1.2.1 TracVision SA Components
The Antenna Unit includes the antenna positioning mechanism,
signal front end, power supply and control elements. These
include antenna drive controls and mechanisms, the cable wrap
subassembly, power conditioning and regulating circuits, and the
RF detector. The antenna is a parabolic dish mounting a single-
port low noise block (LNB) converter with built-in preamplifier.
A molded ABS radome encloses the baseplate and is secured in
place with standard fasteners. Liquid-tight (watertight) fittings
located on the back of the baseplate join the power, signal, and
control cabling from units inside the vehicle.
1.2.2 Integrated Receiver Decoder
The IRD receives satellite signals from the Antenna Unit for
signal decoding, processing and channel selection, and sends the
signals to the TV set for viewing. Messages are sent from the IRD
to the Antenna Unit and messages are received from the Antenna
Unit for display on the television screen. The IRD also provides
the interface for the user to activate authorization for reception.
Please refer to the User’s Manual provided with your selected
IRD for complete operating instructions.
1-2
A Guide to TracVision SA
Figure 1-2
Primary Components of the
TracVision SA
On-screen messages are not
available with a DISH Network IRD.
Radome
Antenna Unit
Mounting Plate
Antenna
Reflector
LNB
System
Control
PCB
Always lift the antenna unit by the
gray baseplate and not the radome,
antenna reflector, or internal
mechanical assemblies.
NEVER
pick up the unit by the LNB!