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

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EV:
After uninstalling BW 300M option BW has changed from 300 MHz to 240 MHz. Rise time has changed from 1.15 ns to 1.38 ns and over shoot has changed from 11.0 % to 8.5 %.

AndersAnd:

--- Quote from: marmad on December 31, 2013, 02:06:18 am ---
--- Quote from: XaS on December 22, 2013, 09:21:11 am ---I have similar problems when using the multi function knob. Also, it sometimes skips several entries or in my case causes the cursors to jump over the desired loactions. All in all, the knob is very unprecise in my experience.

--- End quote ---
I have very few problems with the multi-function knob skipping (and I have big hands) because of developing a specific way of using it when selecting things. Of course, when using it only for adjustment (like intensity), you can just rotate it normally - but if you want to experience very few skips when selecting, you need to develop a special method such as the following:

It has everything to do with the way you grip it (see image): my thumb is on the bottom edge of the knob front, while my index finger is on the top edge at the very back of the knob (snug against the case), with my hand supported by my 3 free fingers. The knob is turned precisely with opposing motions of the thumb and index finger (their positions don't change), and when the desired selection is reached, my grip tightens slightly with my index finger pushing slightly down and back against the case - while the thumb pushes slightly up and inward - essentially locking the knob from rotating during the click.

--- End quote ---
This got me thinking about when Steve Jobs said people were holding it wrong when customers complained about poor iPhone antenna signal.  >:D :-BROKE



Maybe a new workshop mug to remind people to hold their scope knob correctly could come in handy.



And a new slogan idea for Dave's EEVblog T-shirts.

PA0PBZ:

--- Quote from: EV on December 31, 2013, 08:39:39 am ---After uninstalling BW 300M option BW has changed from 300 MHz to 240 MHz. Rise time has changed from 1.15 ns to 1.38 ns and over shoot has changed from 11.0 % to 8.5 %.

--- End quote ---

You reversed the picture titles.

AndersAnd:

--- Quote from: PA0PBZ on December 31, 2013, 10:20:36 am ---
--- Quote from: EV on December 31, 2013, 08:39:39 am ---After uninstalling BW 300M option BW has changed from 300 MHz to 240 MHz. Rise time has changed from 1.15 ns to 1.38 ns and over shoot has changed from 11.0 % to 8.5 %.

--- End quote ---
You reversed the picture titles.

--- End quote ---
Don't think so, the 300 MHz picture has faster rise time [1.148 ns] than the 200 MHz one [1.375 ns] as it should.

PA0PBZ:

--- Quote from: AndersAnd on December 31, 2013, 10:27:17 am ---
--- Quote from: PA0PBZ on December 31, 2013, 10:20:36 am ---
--- Quote from: EV on December 31, 2013, 08:39:39 am ---After uninstalling BW 300M option BW has changed from 300 MHz to 240 MHz. Rise time has changed from 1.15 ns to 1.38 ns and over shoot has changed from 11.0 % to 8.5 %.

--- End quote ---
You reversed the picture titles.

--- End quote ---
Don't think so, the 300 MHz picture has faster rise time [1.148 ns] than the 200 MHz one [1.375 ns] as it should.

--- End quote ---
After having a coffee and looking again you are right, it's just that the preview of the 200 Mhz one looks faster and I went wrong from there.  :palm:

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