Front Panel Interface31PLM Series Operation Manual rev 1.1.97. Front Panel InterfaceAn overview of the front panel interface is provided in section 4.1. This chapter describes each cluster ofcontrols as shown in Figure 7-1.Figure 7-1: Front Panel Interface7.1 OverviewThe majority of PLM functions can be controlled and/or monitored via the front-panel LCD display screen ,function buttons and rotary encoder .7.1.1 Operating ModesThe front panel has two basic modes: Meter Mode and Menu Mode.▸ Meter Mode provides four views: Home View (default), Module View, Temperature View and InputView. To scroll through these views, press the METER button. Please refer to section 7.10 for furtherinformation on Meter Mode.▸ Menu Mode provides various menus for viewing and editing parameters and is selected by pressing theMENU button. Select the required submenu by pressing the associated button. Please refer to section7.11 for further information on Menu Mode.7.1.2 Warning, Fault and Mute IndicationsFault or warning conditions are indicated via the tricolor LEDs embedded in the dynamic function buttons;a simultaneous description is shown adjacent to the button, on the LCD. The LEDs to the left of the LCDindicate problems with the PLM or its inputs, while those to the right indicate problems with the poweroutput channels.Please note that the same LEDs also indicate the mute status of inputs (left) and outputs (right). A full list,description and priority of the fault and warning indications is provided in section 7.8.5.2.