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RC4600 ACU Board Set
Chapter 2
Hardware
The following diagram shows a typical range of movement for mobile satellite antennas. Note that
elevation movement to the stow position is limited about a small range of azimuth movement in order to
ensure safe stowing of the antenna.
In the azimuth axis, movement in one direction is disabled when clockwise and counterclockwise limit
switches are activated. There is also typically a region in the center of azimuth travel indicating that the
azimuth axis is in a position that will allow for moving the elevation axis down to the stow position.
In the elevation axis, there are typically three limit switches. The UP switch prevents further movement
up. The "DOWN" switch delimits the elevation the mount may not move further downward unless it has
been placed in the azimuth stow region. The STOW switch indicates when the mount has reached its
furthest down position which is typically where the dish is stowed for travel.
The following diagram shows a typical range of movement for fly-away satellite antennas. Note that
elevation movement below the down limit is prohibited at all points in azimuth.
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