Fellow forum members, RTB owners, Rich,
So, I took the plunge and ponied up the equivalent of $4000 for a 4 channel 200MHz + PK1 package + Digital channels, upgrading from my trusty old 1054Z. I am perfectly aware that this is a brand new scope model, and that it will be some time until the last bug has been hunted out of it. I chose to factor in the reputation of Rohde & Schwarz brand, as well as their pride in the equipment they manufacture, into my purchasing decision. So I am quite confident that they will step up the game and make this scope as great as it has the potential to be (right Rich?).
Anyhow, I've had the scope for almost a week now, running the latest 2.0 software just released. So I thought I'll contribute with a few bugs I've noted.
1. Lost waveform 1
Set the scope to Run mode and trigger set to Norm (not Auto). Once a trigger and waveform is acquired, hit the zoom button - without first hitting stop - and watch the waveform disappear after a fraction of a second. The opposite fails as well, capture in zoom and go back to normal view also clears waveform.
2. Lost waveform 2
Also in Run mode, Normal trigger; change horizontal scale also clears waveform, unless stop is pressed before. Probably the same bug as above.
3. Single capture in Auto trigger mode.
The "auto" feature of auto seems to trigger a one-shot when in single mode, essentially wasting the trigger on random waveform without trigger.
So, with no input active on a channel and a trigger level of a few volts, scope in "Run" and "Auto"
mode. Hit "Single" and watch the scope capture a zero-level waveform without trigger point.
4. Counter Threshold goes bananas
Feed a 400mV PP, 10 KHz square wave into the scope, set vertical scale to 200mV/div, threshold at 200 mV (Find Threshold), Hysteresis medium.
Set vertical scale to 50µs/div and increase step by step. Note a glitch at 1ms/div. At 100ms/div, threshold goes to 62,92V and the Counter stops working. Also, try to start at horizontal scale 100 ms/div, change down to 50 mv/div. Threshold value goes above the roof again.
On an additional note, I find the Persistence feature really not doing it's job properly. When facing a rare glitch in the waveform, it will shop up as a shadow on the screen, which is fine. However, the persistence setting doesn't seem to affect it's brightness, only the brightness of the regular waveform. Until 100% brightness is reached, then the glitches are displayed in full brightness. I do have a problem reproducing this though, so I'm a bit reluctant to call it a bug at this stage.
Also a couple of feature requests:
Search in zoom mode; it would be great if the zoomed in area followed the search selection, i.e when rotating the selection knob. And a next/prev button besides the search results list would be an improvement.
I think the history (segmented memory) is one of the features that makes this scope stand up above the crowd. It would be super-awesome if it would be possible to search for stuff in the history, similar to how search in waveform works.
Toolbar (upper left): I miss the ability to put the Counter there, I use that a lot, and also the History. Funny, since the Meter is there as well as Search (which also has a dedicated button). Why can some functions be put there but not others?
Don't get me wrong, this is not intended as a whine and complain post; I love my new scope. And if I made some user errors in the reports in this post, please correct me.
--/Peter
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