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23、ONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. ANSI/TIA-571-C TABLE OF CONTENTS FOREWORD_ iv 1. SCOPE _1 2. NORMATIVE REFERENCES _2 3. DEFINITIONS, ABBREVIATIONS, AND ACRONYMS _3 3.1. Definitions_3 3.2. Abbreviations and Acronyms _3 4. TECHNICAL REQUIREMEN
24、TS _4 4.1. General _4 Ambient Test Conditions _4 4.1.1.Test Signals _4 4.1.2.Operating Temperature and Humidity Conditions _4 4.1.3.Criteria for Basic Functionality _4 4.1.4.4.2. Physical Environment _5 Drop - Packaged _5 4.2.1.Drop - Unpackaged _5 4.2.2.Vibration _6 4.2.3.4.3. Temperature and Humid
25、ity Environment _8 Storage Thermal Soak (Long Term) _8 4.3.1.Storage Thermal Shock _8 4.3.2.Storage Cycling _9 4.3.3.Operating Conditions _9 4.3.4.4.4. Electrical Environment _10 Nominal Operating Voltage for EUT _10 4.4.1.AC Voltage Sags and Transient Interruptions Requirements _10 4.4.2.Long Term
26、AC Voltage Interruptions Requirements _10 4.4.3.Lightning Surges _12 4.4.4.Electrostatic Discharge (ESD) _16 4.4.5.Electromagnetic Interference (EMI) Immunity Requirements _19 4.4.6.Annex A (Informative) Power Line Faults _20 A.1 Overvoltage Conditions _20 A.2 Short Term Power Induction _20 Annex B
27、(Informative) Additional Considerations _21 B.1 Electromagnetic Emissions _21 B.2 System Grounding Practices _21 B.3 Telephone Line Voltages And Currents _21 B.4 Steady State Power Induction _21 B.5 Short Term Power Induction _22 B.5.1 Proposed Requirement _22 B.5.2 Proposed Method of Test _22 i ANS
28、I/TIA-571-C Annex C (Informative) Rationale for Telephone Line Overvoltage Tests _23 C.1 Sources of Overvoltage _23 C.2 Analysis of Limiting Overvoltage Conditions _23 C.3 Performance of Telecommunications User Premises Equipment _23 C.4 2-Line and 4-Wire Circuits _24 C.5 Multiple Sets _24 C.6 Wirin
29、g Simulation _24 C.7 Primary Protector Coordination _25 C.8 Test Points _25 C.9 Test Conditions _25 C.10 Failure Conditions _25 Annex D (Informative) Rationale For Surges _26 D.1 Sources of Surges _26 D.2 Traditional Telecom Surge Specification _26 D.3 Surge Types _26 D.3.1 L-type (Longitudinal) _26
30、 D.3.2 M-type (Metallic) _27 D.3.3 P-type (Power) _27 D.3.4 T-type (Transverse) _27 D.3.5 I-type (Intra-building) _27 D.4 Open Circuit Voltage and Voltage Waveform _27 D.5 Short Circuit Current and Current Waveform _27 D.6 Surge Studies and Data _28 D.6.1 Telephone line monitoring _28 D.6.2 Survey d
31、ata _28 D.7 Standards on Surges _28 D.7.1 ANSI/TIA-968-B _28 D.7.2 ANSI/IEEE C62.45 _28 D.7.3 IEC 61000-4-5 _29 D.8 Surge Likelihood _29 D.8.1 Level A and level B _29 D.8.2 Level C _29 D.9 Surges for Telecommunications Equipment _29 D.9.1 Metallic _29 D.9.2 Longitudinal _29 D.9.3 Power _29 D.9.4 Tra
32、nsverse _29 D.9.5 Ground _29 Annex E (Informative) Bibliography _30 ii ANSI/TIA-571-C Table of Figures Figure 1 Application of Surge Generators . 15 Table of Tables Table 1 Range of Temperature & Relative Humidity 4 Table 2 Temperature & Relative Humidity Test Points. 9 Table 3 AC Voltage Sag and Sh
33、ort Duration Interruption Test Points 11 Table 4 Long Term AC Voltage Interruption Test Points . 11 Table 5 Lightning Type Abbreviations 12 Table 6 High Voltage Surges Parameters 14 Table 7 ESD Response Mode Distribution 16 Table 8 ESD Discharge voltages and methods 17 iii ANSI/TIA-571-C FOREWORD (T
34、his foreword is not part of this Standard.) This document is a TIA Telecommunications standard produced by Subcommittee TR-41.7 of Committee TR-41. This standard was developed in accordance with TIA procedural guidelines, and represents the consensus position of the Subcommittee, which served as the
35、 formulating group. This standard applies to equipment located at the customer location and describes environmental conditions that could be detrimental to such equipment. The conditions are based on characteristics at the Customer Interface. Some of the tests prescribed in this standard may involve
36、 the presence of hazardous voltages and currents or other potential dangers to test personnel. Some of these hazards have been identified, and appropriate warnings have been included in the text prescribing such tests. However, appropriate safety precautions are always recommended when performing an
37、y laboratory test. There are five annexes in this Standard, all of which are informative and are not considered part of this Standard. The leadership of the TR-41.7 Environmental and Safety Considerations Subcommittee (Chair: Randy Ivans, UL LLC) acknowledges the written contributions provided by th
38、e following individuals in the development of this standard. Organization Representative Previous Versions TIA-571-C Whitesell Consulting LLC Steve Whitesell Editor UL LLC Randy Ivans Editor AST Technology Labs Inc. Don McKinnon Editor AST Technology Labs Inc. James Bress Embarq Amar Ray TE Connectivity Al Martin Telcordia Technologies Chrysanthos Chrysanthou Thermo Keytek Mike Hopkins Thomson Inc. Roger Hunt Uniden Al Baum VTech Steve Whitesell Suggestions for improvement of this standard are welcome. They should be sent to: Teleco
