Tait TB9400 Installation And Operation Manual

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Tait TB9400 Installation And Operation Manual Manual pdf 89 page image

DRAFT 4TB9400 Installation and Operation Manual Maintenance 89© Tait Electronics Limited September 20116 MaintenanceThe base station is designed to be very reliable and should require littlemaintenance. However, performing regular checks will prolong the life ofthe equipment and prevent problems from happening.It is beyond the scope of this manual to list every check that you shouldperform on your base station. The type and frequency of maintenancechecks will depend on the location and type of your system. The checks andprocedures listed below can be used as a starting point for your maintenanceschedule.Performance Checks We suggest you monitor the following operational parameters using the webinterface:■ VSWR■ DC input voltage, especially on transmit■ receiver sensitivity■ any temperature alarms.These basic checks will provide an overview of how well your base stationis operating.Reciter If an external frequency reference is not used, check UHF reciters forfrequency drift after 3 months’ service and annually thereafter. If the drift is> 0.5 ppm, adjust the carrier frequency offset. For details, see the Help.PA There are no special maintenance requirements for the PA.PMU There are no special maintenance requirements for the PMU. However, wesuggest that you periodically check that the screws on the DC inputterminals are tight. They may work loose with thermal cycling. Also, if youare using battery back-up, you should check the batteries regularly inaccordance with the manufacturer’s recommendations.Ventilation The base station has been designed to have a front-to-back cooling airflow.We strongly recommend that you periodically check and maintain theventilation requirements described in “Equipment Ventilation” on page 64to ensure a long life and trouble-free operation for your base station.Cooling Fans The cooling fans have a long service life and have no special maintenancerequirements. You can use the web interface to configure the base station togenerate an alarm if any of the front panel cooling fans fails. Refer to theHelp for more details.