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7. Glossary
The following is a glossary of terms used both within this User Guide and when talking about digital
satellite television systems and DIRECTV.
Azimuth – refers to the azimuth axis, indicating the rotating movement of the antenna about an axis
perpendicular to the surface. Looking down on the antenna from above, the azimuth movement is
either clockwise or counterclockwise.
Azimuth Angle – the angle from true north or from the vessel’s fore and aft center line, in a plane
parallel with the surface, to which the antenna is pointing. In general, the angle increases as the
antenna turns clockwise, as viewed from above.
DBS – Direct Broadcast Satellite. A special high power TV satellite that broadcasts directly to the
consumers.
Satellite Receiver – an electronic device which decodes and processes the data. Usually, this data
produces a viewable picture that can be displayed on a television set.
Elevation – usually refers to the elevation axis, indicating a rotating movement of the antenna about
an axis parallel to the surface.
Elevation Angle – the angle between the surface and the antenna’s pointing angle. The values can
range from 0º (parallel with the surface) to 90º (straight up in the sky) to 180º (parallel with the
surface again, but in the opposite direction from 0º.)
LNBF – low noise block converter-feed.
Latitude – the angular distance north or south of the equator.
Longitude – the angular distance east or west of the prime meridian at Greenwich, England.
Peak – see signal peak.
Peaking – the process of locating the peak signal strength.
Signal Peak – in referencing the DBS-30500 system, it is the position of the antenna at which the
signal received by the receiver is strongest.
