Furuno FAR 3220, Installation Manual

Page: 43 / 245

2-1
2. WIRING
2.1 Overview
Cabling considerations
To lessen the chance of picking up electrical interference, avoid where possible rout-
ing the antenna cable (power and LAN lines) near other onboard electrical equipment
(radars, TX radio antennas, etc.). Also avoid running the cable in parallel with power
cables. When crossing with other cable, the angle must be 90° to minimize the mag-
netic field coupling.
The antenna cable between the antenna and processor units is available in lengths of
15 m, 30 m, 40 m, and 50 m. Whatever length is used, it must be unbroken; namely,
no splicing allowed. Use the antenna cable as short as possible to minimize attenua-
tion of the signal.
The radar must be connected to an emergency power source, as required by SOLAS
II-1.
About network construction
• Use the optional Switching HUB (HUB-100) to connect the sensor networks. For the
gateway networks, use the optional Intelligent HUB (HUB-3000).
• Do not connect the ship’s LAN network to the optional HUBs. Also, commercial PCs
cannot be connected to the gateway network, other than for maintenance.
• To connect the FAR-2xx7, FAR-2xx8 or FMD-32x0 series via LAN network, use the
INS network.
• This unit does not support IGMP snooping or CGMP enabled switch.
• This unit does not have a router or repeater hub function.
• The Switching HUB (HUB-100) does not support IGMP snooping or CGMP enabled
switch.
• When you use IEC61162-450 compatible sensors, set [Transmission Group] on the
[Common Installation Settings] menu. See the Instruction Manual (E32-01305-*) for
details.
• When connecting two or more FAR-2xx7 series radars, via the HUB-3000, to a
FAR-3000 series radar, the HUB-3000 IGMP querier function must also be setup.
See the Instruction Manual for the HUB-3000 IGMP querier.
• To ensure the security of the FURUNO network, be sure to connect with non-FU-
RUNO networks via the service gateway (tBOX810-83A-FL).