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1Class I vs. Class IICablingAlan FlatmanPrincipal ConsultantLAN TechnologiesEmail: a [email protected] to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
2Content1. Class I vs. Class II performance2. cable & connector construction3. relative costs for a 30m channel4. standardisation status & plansContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
3ISO/IEC TR 11801-99-140GBASE-T Cabling Guidance¾¾¾¾¾¾speculative project approved March 2012 to supportNext Gen. BASE-T initiatives underway within IEEEmotivation to offer range of options for 40GBASE-TTechnical Report route chosen to expedite processPDTR had substantial support in 1st national review2nd PDTR circulated in April 2013 for approval as DTRISO/IEC 11801-99-1 expected to be approved 1Q14Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
4Performance Requirementsfor 30m, 2- connector ChannelISO/IEC TR 11801-99-1 DeliverablesCat 6ACat 7ALegacycomponentsLegacycomponentsLegacycomponents tohigher frequencyLegacycomponents tohigher frequencyEnhancedcomponents tohigher frequencyEnhancedcomponents tohigher frequencyTutorial on Channel Capacity,Assumptions, other PHY-relatedContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
5Performance Requirementsfor 30m, 2- connector ChannelISO/IEC TR 11801-99-1 Next Generation CablingLegacy Cat 6AComponentsto 500 MHzLegacy Cat 7AComponentsto 1000 MHzLegacy Cat 7AComponentsto 1,600 MHz*Class I Channel with Class II Channel withCat 8.1 Components Cat 8.2 Componentsto 1,600 MHz*to 1,600 MHz*Next GenerationCabling for 40GTutorial on Channel Capacity,Assumptions, other PHY-related* Upper Frequency of 2 GHz For Further StudyContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
6Horizontal Balanced Cabling ModelsChannel (30m max)InterconnectEquipment CCFlexibleCordC EquipmentCFixedCableEquipmentOutlet FlexibleCordChannel ( 10m max)Equipment CC EquipmentFlexibleCordC connection (mated pair)Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
7Cable ConstructionTypical Cat 8.1/Cat 8 CableF/UTPTypical Cat 8.2 CableS/FTPOuter foil sheathTwisted pairsBraidInner foil sheathsNote: ISO/IEC 11801 & IEC 61156do not specify cable constructionContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
8ConnectorsIEC 60603-7-71IEC 60603-7RJ45 8-contacts3 - 2,000 MHzCat 3 to 6A& 8.1GG45 has a switchIEC 61076-3-1101,000 MHzCat 7AARJ45 8-contacts600 - 3,000 MHzCat 7A & 8.2IEC 61076-3-104Tera 8-contacts600 - 2,000 MHzCat 7A & 8.2Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
9Comparison of Class I & Class II ChannelsRLILTCLELTCTLISO/IEC 11801-99-1 2nd PDTRClass I ChannelISO/IEC 11801-99-1 2nd PDTRClass II Channel631 f 1000 36-10*log(f)1000 f 20006dB631 f 1000 35-9*log(f)1000 f 20008dB0.32(1.8 f 0.005f 0.25/ f) 2x0.02 f 0.32(1.8 f 0.005f 0.25/ f) 2x0.02 f1 f 1600 60-17*log(f)1600 f 2000 40dB max1 f 79.5 38-20*log(f)1 f 1600 60-17*log(f)1600 f 2000 40dB max1 f 79.538-20*log(f)CA30 f 10050dB100 f 2000 90-20*log(f)50dB30 f 100100 f 2000 90-20*log(f)PSANEXT1 f 100 100-10*log(f)100 f 2000 110-15*log(f)1 f 100 105-10*log(f)100 f 2000 0)Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
10Comparison of Class I & Class II 70.0dBPSAACRF36.0dB41.0dB41.0dBContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CHPerformance Advantage HighlightedISO/IEC 11801-99-1 2nd PDTR ISO/IEC 11801-99-1 2nd PDTRClass I Channel @ 1GHzClass II Channel @ 1GHz
11Class I/II Channel RL Performance20181614dB1210Class II8Class EAClass FAClass I61101001000Frequency (MHz)Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH10000
