Samyung ENC SI-30A, Manual Instruction

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4. The Installation method and explanation equipment
4-1 The explanation method
4-1-1 Front side
ON Status Error TX RX
Class A AIS Transponder
SI-30A
LED Function Remark
ON The LED light is on when the power is connected. Red LED
STATUS
Status LED light is on when the Transponder receives UTC Sync
information via Internal GPS receiver, UTC Sync information is
complied.
Green LED
ERROR
The error message is on when Transponder has defects or faults in
products, when it is on the equipment’s problem and inside errors.
Red LED
TX When you send AIS data if you receive normally. Red LED
RX
When you send AIS data if you transfer normally.
Green LED