3.7Testing TX/RX independently at hull unit
To check the Tx/Rx function of the hull unit independently, follow the steps below.
Note: This test should not be done at the dry dock. The transducer will be damaged.
1.Turn ON DIP switch S3#1 on the TRCPU Board (10P6926) in the transceiver unit.
2.Turn the TEST/NORMAL switch in the control unit of the hull unit to TEST.
3.Turn ON the maintenance switch in the transceiver unit.
4.Power on the transceiver unit, and then press the [DOWN] switch in the control unit for the hull unit to lower the transducer to the mid or fully lower position.
5.Confirm the MID or DN LED for the transducer position.
6.When the transducer reaches to mid or fully lower position, the transducer starts the transmission automatically with low power. Check the transmission channel.
7.Press the [UP] switch in the control unit for the hull unit to retract the transducer. Transmission stops.
8.Turn OFF the maintenance switch in the transceiver unit.
9.Turn the TEST/NORMAL switch in the control unit of hull unit to NORMAL.
10.Turn OFF DIP switch S3#1 on the TRCPU Board in the transceiver unit.
S3
TRCPU Board (10P6926)
