The analysis of Band to Band Power used to analyze power spectrum ratio of the optional two frequency band. Before performing this analysis, in order to obtain the band to band power it is necessary to use a moving window together. The moving window analysis is explained in the Method of Analysis of this chapter in detail. Please refer to it!. The user should select Moving Window in the analysis tool bar at first, configure the window size and the overlap ratio, and then click this analysis method. And the frequency setting dialog box will pop up. When the specific bandwidth for analysis is configured into this frequency setting dialog box, it is possible to analyze the power value ratio of that bandwidth. The result is shown on the display window for each channel as below. The resulting graph that appears on this single screen is band to band power. If you wish to check out the result of another graph, it is necessary to use the dynamic function on the bottom of the display window. Besides, if you would like to check out all the band to band power values of the windows on a single screen, select History Mode from the pop-up menu that appears by clicking the right button of the mouse.