Products > Test Equipment
SIGLENT SDS1102CML - First Impressions
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mcinku:

--- Quote from: tautech on April 06, 2014, 07:33:57 pm ---I would suggest you ZERO the trigger level and check other trigger settings. I can try myself if you have no luck.

--- End quote ---

Ok, I tried to zero out the trigger level and also set the trigger coupling to AC but the issue still remain.
I forgot to mention that my AC signal is riding on top of 300V DC signal. I'm guessing here but this DC component probably is the cause of this issue.
Any ideas?
tautech:
OK, 80V 1KHz AC on top of 300V DC, right?
Do any of the other math functions display correctly?
Have you tried triggering from Ch 1?

Check if you can get the results you want with the Probe cal signal, but the timing will be the same for both channels.
mcinku:

--- Quote from: tautech on April 06, 2014, 08:19:26 pm ---OK, 80V 1KHz AC on top of 300V DC, right?
Do any of the other math functions display correctly?
Have you tried triggering from Ch 1?

Check if you can get the results you want with the Probe cal signal, but the timing will be the same for both channels.

--- End quote ---

Yes correct that is my signal.
I think other math functions are fine.
I did try triggering from CH1, nothing happened.

Interesting, when I try to use only my sig generator and running same signal on both channels, obviously I have to deduct the signal and same thing happens. If I invert one channel and use sum.... Same thing happens.

I'm starting to think something is wrong with my scope.
tautech:
Confirm you Firmware version is the latest. If you scope is doing everything else correctly, it might be a firmware bug.
Deckert:

--- Quote from: mcinku on April 06, 2014, 05:37:58 pm ---I'm feeding 1k sine wave inverted signals on both channels. When I'm trying to use sum function, I'm expecting to get a flat line but what I get is...  :wtf:

--- End quote ---

I suspect your math voltage scale is not set to the same scale as the other two channels. Select the math channel and go to page two of the setup. There are two options: one for setting the vertical position and the second to set the vertical resolution. Make sure it is not set to nV :)



--deckert
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