Furuno FAR-3320W Installation Manual page 69

2.4.3 How to select the serial input/output format
How to set the termination resistors
Use the jumper blocks JP1 and JP2 on the I/O Board (24P0124) to set the termination
resistor J3 and J4 ON or OFF. The default setting is ON.
• When setting the starting/ending terminal for the multipoint connection, or multipoint
is not connected (CH1 or CH2): termination resistor ON
• When not setting the starting/ending terminal for the multipoint connection (CH1 or
CH2): termination resistor OFF
J11
Jumper block J1
1-2
2-3
1-2
2-3
Jumper block J2
1-2
2-3
1-2
2-3
J3
JP1
J4
JP2 J16 (to LAN port on PSU)
J15 (to LAN port on EC-3000)
Processor unit, I/O Board (24P0124)
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination connector: OFF
SHORT
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination connector: OFF
SHORT
Connector J3
Connector J4
2. WIRING
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