1、 ISO/IEC 24702 Edition 1.0 2009-09 INTERNATIONAL STANDARD Information technology Generic cabling Industrial premises ISO/IEC 24702:2006/A1:2009(E) AMENDMENT 1 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part
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8、stserv If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 ISO/IEC 24702 Edition 1.0 2009-09 INTERNATIONAL STANDARD Information technology Generi
9、c cabling Industrial premises INTERNATIONAL ELECTROTECHNICAL COMMISSION C ICS 35.200 PRICE CODE ISBN 2-8318-1064-4 AMENDMENT 1 2 24702 Amend.1 ISO/IEC:2009(E) FOREWORD Amendment 1 to International Standard ISO/IEC 24702 was prepared by subcommittee 25: Interconnection of information technology equip
10、ment, of ISO/IEC joint technical committee 1: Information technology. _ 6.2.2 Environmental classification Replace the second paragraph of this subclause by the following new text: Certain environments (e.g. nuclear, chemical, fire, explosive, damage risk from animals, salt mist) demand additional r
11、equirements beyond those of this clause. Further details on specific environments are given in ISO/IEC TR 29106. Table 2 Details of environmental classification Replace the row starting with EFT/B (comms) by the following new row: EFT/B (comms) 500 V 500 V 1 000 V 6.3.3.1 General Replace the second
12、and third paragraphs including all the bullet points by the following: This International Standard uses the optical fibre cabling channel Classes of clause 8 of ISO/IEC 11801 (2002), that is: Class OF-300 channels support applications listed in Annex E using cabled all-silica optical fibres in accor
13、dance with 8.4.1 to a minimum of 300 m; Class OF-500 channels support applications listed in Annex E using cabled all-silica optical fibres in accordance with 8.4.1 to a minimum of 500 m; Class OF-2000 channels support applications listed in Annex E using cabled all-silica optical fibres in accordan
14、ce with 8.4.1 to a minimum of 2 000 m. In addition, this standard specifies the following Classes for optical fibre cabling channels: Class OF-25 channels support applications listed in Annex E using cabled plastic optical fibre in accordance with 8.4.2 to a minimum of 25 m; Class OF-50 channels sup
15、port applications listed in Annex E using cabled plastic optical fibre in accordance with 8.4.2 to a minimum of 50 m; Class OF-100 channels support applications listed in Annex E using cabled plastic or plastic clad silica optical fibres in accordance with 8.4.2 and 8.4.3 respectively to a minimum o
16、f 100 m; Class OF-200 channels support applications listed in Annex E using cabled plastic or plastic clad silica optical fibres in accordance with 8.4.2 and 8.4.3 respectively to a minimum of 200 m; Class OF-5000 channels support applications listed in Annex E using cabled all-silica optical fibres
17、 in accordance with 8.4.1 to a minimum of 5 000 m; 24702 Amend.1 ISO/IEC:2009(E) 3 Class OF-10000 channels support applications listed in Annex E using cabled all-silica optical fibres in accordance with 8.4.1 to a minimum of 10 000 m. Table 9 Channel attenuation of optical fibre cabling channels Re
18、place Table 9 by the following new Table 9: Class Cabled optical fibre Category Maximum channel attenuation dB 650 nm 850 nm 1 300 nm 1 550 nm OF-25 OP1 (see Note 1) 7,5 - - - OF-50 OP1 (see Note 1) 12,0 - - - OP2 13,0 6,3 6,3- OF-100 OH1 - 4,0 - - OP2 23,0 9,6 9,6 - OF-200 OH1 - 5,0 - - OF-300 OM1,
19、 OM2, OM3, OS1, OS2 OF-500 OM1, OM2, OM3, OS1, OS2 OF-2000 OM1, OM2, OM3, OS1, OS2 As per ISO 11801 OF-5000 OS2 - - 4,0 (see Note 2) 4,0 OF-10000 OS2 - - 6,0 (see Note 2) 6,0 NOTE 1 The modal conditions under which the measurement is made are ffs. NOTE 2 For singlemode channels the nominal wavelengt
