Bosch DCN Next Generation Installation & User's Instructions page 104

DCN Next Generation | Installation and User Instructions | Central Devices
11.5.2 Navigation and operation
Refer to section 8.10.2 for information about the
navigation and operation of the configuration menu of
the audio expander. The navigation and operation of
the configuration menu of the audio expander is the
same as for the central control unit.
11.5.3 Main
When you start the audio expander, the display first
shows Starting. The display then shows the Main menu
item.
Note
If you do not turn or push the knob for three
minutes, the display automatically goes back to
the Main menu item. The display does not
automatically go back to the Main menu item
from the 2 Monitoring menu item and its
sub-menus.
The Main menu item contains:
• The name of the audio expander. The default name
is Analog Expander. You can change the name with
the 4E Unit Name menu item (refer to section 11.5.8).
• Eight VU meters that show the volume levels of the
audio inputs and audio outputs of the audio
expander (refer to section 8.10.2.5). When an control
input is disabled, an X character replaces the VU
meter of the corresponding audio input or audio
output on the display.
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11.5.4 Fault pop-up
When the audio expander detects a fault, the display
shows a message. If there is more than one message, the
display shows the most important message (refer to
table 11.13).
table 11. 1 3: Messages (low to high importance)
Messages Description
The audio expander does contain
Upgrade unit sw
the correct firmware.
You can send firmware to the
audio expander with the:
• Download and License Tool
• PC Control Software
Downloading The audio expander downloads
software.
Max. CH You have attached an audio input
mismatch or audio output to a channel that
does not exist.
No network The audio expander cannot find
the optical network.
When a fault condition is resolved, the fault message will
disappear. The messages Max. CH mismatch, and No
network go out of view when you push the knob.
11.5.5 Fault status
Use the 1 Fault Status menu item to see condition
messages of the audio expander. If there is more than
one message, the display shows the most important
message (refer to table 11.14).
table 11. 1 4: Messages (low to high importance)
Messages Description
No Fault The audio expander operates
correctly.
Max. CH You have attached an audio input
mismatch or audio output to a channel that
does not exist.
No network The audio expander cannot find
the optical network.
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