Simrad SH90 - PRODUCT DESCRIPTION REV A Specifications Page 48

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IS15 General Manual
46 20220760L
The Buttons
A given press on any of the two buttons will change the mode
from ‘Heading’ to ‘Locked Course’ mode and vice versa.
The left button is used to enter set-up and installation screens.
The right button sets the lighting level. When in a set-up or
installation screen both buttons are used to change settings.
Figure 4-1 - The Buttons
4.2 Powering Up
At first time turn on please refer to section 7.13. At normal
power up, the pointer will TURN to the top, and the LCD will
show the software version for approximately one second.
The display and the pointer will then show the current heading.
Note ! It may take up to 20 seconds before the heading is displayed.
4.3 Display backlighting
Press the button and hold for 2 seconds. The display then
presents the backlighting level. Repeat pressing until desired
backlighting level. Selectable values are 1-7 and off (0).
4.4 The Heading Display
The Heading Display is the first display that is shown after
power up. The pointer shows the present heading, and so does
the LCD with the left arrow lit.
The heading may be referenced to either Magnetic or True
North. If only one type of data is available, and the other data
is required then the local magnetic variation may be entered,
or it may be read in from a GPS if one is fitted. This may
enable the display of True heading when only a magnetic
referenced heading sensor is available.
If no data is available the LCD will show four dashes, ‘----‘
and the pointer will point upwards.
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