1、 TIA STANDARD ANSI/TIA-604-7A-2002 Approved: July 25, 2002 FOCIS 7 Fiber Optic Connector Intermateability Standard Type SG TIA-604-7A (Revision of TIA/EIA-604-7) AUGUST 2002 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the Telecommunications Industry NOTICE TIA Engineering Standards and Publ
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6、determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-3968-RV1, formulated under the cognizance of the TIA FO-6.3 Subcommittee on Interconnecting Devices and Passive Components.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Te
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18、AMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-604-7A i FOCIS 7 FIBER OPTIC CONNECTOR INTERMATEABILITY STANDARD TYPE SG TABLE OF CONTENTS 1 INTRODUCTION 1 2 PLUG STANDARD 3 3 SOCKET STANDARD 4 4 APPLICATIONS 6 TIA-604
19、-7A ii Page Intentionally BlankTIA-604-7A 1 FOCIS-7 FIBER OPTIC CONNECTOR INTERMATEABILITY STANDARD TYPE SG (From TIA Project No. 3968 formulated under the cognizance of TIA FO-6.3, Subcommittee on Fiber Interconnecting Devices.) This document is part of the series of fiber optic connector intermate
20、ability standards included within TIA/EIA-604, Fiber Optic Connector Intermateability Standards (FOCIS). 1. INTRODUCTION 1.1 Scope FOCIS 7 presents the intermateability standard for connectors designated Type SG, and is issued as an addendum to TIA/EIA 604, Fiber Optic Connector Intermateability Sta
21、ndards. The provisions of TIA/EIA 604 apply to this document. 1.2 Objective The requirements in FOCIS 7 have been selected with the objective of ensuring that any combination of Plugs and Sockets conforming to the requirements of FOCIS 7 will mechanically intermate, and that intermated connector ass
22、emblies will meet their common level of performance. Intermateability standards define the minimum physical attributes of mating connector components. Fully dimensioned components are not within the scope or intent of FOCIS 7. The common level of performance of an intermated connector assembly is th
23、e least demanding set of performance requirements in the separate performance specifications of each of the products in the assembly; see TIA/EIA 604. The following factors, however, shall be considered in the application of common performance: 1. Common performance does not account for intrinsic lo
24、ss between the fibers being joined; see TIA/EIA 604, section 6. There are also limitations based on the options that are available. 1. Fiber Diameter - Single-mode fibers have an established diameter tolerance conforming to a TIA product specification. Multimode fibers have an established diameter t
25、olerance conforming to a TIA product specification. Both plug and socket fiber shall be in the same diameter tolerance category. TIA-604-7A 2 2. Keying - The keying arrangement for the plugs in a connector assembly shall be compatible with the keying arrangement for the socket. 3. Contact Angle - Bo
26、th fibers in a connector assembly shall have the same contact angle. Cases of combinations of plugs and sockets where mechanical intermateability or the common level of performance is not achieved should be resolved through the cooperation of the user and the connector plug and socket manufacturer(s
27、). 1.3 Drawing practices To be in compliance with ANSI and ISO Engineering Drawing Practices, the following shall apply: 1. Where a tolerance of form is not specified, the limits of the dimensions for a feature control the form as well as the size. The combined effects of size and form variations ma
28、y not exceed the envelope of perfect form at the maximum material condition (MMC). 2. Where interrelated features of size (features shown with a common axis or center plane) have no geometric tolerance of location or runout specified, the limits of the dimensions for a feature control the location t
29、olerance as well as the size. When interrelated features are at the MMC they shall be perfectly located to each other as indicated by the drawing. 3. Where perpendicular features (features shown at right angles) have no geometric tolerance or orientation or runout specified, the limits of the dimens
30、ions for a feature control the orientation tolerance as well as the size. When perpendicular features are at the MMC they shall be perfectly oriented to each other as indicated by the drawing. 4. As the size of a feature departs from the MMC, variations in form, location and orientation are permissi
31、ble. TIA-604-7A 3 2. PLUG STANDARD 2.1 Plug designation The complete designation for a FOCIS 7 connector plug is: FOCIS 7 P n k f a where P designates that it is the Plug n is the number of fibers k defines the keying arrangement f defines the optical fiber diameter a is the angle of contact 2.2 Plu
32、g requirements FOCIS 7 Plugs shall meet the requirements of this section. 2.2.1 Plug interface dimensions The dimensional requirements for FOCIS 7 Plug intermateability are defined as follows: n = 2, figure 2.2.1, Duplex Plug Interface 2.2.2 Plug keying options Keying refers to differences in the in
