Intellian GX100PM, Инструкция по установке и эксплуатации

Страница: 23 / 139

23
INSTALLING THE ANTENNA
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
Intellian GX100PM 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
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