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Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests

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tautech:
3.141529
Is Ch2 the Clock ?

We see both your screenshots captured with a Stop, is that because the waveform is not stable ?

Performa01:

--- Quote from: 3.141529 on January 05, 2023, 11:10:41 pm ---I upgraded to 1.5.2R2, and I don't see that behaviour anymore.  But I do think I see another difference: auto gating of measurements when in zoom mode.  I have a measurement setup on channel 3 to count the number of pulses.  I don't have gating turned on, but when I zoomed in on the old firmware, the count only included the pulses in the zoomed view.  If I zoomed out the pulse count would change to reflect the timespan of the zoomed view.  On the current firmware, it now appears to calculate based on the entire capture regardless of the zoom view, and I have to go in and manually set the gate ranges and update it each time I zoom into a different section of the capture. 

--- End quote ---
There is no such thing as auto gating and never has been.
You measure (count) the pulses in channel C2, the result does not change when you use the zoom indeed - and this is correct behavior.
If you want to count the pulses in the zoom window, then you have to specify the zoom trace Z2 as your measurement source.



--- Quote from: 3.141529 on January 05, 2023, 11:10:41 pm ---In addition, I'm not sure where it's getting 2Hz from on the frequency display for f(C2) just below the "Siglent|Stop" status on the top bar.  See attachement 1-5-2R2-pulse-measurement.jpg.

--- End quote ---
You're referring to the trigger frequency counter. At the time of the screenshot the scope received less than two trigger events per second and looking at your waveform, this seems plausible.

3.141529:

--- Quote ---3.141529
Is Ch2 the Clock ?

We see both your screenshots captured with a Stop, is that because the waveform is not stable ?
--- End quote ---

I'm capturing debug signals from a USB/JTAG device I'm working on.  I'm trying to improve the throughput of the JTAG device when uploading firmware to an ARM device I'm playing with.  So no, the waveform isn't stable, it goes away when the firmware transfer finishes.  I'm measuring when JTAG shift in/out is occurring (CH2) along with reading from/writing to the USB bulk endpoints (CH3,4).  CH1 shows when a USB control message is processed.

tautech:

--- Quote from: 3.141529 on January 05, 2023, 11:48:54 pm ---
--- Quote ---3.141529
Is Ch2 the Clock ?

We see both your screenshots captured with a Stop, is that because the waveform is not stable ?
--- End quote ---

I'm capturing debug signals from a USB/JTAG device I'm working on.  I'm trying to improve the throughput of the JTAG device when uploading firmware to an ARM device I'm playing with.  So no, the waveform isn't stable, it goes away when the firmware transfer finishes.  I'm measuring when JTAG shift in/out is occurring (CH2) along with reading from/writing to the USB bulk endpoints (CH3,4).  CH1 shows when a USB control message is processed.

--- End quote ---
Have you tried adding some Holdoff to the trigger setting so to not have it rearm in the middle of a packet ?

3.141529:

--- Quote ---There is no such thing as auto gating and never has been.
You measure (count) the pulses in channel C2, the result does not change when you use the zoom indeed - and this is correct behavior.
If you want to count the pulses in the zoom window, then you have to specify the zoom trace Z2 as your measurement source.
--- End quote ---

Thanks! I guess I had set that when I originally setup the scope a couple weeks ago, but I didn't remember I had done that.  After the upgrade I had to clear all my settings, re-setup the measurements, and didn't set the measurement from the zoom trace.  The newer UI now shows signal source as (C2/Z2), where the older UI didn't.

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