3Fig. 2.1 Location of Controls and DisplaysFig. 2.2 Membrane Key Functions2.1 Powering Up the AnalyzerWarning. Ensure all connections are madecorrectly, especially to the earth stud – see Section 6.3.1) Ensure the input sensor(s) is/are connected correctly.2) Switch on the power supply to the analyzer. A start-upscreen is displayed while internal checks are performed,then the Operating Page (Section 2.3) is displayed as the pHor Redox (ORP) monitoring operation starts.2.2 Displays and Controls – Fig. 2.1The display comprises two rows of 4 1 /2 digit, 7-segment digitaldisplays, that show the actual values of the measuredparameters and alarm set points, and a 6-character dot matrixdisplay showing the associated units. The lower display line is a16-character dot matrix display showing operating andprogramming information.2.2.1 Key Functions2 OPERATION0.00Monitoring pH0.00AlarmLEDsDisplayLinesLowerDisplay LineMembrane KeyspH UnitsMenu KeySidescroll KeyDownscroll KeyUp KeyDown KeypHB – Advancing to Next PageC – Moving Between FramesD – Adjusting and Storing a Parameter ValueE – Selecting and Storing a Parameter ChoiceA – Moving Between MenusFor majorityof framesFrame 1Frame 2Frame 3Frame 4Page 1Frame 1Frame 2Frame 3Page 2Advance tonext pageorFrame 1Frame 2Frame 3Page XFrame 4Advance tonext frameNew value is storedautomaticallyParameter Value AdjustParameter XYZSelectNew value is storedautomaticallyMenu 1Menu 2Advance tonext menu