==Getting Started==
Open the EM.Cube application. Click <b>Start</b>, select <b>All Programs</b>, and then the <b>EMAG</b> program group. Select<b>EM.CUBE</b> to start the program. By default, EM.Cube opens up a blank project with the name âUntitledProj1â inits [[CubeCAD]] Module.
[[Image:fdtd_lec1_1_module.png|600px|right]] You can start drawing objects and build up your physical structure right away. Or you can initiate a new project by selecting the <b>New</b> [[Image:fdtd_newb.png]] button of the System Toolbar (or using the keyboard shortcut <b>Ctrl+N</b>, or via the menu <b>File → New Projectâ¦</b>). This opens up the New Project Dialog, where you can enter a title for your new project and set its path. You can use the Windows Explorer to go to the desired folder where you want to
place your new project folder. For this project, use the title âFDTDLesson1â. From the same dialog, you can
also set the projectâs Length Units, Frequency Units, Center Frequency and Bandwidth. For this tutorial lesson,set the length and frequency units of the project to <b>Millimeters</b> and <b>Gigahertz</b>, respectively, and set both thecenter frequency and bandwidth to 1GHz. Then, click the <b>Create</b> button of the dialog to accept the settings. Anew project folder with your given name is immediately created at your specified path.Â
EM.Cubeâs [[CubeCAD]] Module lets you construct 3D geometries, or import them via external model files
[[Image:fdtd_lec1_3_newproject.png|500px|centerleft]] Before you begin to set up the geometry of your project, letâs quickly ensure that the project units are set up correctly. First, open up the Units Dialog box by selecting the <b>Units</b> button of the Simulate Toolbar (or using the keyboard shortcut <b>Ctrl+U</b>). Make sure the length units are Millimeters, and select <b>OK</b> to continue. Similarly, for frequency and bandwidth, select the <b>Frequency</b> [[Image:fdtd_frequencyb2.png]] button of the Simulate Toolbar (or use the keyboard shortcut <b>Ctrl+F</b>) to open the Frequency Dialog box. Make sure both the frequency and bandwidth are 1GHz, and select OK to continue.