M-Audio CO3 [4/8] Installation and setup

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