 4ns!

Hi Maleche,
Looked at your buy, and I'm envious
I went for the PoScope, sorry Warren, local guys were cheaper
As a 'scope, sucks, max 20KHz, but then, the triggering function on this is outstanding, and it is perfect for Radio Control, RS232, 485, SPI.
So maybe it doesn't suck
The manual, well, I had to play a lot to suss out some of the functions.
The logic analyzer decodes RS232 quite adequatly, once again, the manual leaves a bit to the imagination.
The recorder function works fine, and wierdly, the Spectrum Analyser sees up to 200KHz, without problem, so maybe I'm doing something wrong with the 'scope part.
Bottom line, I don't regret buying this product, I'm doing a lot of RC stuff lately, and even a 50MHz Tektronix analogue scope cannot resolve the pulse train like the PoScope.
My two cents

The LogicPort is exceptional!

I can bit-bang anything! I discovered many programming issues with timing that I had, then corrected them for speed. The RS232, SPI, I2C translator is great. I can program my own for CAN, 1-Wire, Manchester, and LonWorks (Invensys protocol).

If you can spare the change or save up for this LogicAnalyzer, you will not be dissapointed. I have a USBEE AX and could not get it to work correctly. I will sell it. I also have a Tektronix TDS 210.

Keep programming!

Doyle

No hard feelings here...

BTW, the scope is relatively slow but should work accurately to at least 100KHz. The protocol analysis features are quite good and useful for PIC's.

Hi Warren, I used a sinewave at 20KHz, and that pretty much was the limit
However, this box triggers fantastically well on digital pulses, and in just one day I've done some RC code that I would be battling with, using a normal 'scope for debugging

Hi Xor,
I can really recommend the PoScope, as a low budget instrument, it exceeded my expectations.
In fact, without it, my latest dds would never have been completed.
So there, you can quote me

LOGICPORT1+
$389.00ea.

http://www.web-tronics.com/loloanl.html

I said "Low Budget "

Again with Logic Analyzers choice...

I found LogicPort http://www.pctestinstruments.com/index.htm
and
Digiview DV1-100 http://www.tech-tools.com/dv_dv1.htm

LogicPort has 34 Inputs, a programmable Threshold and can go up to 500MHz . The negative point is that it has a very little buffer 2048 Samples buffer (2Kb).

DigiView has only 16 inputs, a fixed Threshold (1.6volt) but has a very big buffer 128Kb (128000) ....

For their softwares they are about equivalent in functionnalities with protocol analyzer (interpreters). LogicPort adds support for sampling multiplexed bus data.

the prices are about the same .. arround 450$ (LogicPort is sold without probes, if you add them you got the same price as Digiview).

I'm personnaly more oriented to LogicPort, especially for the programmable Threshold, this can be very nice for low power circuits and for glitchs analysis (or to avoid noise measures' perturbation).

For standard works, means working with MCU to control GLCD, analyzing RS232 stuff, SPI stuff, PWM for servo control, ... at frequencies arround 10Mh or 20 MHz ... what do you suggest ?

Best regards.
octal

I have this one:

http://www.hobbylab.us/default.aspx

And the funny thing is they are almost exact, playing around with the hobby one, I was able to load the PoScope firmware on the hobbylab hardware and they both work just about exact, the price is a different story:)

Also I recommend everyone making one of these; I use it daily!

http://mondo-technology.com/super.html

Enjoy,

-Marc

Thanks for your answer Marc, but the PoScope and other similar products have a very low bandwidth for my needs ... I want to be able to do measures arround 10 to 20 MHz, so for obvious reasons I'l not buy a tool that can do at max 8Mhz ...

As for my needs, I really want to buy a semi-professional tool, in order to not be limited by its possibilities for near future work.

Regards
octal

The HobbyLab software looks exactly like that from PoScope......

Hey Octal, what you want, new, you are going to have to add another zero or two to the price of PoScope

Hi, sorry but this thread is deviating from my previous question:

I already mentioned in previous post that I want to know if anyone can tell me if he has experience with LogicPort or Digiview 100 ... they are semi professionnal tools, and as new products they costs about 450 US$ only!!!

I do not have the means and possibilities to buy Agilent or HP analyzers that costs 6000 or 7000$ or above ... and these tools are not far beyond of my modest needs. All I want is to be able to analyze protocols and comms at about 10 to 20 MHz.

Regards
octal