KNS Ku-BAND RX, Installation And Operation Manual

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Figure 7-34 Configuration of Tilt Offset
7.2.10 TX DC 48V Power ON/OFF
The ACU has a built-in 48V DC power supply, (150W). Most L-band modems can
supply 24V DC power and support BUCs up to 4~6 Watts. When a customer requires an
8W BUC, such modems cannot supply enough power, so an external DC power supply is
commonly used. With a built-in 150W DC power supply dedicated to a TX BUC, the ACU
can provide enough power to the BUC. For applications using less than 6W BUC, most
standard L-band modems can provide DC power internally (24V DC).
The operator can control the TX DC voltage using the ‘TX POWER MUTE’ function. If
you select ‘ENABLE’, the antenna shuts off the TX DC voltage when the antenna is in
blockage or when the antenna is not tracking the satellite. But we do not recommend that
you shut off the TX DC power, because the BUC can cause electrical damage.
NOTE : The default TX DC power voltage is 48V. We can install the 24V TX power
supply (optional), if the dealer requests it.
NOTE: If the BUC is installed by the operator (not by SAMYUNG ENC), then please be