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Operation | 8
locked out. The event log and any active alarms can be examined while the unit is in REMOTE mode.
FRONT PANEL
The front panel has been organized so that important information is available at a glance. Control functions and additional
status information is available through a menu system and the front panel LCD.
STATUS INDICATORS
Amplifier symbols have tricolor LEDs that display the status of each amplifier. Green light indicates normal on-line
operation; amber light indicates normal standby mode. The on-line or standby amplifier LED will turn red if a fault is
detected on that amplifier.
Transfer switch symbols have bicolor LEDs. Green lights display the switch transmission path unless there is a switch
fault; then all LEDs associated with that switch will turn red.
The Power LED will light green when power is applied to the unit.
The Alarm LED will light red to indicate an Active Alarm.
The Remote LED will light amber if the unit is in Remote Mode.
Manual or Auto LEDs will light amber if the unit is in Manual Mode or Automatic Mode, respectively.
FRONT PANEL OPERATIONS
Keypad Navigation
Enter Key -
Confirms entries. In most cases, data entry must be confirmed with an ENTER key press. Any exceptions
(e.g. Attenuation, Contrast) will be noted in that section.
Menu Key -
Brings up Main Menu, or escapes out of current mode. If a change is pending (needs confirmation), this
key cancels the change without implementing it. When the unit is not waiting on a confirmation, or screen
has nothing that can be changed, the Menu key displays the Main Menu.
Remote Key -
This key chooses the Remote/Local Screen and changes the Remote/Local Mode (ENTER key press
is needed to accept the selection).
Manual Key -
This key press chooses the Manual/Auto Screen and changes the Auto/Manual Mode (ENTER key press
is needed to accept the selection).
Alarm Key -
Brings up the Alarm Menu, which includes a list of Active Alarms and the Event Log.
Left & Right Keys -
Provide cursor navigation within a menu screen.
Up & Down Keys -
Provide navigation to different menu screens; when the cursor is a right arrow, the ↑↓ keys cycle
through parameter choices.
Liquid Crystal Display
The Liquid Crystal Display (LCD) is organized into two rows, consisting of sixteen characters each. The LCD will display all
system information and respond to all local commands available through the front panel keypad.
Beep Operations
A valid key press will be acknowledged with a beep. An error tone (longer beep) will sound with any invalid key press or
Display Timeout.