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3.2 DISPLAY
The Control Board is provided with a modern pixels graphic display with blue background. Normally it
always shows a title bar (on the top line) and a status bar (on the bottom line). The 'Title bar', shows the name
of the amplifier (TV Amplifier) and the current time. If the amplifier is a single unit coupled externally with other
units in a high power transmitter, the title bar shows the amplifier number (slave address) too.
The 'Status bar' indicates the forward and reflected powers and the temperature. It also contains two symbols
for the interlock (lock) and the alarm (bell).
The bell symbol is continuously displayed in case of alarm. It blinks if there has been an alarm which has ended
but has not yet been seen by the user. It stops blinking once the Log has been checked. The interlock symbol
is displayed only when this function is enabled. It may be either a close lock, when there is no alarm (interlock
chain closed) or an open lock in case of alarm (interlock chain open).
Since the status bar is always showed on the display, regardless of the screen, the user may monitor at any
time the most important parameters and the presence of alarms while moving between different screens.
3.3 MENU
The user may see or modify locally some configuration parameters using the four buttons on the front panel.
All screens areorganized in a hierarchical menus and the user may move between them in a simple and intuitive
way. To see the menu it's sufficient to press the ESC key.
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