Kongsberg Simrad ST90, Reference Manual

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2 On the
Setup
menu, select
Installation
.
Observe that the
Installation
dialog box opens. This dialog box contains a number of
pages selected from the menu on the left side.
3 On the left side of the
Installation
dialog box, select
Units
.
4 Adjust the settings to fit your requirements.
5 At the bottom of the page, select
Apply
to save your settings.
6 Continue your work in the
Installation
dialog box, or select
OK
to close it.
Related topics
Operating procedures, page 79
Defining settings related to user preferences and individual customizing, page 156
Units page, page 585
Configuring the environmental parameters
Environmental parameters such as salinity, and sound speed play an important part to present
accurate echo data. Use the
Environment
parameters to define these values. Depending on
the current sea and weather conditions, you may need to change these values frequently.
Context
In order to obtain accurate echoes, it is very important that the sound speed through the
water is set correctly. Several parameters are required to calculate the correct sound speed
value. If these parameters are not known to you, use the default value 1494 m/s. This is a
typical mean value for sound speed.
Procedure
1 Open the
Setup
menu.
2 Select
Environment
.
Observe that the
Environment
dialog box opens.
3 Specify if you work in fresh or salt water.
4 Specify the sound speed.
5 Select
OK
to save the selected settings and close the dialog box.
Operating procedures