IEC 61300-3-27 Ed. 1.0 b:1997

IEC 61300-3-27:1997 is to measure the hole location of a multiway connector plug which has multiple fibre holes for arraying fibres and two guide holes for positioning two alignment pins. The following dimensions on the endface of the plug shall be accurately measured to satisfy the specified mechanical and optical performance of the connector:
– distance between two guide-hole centres L;
– position deviation of each fibre-hole centre P_i.