CHAPTER 1 - SYSTEM OPERATIONLSM 880 Left Tool Area and Hardware Control Tools ZEISS10/2014 V_01 000000-2071-464 1955.3.4.2 Correlation OptionsIn correlation you can assemble a model withpredefined terms.• Press the Correlation tab to activate theoptions for assembling a correlation model(Fig. 275). Press any other tab to leave thepanel.• Normally the last defined model will bedisplayed in the Equation Select window.Selected terms will be displayed in blue and theassembled equation will be displayed in theG(t)=1 display area. The name of the model willbe displayed in the Model display box.• You can load a pre-defined model from theModel drop down menu. Its name will than bedisplayed in the Model display box (Fig. 275).• You can alter the model or leave it unalteredand rename it by typing the new name into theModel display box.• You can save the model by pressing the Savebutton (floppy disc icon). If the name is pre-existing you will be prompted to confirmoverwriting the old method. Press Yes toacknowledge, No to keep the old method.• You can delete a method from the list byhighlighting the method and pressing theDelete button (dustbin icon).Fig. 275 Define Model panel – Correlation