[sdiy] LabTool scope/analyzer

[rsdio at sounds.wa.com]

I've used the salae logic, and it can sometimes handle 24 MHz. It's  
like a crap shoot. The reason for the random fail is that the logic  
is designed using USB Bulk transfer instead of USB Isochronous  
transfer. Bulk guarantees delivery, like a hard drive, but the timing  
is not guaranteed - but since the logic has no storage, and timing  
delays result in loss of data and the end of your sample. If they'd  
used Isochronous, the timing would have been guaranteed not to get  
behind, and there would be no data loss. I spoke with the developers  
of the logic, and they are aware of the problems, but developing new  
USB firmware is not cheap or easy.

The Logic Sniffer - whether you get it from Dangerous Prototypes or  
Gadget Factory - is quite different. It can sample at 100 MHz or 200  
MHz. It does 16 channels at 200 MHz, and 32 channels at 100 MHz.  
There is internal storage, but it is limited. Fortunately, there are  
programmable triggers so that you can control the window of time that  
you look at with your available memory. There is also a compressed  
storage format that extends the time.

I used both the salae logic and Logic Sniffer in the development of  
the Soundplane.

Brian


On Nov 15, 2013, at 17:22, charlie wallace wrote:

There is no way the salae logic can properly capture at 24Mhz. I
haven't tried the logic16 version, that might do it, but those guys
are fast and loose with their numbers.

the inntronix is pretty great, i use it a lot.

the sump, especially the dangerous prototypes version is probably the  
best.
http://www.seeedstudio.com/depot/open-workbench-logic-sniffer- 
p-612.html $50





On Fri, Nov 15, 2013 at 1:16 PM, Ullrich Peter  
<Peter.Ullrich at kapsch.net> wrote:
> Hi!
>
> Regarding USB logic analyzers:
> I have 3 different USB logic analyzers at work:
>
> 1) The Intronix LA1034: fine as it goes up to 500 MHz and has 34  
> channels and nice protocol analyzers http://sigrok.org/wiki/ 
> Intronix_Logicport_LA1034
> Nice for capturing parallel busses (address, data, control) and  
> triggering on special addresses or event (read memory location 145h  
> for example)
>
> 2) The quite old Digiview DV100: 18 channels and 100MHz
> Used it very seldom... Was quite expensive for the limited number  
> of channel, speed and memory depth...
> http://www.digikey.com/product-detail/en/DV1-100/DV1-100-ND/565870
>
> not available any longer: newer models here:
> http://www.tech-tools.com/logic-analyzer-models.htm
>
> 3) The Saleae Logic: Only 8 channels at up to 24MHz but nearly  
> limitless memory dept as it samples in realtime to the PC and the  
> sample depth goes up to 2GB!!!
> Nice protocol analyzers included. I have to say that I use this  
> little analyzer the most. Very intuitive software, nice and small  
> and the memory depth is great!
> http://www.saleae.com/logic/
> for 149$ its a good buy!
>
> Ciao
> Peter
>
> http://www.ullrich.at.tt
>
>
> ________________________________________
> Von: synth-diy-bounces at dropmix.xs4all.nl [synth-diy- 
> bounces at dropmix.xs4all.nl]" im Auftrag von "MTG  
> [grant at musictechnologiesgroup.com]
> Gesendet: Freitag, 15. November 2013 17:57
> An: SDIY List
> Betreff: [sdiy] LabTool scope/analyzer
>
> Interesting combo of a 99 Euro add-on board for a 15 Euro dev kit:
> http://www.youtube.com/watch?v=ERygLExsYTE
>
> LabTool is an add-on board to LPC-Link 2 using features on the LPC4370
> to create a powerful development tool.
>
> - 11 channel logic analyzer
> - 2 channel oscilloscope
> - 11 channel digital signal generator
> - 2 channel analog signal generator
> - Open source software
>
> http://www.nxp.com/campaigns/cortex-m4/lpc-link2-lab-tool
> http://www.lpcware.com/lpclink2
>
> For my latest project I borrowed an Intronix LogicPort which is great
> (34 channels @ $400 USD) but the memory is not very deep.
>
> GB
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
>
>
> The information contained in this e-mail message is privileged and  
> confidential and is for the exclusive use of the addressee. The  
> person who receives this message and who is not the addressee, one  
> of his employees or an agent entitled to hand it over to the  
> addressee, is informed that he may not use, disclose or reproduce  
> the contents thereof, and is kindly asked to notify the sender and  
> delete the e-mail immediately.
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy