2. WIRING
2-2
2.2 External Equipment
The DATA1, DATA2, DATA3, DATA4 and Ethernet ports are used to connect external
equipment such as autopilot, remote display, navigation equipment, DGPS beacon re-
ceiver.
2.3 MAIN Board
How to set the termination resistors on jumper blocks
Use the jumper block J15 on the MAIN Board (20P8209) to set the termination resistor
J6 on or off. The default setting is termination resistor: on.
• When setting the starting/ending terminal for the multipoint connection, or multipoint
is not connected: termination resistor ON
• When not setting the starting/ending terminal for the multipoint connection: termina-
tion resistor OFF
MAIN BOARD 20P8209
Factory default setting on DIP switch
Jumper block J15 Connector J6
1-2 SHORT Termination resistor: ON (default setting)
2-3 SHORT Termination resistor: OFF
DIP switch S3
No. 1 2 3 4
Factory default setting ON ON OFF OFF
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