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REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol

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Hydrawerk:
Well, at Agilent DSOX2002A you cannot set dots. Rigol is better at this.  :-//

marmad:

--- Quote from: Evi on April 22, 2013, 07:10:54 am ---BTW. Does anybody succeed with Rigol support. I sent numerous mails to support@rigol.com and from the feedback form from Customer Center. It seems they are in permanent meditation or dead.

--- End quote ---

From what I've read, people have had varying levels of success. In some areas, it seems Rigol is quick and responsive to their customers - in other areas, not so much. I've had success communicating to Rigol through my dealer - which is sometimes the better path to take than directly.

MikeR:

--- Quote from: marmad on April 22, 2013, 01:57:18 pm ---
--- Quote from: MikeR on April 22, 2013, 01:38:46 pm ---Are you able to obtain waveform data that is 2GS/sec ? Everything Ive tried results in a file containing 1GS/Sec data. Ive set horizontal to max, memory depth to 56Mpoints, 14, 1.4, aliasing on and off - scope says 2GS/Sec on the display but always outputs 1GS/sec to the wavefile. Acquire mode is normal.

To check the scope. It "seems" to be sampling at 2GS/sec. I generated a 10 - 950 Mhz sine wave sweep at -20dBm and it displayed it on the FFT. Its a bit iffy above 200 Mhz.
--- End quote ---

To check the sampling rate, all you have to do is STOP acquiring when it displays '2GSs/s', then change the timebase to the smallest possible (e.g. 5ns), switch 'Display' -> 'Vectors' to 'Dots', then count the actual sample points. 2GSa/s means a 500ps acquire time for the ADC, so at 5ns/div, you should see 10 dots per div. If you don't, then I would imagine you have a technical problem.

--- End quote ---

The scope is sampling at 2GS/Sec single channel dual its 1GS/Sec. At 2GS/sec 10 dots are show after single run at 5ns. It will easily display e.g a 400 Mhz sine wave. The problem is the scope doesn't save that 2GS/sec capture to the wfm file. Theres decimation going on and it saves 1 Gs/Sec data. (Which is still a 500Mhz spectral chunk)

Theres two possibilities, 1. the scope does decimate and saves 1GS/sec waves, or 2. the tool Im using to view the waveform is parsing the binary data incorrectly. I noticed the wfm file for the DS2072 isnt the same as the DS1052E. It contains preamble. Either case Ill check with the baudline author.


-Mike.


 

marmad:

--- Quote from: MikeR on April 22, 2013, 03:17:09 pm ---Theres two possibilities, 1. the scope does decimate and saves 1GS/sec waves, or 2. the tool Im using to view the waveform is parsing the binary data incorrectly. I noticed the wfm file for the DS2072 isnt the same as the DS1052E. It contains preamble. Either case Ill check with the baudline author.

--- End quote ---
I'm guessing it's almost certainly #2 - there wouldn't be any logical reason for #1 (except a bug). And yes, the WFM format has been drastically changed - and there is no published documentation about it - typical Rigol/Chinese behavior which pisses me off. And they appear to have changed it even some more in the latest firmware version (01.00.00.03)!

We are currently working on documenting the format - so that conversion routines can be written.

BTW, if you want to know what version of firmware you're running, you need to use a specific sequence of buttons. Read the instructions at the bottom of this post.

Evi:

--- Quote from: marmad on April 22, 2013, 02:29:07 pm ---
--- Quote from: Evi on April 22, 2013, 07:10:54 am ---BTW. Does anybody succeed with Rigol support. I sent numerous mails to support@rigol.com and from the feedback form from Customer Center. It seems they are in permanent meditation or dead.

--- End quote ---

From what I've read, people have had varying levels of success. In some areas, it seems Rigol is quick and responsive to their customers - in other areas, not so much. I've had success communicating to Rigol through my dealer - which is sometimes the better path to take than directly.

--- End quote ---
Thanks for answer, marmad.
Yes it is. I got all the help from Anna Lewandowska from Testwall. But it seems not to be a good way to disturb her any time I need assistance. She already spent a lot of  time and efforts to deliver the device from Ireland to Moscow. DHL service is absolutely inadequate in my country.

So, if I am a registered customer, why I could not get the support from the only place where I registered?
BTW. They suggest me to visit their Munich office :)

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