25
INSTALLING THE ANTENNA
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 ACU. When the antenna is within the
block zones, the ACU works as follows.
1.
“BLOCK” will be displayed on the ACU 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 ACU will disable/mute the modem transmission.
System Cables
Before installing the system cables, you need to take the following points into
consideration.
1. All cables need to be well clamped and protected from physical damage
and
exposure to heat and humidity.
2. Cable with an acute bend is not allowed.
3. Where a cable passes through an exposed bulkhead or deck head,
a watertight
gland or swan neck tube should be used.
Power Requirement (Customer Furnished)
Intellian GX60 has been designed to work on a vessel’s power supply rated at
100-240V AC.
• RF Cable (Customer Furnished)
Due to the voltage losses across the length of the RF coax on L-Band, Intellian
recommends the following 50 ohm coax cable types for standard system
installations. For cables that run longer than 200 meters, please consult Intellian
Technologies.
Recommended
RF cables
Coaxial Cable
Type
Attenuation in
dB/100M
Attenuation in
dB/M
Recommended
Maximum Cable
Length
LMR300
30.3
0.303
35M
LMR400
19.6
0.196
60M
LMR500
15.9
0.159
80M
LMR600
12.8
0.128
100M
LMR900
8.6
0.086
150M
LMR1200
6.5
0.065
200M
Summary of Contents for GX60
Page 1: ...Global Leader in Marine Satellite Antenna Systems GX60 Installation and Operation User Guide ...
Page 2: ......
Page 4: ...INDEX ...
Page 16: ...GX60 Marine Satellite Communication System 16 ...
Page 36: ...GX60 Marine Satellite Communication System 36 ...
Page 82: ...GX60 Marine Satellite Communication System 82 ...
Page 112: ...GX60 Marine Satellite Communication System 112 ...