User's Manual
Vi sual Dis play Unit Con trols and In di ca tors
28 The Visual Display Unit has the following controls and indicators:
(1) System Alarm. When a system alarm occurs the button is brightly lit and the
audible alarm sounds. Press the button to acknowledge the alarm and the audible
alarm is silenced.
(2) Trackerball and button backlight (light bulb symbol). Sets the level of
backlighting for the trackerball. Pressing and holding the button increases the
level of backlighting to the maximum level and then switches to minimum
backlighting (off) and starts to increase the level again. Continually pressing and
releasing the button increments the backlighting to maximum level, the next
press switches the backlight to minimum level. Levels starts to increase again as
the button is pressed.
(3) Screen backlight (down and up). Sets the level of backlighting for the visual
display unit screen. The down button decreases the level of backlighting and the
up button increases the level of backlighting. Note that pressing the down and up
buttons together resets the screen backlight to a default setting. This allows the
user to reset the backlight in the event of selecting the wrong lighting levels for
the ambient conditions, which could cause the screen to appear black. Pressing
and holding the down and up buttons for 3 seconds resets the brightness to the
previously selected level, i.e. the previously selected Daylight, Dusk or Night
setting.
(4) Display Select. This button allows the user to scroll through different system
functions, e.g. radar, ECDIS, and select a function for viewing and control. It is
only applicable to Integrated Bridge Systems or Integrated Navigation Systems
using networked displays and processors. It is not used with stand-alone displays
and processors.
(5) System On/Off. When pressed switches the complete system On or Off.
29 A loudspeaker is also incorporated within the visual display unit to provide an audible
alarm.
Page 1.14 Issue 5 (Jan 09)
KH2060-1
SYSTEM
ALARM
TRACKERBALL
AND BUTTON
BACKLIGHT
SCREEN
BACKLIGHT
DISPLAY
SELECT
SYSTEM
ON/OFF
DOWN
UP
CD-7406
ISSUE 1
Figure 9 - VDU Controls