Yamaha O2R Owner's Manual page 322

212 Digital I/O, Setup, and Utilities
02R User's Guide
Magnetic—Magnetic tape device and magnetic disk device
D. Broadcast—Digital broadcast reception
Instruments—Musical instruments, microphones and the sources that
generate the original signal
A/D Conv—A/D Converter (Without copyright information)
A/D Conv with (C)—A/D Converter (With copyright information)
Solid Memory—Solid memory device
Experimental—Experimental device
Unknown—Unknown
Note: If you monitor a signal in the IEC958 Part3 (AES/EBU Professional)
format (which does not have a category code bit), the Category column will
show "AES/EBU".
• Copy—This shows the status of "C bit" (Copyright information) that
has been implemented in only the IEC958 Part 2 (Consumer) format.
The following items will be shown:
Ok—Copy allowed.
Prohibit—Copy prohibited.
Note: If you monitor a signal in the IEC958 Part3 (AES/EBU Professional)
format (which does not have a "C" bit), the Copy column will show "---".