Block Area Setting - KNS Ku-BAND TX Installation And Operation Manual

7.2.5 Block Area Setting

The signal from a satellite to the antenna is a line-of-sight (LOS) signal which enables
ship structures to block the signal in a certain azimuth angle. When the antenna is
transmitting during this structural blockage, it may cause harmful interference or radiation.
During the initial installation, the installer can store up to three blocking areas in the ACU
flash memory, from which the ACU can determine whether the antenna is within a block
area or not, and send a contact-closure (CC) signal via the SW1 and SW2 positions. It is
normally closed (NC) for non-blocking areas. This CC can be used by the operator to
control an RF inhibit function (transmission on or off).
NOTE: The azimuth angle of the block area is calculated relatively to the ship heading.
NOTE: The operator can set the 3 elevation zones and 3 azimuth zones to the block
area.
Figure 7-31 Block Area Setting
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