> On Mar 14, 2023, at 1:38 AM, Steve Lewis via cctalk <cctalk@classiccmp.org>
> wrote:
>
> ...
> Anyway, as an option slightly cheaper than the Saleae, I'm trying the
> 32-channel version of the DreamSourceLab U3Pro32. It's not horrible, I've
> 24 pins hooked up so far. I debated on if 2x16's would be better.
> Amazon is good about returns, but this little DSL probe is good enough,
> I'll be keeping it.
>
> DreamSourceLab DSLogic U3Pro32 USB-Based Logic Analyzer with 1GHz Sampling
> Rate, 2Gbits Memory, USB 3.0 Interface, 32 Channels
Thanks everyone. Some reactions to what I heard:
The U3Pro32 happens to be what I was looking at when I spotted the link to
sigrok.org. (Does anyone here have experience with that software?) Among
other things, it has a long list of supported devices, a lot of logic analyzers
of various specs, many that look like the sort of low cost choices I was
looking for. I saw DreamSourceLab, Hantek, and a bunch of others offering 32
bit wide analyzers.
On HP: yes, perhaps. I used one of those back at DEC, in the mid 1980s. Nice
machine, but my suspicion is that I'd run into the small memory problem again
that plagues me with the Philips/Fluke analyzer I use right now.
I can see lots of 16 channel options including mixed oscilloscopes. That
doesn't work for what I need, because I have (a) a control interface (EPP mode
parallel port, so that's about 12-14 wires right there) plus the resulting
internal signals I want to see, plus a serial data link going the other way.
32 channels is what I have right now and that's comfortable; 16 would mean a
lot of fiddling around to keep switching which subset I can see. Also, I have
a Tek DAS602 so a new scope isn't all that appealing, especially the lower cost
ones (much less bandwidth, though admittedly more memory) -- and while Rigol is
less expensive than Tek it still has a fairly substantial price tag.
I noticed the sigrok.org devices list mentions one that is open source
hardware, that sounds a bit like what Sytse was talking about.
paul
