| Products > Test Equipment |
| REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol |
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| 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? |
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