When Passing Signal Through Divider Circuit On Rx Fil Board - Furuno FS-1575 Service Manual

2. When passing signal through DIVIDER circuit on RX FIL board

To TX FIL p.c.b -> J3: RX RF
To R.ANT
J8. DUP IN
J7. BPF OUT
To RX p.c.b -> J2: ANT RX
Fig. 5.8.3 FS-1575, -2575, -5075
Note)
Circuits are the same for DIVIDER output level 1 and 2. When "DIVIDER" is set to
"ON," the [LPF OUT] output level will drop. Consequently, the [LPF OUT] cannot
be used as received signal input port.
2.1) When receiving from [T/R ANT]: FS-1575, -2575, -5075
Setting Procedure
[MENU] -> 9. SERVICE -> 3. RT SETUP -> 1. SETUP -> RX ANT
[MENU] -> 5. SYSTEM -> 7. RX SETUP -> 2. ANT SELECT
[MENU] -> 9. SERVICE -> 3. RT SETUP -> 1. SETUP -> DIVIDER
2.2) When receiving from [T/R ANT]: FS-1575, -2575, -5075
Setting Procedure
[MENU] -> 9. SERVICE -> 3. RT SETUP -> 1. SETUP -> RX ANT
[MENU] -> 5. SYSTEM -> 7. RX SETUP -> 2. ANT SELECT
[MENU] -> 9. SERVICE ->3. RT SETUP -> 1. SETUP -> DIVIDER
2.3) When receiving from [R. ANT]: FS-1575, -2575, -5075
Setting Procedure
[MENU] -> 9. SERVICE -> 3.RT SETUP -> 1.SETUP -> RX ANT
[MENU] -> 5.SYSTEM -> 7.RX SETUP -> 2.ANT SELECT
[MENU] -> 9.SERVICE -> 3.RT SETUP -> 1.SETUP -> DIVIDER
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.
To R.ANT
RX FIL
J8. DUP IN
J7. BPF OUT
To RX p.c.b -> J2: ANT RX
5-57
5.8 Reception Testing
To TX FIL p.c.b -> J3: RX RF
L=80
L=80
J2. SIMP OUT
L=80
J1. DUP IN
DUP FIL
J3. DUP OUT
Fig. 5.8.4 FS-5075 DUPLEX
Setting
DISCONNECT
Not allowed
OFF
Setting
CONNECT
TRX ANT
OFF
Setting
CONNECT
RX ANT
OFF
RX FIL