Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
ted572:
Install - Uninstall Rigol's Options using UltraSigma
darrylp:
--- Quote from: Orange on July 10, 2014, 03:37:18 pm ---If you install the 300MHz option on a DS2000, your scope's rise-time is indeed lowered, however you also gain a fair amount of overshoot on pulses. The overshoot measured with a TEK 284 (70 pico sec. step) was in the order of 15%. So I decided that this is not acceptable for me, and turned it off.
--- End quote ---
this 15% more overshoot is from the 200MHz set DS2000, but until you know what the rise signal should look like ( measured on a much higher bandwidth scope ) then maybe seeing an overshoot increase is actually right ? the lower bandwidth just wouldn't have the ability to capture it ?
ted572:
--- Quote from: marmad on July 10, 2014, 02:20:05 pm ---
--- Quote from: ted572 on July 09, 2014, 06:13:17 pm --- marmad:
I would appreciate hearing more from you on the issues you had. Have you learned anything else since your experiences with the DS2000, FR v.3, and the 300MHz BW Option?
Thank you for any information you can add since your post in Reply 2524, Ted552
--- End quote ---
[Additional]:
Now, in terms of the continual hanging problem - I haven't seen it happen again since I removed the 300MHz option and downgraded to v.2 - then upgraded back to v.3 later after my work was done. But I was working with Roll mode and some rather atypical settings - so it's possible that the same settings with v.3 but without 300MHz would also cause the hanging - I just haven't been able to reproduce it since. So at this point, it's unknown if it's just a bug that exists in v.3 with certain settings - or is linked to 300MHz option being installed. But I have to say, before I ever began using the 300MHz option, the DS2000 crashed or hung fairly infrequently - but it's happened many more times with it installed. But more info is definitely needed to pinpoint the source of this problem.
--- End quote ---
Thank you very much 'marmad' for the detailed information you provided. I'm very grateful for all the work you have done with the DS2000, etc. and so generously shared with us.
Thanks again, Ted572
Orange:
--- Quote from: darrylp on July 11, 2014, 11:51:34 am ---
--- Quote from: Orange on July 10, 2014, 03:37:18 pm ---If you install the 300MHz option on a DS2000, your scope's rise-time is indeed lowered, however you also gain a fair amount of overshoot on pulses. The overshoot measured with a TEK 284 (70 pico sec. step) was in the order of 15%. So I decided that this is not acceptable for me, and turned it off.
--- End quote ---
this 15% more overshoot is from the 200MHz set DS2000, but until you know what the rise signal should look like ( measured on a much higher bandwidth scope ) then maybe seeing an overshoot increase is actually right ? the lower bandwidth just wouldn't have the ability to capture it ?
--- End quote ---
Not in this case; the Tek 284 has no overshoot and a rise time of 70 ps.
Teneyes:
--- Quote from: Orange on July 11, 2014, 08:22:25 pm ---
--- Quote from: darrylp on July 11, 2014, 11:51:34 am ---this 15% more overshoot is from the 200MHz set DS2000, but until you know what the rise signal should look like ( measured on a much higher bandwidth scope ) then maybe seeing an overshoot increase is actually right ? the lower bandwidth just wouldn't have the ability to capture it ?
--- End quote ---
Not in this case; the Tek 284 has no overshoot and a rise time of 70 ps.
--- End quote ---
I wish to point out something that is important to this discussion.
A Rigol DSO user must be aware of the SInx/x interpolation
Below I show you 2 displays, and ask "Which is Better??? ":-//
Check out:
http://en.wikipedia.org/wiki/Gibbs_phenomenon
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