SECTION 3
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User Interface Instructions
3-2
RT5900 SERIES Mobile Mount Radio Data Terminal
The Keyboard
Accessing the Menu
Press the
LEFT SHIFT
and then the
MENU
(SPACE
) key to access the
Main Menu.
ENTER Key
Press this key to go to the next whole (parent) menu. Multiple presses of
this key cause the program to act as a loop, taking you back, eventually, to
the starting point.
1 (or 2, 3, 4, 5, etc.)
Many menus have numbered choices. You must press the corresponding
number to make a selection. If that menu remains on the display, the choice
will be high-lighted (meaning that particular function or choice is turned
ON) and you can then make additional selections from the same menu. You
must press the
ENTER
key to confirm the settings and exit this type of
menu.
In some cases, when you press a number to make a selection, a different
menu (submenu) displays. These allow you to modify the choice made in
the parent menu. After the modification(s), you may (depending on the
menu and function) be permitted to return to the parent menu to make addi-
tional selections.
Other menus require a numerical input but do not necessarily have simple
choices such as 1, 2, 3, 4, etc. Instead, you may have to enter a number
from 0--32, or 1--255, or some other figure. These instances will be detailed
in the text that applies to those menus or in the menu drawings.
UP Arrow and DOWN Arrow
Use these keys to adjust the length and volume of the audible (buzzer) func-
tions, Keyclick and Error Tone. The arrow keys adjust other functions such
as the contrast on the display and the screen size.
Arrow keys can be made to function more efficiently, in many cases, by
pressing the
FUNC
or
ALT
key, then pressing the desired arrow key.
Entry Errors
The message “Range is” displays and the numerical value of the range is
shown. You must enter a value within that range.
