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【最新版】 GR-78 core.pdf
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An SAIC Company
Generic Requirements for the
Physical Design and Manufacture of
Telecommunications Products and
Equipment
Telcordia Technologies Generic Requirements
GR-78-CORE
Issue 1
September 1997
Comments Requested (See Preface)
ii
GR-78-CORE
Physical Design and Manufacture of Telecommunications Products Issue 1
Copyright Page September 1997
Generic Requirements for the Physical Design and
Manufacture of Telecommunications Products and
Equipment
This document replaces TR-TSY-000078, Issue 2, December 1988, General Physical Design
Requirements for Telecommunications Products and Equipment and
TA-NWT-000078, Issue 3, December 1990, Generic Physical Design Requirements for
Telecommunications Products and Equipment.
TR-NWT-000078, Issue 3, December 1991, Generic Physical Design Requirements for
Telecommunications Products and Equipment.
To obtain copies of this document, contact your company’s document coordinator or your
Telcordia account manager, or call +1 800.521.2673 (from the USA and Canada) or
+1 732.699.5800 (worldwide), or visit our Web site at www.telcordia.com. Telcordia
employees should call +1 732.699.5802.
TELCORDIA TECHNOLOGIES, INC., WAS FORMERLY KNOWN AS BELL
COMMUNICATIONS RESEARCH, INC., OR BELLCORE. PORTIONS OF THIS
DOCUMENT, PREVIOUSLY PUBLISHED BY BELLCORE, MAY STILL REFLECT
THE FORMER NAME AS IT WAS EMBEDDED IN THE DOCUMENTATION UNDER
A PRIOR LICENSE FROM THE OWNERS OF THE BELL TRADEMARK, WHICH
LICENSE HAS NOW EXPIRED. THE USE OF THIS NAME DOES NOT SUGGEST
THAT TELCORDIA TECHNOLOGIES HAS LICENSED THE NAMES BELL, BELL
COMMUNICATIONS RESEARCH, OR BELLCORE FOR NEW USES OR THAT THE
OWNERS OF THE BELL TRADEMARK SPONSOR, ENDORSE OR ARE
AFFILIATED WITH TELCORDIA TECHNOLOGIES OR
ITS PRODUCTS OR
SERVICES IN ANY WAY AT THIS TIME.
This Generic Requirements document (GR) has been altered in three respects. First, the
current Telcordia Generic Requirements format has been incorporated to bring the
document into conformance with the latest Telcordia publications and formatting
standards. Second, Telcordia may have been substituted for any prior reference to Bell
Communications Research or Bellcore. Third, Telcordia Client may have been substituted
for any prior reference to Bellcore Client Company (BCC).
Copyright © 1997 Telcordia Technologies, Inc. All rights reserved. This document may not
be reproduced without the express written permission of Telcordia Technologies, and any
reproduction without written authorization is an infringement of copyright
.
Trademark Acknowledgments
Telcordia is a trademark of Telcordia Technologies, Inc.
CLEI is a trademark of Telcordia.
AXESS is a service mark of Telcordia.
Issue 1 Physical Design and Manufacture of Telecommunications Products
September 1997 Disclaimer
iii
GR-78-CORE
Telcordia Technologies Generic Requirements Notice Of Disclaimer
This Generic Requirements document (GR) is published by Telcordia Technologies
to inform the industry of the Telcordia view of proposed generic requirements. The
generic requirements are subject to review and change, and superseding generic
requirements regarding this subject may differ from this document. Telcordia
reserves the right to revise this document for any reason.
TELCORDIA MAKES NO REPRESENTATION OR WARRANTY, EXPRESSED OR
IMPLIED, WITH RESPECT TO THE SUFFICIENCY, ACCURACY, OR UTILITY OF
ANY INFORMATION OR OPINION CONTAINED HEREIN. TELCORDIA
EXPRESSLY ADVISES THAT ANY USE OF OR RELIANCE UPON SAID
INFORMATION OR OPINION IS AT THE RISK OF THE USER AND THAT
TELCORDIA SHALL BE LIABLE FOR ANY DAMAGE OR INJURY INCURRED BY
ANY PERSON ARISING OUT OF THE SUFFICIENCY, ACCURACY, OR UTILITY OF
ANY INFORMATION OR OPINION CONTAINED HEREIN.
