25
isolated from any other groundings due to the sensitivity of the CMOS components of the
PCU.
A good rule of thumb is that the receive (RX) L-band cable be directly connected to the
antenna control unit. This is because the receive (RX) L-band cable provides the DC
power to the PCU to operate that antenna. Technically speaking, the grounds from the
TX and RX IFL runs can be different, but a single piece of cable running from the ACU to
the antenna will ensure that the antenna operates properly and protect it from a possible
48 VDC, which supports the optional BUC installation.
Refer to Figures 3-23 and 3-24 below for a simplified block diagram of the different sizes
of BUC installations.
Figure 3-23 ACU Cable Connection (BUC Capacity: Modem supplies the BUC Power)
Summary of Contents for Ku-BAND RX
Page 1: ...INSTALLATION AND OPERATION MANUAL FOR VSAT VS61 Ku BAND TX RX ANTENNAS...
Page 15: ...7 Figure 3 1 Best Location Figure 3 2 Antenna Blockages...
Page 46: ...38 Figure 4 1 Step 1 of Reference Searching Definition...
Page 65: ...57 Figure 6 3 Co pol Kits Optional...
Page 120: ...d Appendix C Layout of Radome and Antenna Mounting Holes Figure C 1 Plastic Radome...
Page 121: ...e Figure C 2 FRP Radome Option...
Page 122: ...f...
Page 123: ...g Maritime Satellite Antenna...