Megasat Caravanman 85 Professional, User Manual, Page: 25 / 41

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System Components Direct Broadcast Satellite Overview
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Direct Broadcast Service (DBS) satellites broadcast audio, video and data information
from satellites located 22,000 miles in space. A receiving station, such as the antenna,
should include a dish and satellite receiver to receive the signals and process them for
use by the consumer audio and video equipment. The system requires a clear view of
the satellite to maximize the signal reception.
The antenna unit houses the antenna positi-
oning mechanism, LNB (low noise block), and
control elements within a random. Weather
tight connectors join the power, signal, and
control cabling from the below deck units.
The IDU is the system’s user interface, provi-
ding access to the system and its functions
through an LCD and three buttons. The IDU
also serves as the vessel’s junction box, al-
lowing the system to use vessel power, and
supply and receive data to/from the antenna
unit.
Antenna Unit
IDU (In Door Unit)
Figure 1-2 Satellite Blockage Figure 1-3 System Components
Objects such as tall lighthouse, bridges and big ship that block this view will cause a loss
of signal. The signal will be quickly restored once the antenna has a clear line of sight
again. Heavy rain, cloud, snow or ice may also interfere with the signal reception quality.
If the satellite signal is lost due to blockage or severe weather condition, services from
the receiver will be lost (picture will freeze frame and may disappear). When the satellite
signal strength is again high enough, then the receiver will resume providing desired
programming services.