Efficiencies of High Density Cabling & ConnectivityTIA Data Center Workshop

Oct 17, 2017Jim DavisRegional Marketing EngineerFluke Networks

Agenda• Intro to Fluke Networks• Typical Connectors used in Data Centers

• Single Fiber SC, LC• Ribbon Fiber MPO/MTP

• Certification and Field Testing of Installed Links• Tier I – Loss (Attenuation Testing) budgets• Tier II testing – OTDR and Troubleshooting

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Who We AreFluke Networks is the worldwide leader in certification, troubleshooting, and installation tools for professionals who install and maintain critical network cabling infrastructure.

We help network professionals ensure the performance and reliability of our connected world.

Datacom Contractors

Datacenter / Network Managers

Communications Service Technicians

Fiber Connector Types

Different fibers and fiber connectors• Most Common Today are LC and SC for duplex/serial transmission• MPO/MTP connectors for high density and parallel transmission• Single Mode or Multimode – jacket color• Multimode 50 µm or 62.5µm – do not mix

SCLC

24 fiber MPO MPO Cassette

16 Fiber – For SAN market, where switch & director blades come in eight fiber increments

24 Fiber – High density for the data center server side

Also available in more “rows” 36, 48, even higher fiber counts

12 Fiber – For plug and play cassettes in datacom environment

Also available in 8 and 10 fiber, but the form factor is the same

Multi-Fiber Connectors (MPO/MTP)

Notice PinnedAnd Unpinned

MPO Connectors offer flexibility in current and future deployments

High Density Ports on Switches can be Broken out in to Smaller Fiber Counts for Servers

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Field Certification of Installed Fibers

Please be sure to Inspect ALL Connectors before installing, clean them if necessary

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Video Microscope Clean Fiber End-face Finger Print on Fiber End-face

Tier One Testing Confirms how much Light is Lost in Transmission – “a Loss Budget”

Traditional Duplex field tester

Dedicated MPO field tester

Optical Loss Test Set (OLTS) for Two Fibers

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Multimode Light Source

Single-mode Light Source

Power MeterFor SingleAnd Multi-mode

Field Tester with MPO Port Light Source and Power Meter

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Loss Budget Calculated from TIA/ISO Specifications “Length Dependent” vs IEEE/Application specifications

• Cabling specifications have a variable loss budget

# Connectors * X dB +# Splices * Y dB +Km of Fiber * Z dB/km += Total Loss Budget

• Application Limits are based on fixed values for loss and distance

• Gigabit Ethernet allows 3.5 dB of loss and 500 meters

• 10 Gigabit Ethernet allows 2.6 dB of loss and 300 meters

• 40/100 Gigabit Ethernet allow 1.4 dB of loss and 150 meters

The best solution is to choose a custom loss budget that takes into account element of both limits – variable budgets based on the length and number of components, without exceeding the application limits

A Test Result!

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A Test Result! – Did the Test Pass?

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Yes!

A Test Result! What Test Limit was Passed?

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TIA Length Based Limit for Multimode Fiber

Finding the distance to a fault with an OTDR

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OTDR in Action

The OTDR measures reflected energy and NOT the transmitted light level.

Distance

Loss

A Bad Fiber – Problem at 107 meters

A Good Fiber

In Conclusion• MPO/MTP connectors work well for parallel transmissions• LC connectors are the trend for duplex transmissions• Inspection and cleaning are the first steps in troubleshooting• Tier I loss testing is essential to confirm that installed fiber will

support your applications• Consider using a custom loss budget

• Use an OTDR for Troubleshooting to find the distance to the fault

Thankyou,Gracias,ObrigadoJimDavis

FlukeNetworksJim.Davis@flukenetworks.com

6920 Seaway BlvdEverett, WA 98271