B-12
Appendix B
B.2.8 Normal Operation ................................................................
When the system has been completely configured, a failure in the console’s audio engine will result in an automatic switch to the Redun-
dant Engine. The Master Audio Outputs Active button on the Redundant engine will be highlighted in orange and will continue to
process the audio until the operator chooses to switch back to the Main console engine. To do this, simply press the Master Audio
Outputs Active button on the Main console and the engine switch will take place.
Assuming that the Main console’s worksurface is functioning then the operator can continue to work normally even if the Redundant
Engine has taken over the audio processing – the two devices are mirrored.
If the Main console’s worksurface is not functioning normally then many console functions can be accessed using the Redundant Engine’s
keyboard, trackball and monitor or any other remote control device in the system.
Example Problem 1:
If power is lost on the main console or its audio engine fails.
Procedure:
The RE will automatically take control of the audio processing and its Master Audio Outputs Active button will be highlighted in orange -
the button will not necessarily change colour immediately but will update its status shortly after the switch over of audio processing.
All devices in the system will show a warning message to indicate that the main console has disconnected from the Mirror Group.
Audio can be controlled from a remote control device such as the D5TC or from the RE itself using the keyboard and trackball.
When the main console has been reinstated, the normal boot procedure will take place on power up but the console will boot into a state
where it is independent of the other devices and isolated from the racks. The Consoles and Racks panel will open automatically.
1) Press the Mirrored button in the Consoles and Racks panel.
2) Select the device from the list that you wish to Mirror from (the RE in this example).
3) Select FROM other console and Mirror Now and then press OK - the console should now be in the same state as the RE.
4) When you are ready to switch audio processing back to the main console, press the Master Audio Outputs Active button on the main
console and it will be highlighted in orange.
Example Problem 2:
If there is a problem on the main console which requires a computer reset.
Procedure:
If the Reset button on the rear panel of the main console is pressed, the RE will automatically take control of the audio processing and its
Master Audio Outputs Active button will be highlighted in orange - the button will not necessarily change colour immediately but will
update its status shortly after the switch over of audio processing.
Alternatively, you may manually switch the audio processing to the RE before pressing the main console Reset button. This can be done
using the main console or RE Master Audio Outputs Active button
All devices in the system will show a warning message to indicate that the main console has disconnected from the Mirror Group.
Audio can be controlled from a remote control device such as the D5TC or from the RE itself using the keyboard and trackball.
When the main console has been reinstated, the normal boot procedure will take place on power up but the console will boot into a state
where it is independent of the other devices and isolated from the racks. The Consoles and Racks panel will open automatically.
1) Press the Mirrored button in the Consoles and Racks panel.
2) Select the device from the list that you wish to Mirror from (the RE in this example).
3) Select FROM other console and Mirror Now and then press OK - the console should now be in the same state as the RE.
4) When you are ready to switch audio processing back to the main console, press the Master Audio Outputs Active button and it will
be highlighted in orange.
Example Problem 3:
If there is a problem on the optical fibre loop.
Procedure:
This will depend on the nature of the problem.
A single break in the loop will not affect the sytem at all as the loop's own redundancy will ensure a continuation of normal operation.
However, a red warning light will show in the bottom right corner of the Master Screen and the Optocore Loop light in the System/
Diagnostics panel will go off. A pop up message will also provide a warning.
A serious disturbance in the optical system may result in a switch over to the RE for audio processing but the main console will remain
mirrored and therefore normal operation can continue.
If you wish to switch audio processing back to the main console, press the Master Audio Outputs Active button and it will be highlighted
in orange.
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