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TB9400 Installation and Operation Manual

© Tait Limited March 2015

The base station is designed to be very reliable and should require little 
maintenance. However, performing regular checks will prolong the life of 
the equipment and prevent problems from happening.

It is beyond the scope of this manual to list every check that you should 
perform on your base station. The type and frequency of maintenance 
checks will depend on the location and type of your system. The checks and 
procedures listed below can be used as a starting point for your 
maintenance schedule.

We suggest you monitor the following operational parameters using the 
web interface:

■

VSWR

■

DC input voltage, especially on transmit

■

any temperature alarms.

These basic checks will provide an overview of how well your base station 
is operating.

We recommend that you calibrate the reciter after three months of 
operation, and then annually for H-band reciters, or every three years for 
B-band reciters. The calibration procedure is described in the Help 
(Calibrate > Reciter > Internal reference), and requires a calibrated 
frequency generator.

There are no special maintenance requirements for the PA.

There are no special maintenance requirements for the PMU. However, we 
suggest that you periodically check that the screws on the DC input 
terminals are tightened to the recommended torque of 18–20lbf·in 
(2–2.25N·m). They may work loose with thermal cycling. Also, if you are 
using battery back-up, you should check the batteries regularly in 
accordance with the manufacturer’s recommendations.

The base station has been designed to have a front-to-back cooling airflow. 
We strongly recommend that you periodically check and maintain the 
ventilation requirements described in 

to ensure a long life and trouble-free operation for your base station. Also 
check for a build-up of dust in and around the module heatsink fins, front 
panel air intakes, and fan ducts.