Before using one of the Transform | MIMO commands, each measurement function to be used in the MIMO calculations must be designated as either an Input, an Output, or Both an Input & Output. All Transfer Functions must be designated as a Cross measurement.
All Input measurements must be designated as Input or Both in the Input Output column of the M#s spreadsheet.
All Output measurements must be designated as Output or Both in the Input Output column of the M#s spreadsheet.
All Transfer Function measurements must be designated as Cross in the Input Output column of the M#s spreadsheet.