33、terface between FOCIS 7 Plugs and Sockets that affect the ability of Plugs and Sockets to be connected. Only a single keying option for FOCIS 7 Plugs has been defined, k = 1. 2.2.3 Optical Fiber Diameter Specify the Plug optical fiber diameter “f” from Table 1. A single optical fiber diameter has be
34、en defined, f = 1 2.2.4 Angle of Contact The contact angle is the angle between the plane of contact between mating fibers and a plane perpendicular to the optical axis of the Plug fiber. A single contact angle of 8 for FOCIS 7 Plugs has been defined, a = 8. The requirements for a = 8 Plugs are defi
35、ned in Figure 2.2.4. TIA-604-7A 4 3. SOCKET STANDARD 3.1 Socket designation The designation for a FOCIS 7 Socket is: FOCIS 7 S n d k f a m where: S designates that it is the Socket n is the number of fibers d defines the socket design k defines the keying configuration f defines the optical fiber di
36、ameter a defines the angle of contact m defines the mounting configuration 3.2 Socket requirements FOCIS 7 Sockets shall meet the requirements of this section. 3.2.1 Socket interface dimensions The dimensional requirements for FOCIS 7 Socket intermateability are defined as follows: n = 2, figure 3.2
37、.1, Duplex Socket Interface 3.2.2 Socket interface option There are two socket interface options defined for FOCIS 7 Sockets. The requirements for these interfaces are: d=0 The design requirement on the elements of the socket that control the interface with the plug, for sockets offered under this o
38、ption, is that the sockets function with all plugs that meet the requirements for FOCIS 7, and incorporate the same number and diameters of optical fibers. d=1 The elements of the socket that control the interface with the plug, for sockets offered under this option, must meet the dimensional requir
39、ements of figure 3.2.1, Socket interface (d=1). 3.2.3 Socket keying options Keying refers to differences in the interface between FOCIS 7 plugs and sockets that affect the ability of plugs and sockets to be connected or that alter the performance of the resulting connector assembly. Only a single ke
40、ying option for FOCIS 7 Sockets has been defined, k = 1. TIA-604-7A 5 3.2.4 Socket mounting options Mounting options define dimensional requirements and attributes for external socket surfaces to ensure intermateability with mounting panel provisions and cutouts for each defined mounting design. A S
41、ocket with undefined mounting features is identified m = 0. The Socket mounting options are: m = 0 Unspecified mounting m = 1 Modular Snap-In Faceplate mounting (Fig. 3.2.4) 3.2.5 Optical Fiber Diameter Specify the Socket optical fiber diameter “f” from Table 1. A single optical fiber diameter has b
42、een defined, f = 1 3.2.6 Angle of Contact The contact angle is the angle between the plane of contact between mating fibers and a plane perpendicular to the optical axis of the Socket fiber. A single contact angle of 8 for FOCIS 7 Sockets has been defined, a = 8. The requirements for a = 8 Sockets a
43、re defined in Figure 3.2.6. f Nominal Diameter Description 1 125 m MM, SM (ANSI/TIA/EIA 4920000C; Classifications I, II, IV, and V) Table 1- Plug and Socket Optical Fiber Diameters TIA-604-7A 6 4. APPLICATIONS FOCIS 7 interface requirements may be applied to other future Type “SG” or hybrid configur
44、ations. 4.1 Receptacles A receptacle provides an optical connection to a device such as an optical source or detector. A receptacle for FOCIS 7 plugs may be based on socket dimensions from figure 3.2.1 for n = 2. 4.2 Hybrid components A hybrid component provides a mechanical and optical connection b
45、etween mated plugs of two different FOCIS connector types. TIA-604-7A 7 (See Sheet 2 for dimensions) Figure 2.2.1 - Duplex SG Plug interface, n = 2 (Sheet 1) MECHANICAL REFERENCE PLANENMPHJLCNOTE: PLUG COVER SHOWN IN OPENPOSITION (OPENINGS EXPOSE FIBER ENDS).TRANSVERSE COVER MOTION IS SELF-ACTUATED
46、BY ENTRY/EXIT FROM SOCKET.BABDACBCABWVBABBYOPTICAL FIBER,SEE NOTE 5ABEMECHANICAL REFERENCE PLANEUDAASEGFKRBFADBGOPTICAL REFERENCE PLANEBHTIA-604-7A 8 Dimensional Table: Reference Dimensions (mm) Notes Minimum Maximum A 21 B 11.85 12 C 18.5 D 18 18.3 2 Places E 3.4 F 1.17 1.27 2 Places G 19 21 H 2.2
47、4.7 J 4.5 4.7 K 2 Radius, 2 Places L 9 10.5 M 10.6 N 6 12.7 2 Places P 2.1 2.5 Latch only R 22.2 S 5.3 2 Places U 7.85 8 V 1.5 1.7 2 Places W 7.3 7.5 Y 1.7 1.9 2 Places AA 16 18 Degrees AB 23 27 AC 28 32 AD 43 See Note 3 BA 4.1 4.9 see Note 5 BB 3.4 4.2 see Note 5 BC 2.7 2.9 BD 0.6 0.8 BE 1 2 Plug B
48、ody Radius, 4 Places BF 10.5 See Note 3 BG 6 See Note 3 BH 2 Notes: 1. Latch travel shall permit Plug/Socket disengagement without interference. 2. Latch shall prevent Plug overtravel engagement with Socket. 3. Limits define minimum internal cavity for optical fiber flexure in assembly with Socket.
49、4. Internal plug structures may be added to guide fibers, limit minimum fiber bend radii, or increase fiber contact force. These structures may extend from the mechanical reference plane 10.5 mm maximum toward the plug end. 5. Dimension BA and BB tolerances denote optical fiber endfaces only. 6. Minimum optical fiber strip length shall be 7.4 mm. Uncoated optical fibers shall not extend into flex region of the mated interface. Figure 2.2.1, Plug interface, n = 2 (sheet 2) TIA-604-7A 9 Dimensional Table: Reference Dimensions (mm) Notes Minimum Maximum AB
