Turning off the ST90
When you do not use the ST90, turn off the entire system. To power down the three Power Supply Units and the Transceiver Unit, use the functionality in the ST90 program.
Context
When you do not use the ST90, turn off the display and the Processor Unit.
Procedure
1 Select Power Off on the top bar.
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In the Power Off dialog box, select Power off or Exit to Operating System.
•  Power Off turns off the Processor Unit and the Transceiver Unit.
•  Exit to Operation System closes the ST90 program, and turns off the Transceiver Unit.
•  Both functions will also retract the transducer.
or:
2 On the Operating Panel, press Power, and keep it depressed for a few seconds.
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In the Power Off dialog box, select Power off or Exit to Operating System.
3 Wait while the ST90 program closes and theTransceiver Unit is turned off.
4 Turn off the display.
If required, refer to the instructions provided by the display manufacturer.