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GB/T 15131.2-1995Information processing. Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad, on 80 tracks on each side. Part 2: Track format A for 77 tracks (English PDF)

信息处理数据交换用130mm改进调频制记录的位密度为13262磁通翻转/弧度、每面80条磁道的软磁盘第二部分:磁道格式A（用于77条磁道）

GB/T 15131.2 | Evolution and historical versions

Std ID	Title	Status
GB/T 15131.2-1995	Information processing. Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad, on 80 tracks on each side. Part 2: Track format A for 77 tracks	Obsolete

GB/T 15131.2-1995 is obsolete. This page sells the obsolete edition, for projects and contracts that still cite it.

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Issued by

State Technical Supervision Bureau

Level / Type

National · Recommended

Issue date

April 6, 1995

Implementation date

December 1, 1995

Scope

GB/T 15131.2-1995 is the English-translated version of 信息处理数据交换用130mm改进调频制记录的位密度为13262磁通翻转/弧度、每面80条磁道的软磁盘第二部分:磁道格式A（用于77条磁道）.

GB/T 15131.2-1995 is the Chinese national standard "Information processing. Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad, on 80 tracks on each side.

Part 2: Track format A for 77 tracks". It was issued on April 6, 1995 by the State Technical Supervision Bureau, and took effect on December 1, 1995. It is obsolete: it has been withdrawn (abolished on January 28, 2026).

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Document preview — GB/T 15131.2-1995

National Standard of the People's Republic of China

Issued by: State Technical Supervision Bureau

Document data

1 Document data

Sector: National standard (Recommended).

Issuing body: State Technical Supervision Bureau.

Date of issue: 1995-04-06.

Date of implementation: 1995-12-01.

Status: obsolete, withdrawn on 2026-01-28.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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