Hi,
I have problems with my DS1104B scope.
Channel 1 doesn't trigger anymore. Channel 4 has a supperposition sqaure wave. When i change the V/div from channel 4 the frequentie of the square wave changes also.
I connected on channel 3 and 4 the same sinus signal and used the math function CH3-Ch4. It shows the following picture.
-Does someone have the schematics of the DS1104B?
-New firmware? where can i download. I have searched on rigols site but didn't find
thnx for now
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