i mean self-cal from dso menu. iirc i tried both in testmode on and in testmode off...
Yep. I tried all the options and always had an offset on channel 3.
Maybe we need to copy some ".cal" files from the 924 image to make it work, I don't know for sure. See my theory below...
At this point I don't really care. All I really wanted for my DHO804 was the extra memory and a decent bandwidth. I have both of those now and no useless on-screen junk from the 900-series LA.
The only missing thing is the extra 200uV/div range of the DHO900 but I can easily live without that.
Theory: The extra 200uV/div range
might be the reason the DHO800's cal files don't work with a DHO900's vendor.bin.