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50 XM-EX90
The digital audio equipment exchange audio signals in the digital forms through digital input/output
jacks, and include the CD (Compact Disc) player, MD (Mini Disc) recorder and DAT (Digital Audio
Tape) recorder. The digital audio equipment allows digital copy of signals with little deterioration of
music signals. This has made it necessary to have a copy restriction rule for protecting the copyright,
and the SCMS has been established as a result.
SCMS (Serial Copy Management System)
With a view to protecting the copyright, the SCMS restricts the number of generations permitted for
copying of signals in the digital form between digital audio equipment to only one generation.
Caution
Because of this rule, the MD obtained by recording a CD on the MD recorder cannot be copied in the
digital form on other digital equipment.
Rule on Digital Copying
2nd generation
1st generation
EN43-60.XM-EX90[J]/1 98.6.4, 0:18 PM50