Section 3Operating the SystemOperating the System 113.1 THE TOUCH SCREEN AND FOOTSWITCHThis section describes the touch screen and footswitch used to control theGreenLight HPS™ laser system, and provides step-by-step instructions onhow to operate the system.Laser parameters are selected and the system status is changed by using atouch screen. You may also use the button on top of the footswitch to gofrom READY to STANDBY laser status. The aiming beam is activated whenthe system is changed from STANDBY to READY and the surgical beam isactivated by pressing the foot pedal. Press the yellow pedal for VAPOR andthe blue pedal for COAG.Power is set by touching the – or + buttons on the display screen. Anaudible tone will be heard when maximum or minimum levels are reached. Ifat any time the laser is unable to deliver the requested power, an alert toneis sounded and the actual power being delivered is displayed.THE TOUCH SCREENPower AdjustButtonsResets Energy andLasing TimePower AdjustButtonsReady/StandbyControl andIndicatorsChanges theSet-Up ScreenLasing Time IndicatorEnergy IndicatorVaporizationPowerCoagulationPower Indicator