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

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nctnico:

--- Quote from: tv84 on February 26, 2024, 02:22:58 pm ---
--- Quote from: radar_macgyver on February 26, 2024, 12:55:46 am ---For example, if I leave the scope running for many days, it can get into a mode where the reference level indicator for the traces disappears, and the left and right borders of the screen start flashing, as if the traces are being overdrawn on top of the edges of the graticule. The only fix for this is to reboot the scope.


--- End quote ---

 :palm: Unacceptable on a R&S device.

--- End quote ---
Maybe some kind of milli-second timer overflow issue. A tell tale sign is that the problem occurs after about 49 days.

radar_macgyver:
Today I found my MXO44 is no longer showing the reference marker (the triangle with 'C1', 'C3') for the selected channel again (my bad, I had the sense inverted in my previous post). In the attached screenshot, I have CH1 and CH3 with the included 700 MHz probes connected to the probe comp terminal. When the screenshot was taken, CH1 was selected. Note that while CH3's reference indicator is shown, CH1 is not.

You will note that I have Settings->Appearance->'Show Labels' turned off (I find the labels distracting). On a hunch, I turned the setting back on, and used the touch-screen to toggle between CH1 and CH3 active, and both the channel reference markers are shown again. If I turn off the setting, they disappear again. Strangely, a reboot did *not* fix it this time, I have to keep the labels on to see the reference markers.

I've also forwarded this message to R&S customer support.

Not sure if I've had the scope powered for 49 days, but it has been left on continuously on the bench.

dav888:
interesting read.. seems like most scope vendors are stuck with old platforms

I might be wrong, but even the new R&S MXO5 series, 500 Mpoints memory isn't super impressive considering you can get on a modern laptop. I like what Aaronia is doing with dual USB 3.x ports to double the throughput.

just tried the MXO5 and sure, the update rate of 4.5m waveforms per second is high, but the user-interface makes it feel like a super-slow vintage computer, so even though you might be able to capture stuff, it feels like you're operating a vintage scope from late 90's

I can see a few brands listed in this thread. what are peoples opinion, 8 vs 10 vs 12-bit, who has the best UI (i.e. fast/smooth, not too much crappy touch ux with microscopic popup-dialogs and pc-buttons)

shabaz:
I think it's got a decent architecture. It's got (from what I can tell) a multi-core multi-tens-of-Gbps-throughput processor for its data plane, where more and more features can be added (I believe the MXO 5 uses two of them, i.e. the architecture can allow for paralleling in some fashion or other. A block diagram showing how acquisitions are processed and where features are run would be great to see!

I don't know Aaronia products (I'm on the lookout for a decent SDR), their interface requirement depends on how much RF bandwidth needs to be captured, and it's very likely they offload any significant processing onto the PC like many SDRs. Perhaps I'm wrong; the system requirement for their software seems quite basic; 2GB RAM, 1.6 GHz quad-core CPU.

I'm currently working with a NVIDIA Jetson board (funnily enough, troubleshooting it with an MXO4), and while the general processing cores on the NVIDIA chip (ARM) are nothing to write home about, the cores which will handle the actual data (CUDA cores) are more interesting, and data is processed without it having to pass through the ARM cores, once that data is in memory. For sure that's a different architecture too, I just bring it up as an example where an architecture can significantly differ from older PCs.

I've looked back at my initial notes/issues lists (with the first release of the software) and UI slowness didn't make my list, everyone has different expectations there, not denying that some scopes may have a smoother UI, and I find some parts of workflow could be improved (for instance, when saving logic captures, it's a hassle saving in several formats, I'd rather save all formats in one go). But I hope they do focus on features as much as possible, get them out the door since they appear to have a decent software release cycle, and UI speed isn't currently so slow to be noticeable when in the zone getting captures/measurements etc. The response to touch always feels extremely snappy to me, but of course the buttons/rotary controls are interfaced differently to that).

rbe:
New firmware version 2.1.3.2 has been released for those that own this piece of equipment.
Download link: https://www.rohde-schwarz.com/in/firmware/mxo4/
Release notes : https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/pdm/firmware/1335_5272_00/MXO4_Release_Notes_2.1.3.2.pdf

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