Simrad SN90, Руководство оператора

Страница: 55 / 188

381295/B
53
Procedure
1 Make sure that you have sufficient water depth below the keel before you lower
the transducer.
2 Select
Hull Unit
on the top bar to open the
Hull Unit
dialog box.
3 To lower the transducer select
Down
.
4 To hoist the transducer select
Up
.
5 To move the transducer to its predefined middle position, select
Middle
.
Retracting the transducer to a middle position may be useful if you use the SN90
simultaneously with other sonars. A higher position will permit you to increase the
vessel speed. If you operate in very shallow waters, you may also reduce the risk
of hitting bottom. However, placing the transducer immediately under the hull
may increase the flow noise.
Related topics
Getting started, page 51
Turning on the SN90, page 51
Turning off the SN90, page 53
Turning off the SN90
When you do not use the SN90, turn off the entire system. To power down the three
Power Supply Units and the Transceiver Unit, use the functionality in the SN90 program.
When you do not use the SN90, turn off the display and the Processor Unit.
A hull unit may be provided as an optional method to lower and hoist the transducer.
This task assumes that a hull unit is installed. If a hull unit is not installed you can
disregard information related to lowering and hoisting the transducer.
Procedure
1 Select
Power Off
on the top bar.
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 SN90 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.
Operating procedures