Functions6.14 [2.20] Settings > ServiceOperating with the Local User Interface192 Operating Manual, 06/2017, A5E31930478-05NoteCombined operation with ULTRAMAT 7: Signal frequency of the OXYMAT 7If you use an OXYMAT 7 and an ULTRAMAT 7 analyzer module in combined operation, thedefault OXYMAT 7 signal frequency can have a negative influence on the ULTRAMAT 7analyzer module.• Check the set frequency of the OXYMAT 7 analyzer module.• If the nominal frequency 8.33 Hz is still set, change the signal frequency to 10 Hz.NoteChanging the nominal frequencyWhen you change the signal frequency, you are prompted to run a normalization calibration.1. Main menu > "2. Settings" > "20. Service > "03. Factory calibrations" > "01. Signalfrequency".The factory default signal frequency (nominal frequency) is 8.33 Hz and 10.00 Hzrespectively (OXYMAT 7). You can specify an alternative signal frequency. Thefrequency range is from 6.94 Hz to 11.11 Hz.2. Entering alternative signal frequency: "Signal frequency" parameter field.– Authorize access with Expert PIN, if necessary.– Change default value.3. Carry out a normalization.Executing phase calibration1. Main menu > "2. Settings" > "20. Service > "03. Factory calibrations" > "02. Phasecalibration".This function serves for test purposes. The phase is automatically set duringnormalization.The current phase is displayed: "Phase" display field.2. Start phase calibration wizard:– Authorize access with Expert PIN, if necessary.– Follow the instructions of the wizard.The newly determined phase value is displayed at the end of the wizard process.