User Manual

Base Station User Guide 19
Upconverter
The digital QAM Upconverter includes four independent single IF upconverter modules.
Three of the upconverter modules are used, each for a sector. The fourth upconverter
serves as a spare. The unit uses a common power supply and control module to
manage all the upconverters. An easy to read back-lit LCD is used to display all the
module information. The unit features an advanced menu system, which provides for
easy programming using the push-button navigation switches on the unit’s front panel.
The Upconverter uses a fix input frequency of 44 MHz, and a fix input level (from the
WMTS). The Upconverter output frequency and output level are controlled by the front
panel push-button switch. The Upconverter output level is set through the Tune
Procedure to limit the BSR output level below the maximum aloud level.
Power Amplifier
The Power amplifier model TAUD-40 supplies up to 20 watts of 64QAM digitally
modulated signal. The amplifier includes an extensive built-in remote control and
monitoring systems. The front panel LCD enables monitoring the forward and reflected
RF power, and DC voltage.
The back panel AC Circuit breaker eliminates replacement of fuses.