User's Manual

Con sole Mounted Trackerball and Key board (MDD-A101)
33 The keyboard allows the user to input and edit text when required during chart radar
operation (it is not essential if the system is not a chart radar, but is useful for the AIS
function).
NOTE: For buttons which have a second function shown in blue, the Fn button must be pressed
and held down before pressing the required button to enable the alternative function
(shown in blue). However, the alpha-numeric keys with a second function shown in blue
are toggled between the functions by the Num Lock button not by the Fn button. To
toggle the Num Lock function on or off press the Num Lock button.
34 The keyboard also contains a brightness button (light bulb symbol) which allows the
level of the keyboard backlighting to be set when pressed while the Fn button is held
down. Pressing the button increases the brightness, until maximum brightness is reached. There
are three levels: Off (no backlighting), Low and High. Pressing the button again sets the
brightness to minimum (no backlighting), and the level then increases again as the button is
pressed.
Page 1.16 Issue 5 (Jan 09)
KH2060-1
CD-7255
ISSUE 1
Figure 11 - Trackerball and Keyboard