Feasibility of Augmented Category 6 UTP Cable Supporting 100m by hmm90569

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									Feasibility of Augmented Category 6
   UTP Cable Supporting 100m
       10GBase-T Channels

            Bernie Hammond
                KRONE
          bhammond@kroneamericas.com




                                       1
           Tests Conducted
• ANEXT of 7 100m cables
• ANEXT of 7 two connector channels with 90m of
  horizontal cable
• Tested using UTP and ungrounded shielded
  category 6 jacks in the panel for channel tests
• Calculated power sum on each pair of the victim
  cable from 24 disturbers
• Calculated the PSANEXT to insertion loss ratio
  (AXTIR)
• Performed a Shannon capacity analysis based
  on the AXTIR results

                                     1
         Measurement Setup
• All cables arranged in a 6 around 1 bundle test
  configuration with tie wraps every 4-6 inches to
  maintain the bundle configuration (victim cable
  in the center) to within 1m of the panel
• Tested in 30m metal conduit, in metal cable tray,
  and on the floor
• Keystone style patch panel was 2m from conduit
  for the channel testing
• Standard 2m category 6 UTP patch cords were
  used from the panel to the network analyzer


                                       1
Measurement Setup




               1
Results – 100m UTP Cables Only
                               100m Cable PSANEXT & PSANEXT to Insertion Loss Ratio

                      0


                     -10


                     -20


                     -30
                                                                        -72+8*Log(f)+1.9*SQRT(f)
   Magnitude (dB)




                     -40


                     -50


                     -60


                     -70
                                                                                     Blue ANEXT          Orange ANEXT
                     -80                                                             Green ANEXT         Brown ANEXT
                                                                                     Blue AXTIR          Orange AXTIR
                     -90                                                             Green AXTIR         Brown AXTIR
                                                                                     Reference
                    -100
                           0    50   100   150   200   250      300   350      400     450         500   550   600   650

                                                             Frequency (MHz)




                                                                                                           1
                            Results - Channels
                             Channel PSANEXT & PSANEXT to Insertion Loss Ratio

                   0


                  -10


                  -20


                  -30
Magnitude (dB)




                                                            TIA contribution #767: proposed 55m Cat 6 AXTIR Limit
                  -40
                                                            -71.156+9.5414*Log(f)+1.505*SQRT(f)

                  -50


                  -60


                  -70
                                                                                     Blue ANEXT              Orange ANEXT
                  -80                                                                Green ANEXT             Brown ANEXT
                                                                                     Blue AXTIR              Orange AXTIR
                  -90                                                                Green AXTIR             Brown AXTIR
                                                                                     Reference
                 -100
                        0    50   100   150   200   250      300      350      400      450       500      550      600   650

                                                          Frequency (MHz)




                                                                                                              1
                  Results
• KRONE test lab measurements were correlated
  with SolarFlare test lab measurements
• SolarFlare assisted in performing the capacity
  analysis on the channel results
• The Shannon capacity of the channel was
  calculated with insertion loss scaled to 100m
  from the 94m measured channel
• Shannon capacity of the channel exceeds 20
  Gbit

                                     1
Results




          1
     Internal Cable Performance
To extended TIA/EIA Category 6 Limits
                                     Insertion Loss                                                                       Return Loss
                     0
                                                                                                    0
                    -10                                                                             -5
                                                                                                   -10
  Magnitude (-dB)




                    -20




                                                                                M agnitude (-dB)
                                                                                                   -15
                                                                                                   -20
                    -30
                                                                                                   -25

                    -40                                                                            -30
                                                                                                   -35
                    -50                                                                            -40
                                                                                                   -45
                    -60                                                                            -50
                           0   100   200        300          400   500   600                             0       100    200        300          400   500   600
                                           Frequency (MHz)                                                                    Frequency M Hz)




                                            NEXT                                                                              ELFEXT

                      0                                                                                  0
                     -10                                                                            -10
                     -20                                                                            -20
 Magnitude (dB)




                                                                               Magnitude (dB)
                     -30                                                                            -30
                     -40                                                                            -40
                     -50                                                                            -50
                     -60                                                                            -60
                     -70                                                                            -70
                     -80                                                                            -80
                     -90                                                                            -90
                    -100                                                                           -100
                           0   100   200         300         400   500   600                                 0    100   200         300         400   500   600
                                           Frequency (MHz)                                                                    Frequency (MHz)




                                                                                                                                   1
   Conclusions & Observations
• The UTP panel had an adverse affect on alien
  crosstalk performance of adjacent ports
• 100m UTP cable has a Shannon capacity in
  excess of 20 Gbit
• The measured channel has a Shannon capacity
  in excess of 20 Gbit
• Further improvements can be made to the cable
  design to improve the channel performance
• Based on a target Shannon capacity of 18 Gbit,
  100m channels on improved UTP cable are
  feasible without alien crosstalk mitigation

                                     1

								
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