Comtech EF Data DT-4500 Series - Manual (Page 53)

DT4500 Series Down Converters MN/DT4500.IOM
System Operation Revision 1
35
3.3.1 C
ONVERTER
C
OMMANDS
The converter commands are in a tree structured menu format designed for access and
execution of all control functions, and to prevent the execution of an invalid entry by the
operator. When the prime power is turned on, the LCD display will contain a message
indicating the converter model number and the version number of the firmware installed
in the converter.
To select a Command Function press the "ENT" button on the keypad. The LCD display
will indicate:
SELECT
CONFIGURATION MENU
This will provide the local operator access to the Command Function Menus, which is the
top-level structure to start the selection of Command Function Menus to input into the
converter. To sequence to the next Command Function Menu press a "DOWN" or "UP"
arrow button on the keypad. The converter will step to the next Command Function
Menu each time a "DOWN" or "UP" arrow button is pressed. The current Command
Function Menu will be displayed on the LCD display. The Command Function Menus
are shown in Figure 12.
To select a specific Command Function Menu press the "ENT" keypad button. If a
function is selected in error, press the clear ("CLR") button, which will return the
converter to the main command menus to allow the selection of another function. Any
one of the six Command Function Menus can be selected using this procedure.
Once a Command Function has been selected, use the "RIGHT" or "LEFT" arrow keypad
buttons to sequence through the Operating Mode Commands. Each of the modes will be
displayed on the LCD display. A specific operating mode is selected by pressing the
"ENT" button. If an mode is selected in error, press the clear ("CLR") button, which will
return the converter to the operating menus to allow the selection of another mode.
When an operating mode is selected, a parameter or a digit within the parameter will be
flashing on the LCD display. Use the "RIGHT" and "LEFT" arrows buttons to sequence
through the parameters or digits to select the next parameter or digit. A specific
parameter or value is selected by pressing the "ENT" button. If a parameter or value is
selected in error, press the clear ("CLR") button, which will return the converter to the
original parameter or value to allow another selection.
After selecting a parameter or digit, use the "UP" or "DOWN" arrow buttons to select the
next parameter, or to increment or decrement the value of a digit. A specific new
parameter or new value is selected by pressing the "ENT" button. If a parameter or value
is selected in error, press the clear ("CLR") button, which will return the converter to the
original parameter or value to allow another selection.
Each time the clear ("CLR") button is pressed, the converter will return to the menu level
prior to the last "ENT" command.