Furuno FELCOM251, Руководство по установке

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2-1
2. INSTALLING THE SYSTEM
2.1 Unpacking
Unpack your FleetBroadband system and check that the following items are present:
• FB-2001 Communication Unit or
FB-2001-F19 Communication Unit for 19" Rack
• FB-1501 Antenna Unit or
FB-1251 Antenna Unit
• FB-8001 IP Handset & Cradle, wired
• Power cable
• Antenna cable
• LAN cable
• Documents
Inspect all units and parts for possible transport damage.
Note: For information on how to install the IP Handset and cradle, refer to the Instal-
lation Manual for the handset.
2.2 Placing the Antenna Unit
2.2.1 Obstructions
The antenna rotates 360° and down to - 25° for the FELCOM501 and - 60° for the FEL-
COM251 in pitch and roll, to allow for continuous pointing even in heavy sea condi-
tions. Any objects within this field can cause signal degradation.
The amount of degradation depends on the size of the object and the distance from
the antenna. As a rule of thumb any object that covers an angle of less than 3° at the
antenna has limited effect. The table below gives a guideline for the distance and max-
imum size of blocking objects in order to avoid degradation.
Distance of object Maximum size of object
3 m 16 cm
5 m 26 cm
10 m 52 cm
20 m 104 cm