20、h is 1 310 nm. 7.3.1 General Replace the two paragraphs of this subclause by the following new paragraphs: Optical fibre channels shall be comprised of components that comply with Clauses 8, 9 and 10. These clauses specify physical construction (core/cladding diameter and numerical aperture) and tra
21、nsmission performance. Within the reference implementations of this clause, the cabled optical fibres used in each cabling channel shall have the same specification. When more than one physical construction or cabled optical fibre Category is used in a cabling subsystem the cabling shall be marked t
22、o allow each cabling type to be clearly identified. 4 24702 Amend.1 ISO/IEC:2009(E) Table 10 Optical fibre channel length equivalence for connecting hardware Replace Table 10 by the following new Table 10: Channel length differential m Cabled optical fibre Category Applicable channel Class Wavelengt
23、h 650 nm 850 nm 1 300 nm 1 310 nm 1 550 nm Mated connection 8,3 OP1 OF-25, OF-50 Splice Mated connection 15,0 46,0 46,0 OP2 OF-25, OF50, OF-100, OF-200 Splice Mated connection 150,0 OH1 OF-100, OF-200 Splice Mated connection 214,0 500,0 OM1/OM2/ OM3 OF-300, OF-500, OF-2000 Splice 86,0 200,0 Mated co
24、nnection 750,0 750,0 OS1 OF-300, OF-500, OF-2000 Splice 300,0 300,0 Mated connection 1 875,0 1 875,0 OS2 OF-300, OF-500, OF-2000, OF-5000, OF-10000 Splice 750,0 750,0 8.4.1 All-silica optical fibre cables Replace the first three paragraphs and Table 12 by the following three paragraphs and Table: Ca
25、bled multimode optical fibres shall meet the requirements of Categories OM1, OM2 or OM3 cable referenced in ISO/IEC 11801 as appropriate in conjunction with a completed detail specification based upon those within IEC 60794-2 or IEC 60794-3, as appropriate. Cabled singlemode optical fibres shall mee
26、t the requirements of Category OS1 specified in ISO/IEC 11801 or Category OS2 specified in Table 12 as appropriate in conjunction with a completed detail specification based upon those within IEC 60794-2 or IEC 60794-3, as appropriate. Detail specifications based upon the blank detail specifications
27、 within IEC 60794-2 or IEC 60794-3 shall be used to specify cable performance requirements under the environmental classifications of Table 2. Table 13 shows the elements of Table 2 that are not covered by these blank detail specifications and which have to be specified separately. 24702 Amend.1 ISO
28、/IEC:2009(E) 5 Table 12 Performance requirements for Category OS2 cabled singlemode optical fibre Wavelength nm Maximum attenuation dB/km 1 310 0,4 1 383 0,4 1 550 0,4 NOTE 1 The optical fibre shall comply with B1.3 fibre of IEC 60793-2-50. NOTE 2 The attenuation shall be measured in accordance with
29、 IEC 60793-1-40. NOTE 3 The cut-off wavelength of singlemode optical fibre cables shall be less than 1 260 nm when measured in accordance with IEC 60793-1-44. 8.4.2 Plastic optical fibre cables Replace the first two paragraphs and Table 14 by the following two paragraphs and Table: The optical fibre
30、 used to produce cabled optical fibre of Category OP1 shall be multimode, plastic optical fibres with a nominal cladding diameter of 1 000 m in accordance with A4a.2 fibre of IEC 60793-2-40. The cabled optical fibres shall meet the performance requirements of Table 14. Attenuation shall be measured
31、in accordance with IEC 60793-1-40. The optical fibre used to produce cabled optical fibre of Category OP2 shall be multimode, plastic optical fibres with a nominal cladding diameter of 490 m in accordance with A4g fibre of IEC 60793-2-40. The cabled optical fibres shall meet the performance requirem
32、ents of Table 14. Attenuation shall be measured in accordance with IEC 60793-1-40. Table 14 Plastic and plastic clad silica optical fibre cable performance requirements Category Maximum attenuation dB/km (see Note 1) Minimum modal bandwidth MHz km (see Note 2) 650 nm 850 nm 1 300 nm 650 nm 850 nm 1
