ANSI INCITS 179-1990 信息系统.接触式起止金属薄膜存储磁盘.9.5-mm(3.740-in)外径和25-mm(0.984-in)内径及1.27-mm(0.050-in)厚度的每磁道

标准号：ANSI INCITS 179-1990
中文标准名称：信息系统.接触式起止金属薄膜存储磁盘.9.5-mm(3.740-in)外径和25-mm(0.984-in)内径及1.27-mm(0.050-in)厚度的每磁道83333磁通转变次数 代替ANSI X3.179-1990
英文标准名称：Information Systems - Contact Start-Stop Metallic Thin-Film Storage Disk - 83 333 Flux Transitions per Track 9.5-mm (3.740-in) Outer Diameter and 25-mm (0.984-in) Inner Diameter and 1.27-mm (0.050-in) Thickness Replaces ANSI X3.179-1990
标准类型：L64
发布日期：1990/1/1 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L64
国际标准分类号：35.220.21
适用范围：Provides the mechanical, physical and magnetic properties of a low-friction disk with a diameter of 95 mm (3.740 inches) and with a typical recording density of 31.5 tracks per millimeter (tpmm) (800 trakcs per inch (tpi)) with 567 flux transitions per millimeter (ftpmm) (14 400 flux transitions per inch (ftpi)) at a radius of 23 mm (0.900 inch).