Comments on: Logic Analyzer: fantastic! http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/ Computing stuff tied to the physical world Mon, 06 Feb 2012 13:55:24 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: jcw http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-13 jcw Wed, 04 Feb 2009 10:05:33 +0000 http://jeelab.wordpress.com/?p=342#comment-13 <p>Yes - I2C, SPI, UART included.</p> Yes – I2C, SPI, UART included.

]]> By: Rajesh Kovvuri http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-12 Rajesh Kovvuri Tue, 03 Feb 2009 15:14:14 +0000 http://jeelab.wordpress.com/?p=342#comment-12 <p>Thanks for your reply. Yup, i guess the 80mhz was the culprit. There were way too many samples to capture the 1khz signal. Looks like about 3x sampling should be sufficient. Another question: Did the I2c, SPI and the UART decoders come with the logic analyzer ?</p> <p>The printed manual is no good. I had to download a 16064U's manual and figure what the "enable" in the logic analyzer meant.</p> <p>Thanks!</p> Thanks for your reply. Yup, i guess the 80mhz was the culprit. There were way too many samples to capture the 1khz signal. Looks like about 3x sampling should be sufficient. Another question: Did the I2c, SPI and the UART decoders come with the logic analyzer ?

The printed manual is no good. I had to download a 16064U’s manual and figure what the “enable” in the logic analyzer meant.

Thanks!

]]> By: jcw http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-11 jcw Tue, 03 Feb 2009 08:36:28 +0000 http://jeelab.wordpress.com/?p=342#comment-11 <p>Weird. I don't remember having any trouble with it. DId you plug the cables in on the proper side? The connector has two rows, but only the side marked A0 etc actually works (I think the other row is for the 32-channel version). Also, you can manually trigger it to press the Start button - if that doesn't work for you, I suggest contacting the people you got it from for support.</p> <p>FYI, sampling a 1 KHz signal at 80 MHz only makes sense with compression on (each signal level takes 80,000 samples). Try a lower rate first, i.e. say 5..10x the signal you're trying to watch.</p> Weird. I don’t remember having any trouble with it. DId you plug the cables in on the proper side? The connector has two rows, but only the side marked A0 etc actually works (I think the other row is for the 32-channel version). Also, you can manually trigger it to press the Start button – if that doesn’t work for you, I suggest contacting the people you got it from for support.

FYI, sampling a 1 KHz signal at 80 MHz only makes sense with compression on (each signal level takes 80,000 samples). Try a lower rate first, i.e. say 5..10x the signal you’re trying to watch.

]]> By: raj http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-10 raj Tue, 03 Feb 2009 05:54:37 +0000 http://jeelab.wordpress.com/?p=342#comment-10 <p>Hi:</p> <p>I just bought one today. going crazy on how to get the thing working. Can you help?</p> <p>I am using the Port A0 to sampling a simple 1khz oscillator at 3.0v. I set the internal sampling to 80Mhz and try all the trigger and the enable(what is this enable?). No luck. I get the window at the bottom saying "waiting" and i dont see any signals. Any help appreciated.</p> <p>Thanks!</p> Hi:

I just bought one today. going crazy on how to get the thing working. Can you help?

I am using the Port A0 to sampling a simple 1khz oscillator at 3.0v. I set the internal sampling to 80Mhz and try all the trigger and the enable(what is this enable?). No luck. I get the window at the bottom saying “waiting” and i dont see any signals. Any help appreciated.

Thanks!

]]> By: jcw http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-9 jcw Wed, 28 Jan 2009 00:17:24 +0000 http://jeelab.wordpress.com/?p=342#comment-9 <p>First impression is that it works as expected. I got the software from <a href="http://www.eleshop.nl/zeroplus-usb20-logic-analyzer-a-p-298.html" rel="nofollow">Eleshop</a>, it runs in demo mode when no device is found. The 100 MHz sampling plus hardware compression is great.</p> First impression is that it works as expected. I got the software from Eleshop, it runs in demo mode when no device is found. The 100 MHz sampling plus hardware compression is great.

]]> By: Rajesh Kovvuri http://jeelabs.org/2009/01/27/logic-analyzer-fantastic/#comment-8 Rajesh Kovvuri Tue, 27 Jan 2009 23:31:50 +0000 http://jeelab.wordpress.com/?p=342#comment-8 <p>Hi:</p> <p>I am planning on buying this logic analyzer in the US. seems like a really good price for $120. Is it really worth it?</p> <p>what were your impressions? I think the good selling point is the sampling frequency. How's the software interface ?</p> <p>sorry for so many questions.</p> <p>Thanks! -raj</p> Hi:

I am planning on buying this logic analyzer in the US. seems like a really good price for $120. Is it really worth it?

what were your impressions? I think the good selling point is the sampling frequency. How’s the software interface ?

sorry for so many questions.

Thanks! -raj

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