Eberle Design Auxiliary Display Unit Operation Manual - page 5
Auxiliary Display Unit (ADU)
Operations Manual
Eberle Design Inc.
Page 2
Section 2
Front Panel Description
2.1 DISPLAYS
2.1.1 CHANNEL STATUS DISPLAY
Thirty two Red, Yellow, and Green LED indicators are provided by the Auxiliary Display
Unit to display the complete intersection status of the field signal inputs to the CMU-212
monitor. If the monitor is operating normally without a fault condition present, the currently
active RYG field input signal states will be displayed.
When the CMU-212 monitor is in the fault mode, all channels that were involved in the fault
will be indicated by the Blue LED indicators.
2.1.2 MAIN STATUS DISPLAY
The Main Status Display (LCD) of the Auxiliary Display Unit is used to display the current
status of the CMU-212 monitorand navigate the menu levels (see Section 3). When the
CMU-212 monitor is not in the fault mode, the Main Status display will show current monitor
status. When the CMU-212 monitor is in the fault mode, the Main Status display will show
the latched CMU-212 monitor status at the time of the fault.
2.1.3 SB#3 RXDATA INDICATOR
The SB#3 RxDATA LED indicator will be pulsed each time that a SDLC message is
correctly received from the CMU-212 monitor via Serial Bus #3. This indicator pulses
rapidly during normal operation. If the Auxiliary Display Unit is not receiving data from the
CMU-212 monitor then the Main Status Display will show an error message “NO SB3
COMM from CMU” on line #4.
2.1.4 DISPLAY LED TEST
The monitor will illuminate all front panel LED and LCD indicators for 500ms when a Reset
command is issued by the front panel RESET button or EXTERNAL RESET input of the
CMU-212. This function provides a means to check the operation of all front panel
indicators.
2.2 FRONT PANEL BUTTONS
Menu navigation is detailed in Section 3.
2.2.1 NEXT BUTTON
The NEXT navigation button is used to move to the next display window in a level of the
menu (down), move the cursor, or increment the parameter (channel, input, log number,
etc) of the current display function. Some display modes will indicate that the NEXT button
affects a parameter by displaying a “
indicated by the “
↓” symbol displayed in the lower right corner of the Main Status display.
2.2.2 BACK BUTTON
The BACK navigation button is used to move to the previous display window in a level of
the menu (up), move the cursor backwards, or decrement the parameter (channel, input,
log number, etc) of the current display function.
2.2.3 SELECT BUTTON
The SELECT navigation button is used once the cursor (
) has been placed next to the
desired parameter to enter or toggle the selection. Some display modes will indicate that
the SELECT button affects a parameter by displaying a “” symbol.