EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: EEBlackSheep on January 21, 2019, 05:00:54 am
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I have a Siglent SDS2000X and have a couple of questions that I cannot get an answer from the manual. Currently I am using it for ignition analysis so the timebase is quite slow (100us)
(1) I am using the history button to view previous triggered captures. Sometimes it capture up to 100+ frames, sometimes just 30 frames., Sometimes just on frame - no longer how long I lave it running. How do I set the memory depth of the frames?
(2) I need to capture a very long waveform (about 1 minutes worth) at a time resolution of 100us. Similar to a data logger. Can the SDS 2000X do this - how do I "scroll" back through the data?
thanks!
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Sequence mode would get you close. If you know what your triggering on and only need short. You can get a lot of stuff at a small timebase. For any point across 1 minute will require juggling time resolution vs memory depth. At max memory depth and on a timebase of 5s/div you would capture more than a minute of data. But i dont think you would have many points left at 100us
Incase you dont know there is a timebase zoom. Press the timebase encoder and it will show a zoom window on screen
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I have a Siglent SDS2000X and have a couple of questions that I cannot get an answer from the manual. Currently I am using it for ignition analysis so the timebase is quite slow (100us)
(1) I am using the history button to view previous triggered captures. Sometimes it capture up to 100+ frames, sometimes just 30 frames., Sometimes just on frame - no longer how long I lave it running. How do I set the memory depth of the frames?
(2) I need to capture a very long waveform (about 1 minutes worth) at a time resolution of 100us. Similar to a data logger. Can the SDS 2000X do this - how do I "scroll" back through the data?
thanks!
Captured memory WRT the total memory available is a function of sampling rate, timebase setting and memory depth setting. You can set the memory depth in the Acquire menu.
For the SDS2kX you have 140 M of memory and I think some further buffer. (rf-loop will correct me on this)
Have a look at the settings used in this example using Sequence mode in the 14 M memory SDS1104X-E:
https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg2096347/#msg2096347 (https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg2096347/#msg2096347)
You also have Sequence mode so have a look at image 4 in the above link to see the process used to examine each saved segment.
I might also ask, why such a long record needed ?
Could you set a specific trigger setting to find what you are looking for ?
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Great info thanks guys.
The reason for a long record is really I am using it as a data logger for automotive ignition systems. Searching for patterns of which I do not yet know the characteristics.