Installation manual

Start-up procedures
101
851-164510 / Rev.E
9.3 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 must be started first.
Figure 28 The SP90
Transceiver Unit power
system
Observe the following procedure to start up the stand-by power
supply. To ensure correct operation, tick off every item when the
action has been carried out.
1 Check that the mains input connector P201 on the front of
the power supply in the Transceiver Unit is disconnected.
2 Check that the switch S202 on the front of the power
supply is set in the Off (middle) position.