光纤互连设备和无源元件 基本测试和测量程序 第 3-30 部分：检查和测量 矩形套圈的端面几何形状

[中文适用范围]： IEC 61300 的这一部分描述了一种测量具有 IEC 定义的光学接口的矩形多光纤套管端面几何形状的方法。主要属性是光纤相对于端面的位置（退出或突出）、端面相对于端面的角度。 [外文原描述]： IEC 61300-3-30:2020 describes a method of measuring the end face geometry of rectangular multifibre ferrules having an IEC defined optical interface. The primary attributes are fibre position relative to the end face, either withdrawal or protrusion, end face angle relative to the guide pin bores, fibre tip radii and core dip for multimode fibres. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition: - measurement of the individual fibre tip radii; - introduction of the geometry limit (GL) metric; - introduction of the minus coplanarity metric; - new method for measuring the core dips; - all measurement regions are now identical for MM and SM fibres; - the ferrule surface angle sign convention has been changed.