Products > Test Equipment

First picture on EEVblog of the new R&S MXO4 series oscilloscope :)

<< < (45/60) > >>

shabaz:
Hello,

From my perspective, I liked that the display could be set up to pack a lot of SPI decode visually on the screen, which is useful for data transactions of many dozens of bytes. Where a data transaction is even longer, for instance, involving hundreds of bytes (perhaps during a file read or write in an SPI Flash file system) then it was able to comfortably automatically decode while zoomed out to the view of the entire transactions.
The protocol export functionality is also very impressive, in decent formats (particularly HTML and Python formats), allowing for further analysis (e.g. generation of ping-pong diagrams or for profiling).
See here for an example of SPI decode (at time 23 minutes 33 seconds, if it doesn't automatically start from that point):


The two screenshots show the scaling of the protocol decode view.

pdenisowski:

--- Quote from: luudee on July 04, 2023, 10:38:10 am ---It cannot decode a simple SPI interface.

It also has issues triggering properly. Yes, I had the voltage levels/threshold set correctly. I can see transitions and manually decode the correct values, but I was expecting the MXO to do that. I observed the same failures in both Logic Analyzer mode and analog scope mode.
--- End quote ---

This is very surprising to me:  I've worked with the SPI decode extensively and it works very well.  In fact, here's a short video I made a few weeks ago showing the MXO4 SPI decode in order to help diagnose issues people here were having decoding the SPI output of the Batronix demo board using other (non-MXO4) oscilloscopes:

https://www.eevblog.com/forum/testgear/new-scope-demoboard-from-batronix/msg4899155/#msg4899155

I did an entire video showing how to configure and decode SPI on the MXO4



I can post lots of other examples (screenshots, videos) showing the SPI decode on the MXO4 using a variety of SPI signal sources.  It's worked every single time I've used it.


pdenisowski:
Here's a video I made back in March while I was working on the "Understanding SPI" and "Decoding SPI" videos - MXO4 correctly (and easily) decoding SPI coming from a Raspberry Pi connected to a 7 segment display



and a screenshot of the MXO4 decoding SPI traffic correctly at > 40 Mbps  (also made back in March).  The hex values are just "PAUL" in ASCII over and over :)  This one was made using the logic probes instead of analog probes.

pdenisowski:

--- Quote from: luudee on July 04, 2023, 10:38:10 am ---
Overall, the User Interface is very slow and buggy. The unit freezes randomly, and requires a power cycle. Simple adjustments, like horizontal zoom, can freeze the unit for up to 15 seconds, before it updates the screen.

--- End quote ---

Which FW version were you using?  This also is very surprising to me.

It sounds very much like the unit you were using was not current hardware or firmware: we have many, many MXO4 users and there are many independent reviews of the MXO4, including Dave's own review (and he is absolutely not shy about pointing out problems :)) and they are all overwhelmingly positive and without the issues you are reporting.

luudee:

@Paul,

I don't know what firmware the unit had that I was testing.

I spent 7 days trying to make it decode a perfectly valid SPI stream (very long 256K transaction), and could not make it work.

I stand by my review.  It was not able to do any decoding, neither analog nor digital.

I am glad to see you guys are looking in to it.

luudee


Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod