Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
<< < (354/566) > >>
marmad:
Following up on some info discovered about the DS2000 in another thread, I thought I'd post the info here in an effort to inform owners who hadn't seen it there.

The DS2000 series appears to have trigger jitter/offset in the Zoomed trace while at lower sample rates (in Delayed Sweep mode). It appears to follow this pattern:

When in Delayed Sweep mode:

Sample rate >= 1GSa/s: no conspicuous jitter or offset
Sample rate <= 500Ms/s: jitter and/or offset equal to a maximum of plus or minus one sample period

So for example, @ 200MSa/s it's equal to ±5n, while @ 10MSa/s it's equal to ±100ns.

I'm not sure yet if this is a firmware issue or not (these tests are from the latest FW version). If someone has a chance to test a lower FW version, please post the results here.


Here is an example of jitter @ 100MSa/s  (i.e. ±10ns) in Delayed Sweep:




Rigol's response to this 'issue' is here.
sync:
FYI the DS1000Z has that jitter too.
Wim13:

Has all to do with phase differences..

If you synchro the clock rate off the DSO with signal generator it stands still.

Carrington:
LOL... The DS2000 and the average of everything that shakes.

Normal:


Average:


This also has to do with phase, in this case phase trigger/signal. Playing with holdoff, can be corrected.
I think that David L. Jones has a video about something similar.
marmad:

--- Quote from: sync on November 29, 2013, 02:54:52 pm ---FYI the DS1000Z has that jitter too.

--- End quote ---

Thanks for the info, sync.


--- Quote from: Wim13 on November 29, 2013, 03:03:25 pm ---
Has all to do with phase differences..

If you synchro the clock rate off the DSO with signal generator it stands still.

--- End quote ---

Hey Wim - good to see a post from you  :)

Phase difference between what, exactly? Between the sample rate and the delayed sweep rate?
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod