Products > Test Equipment
Using (and living with) Siglent SDS1000X-E Series Oscilloscopes
Orion33:
How to save the calibration results to a file so that I can apply them later?
rf-loop:
--- Quote from: Orion33 on October 03, 2022, 09:18:49 am ---
--- Quote from: tautech on October 02, 2022, 09:01:17 pm ---Please install V6.1.37R9
https://int.siglent.com/download/firmwares/?ProId=12
--- End quote ---
I asked the distributor if this would void the warranty.
--- Quote from: bdunham7 on October 02, 2022, 09:55:51 pm ---That doesn't look broken or unsatisfactory to me.
--- End quote ---
≤±4.0%: ≤2 mV/div
For 500uV/div 4% is 500*0.04 = 20uV.
--- End quote ---
It is DCGain accuracy! Where you have measured or even looked from screen DC Gain using any acceptable method?
DC Offset accuracy is totally different thing. Note there is in data sheet formula also this ".....+500µV"
And if you can not even format USB stick to native FAT32 format please do not even try FW update.
bdunham7:
--- Quote from: Orion33 on October 03, 2022, 09:18:49 am ---≤±4.0%: ≤2 mV/div
For 500uV/div 4% is 500*0.04 = 20uV.
--- End quote ---
That's doubly incorrect. The DC Gain spec you've quoted would mean relative to the input. If you have 0V input, the stated tolerance for DC Gain error would be 0V * 4%, which is of course zero.
What you are seeing is not a DC Gain error, it is offset. The offset spec for zero offset and zero input boils down to 1.5% of 8 divisions (not 1) + 500uV, which is 1.5% of 4mV + 500uV or ~560uV. Your errors are all less than 500uV, so I'd say it is considered acceptable by the specifications. Also, your traces look very quiet--was this done with all open BNC connectors? The calibration procedure should be done with nothing connected, although in practice I'm not sure how much difference this makes.
Here is a screenshot of my scope after running self-cal after 30 minutes of warmup. It seems better than yours, perhaps, but still with ~100uV offsets.
Orion33:
--- Quote from: bdunham7 on October 03, 2022, 12:32:55 pm ---Also, your traces look very quiet--was this done with all open BNC connectors?
--- End quote ---
Yes, with open but with averaging by 1024 to good see DC offset.
--- Quote from: bdunham7 on October 03, 2022, 12:32:55 pm ---Here is a screenshot of my scope after running self-cal after 30 minutes of warmup. It seems better than yours, perhaps, but still with ~100uV offsets.
--- End quote ---
Yesterday I also achieved 160uV deflection. I asked how I can save this calibration to a file and apply it on subsequent failures, but so far no one has answered.
Yes, the distributor said that I can install the latest firmware myself. I'm going to do it now.
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