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Standard ECMA-365
Data Interchange on 60 mm Read-Only ODC - Capacity: 1,8 Gbytes (UMDTM)

(June 2005)

This Ecma Standard specifies the mechanical, physical and optical characteristics of a 60 mm, read-only ODC having a maximum capacity of 1,8 Gbytes. It specifies the physical format, the quality of the recorded signals, the format of the data and its modulation method, thereby allowing for information interchange by means of such ODCs.

This Ecma standard specifies two types of ODCs, Type A and Type B.

  • Type A: Single layer disk with maximum recorded capacity of 0,9 G-bytes
  • Type B: Dual layer disk with maximum recorded capacity of 1,8 G-bytes

Information interchange between systems also requires, at a minimum, agreement between the interchange parties upon the interchange code(s) and the specifications of the structure and labeling of the information on the interchanged ODCs.

The following file can be freely downloaded:

File name Size (Bytes) Content
ECMA-365.pdf 1 561 751 Acrobat (r) PDF file

This Ecma publication is also approved as ISO/IEC 25435.

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