Intellian GX100PM, Installation And Operation Manual

Page: 22 / 139

GX100PM – Marine Satellite Communication System
22
Setting block zones
The blockages around an antenna may interfere with the reception of the satellite
signal. Therefore, It is required to set a block zone which notifies users that antenna
cannot receive satellite signal due to blockages. You can create five block zones
by inputting azimuth and elevation value with BDT. When the antenna is within the
block zones, the BDT works as follows.
1. “BLOCK” will be displayed on the BDT screen.
2.
Tracking continues as long as the signal level is greater than the predefined
threshold value. When the signal level drops below the threshold value the
antenna will wait and then re-target the satellite you targeted last. The amount
of time the antenna waits before entering search mode is called the "Search
Wait Time" and can be adjusted in the parameters settings. The antenna will
continue to re-target the satellite until the satellite is re-acquired and tracking
can be resumed.
3. A transmit inhibit output from the BDT will disable/mute the modem transmission.
RF Hazard Precautions
The antenna is designed to be used with radiation transmit equipment manufactured
by others. Exposure to RF radiation, including exposure associated with an improper
use of the transmit equipment, may be hazardous to persons close to the above
deck unit. Ensure safety of personnel who work on the system.
During transmission, ensure to keep the minimum safety distance. The recommended
minimum safety distance to the reflector on the focal line is about 25m, based on a
radiation level of 5mW/ cm2 that applies under occupational/controlled environment.
No hazard exists >20° below the antenna’s mounting plane.
Safe access from radiation hazard