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8.1.5 - Tuner
The antenna ODU has an onboard DVB receiver to lock onto a satellite but the preferred
method for lock, identification and fine tuning under normal operation is to use
information queried and returned from the modem itself.
If the system is set to generic mode, the antenna’s lock and fine tuning is completed
using the onboard DVB receiver. This second method requires no modem
communication to the controller but it still requires a modem to be present in order to
power the LNB. Winegard technical support will in times use this mode to troubleshoot
issues, but it is not recommended for normal operation.
8.1.6 - Software
There are several safety features built into the antenna system. These features
automatically stow the antenna if certain criteria are met. These include loss of receive
signal lock, detected motion (pitch, roll, velocity) as well as turning the power off to the
system by pressing the power button on the IDU.
8.1.7 - Functional Block Diagram
Legend
Ethernet
GPS
DC Wiring Harness
Control
RF Wiring Harness
Modem Rx Tx
Power
Antenna Assembly –
Contains the RX LNB, TX BUC and the antenna reflector
Motors –
The motor block contains the Azimuth motor, Skew motor, and the Elevation actuator.
Outdoor Control Unit (ODU) –
The ODU contains a DVB/DSS receiver and controls all motor movements.
Indoor
Control
Unit
Satellite
Modem
Modem
Power
Supply
Controller
Power
Supply
Antenna
Assembly
Motors
Mechanical
Mount
Outdoor
Control
Unit
GPS
Antenna
RX
TX
DC Power &
Communication
TX
RX
AZ EL
SK
RX
Summary of Contents for 2-WAY SATELLITE INTERNET SYSTEM
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