| Products > Test Equipment |
| REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol |
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| marmad:
--- Quote from: mgrim on December 30, 2013, 11:29:46 pm ---Could you please explain what the data in display memory actually is? I've always wondered why there are 1400 bytes while the display is only 700 points wide, but wasn't able to come up with any verifiable scheme. --- End quote --- It's easier to visualize if you think of display memory as 700 'columns' of amplitude - instead of points. The DSO does peak-to-peak decimation, so the minimum and maximum amplitudes in a sample period are stored as vector endpoints for each column. So, for example, if the DSO is decimating a 14k sample size, each column will contain the min. to max. amplitude found in each group of 20 samples. |
| marmad:
--- 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. |
| Hydrawerk:
Even my DSOX2000 has a small multifunction knob. I wish it was bigger. At Owon and Tektronix they have big multi knobs. :-+ Even two big multipurpose knobs! :-+ |
| marmad:
--- Quote from: Hydrawerk on December 31, 2013, 02:28:13 am ---Even my DSOX2000 has a small multifunction knob. I wish it was bigger. At Owon and Tektronix they have big multi knobs. --- End quote --- The knob size is fine - I wouldn't want to lose anything else to make room for a bigger one. |
| marmad:
Just a tiny video for fun - showing how fast and easy it is to use the multifunction knob when you use the right grip. This a totally unrehearsed, first-take video in which I type out "rigol ds2000 oscilloscope" on the software keyboard without selection errors in 50 seconds (although I could do it faster if I stopped laughing while shooting and actually gave some thought to each letter I needed next while selecting). I never attempted this before the video - and in fact, I've barely ever used the Rigol 'keyboard' (always using default names). Maybe this can be a challenge for who can get the fastest time (without errors)? ;) EDIT: Just managed 38 seconds when I put some thought and concentration into it - so an average of 1.52 seconds for each of the 25 selections. |
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