12Class I/II Channel IL & NEXT Performance8070NEXT 60(dB)Class FA5040Class EA30IL(dB)Class IIClass I20100m1030m0110100Frequency (MHz)1000Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH10000
13Class I/II PSANEXT Performance1009080dB 70Class IIClass I60Class FA50Class EA401101001000Frequency (MHz)Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH10000
14Class I/II PSAACR-F Performance100908070dB605040Class IIClass FA30Class IClass EA20110100Frequency (MHz)1000Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH10000
15Capacity Assessment10GBASE-TSuppressionCase 1:Fixed AssumptionsCase 2:Variable AssumptionsNEXT Noise SuppressionCN 40dBCN variableFEXT Noise SuppressionCF 25dBCF variableEcho Noise SuppressionCR 55dBCR variableTransmit Signal PowerTp 3dBmTp 3dBmBackground Noise PSDBN -150dBm/HzBN -150dBm/HzPSANEXT Noiseignored due toscreeningignored due toscreeningPSAACRF Noiseignored due toscreeningignored due toscreeningContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
16Class I/II Capacity AssessmentBackground noise level Tp – BN – 10log(f)Margin to Capacity based on bliss 01 0912 NGBTContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
17Class I/II Capacity Assessmentreduce CN CF forsame margin as Class ICN 20dB lessCF 20dB lessContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
18Cable Dimensions¾8 major cabling suppliers surveyed for cable ODs¾ suppliers produce both F/UTP & S/FTP cables¾ LSZH solid conductor cable types considered¾Cat 8.1 cable an enhanced version of Cat 6A F/UTP¾ Cat 6A F/UTP OD in range 6.8 - 7.4 mm (mean 7.1 mm)¾ Cat 8.1 F/UTP OD 7.6mm (larsen 01a 1112 NGBT)¾Cat 8.2 cable an enhanced version of Cat 7A S/FTP¾ Cat 7A S/FTP OD in range 7.2 - 7.8 mm (mean 7.5 mm)¾ Cat 8.2 S/FTP OD 8.0mm (early products)Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
19Relative Costs¾7 major cabling suppliers surveyed for component prices¾ suppliers produce UTP, F/UTP and S/FTP cables¾ LSZH cable types considered (no plenum types)¾ average 2012 supplier volume EMEA selling prices¾relative mean cost of 30m, 2-connector channel calculated as:¾ 2m cord 26m cable 2m cord¾ 3 different Cat 7A connector types *Cat 6A¾Cat 7AUTPF/UTPS/FTPS/FTP126%100%102%104% - 136%*cost of enhancement of Cat 6A to Cat 8.1 & Cat 7A to Cat 8.2considered to be similarContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
20ISO/IEC TR 11801-99-1Plan for Completion & Next Steps¾¾¾¾¾2nd PDTR circulated in April for approval as DTRISO/IEC 11801-99-1 planned to be published 1Q14definition of 30m, 2-connector channels underwayguide to be provided on use of cords as channelsnew Cats/Classes to be part of ISO/IEC 11801 Ed.3¾ will be influenced by preferences within 802.3bqContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
21Class I vs. Class II CablingSummaryCable OD difference 5% greater for Class IICable bulk difference 10% greater for Class II30m channel cost difference4-36% greater for Class II(components only)NEXT & FEXT cancellationfor same margin to capacity 20dB less for Class IICost & cable bulk are NOT major decision factorsChannel performance IS a major decision factor!Contribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
22Inspiration from booth 01 0513 40GBTContribution to IEEE 802.3bq Task Force; 16-18 July 2013, Geneva, CH
Cable Construction Typical Cat 8.1/Cat 8 Cable Typical Cat 8.2 Cable Twisted pairs Inner foil sheaths Braid F/UTP S/FTP Outer foil sheath Note: ISO/IEC 11801 & IEC 61156 . Class I Channel ISO/IEC 11801-99-1 2nd PDTR Class II Channel 631 f 1000 36-10*log(f) 1000 f 2000 6dB
