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Rigol HDO1000 and HDO4000 12bit oscilloscopes launched in China

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gf:
The mirror reminds me on the array returned by Matlab's/Octave's fft() function. It contains DC and the positive frequency bins in the first half of the array, followed by Nyquist and the negative frequency bins. For a real-valued signal, plotting1) the log magnitude of this array shows a mirrored spectrum, as we are seeing it here. However, FFT on scopes usually does not display any negative frequencies, but hides them. I would not a priori overstate the bug -- it could be an easy to fix careless mistake in the software.

1) E.g. plot(20*log10(abs(fft(samples))))

Martin72:

--- Quote from: 2N3055 on January 30, 2023, 08:43:04 pm ---.. But Rigol has a chance now to prove their mettle... or not. It's up to them.

--- End quote ---

I'm toying with the idea of getting the DHO1074, playing with it for a while, and giving it away again.
It costs only 1200€ in the rigolshop and would be here in a few days.
In the time I could again annoy the German Rigol support, as I had once done with the MSO5000. 8)
Seriously, it would be interesting to play a little bit with it.
I like to have things here instead of reading/watching and the 4000 is a little bit too expensive for just playing.
Although...if batronix would lend me one....

Fungus:

--- Quote from: mawyatt on January 30, 2023, 08:24:02 pm ---They did spend significant $ on the custom chip developments, so maybe Rigol decided to release early to save debugging $

--- End quote ---

I think last summer the marketing department planned a November release, because November/December is when most people buy oscilloscopes.

Then... November came along and it wasn't 100% finished because software never is. The rest is history.

Anybody who's ever worked in a company which develops products will have lived through this story ^^^

2N3055:

--- Quote from: gf on January 30, 2023, 08:47:50 pm ---I would not a priori overstate the bug -- it could be an easy to fix careless mistake in the software.


--- End quote ---

Well, :-DD that is a definition of a software bug. ...

2N3055:

--- Quote from: Fungus on January 30, 2023, 09:26:11 pm ---
--- Quote from: mawyatt on January 30, 2023, 08:24:02 pm ---They did spend significant $ on the custom chip developments, so maybe Rigol decided to release early to save debugging $

--- End quote ---

I think last summer the marketing department planned a November release, because November/December is when most people buy oscilloscopes.

Then... November came along and it wasn't 100% finished because software never is. The rest is history.

Anybody who's ever worked in a company which develops products will have lived through this story ^^^

--- End quote ---

I agree.. That is what happened. Now we wait and see.. Fact that they rushed it out is one thing.
But if people keep buying it like crazy despite bugs, because it's cheap, they have very little incentive to fix things..

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