1 Getting Started12 Keysight N1911A and N1912A Installation GuideFront Panel Keys and ConnectionsThis section briefly describes the functions of the front panel keys and connectors.The user’s guide shows you how to use them in more detail.These keys are located to the left of the display.Key FunctionPress this key to preset the power-meter. An option list of pre-installedmeasurement configurations is presented. Select an option and press the confirmkey.Press this key to control the power meter from the front panel when it is operatingvia the remote interfaces (when Local Lock Out is not enabled).Press this key to select the upper or lower measurement window. The selectedwindow is highlighted by a blue line on the right side of the window. Anymeasurement setup you create is performed in the selected window.Press this key to choose windowed, expanded, or full-screen display of a numericmeasurement. It also provides quick access to the Gate Control screen and menuwhen a trace window is selected.Press this key to switch the meter between on and standby. When power issupplied, the background LED is red. Pressing the key, switches the power meter onand the background LED is green.