GB/T 15127-2008 English PDFUS$414.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 15127-2008: Information technology -- Telecommunications and information exchange between systems -- Twisted pair multipoint interconnections Status: Valid GB/T 15127: Historical versions
Basic dataStandard 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35.100.10 Word Count Estimation: 21,222 Date of Issue: 2008-09-01 Date of Implementation: 2009-02-01 Older Standard (superseded by this standard): GB/T 15127-1994 Quoted Standard: GB/T 7619 Adopted Standard: ISOIEC 8482-1993, IDT Regulation (derived from): Announcement of Newly Approved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---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. 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 ContentsIntroduction 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 8482.1993ForewordThis 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 interconnections1 Scope1.1 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 referencesThe 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 DefinitionsThe 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 ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 15127-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 15127-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 15127-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15127-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
