User Manual DDS200 Digital Demodulation System 070-9952-00

Maintenance and TroubleshootingThis section discusses the maintenance and troubleshooting that an operator canperform on the DDS200 Digital Demodulation System. For a more thoroughdiscussion of maintenance and troubleshooting, refer to the service manualMaintenanceThe unit does not require regular maintenance. Cleaning is basically all themaintenance the unit requires. In particular, care should be taken that the inletand outlet vents are kept clean. Check the nominal data from time to time. Referto the data sheet for data and tolerances as well as information on appropriatecalibration intervals.Cleaning the OutsideUse a soft, lint-free duster or brush for cleaning the unit on the outside. If theunit is soiled, meths or mild detergents may be used. Do not use any nitrothinners, acetone, etc. since these solvents may damage the front-panel labellingor plastic parts. Clean and check above all the inlet and outlet vents.WARNING. Disconnect the power cord from the rear-panel of the DDS200 beforeopening the instrument. Failure to do so could expose you to risk of injury oreven death.Cleaning the InsideFor cleaning the interior, remove the covers. Remove dust by means of a brushor grease-free compressed air. Do not open the internal shield covers since therisk of breaking a component during cleaning is high and an enclosed assemblywill not be soiled that much. The inlet and outlet vents are the most affected bydirt.StorageThe unit can be stored at temperatures between –40 and +70 °C. If stored for alonger period, the unit should be protected against dust.DDS200 Digital Demodulation System User Manual 4–1