33、300 nm OP1 (See Note 3) 180 na na 4 na na OP2 100 33 33 80 188 188 OH1 ffs 10 ffs ffs 5 ffs NOTE 1 Although the attenuation values are quoted in dB/km, the qualification measurement may be undertaken using 100 m lengths. NOTE 2 Modal bandwidth requirements apply to the optical fibre used to produce
34、the relevant cabled optical fibre Category and are assured by the parameters and test methods specified in IEC 60793-2-40. Although the modal bandwidth values are quoted in MHz km, the qualification measurement may be undertaken using100 m lengths. NOTE 3 Launch condition N.A. = 0,3. na = not aplica
35、ble ffs = for further study 8.4.3 Plastic clad silica optical fibre cables Replace the first paragraph of this subclause by the following: The optical fibre used to produce cabled optical fibre of Category OH1 shall be multimode optical fibre with nominal 200/230 m core/cladding diameter complying w
36、ith A3c fibre of 6 24702 Amend.1 ISO/IEC:2009(E) IEC 60793-2-30. The cabled optical fibres shall meet the performance requirements of the Category OH1 in Table 14. Attenuation shall be measured in accordance with IEC 60793-1-40. 9.5.1 Operating environment Replace the paragraph before Table 16 by th
37、e following: Connecting hardware shall meet the mechanical performance requirements of ISO/IEC 11801 and the transmission performance requirements of this clause as appropriate in conjunction with the performance requirements detailed in Table 16 for the relevant environmental classifications of Tab
38、le 2. E.2 Supported applications for optical fibre cabling Replace the fourth, fifth and sixth paragraphs by the following: Table E.1 contains detailed information of the greatest channel lengths supported by process monitoring and control applications for each recognised cabled all-silica multimode
39、 optical fibre category. Table E.2 contains detailed information of the greatest channel lengths supported by process monitoring and control applications for each recognised cabled all-silica singlemode optical fibre category. Table E.3 contains detailed information of the greatest channel lengths s
40、upported by process monitoring and control applications for each recognised cabled plastic optical fibre category. Table E.1 Supported applications and maximum channel lengths with all-silica multimode optical fibres Replace the table title by the following new title: Table E.1 Supported application
41、s and maximum channel lengths with cabled all-silica multimode optical fibres Table E.2 Supported applications and maximum channel lengths with all-silica singlemode optical fibres Replace the table title by the following new title: Table E.2 Supported applications and maximum channel lengths with c
42、abled all-silica singlemode optical fibres 24702 Amend.1 ISO/IEC:2009(E) 7 Table E.3 Supported applications and maximum channel lengths with plastic optical fibres Replace the table title and table by the following: Table E.3 Supported applications and maximum channel lengths with cabled plastic opt
43、ical fibres nm Core dia- meter m OP1 Network application CIL a dBL b m Class Profibus v2.0 July 1999 650 9,0 25 OF-25 Profibus (enhanced) v2.0 July 1999 650 14,0 50 OF-50 Interbus-S August 2000 650 17,2 50 OF-50 aCIL is the maximum channel insertion loss (or optical power budget, as applicable) as d
44、efined in the application standard. bL is the lower of either the maximum channel length specified in the application standard or a calculated length from the CIL with 3,0 dB allocated to connecting hardware. Annex F Introduction to environmental classification in clause 6 Delete the entire Annex F.
45、 Bibliography Insert the following new reference: ISO/IEC TR 29106, Information technology Generic cabling Introduction to the MICE environmental classification INTERNATIONAL ELECTROTECHNICAL COMMISSION 3, rue de Varemb PO Box 131 CH-1211 Geneva 20 Switzerland Tel: + 41 22 919 02 11 Fax: + 41 22 919 03 00 infoiec.ch www.iec.ch
