Measurement Circuits; When Not Passing Signal Through Divider Circuit On Rx Fil Board - Furuno FS-1575 Service Manual

5.8.2 Measurement Circuits

Signal receiving paths vary with system settings. For details, refer to information on
page 4-73.

1. When not 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. 5.8.1 FS-1575, -2575, -5075
1.1) 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
1.2) 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
1.3) 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)
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It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
RX FIL
J8. DUP IN
J7. BPF OUT
5-56
5.8 Reception Testing
To TX FIL p.c.b -> J3: RX RF
To R.ANT
L=80
L=80
J2. SIMP OUT
L=80
J1. DUP IN
J3. DUP OUT
To RX p.c.b -> J2: ANT RX
Fig. 5.8.2 FS-5075 DUPLEX
Setting
DISCONNECT
Not allowed
OFF
Setting
CONNECT
TRX ANT
OFF
Setting
CONNECT
RX ANT
OFF
RX FIL
DUP FIL