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Power Inlet
The Bag End Kairos DSP series unit should be connected to a suitable mains electricity supply using the
cable supplied. The processor has a switch mode power supply that is capable of operating with a nominal
mains voltage of 85V to 240V, 50/60Hz without re-configuration.
Network Expansion Port
Where a future network card can be fitted.
Audio Input Connectors
All audio connections are fully balanced and wired pin-1 ground, pin-2 hot & pin-3 cold. The two inputs have
pin-1 connected directly to the chassis and feed the signal processing chains. If an unbalanced source is
used, a connection should be made between the pin-3 ‘cold’ signal and the ground connection of the unbal-
anced source.
Audio Output Connectors
The processed outputs are impedance balanced, and wired pin-1 ground, pin-2 hot and pin-3 cold. An un-
balanced input may be driven by connecting pin-3 ‘cold’ signal to the ground connection of the unbalanced
destination input. Note that output pin-1’s are ground lifted at audio frequencies but connected to ground
at RF for good EMC performance. The intention being that the amplifiers the processor is driving should be
responsible for the grounding of their input cable shields.
Communications Port Connector
Bag End Kairos DSP series processor may be controlled entirely from another controller, typically a Personal
Computer, running an application that is compliant with the ObCom standard. Connection will normally be
made to the controller via this serial port connector. This port is also used for updating the firmware in the
unit.
(Note:) - that the communications port is NOT disabled when the front panel is made secure using the se-
cure button.
Power Inlet
Audio Output
Connectors
Serial Comms
Port
Audio Input
Connectors
Secure Mode
Switch
Expansion
Port
Rear Panel