LOCAL CONDITIONS MAY GIVE RISE TO A NEED FOR ADDITIONAL
PROFESSIONAL INVESTIGATIONS, MODIFICATIONS, OR SAFEGUARDS TO
MEET SITE, EQUIPMENT, ENVIRONMENTAL SAFETY OR COMPANY-SPECIFIC
REQUIREMENTS. IN NO EVENT IS THIS INFORMATION INTENDED TO
REPLACE FEDERAL, STATE, LOCAL, OR OTHER APPLICABLE CODES, LAWS,
OR REGULATIONS. SPECIFIC APPLICATIONS WILL CONTAIN VARIABLES
UNKNOWN TO OR BEYOND THE CONTROL OF TELCORDIA. AS A RESULT,
TELCORDIA CANNOT WARRANT THAT THE APPLICATION OF THIS
INFORMATION WILL PRODUCE THE TECHNICAL RESULT OR SAFETY
ORIGINALLY INTENDED.
This GR is not to be construed as a suggestion to anyone to modify or change any
of its products or services, nor does this GR represent any commitment by anyone,
including but not limited to Telcordia or any funder (see Preface) of this Telcordia
GR, to purchase, manufacture, or sell any product with the described
characteristics.
Readers are specifically advised that any entity may have needs, specifications, or
requirements different from the generic descriptions herein. Therefore, anyone
wishing to know any entity’s needs, specifications, or requirements should
communicate directly with that entity.
Nothing contained herein shall be construed as conferring by implication, estoppel,
or otherwise any license or right under any patent, whether or not the use of any
information herein necessarily employs an invention of any existing or later issued
patent.
Telcordia does not herein recommend products, and nothing contained herein is
intended as a recommendation of any product to anyone.
Physical Design and Manufacture of Telecommunications Products Issue 1
Disclaimer September 1997
iv
GR-78-CORE
Issue 1 Physical Design and Manufacture of Telecommunications Products
September 1997 Contents
v
GR-78-CORE
Generic Requirements for the Physical Design and
Manufacture of Telecommunications Products and
Equipment
Contents Contents
Preface.................................................................................................................Preface–1
1. Introduction............................................................................................................. 1–1
1.1 Reason for Reissue .......................................................................................1–1
1.2 Organization .................................................................................................. 1–1
1.3 Requirements Terminology ......................................................................... 1–2
1.4 Requirement Labeling Conventions ...........................................................1–2
1.4.1 Numbering of Requirement and Related Objects ........................1–3
1.4.2 Requirement, Conditional Requirement, and Objective Object
Identification ....................................................................................1–3
1.5 General Criteria.............................................................................................1–3
2. Requirements for All Products.............................................................................. 2–1
2.1 General ...........................................................................................................2–1
2.2 Electrical and Mechanical Integrity............................................................ 2–2
2.3 Administration of Requirements................................................................. 2–3
3. Materials and Finishes Requirements .................................................................. 3–1
3.1 General ...........................................................................................................3–1
3.2 Materials......................................................................................................... 3–2
3.2.1 Fire Resistance Requirements ....................................................... 3–2
3.2.2 Fire Risk Analysis ............................................................................ 3–2
3.2.3 Fluxes................................................................................................ 3–3
3.2.4 Silver.................................................................................................. 3–3
3.2.5 Silicones............................................................................................ 3–3
3.3 Finishes .......................................................................................................... 3–4
4. Separable Connector Requirements.....................................................................4–1
4.1 General ...........................................................................................................4–1
4.1.1 Design Considerations .................................................................... 4–1
4.1.2 Noble Metallizations........................................................................ 4–4
4.1.3 Base Metallizations.......................................................................... 4–7
4.1.4 Lubrication ....................................................................................... 4–7
4.1.4.1 Lubrication of Noble Metallizations..............................4–8
4.1.4.2 Lubrication of Base Metallizations................................ 4–8
4.1.5 Qualification Testing ....................................................................... 4–9
4.2 Two-Part and PWB Edge Card Connectors............................................. 4–11
4.2.1 Design.............................................................................................. 4–11
4.2.2 Polarization..................................................................................... 4–12
4.2.3 Insertion and Removal Forces ..................................................... 4–12
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