Datron DBS-4500 - REV A, Руководство пользователя

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M-01335, Rev. A
Page 12
8. Glossary
The following is a glossary of terms used both within this User Guide and when talking about digital
satellite television systems and DIRECTV
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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 vehicle’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.
Cable Wrap – a method of securing the cable, yet allowing the antenna to rotate freely. The DBS-
4500 has 720° of rotation. When the limit is reached the antenna will unwind.
DBS – Direct Broadcast Satellite. A special high power TV satellite that broadcasts to 18” dishes.
Satellite Receiver – an electronic device which decodes and processes the DBS data. Usually, this
data produces a viewable picture which 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.)