M-AUDIO CO3 - Manual (Page 4)

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Once valid incoming data is detected, the digital data from the source input
is converted to three digital audio outputs:
1. Optical S/PDIF, labeled "TOSlink," is output via the TOSlink connector.
2. Coaxial S/PDIF, labeled "S/PDIF," is output via the RCA jack.
3. AES/EBU, labeled "AES/EBU," is output via the male XLR jack.
While the source input stream is being converted to the three output streams,
the CO3 is also capable of processing the SCMS (Serial Copy Management
System) data, also known as the "copy protection bits." SCMS bits are
present in S/PDIF data streams (on the CO3’s RCA and TOSlink connectors)
only. The AES/EBU specification does not define any SCMS capability and
therefore the digital streams at the CO3’s AES/EBU jacks carry no SCMS
information.
The CO3 has four different modes of SCMS operation:
1. None. Regardless of what the input SCMS bits are, the SCMS output bits
are forced to the "no copy protection" setting.
2. Pass-Thru. The SCMS bits from the input are passed through untouched
to the outputs. This is the default setting when the CO3 powers up.
3. Original. Regardless of what the input SCMS bits are, the SCMS output
bits are forced to the "original copy" setting.
4. 1st Generation. Regardless of what the input SCMS bits are, the SCMS
output bits are forced to the "1st generation copy" setting.
Installation and Setup
Your CO3 box should contain this manual, the CO3, and its "wall-wart" DC
power adapter. With the CO3’s power button in the outward "off" position,
plug the appropriate end of the power adapter into the CO3’s power jack,
and the other end into a live wall socket or power strip. Leave the CO3
powered off until all connections are made.
NOTE: All CO3 inputs and outputs are transformer isolated or optically
isolated except for the coaxial S/PDIF Input (the RCA input jack). This
allows devices to be plugged into and unplugged from the CO3 while
power is on, except for the coaxial S/PDIF Input jack -- CO3 power should
be turned off before connecting to or disconnecting from the coaxial
S/PDIF Input jack.
Connect one end of the proper cable to the output of your digital audio
"source" and plug the other end into the matching CO3 input jack. Then
connect one end of another appropriate cable between the desired CO3
output jack and the input jack of some receiving digital audio device(s).
Turn on your digital audio source device, then turn on the CO3 by pressing