I have modified the vi to cope with channel switching.... however there still seems to be a problem when switching the data from channel A to B. 0.8v wired to channel B If i directly wire the Channel B data to the while loop i get data as seen in picture "channel b directly wired.png" If i use a sel...

Do you have an example of using both channels to read from. you have PicoScope2000aExampleStreaming.vi but that is only channel A... do you have an example of switching between channel A and B using a button??.

Thanks

Mark