M00018365
New product
ISO/IEC DIS 25434 2008 Edition, February 29, 2008 INFORMATION TECHNOLOGY - DATA INTERCHANGE ON 120 MM AND 80 MM OPTICAL DISK USING +R DL FORMAT - CAPACITY: 8,55 GBYTES AND 2,66 GBYTES PER SIDE (RECORDING SPEED UP TO 16X)
In stock
Warning: Last items in stock!
Availability date: 07/14/2021
Description / Abstract:
This Ecma Standard specifies the mechanical, physical and
optical characteristics of 120 mm recordable optical disks with
capacities of 8,55 Gbytes and 17,1 Gbytes. It specifies the quality
of the recorded and unrecorded signals, the format of the data and
the recording method, thereby allowing for information interchange
by means of such disks. The data can be written once and read many
times using a non-reversible method. These disks are identified as
+R DL.
This Ecma Standard also specifies 80 mm disks with capacities of
2,66 Gbytes and 5,32 Gbytes. These disks shall have the same
characteristics as the 120 mm disks, except for some parameters
related to the smaller dimensions. All parameters unique for the 80
mm disks are specified in Annex A.
This Ecma Standard specifies
- two related but different Types of this disk (see clause
7),
- the conditions for conformance,
- the environments in which the disk is to be tested, operated
and stored,
- the mechanical, physical and dimensional characteristics of
the disk, so as to provide mechanical interchange between data
processing systems,
- the format of the information on the disk, including the
physical disposition of the tracks and sectors, the error
correcting codes and the coding method,
- the characteristics of the signals recorded on the disk, thus
enabling data processing systems to read the data from the
disk.
This Ecma Standard provides for the interchange of disks between
optical disk drives. Together with a standard for volume and file
structure, it provides for full data interchange between data
processing systems.