Laying Cables - Furuno FELCOM 50 Installation Manual

Mains ground
Mains ground is secured to the common grounding point through the external supply. It is
therefore important to use the same mains branch for additional equipment connected to
the communication unit (Fax, PC w/printer, etc.).
See also "Location and grounding of units" on page 18.
1.8

Laying Cables

General
The coaxial cable for connection between the communication unit and the antenna unit
should, if possible, be laid before the equipment arrives. Make sure sufficient length of cable
is ordered.
Where exposed to mechanical wear (on deck, through bulkheads, etc.), the cable should be
protected by steel pipes.
Standard procedures should otherwise be followed for cabling in ship installations.
Special attention to existing safety regulations is required if the cable passes through zones
where there may be flammable or explosive gases. Use suitable gasproof cable glands or
bushings.
At the communication unit
The coaxial cable from the antenna unit should be given a free end of approximately 0.5 m
at the communication unit location.
ISDN telephone, telefax or analog telephone
Choose the position for the required wall sockets and lay the cables leaving a free end of
0.5 m. Also allow a free end of 0.5 m at the connection box.
ON
48V DC
SYNC
ALARM
RS-232 A RS-232 B
5 4 3 2 1 5 4 3 2 1
9 8 7 6 9 8 7 6
ISDN
ISDN
USB
1 8
8 1
ISDN
RS-422
14
Common ground