Full-Duplex Communications - Furuno FS-1575 Service Manual

4. Full-Duplex Communications

For the configurations of receiving antenna, refer to information on pages 4-73 to -78.
For ships requiring the Full-duplex operation, provide dedicated RX antenna
(example, 6-m whip antenna). In this case, keep the TX antenna as far away from the
RX antenna as possible. Installing both antennae on a compass deck will make it
difficult to perform Full-duplex communications.
Consequently, the TX antenna should be installed on the compass deck or in the wing
area, while the RX antenna should be installed on the fore mast.
1) Incorporate a DUP FIL board (option) in FS-5075T.
2) Make system settings for the Full-duplex specification as follows:
- [MENU] -> 9. SERVICE -> 3. RT SETUP -> 1. SETUP ->
- [MENU] -> 5. SYSTEM -> 7. RX SETUP ->2. SETUP ->
T/R ANT
ATU
R. ANT
R. ANT
WR1 ANT
WR1 ANT
WR2 ANT
WR2 ANT
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
TX FIL
(05P0870A)
T/R ANT
K17
TX FIL
(LPF x 8)
RX RF
K19
J3
BK ON
Q1
DIV
AMP
DIVIDER
SW
T/R ANT
K1
CR2
30M LPF
J2
R. ANT
RX BPF,
RX ANT
PRE SEL
J1
(x 5)
RX FIL
(05P0862A/B)
FS-5075T
Fig. 1.2.1 Example of Antenna Wiring
1-6
Set RX ANT to "CONNECT"
Set ANT SELECT to "RX ANT"
DUP FIL
(05P0863)
TX IN
SIMP_DUP
J1
DUP IN
J1
K1
SIMP OUT
J2
DUP OUT
J3
DIV OUT1
Option
J5
DIV OUT2
J6
LPF OUT
J3
BPF IN
J4
ANT RX
BPF OUT
RX
(05P0842)
J7
J2
DUP IN
J8
ANT WR1
WR1
(05P0847A)
J2
ANT WR2
WR2
(05P0847B)
J2
Option
1.2 Installations
For FS-5075
DUP FIL
( x 8)
J4-19
(DUP INST)