Bosch DCN Next Generation Installation & User's Instructions page 115

DCN Next Generation | Installation and User Instructions | Central Devices
12.5.2 Navigation and operation
Refer to section 8.10.2 for information about the
navigation and operation of the menu of the digital
audio expander. The navigation and operation of the
menu of the digital audio expander is the same as for
the central control unit.
12.5.3 Main
When you start the digital 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 digital audio expander. The default
name is Digital Expander. You can change the name
with the 4C 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 digital 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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12.5.4 Fault pop-up
When the digital 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 12.8).
table 12.8: Messages (low to high importance)
Messages Description
The digital audio expander does
Upgrade unit sw
contain the correct firmware.
You can send firmware to the
digital audio expander with the:
• Download and License Tool
• PC Control Software
Downloading The digital 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 digital 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.
12.5.5 Fault status
Use the 1 Fault Status menu item to see condition
messages of the digital audio expander. If there is more
than one message, the display shows the most important
message (refer to table 12.9).
table 12.9: Messages (low to high importance)
Messages Description
The digital audio expander
No Fault
operates correctly.
Max. CH You have attached an audio input
mismatch or audio output to a channel that
does not exist.
No network The digital audio expander
cannot find the optical network.
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