5
2.3.3 Ground Terminal and Connection
User the provided 1.4m ground cable and connect the end of lug to the ground terminal on PASO-350 and
other end to one of the protection grounds at rack. If the ground cable is too long, please cut it to a proper
length.
2.4 VHF Antenna Installation
The quality and positioning of the antenna is the most important factor dictating AIS performance. It is
recommended that a VHF antenna with omni directional vertical polarization be specifically tuned for AIS
operation band. Since the range of VHF signals is largely decided by line of sight distance, AIS antenna
should be placed as high as possible and at least 5 meters away from any constructions made of
conductive materials.
To avoid interference, the VHF antenna location should be placed in accordance to the figure below.
We recommend you choose AMEC AIS VHF antenna. To save space, you can also choose VHF/GPS
combo antenna provided by AMEC.
2.5 GPS Antenna Installation
The GPS antenna must be installed where it has a clear view of the sky, so that it accesses the horizon
freely through 360°, with a vertical observation of 5 to 90 degrees above the horizon.
We recommend you choose AMEC AIS GPS antenna. To save space, you can also choose VHF/GPS
combo antenna provided by AMEC.
2.6 Antenna Cabling
When connecting the PASO-350 with cables(s), take note of the following precautions.
Do not bend the cables (s).
Each coaxial cable should be setup separately and can only be setup in a single cable tube.
Each coaxial cable should keep a 10m safe distance with the power cable.
Connecting port of the coaxial cable should be insulated.
Ensure a free 360˚ horizon with a
vertical observation of 5˚.
5˚
VHF
Antenna
.
Other VHF
Antenna
10m
3m The recommended horizontal
distance between GPS antennas
and other antennas is 3m.
Ensure the GPS antenna is not within
the transmitting beam of other high
power transmitting antenna.
The recommended
vertical distance
between antennas is
2m.
High power transmitting antenna
Other transmitting
antenna
The recommended
horizontal distance
between antennas
is 10m.
