Table 4 Information iconsIcon DescriptionA printer is connected to the instrumentA USB key is connected to the instrumentA sensor is connected to sensor port 1A sensor is connected to sensor port 2The data log file is full. Refer to Manage the data log on page 39 for the options available to manage the data log file.A measurement is in operation using the PC software. The keyboard is locked.5.3 Menu structureThe three primary menus are shown in Table 5, Table 6 and Table 7.Table 5 Home menuOption DescriptionData logManage the data log fileCalibrationElectrode and titrant calibration proceduresSettingsSee the table entry belowMaintenanceSee the table entry belowPurgeRemove air from the syringe, and from the syringe and pump tubesTable 6 Settings menuOption DescriptionApplicationsManage the installed applicationsOperatorsSet up and manage the instrument operatorsDate & TimeSet the date and timeUser interface and navigation26