First of all, use SpiceTools or BemaniTools configuration tools to configure this pad, yes, you can use a dancepad like this, i tested with mine, set event mode on, configure in slot 1 or 2 on your configuration tolls these arrows to respectives arrows in keyboard, but the MENU ARROWS: move left - X move right - O, tringle or square for - menu up or down and the start button for start, this is my configuration.
but if do you prefer using the emulated E-amausemet card i recommend to use a separate USB keyboard that have only numbers and enter.