KNS Ku-BAND RX, Installation And Operation Manual

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4.6 BUC Compatibility
The block up-converter (BUC) is a device comprising an up-converter and power
amplifier in a single package. It has an operating frequency range which supports
standard Ku-band frequencies from 14 ~ 14.5 GHz, while the extended Ku-band operates
in the frequency range of 13.75GHz ~ 14.5GHz.
It is important to make sure that the desired carrier frequency is within the operating
range of the BUC. Most BUCs require a 10 MHz external reference and a DC voltage
from the modem or the ACU. However, if a BUC is activated with an internal 10 MHz
reference, there is no need to provide 10 MHz reference from the modem.
Make sure that the proper DC voltages are provided to the BUC. The equipment will
be damaged if a 24 VDC BUC is provided with voltage of 48 VDC, which is generally used
in larger BUCs. Note that, currently, the ACU only provides 48 VDC down the TX IFL
cable.