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MIXER & SOURCE SELEC TORS
Power Indicator
The LED on the front panel is used to indicate that power is present on the unit. However, it
also has a secondary role to indicate whether the selected channel is routing the AES/EBU or
S/PDIF input:
Red indicates AES/EBU input.
Amber indicates S/PDIF input.
The LED and remote tally flash, if the incoming audio signal is not present, to indicate that
the incoming digital signal is missing.
Illuminated Push Buttons
The front panel contains 10 illuminated push buttons, used for selecting a digital source.
The push button illuminates when the input is selected and flashes when the selected input
loses lock.
There is also a remote input to inhibit the front panel switches. When the front panel inhibit
is active, pressing the front panel switches has no effect on the current channel selection.
Headphone Output
The output available on the front panel through a ¼" stereo jack socket, is designed to drive
150 mW into 32Ωto 600Ω professional headphones.
Volume Control
The headphone output has its own volume control and has a maximum output level of
+12dBu.
Additional Modes
An option to set the unit in different modes of operation is available and can be configured
at anytime while the unit is powered.
There are currently three modes of operation: Alternate mode, Latched mode and Protected
Alternate mode: -
Alternate Mode
In this mode the channels are selected and deselected by a press of the button, as described
previously.
Latched Mode
In this mode the selected channel is active only while the button is pressed. As soon as
button is released the channel becomes inactive.
Protected Alternate Mode
Operates in a similar manner to the Alternate mode, but a channel cannot be turned off
unless switching to another input. In other words, there will always be a channel routed to
the output. NOTE: after setting this mode there will be no channel selected.
Configuring the Additional Modes
While the unit is powered, hold down the input 10 button and press the input 5 button
five times. Once completed, the input 10 button will start to flash and the first 3 input
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Redbox User Handbook No 3
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