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GB/T 15127-2008: Information technology -- Telecommunications and information exchange between systems -- Twisted pair multipoint interconnections
Status: Valid GB/T 15127: Evolution and historical versions
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| GB/T 15127-2008 | English | 414 |
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Information technology -- Telecommunications and information exchange between systems -- Twisted pair multipoint interconnections
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GB/T 15127-2008
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| GB/T 15127-1994 | English | 799 |
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Information processing systems--Data communication--Twisted pair multipoint interconnections
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GB/T 15127-1994
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PDF similar to GB/T 15127-2008
Basic data | Standard ID | GB/T 15127-2008 (GB/T15127-2008) | | Description (Translated English) | Information technology -- Telecommunications and information exchange between systems -- Twisted pair multipoint interconnections | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L78 | | Classification of International Standard | 35.100.10 | | Word Count Estimation | 21,222 | | Date of Issue | 2008-09-01 | | Date of Implementation | 2009-02-01 | | Older Standard (superseded by this standard) | GB/T 15127-1994 | | Quoted Standard | GB/T 7619 | | Adopted Standard | ISOIEC 8482-1993, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the physical media characteristics: a) for the two -wire or four-wire network topology twisted pair multipoint interconnections, which provide half-duplex or full-duplex data transmission capacity, b) interconnection binary signals and endpoint systems bi-directional signal transmission, c) branch cable end systems and can be up to 1200 m of the common trunk cable electrical and mechanical design, d) integrated within the endpoint system of the generator and the receiver based components of measurement, e) the applicable data signaling rates up to 12. 5 Mbit/S. Defined characteristics and measuring electrical components with GB/T 7619 -point given the characteristics of twisted pair very consistent. | GB/T 15127-2008: Information technology -- Telecommunications and information exchange between systems -- Twisted pair multipoint interconnections
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Information technology. Telecommunications and information exchange between systems. Twisted pair multipoint interconnections
ICS 35.100.10
L78
National Standards of People's Republic of China
GB/T 15127-2008/ISO /IEC 8482.1993
Replacing GB/T 15127-1994
Information technology - Telecommunications and information exchange
Twisted pair multipoint interconnections
(ISO /IEC 8482.1993, IDT)
Posted 2009-02-01 2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
Numeral 4 indicates interchange circuits 3
5 4 interconnect configuration
56 multi-point load on the media
6.1 d. c. Loading specification 5
6.2 a. c. Loading 6
7 polar and effective level 7
Characteristics of the generator 8 7
8.1 Open circuit voltage Vp o 7
8.2 offset voltage Vp os 7
8.3 There are terminating the output voltage Vp t 7
Receiver 9 Features 9
9 9.1 Input Sensitivity
9.2 Input balance 9
10 Fault Status Test 10
10.1 generator short circuit 10
10.2 generator current limit of 10
11 environmental restrictions 11
12 Part 11 compatibility
Appendix A (informative) Guide and the notes 12
Annex B (informative) on a. c. Load measurement guide 16
GB/T 15127-2008/ISO /IEC 8482.1993
Foreword
This standard is identical with the international standard ISO /IEC 8482.1993 Flat "Information technology - Telecommunications and information exchange between the twisted pair
Multi-point interconnection "(in English).
This standard replaces GB/T 15127-1994 "Information processing systems - Data communication twisted pair multipoint interconnections."
Compared with the standard GB/T 15127-1994 The main changes are as follows.
--- This standard adds a. c. load;
--- This standard adds to Appendix B on a. c. Load measuring guide.
The change compared with the standard GB/T 15127-1994 editorial as follows.
--- The terms and definitions listed in Chapter 3;
--- The main changes to the scope of Chapter 1, the common trunk cable length from 500 meters to 1200 meters, the applicable data signal
Rate by the 1Mbit/s to 12.5Mbit/s;
--- Chapter 5 interconnect configuration original 5m to 1m.
This standard Annex A, Annex B is informative appendix.
This standard by the National Information Technology Standardization Technical Committee and centralized.
This standard was drafted. Ministry of Information Industry Institute of Electronics Industry Standardization.
The main drafters. Zhang Hui, Zhang Cui, East Wu, Nan Guo, Xu Dongmei.
This standard was first published in 1994.
GB/T 15127-2008/ISO /IEC 8482.1993
Information technology - Telecommunications and information exchange
Twisted pair multipoint interconnections
1 Scope
1.1 standard for the following areas require physical media properties.
a) for two-wire or four-wire network topology twisted pair multipoint interconnections, which provide half or full duplex data transmission capacity;
b) interconnection endpoint system binary signals and bidirectional signal transmission;
c) endpoint system and can be up to 1200m cable branch electrical and mechanical design of public trunk cable;
d) within the scope of the endpoint system and generator components measuring IC type received;
e) the applicable data signaling rates up to 12.5Mbit/s.
Electrical components and characteristics defined measuring 1.2 and GB/T 7619 gives Twisted Pair point characteristics very consistent.
1.3 This standard does not describe the complete physical interface, nor describe the functional interface features, such as.
a) the number of data interchange circuits and control circuits;
b) endpoint system branch cable connector type, size and pin assignment;
c) data and control signal coding;
d) the temporal relationship between the signals interchange circuit;
e) a synchronous or asynchronous transfer mode;
f) the quality of the signal transmission and reception.
1.4 This standard does not specify special environmental conditions, such as current insulation, electromagnetic interference (EMI), radio frequency interference (RFI) and the safety of personnel. This
Some might constitute a future issue of the Supplement.
1.5 standard specification is primarily a member of all possible configurations satisfaction interoperability provisions inadequate to ensure that its configuration is expected to be satisfied
Interoperability is to achieve accountable.
1.6 This standard may be with any appropriate set of features and additional environmental characteristics combine to meet the LAN or WAN in the field of real numbers
Data transmission requirements.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB /Electrical characteristics for balanced double-type interface circuits T 7619 in the field of data communications is usually used in conjunction with an integrated circuit device
(GB/T 7619-1987, eqvCCITT Recommendation V.11. 1984)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Use two wires and differential mode voltage of the transmission signal interchange circuits.
3.2
Balance interchange circuits, the applied common mode voltage Vp cm transverse voltage Vp tr formed (with the same differential mode voltage) ratio.
GB/T 15127-2008/ISO /IEC 8482.1993
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