Realizing that it's not necessarily what one might put in the
"budget-friendly" range, I thought I'd plug both Pico Technology and
Saleae. I have a 4-channel USB DSO PicoScope (3000 series, ~$600-$2400
depending on options) and a 16-channel logic analyzer from Saleae (an
older, now discontinued digital-only model). They both work very well,
plus both offer various levels of API/SDK availability if you're keen on
writing your own logging or analysis code.
Saleae's current 16-channel analyzers are 50 MS/s MSOs, but the one I
have is not, so I can't speak to the quality of analog measurements.
The PicoScope 3000 series is 1 GS/s.
PicoScope 3000-series scopes are available in MSO form.
Both are USB devices that depend on a host PC for control and display.
$0.02,
-Brian
On 2/22/21 9:00 AM, John Vaughters via TriEmbed wrote:
Pete,
Which Rigol model do you own?
I very much agree with you. I don't want to plop $400-500 down just to get a
scope, then realize I really needed to plop$1000-1500 to get what I needed and
now had waste $400-500.
John Vaughters
On Sunday, February 21, 2021, 9:15:14 PM EST, Pete Soper via TriEmbed
<[email protected]> wrote:
If you think you might be starting to play a long game consider getting
a "mixed signal" 'scope that can capture, trigger on, and decode a set
of digital signals as well as providing analog measurements, and
consider I2C/SPI/UART/USART decoding essential, if only as an option
(i.e. don't drop the money for something that can't eventually decode
these dead common serial modes unless you know you're only dipping a toe
in). I went a long time with my Rigol without an "unavoidable use case"
for logic signals involved with debugging new hardware, but when those
use cases finally came around it was nice to have the capability and not
be looking around for another piece of equipment, most especially when
you need to see what's going on with several signals at once. In about
seven years I think I've topped out with two analog and seven or eight
digital signals with one set of gadgets. The integration of digital and
analog is a real plus, for instance where you need to jump around
between figuring out a noise issue vs something basically wrong with a
serial line like with I2C. And of course you can correlate analog such
as with A/D converters with digital signals feeding them to sort out issues.
-Pete
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