Installation manual

Simrad SD570 / Base version

851--160117 / B

1.2 Starting up the stand--by power supply

In order to start up the sonar units, the 24 VDC stand-by power

supply in the Transceiver Unit has to be started up first. Refer to

figure 1 and use the following procedure to start up the stand-by

power supply:

j Check that the mains input connector P201 on the front

of the power supply in the Transceiver Unit is

disconnected.

j Check that the switch S202 on the front of the power

supply is set to OFF (middle) position.

j Insert the mains fuses to the Transceiver Unit on the

ship’s mains switchboard.

j Measure the mains voltage supplied to the Transceiver

Unit.

Write the measured voltage here:...................VAC.

j Check if the voltage selector switches S201 on the power

supply and S203 on the HV power unit correspond to the

measured voltage (115V or 230V position).

j Reinsert the mains input connector P201 on the front of

the power supply.

j Check that the lamps L201 and L202 on the front of the

power supply illuminate.

j Checkthatthe small LED(LightEmitting Diode)forthe

+24Vstand--bypowerontheTransceiverInterfaceBoard

(TIB) illuminates (refer to indication on the front of the

power supply).

Now the 24VDC stand-by power is supplied both tothe HullUnit

and to the connector for the Sonar Control Unit.