The graph on the front panel can be configured to have multiple amplitude scales, but I cant figure out how the multiple data sets need to be packaged for the intensity graph to accept them.
The above answer is correct. Although you can input multiple arrays into a regular graph indicator, the intensity graph is already a 2 dimensional graph and so multiple graphs can not be shown on a single indicator. Not to mention what was described above in that you wouldn't be able to see each of the intensities seperately. Hope this helps.
Adam Brehm Applications Engineer National Instruments