The graphical measurement menu Multitone shows the results of the multitone audio measurement.
To perform an Multitone measurement, the CMU generates a composite audio signal that represents the superposition of up to 20 individual fixed-frequency tones with configurable frequency and level. An audio signal containing the same tones can be analyzed in a single measurement and displayed in a bar chart.
The Multitone measurement is thus a fast method to determine the level of up to 20 different tones at known frequencies and to perform a limit check for all results. Possible applications are also frequency response and intermodulation measurements.
The measurement menu Multitone is opened via the main menu Menu Select (with the associated key at the front of the instrument) or from the Analyzer/Generator menu using the Multitone hotkey.