OPERATION FROM AN ACTIVE FRONT PANEL (Optional)
All operational parameters and selections are made using a system of menus displayed in two LCD windows.
Menus are selected by push buttons and further menu selections made by rotating a spinwheel and pressing a
push button.
The spinwheel also allows continuously variable parameters, e.g. Gain, to be adjusted and the setting to be seen
in the LCD window.
Various specific operations may be achieved by operating dedicated push buttons.
The Menu System
(See ‘MDD550 series Menu System’ drawing opposite)
The system may be considered structured as a set of menus and sub-menus which are displayed in the central
LCD window. The left hand LCD window will display the current input/output standard selections of the unit and
information messages.
The highest level menu is called the Main Menu and contains the names of the lower-level menus which may be
scrolled through using the spinwheel.
The sub-menu may be then be selected by pressing the push button adjacent to the arrowhead in the text line of
the menu name.
This sub-menu will then be displayed in the window and will have the option of selecting another sub-menu in
the same manner, or allow the adjustment of a particular parameter.
Parameters enabled will appear as highlighted reverse text (white text on a black background)
Note that the spinwheel will only be operative when the LED labelled ADJUST is illuminated, indicating that a
menu with more than four text lines is being displayed. Operating the spinwheel then allows the other text lines
to be displayed.
SECTION 4
Operation
MDD550050398
Software Version 1.3.1 onwards 4.10
