User Manual Dual C or Quad Ku Band TVRO Antenna (9497B-21)

9497B-21 C/Ku-Band TVRO Basic System Information3.3.1. Antenna ADE AssemblyThe Above Decks Equipment consists of an Antenna Pedestal inside a Radome assembly. The pedestalconsists of a satellite antenna dish & feed with a linear, or a circular Low Noise Block converter (LNB) withpolarization motor mounted on a stabilized antenna pedestal. The radome provides an environmentalenclosure for the antenna pedestal assemblyinside it. This keeps wind, watercondensation and salt-water spray off theantenna pedestal assembly. This preventsdamage and corrosion that would shortenthe expected life span of the equipment.The antenna control cable is connectedbetween the antenna radome assembly andthe antenna control panel. This cableprovides DC voltage to the antenna and allcontrol signals to and from the antenna.Six RG-6 (or better) coax cables areconnected from the antenna radomeassembly to the below decks equipment.One of these cables is the Antenna ControlCable, which has the DC operating voltagefor the antenna and the antenna controlcommunication between the AntennaControl Unit and the Pedestal Control Unit.Four cables carry the intermediate frequency(950-2050MHz) signals from the antennaassembly directly to the matrix switch andthe DC Voltage & Tone switching from theMatrix Switch to the a the LNB. All four areFigure 3-3 Series 97 TVRO Above Decks Equipmentprovided, even if you are only currentlyusing two for the LNB you presently have installed on your antenna. These cables ultimately provide theinput signal into the satellite receiver(s). And finally, one coax is installed as a spare.3.3.2. Antenna Control UnitThe Antenna Control Unit allows the operator to control and monitor the antenna pedestal with dedicatedfunction buttons, LED’s and a 2 line display. The ACU and its Terminal Mounting Strip are normally mountedin a standard 19” equipment rack. The ACU should be mounted in the front of the equipment rack where it iseasily accessible. The Terminal Mounting Strip is normally mounted on the rear of the equipment rack. It isrecommended that the antenna control unit be mounted near the Satellite modem location where you cansee the LED indicators while you are controlling the antenna.The Antenna Control Unit is connected to the antenna, ships Gyro Compass and Satellite modem.Figure 3-4 Antenna Control UnitThe Antenna Control Unit (ACU) communicates via an RS-422 full duplex data link with the Pedestal ControlUnit (PCU) located on the antenna. This control signal to/from the antenna is on the Coax cable along withthe 24VDC Pedestal power. The Pedestal Control Unit stabilizes the antenna against the ship's roll, pitch, andturning motions. The ACU is the operator interface to the PCU and provides the user with a choice ofpositioning commands to point the antenna, search commands to find the satellite signal and trackingfunctions to maintain optimum pointing angle. The operator may choose to work from either the frontpanel, using the M&C Port in conjunction with DacRemP remote diagnostic software, or the built in Ethernetport and a internal HTML page using a standard internet browser.3-5