> Front Panel Overview
> The Site Master menu-driven interface is easy to use and requires little training. The Site Master uses a touchscreen, keypad, arrow keys, and rotary knob for data input. The menu and submenu keys will vary depending upon the selected mode of operation.
> The numeric keypad keys are dual purpose, depending upon the current instrument state. The dual-purpose keys are labeled with a number on the key and the alternate function printed above. The numeric keys function when there is an active parameter entry dialog box open. The ESC key is used for aborting data entry and closing menus. The rotary knob, the four arrow keys, and the keypad can also be used to change the value of most active parameters.

> Note | The Site Master S331L is shipped with a Stylus Pen that can be used for touchscreen entry. The Site Master is also compatible with a standard corded USB mouse. Plugging the mouse into one of the USB ports on the Site Master will automatically display the mouse cursor arrow on the display. Mouse input can now be used in combination with touchscreen entry. If the mouse cursor is not displaying, confirm that the Cursor button under the Touch (2) menu is turned On.