Octave Analysis - True Octave - Invalid Input

I am trying to run a True Octave analysis, and every data stream or processed data stream that I can think to add as the analysis channel results in, "Error: Invalid input channel:"

Which type of data do I need to enter in here?

I can do the Synthesized Octave analysis, just not the True Octave analysis.

Any help would be appreciated.

Thanks,

Dear Joe,

True octave uses filters sets as in octave analyzers. True octave filters exactly represents the filter sets defined by the IEC 61260 standards and give the user real-time response for vivid live visualization of data.

To perform the True Octave analysis you have to use synchronous channels.

Additional information can be found in the F1 help.

Best regards.

Rok