Processing of Information. Data Exchange on 130 mm (5.25 in) Encased Flexible Discs Using Frequency Modulation Recording at 7958 ftprad, 3.8 tpmm (96 tpi) on Both Sides. Part 1: Dimensional, Physical and Magnetic Characteristics

This technical document establishes comprehensive specifications for the physical and dimensional characteristics of flexible disk cartridges with a 130 mm diameter. It defines the precise requirements for data interchange using frequency modulation recording techniques, specifically targeting configurations with 7,958 tracks per inch and a density of 3.8 tracks per millimeter on both surfaces. The content details the necessary physical attributes, including track geometry and magnetic properties, to ensure compatibility and reliable operation across different systems. The text outlines the geometric tolerances and material standards essential for the manufacturing of these storage media. Furthermore, it provides guidelines for the magnetic recording parameters required to maintain data integrity during storage and retrieval processes. This framework supports consistent implementation of data exchange protocols by standardizing the interface between hardware and media. The document serves as a reference for technical specifications, ensuring uniformity in the design and production of flexible disk cartridges for data storage applications within the relevant industry sector.