Data Interchange on Read-only 120 mm
Optical Data Disks (CD-ROM)
2nd edition (June 1996)
This Ecma Standard specifies the characteristics of 120 mm optical
disks for information interchange between information processing
systems and for information storage, called CD-ROM.
The optical disk specified by this Standard is of the type in
which the information is recorded before delivery to the user
and can only be read from the disk.
This Standard specifies:
- some definitions, the environments in which the characteristics
of the disk shall be tested and the environments in which it
shall be used and stored,
- the mechanical, physical and dimensional characteristics of
- the recording characteristics, the format of the tracks, the
error-detecting and the error-correcting characters, and the
coding of the information,
- the optical characteristics for reading the information.
These characteristics are specified for tracks recorded with
digital data. According to this Standard, a disk may also contain
one or more tracks recorded with digital audio data. Such tracks
shall be recorded according to IEC Publication 908.
The following file can be freely downloaded:
||1 578 188
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 10149.
The previous replaced "historical" edition of this Ecma Standard is available here.