14 Mar
2023
14 Mar
'23
2:39 p.m.
On Mar 14, 2023, at 1:38 AM, Steve Lewis via cctalk
<cctalk(a)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