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Cim 20100401 apr_2010

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Cim 20100401 apr_2010

  1. 1. Contents Zoom In Zoom Out For navigation instructions please click here Search Issue Next Page SOLUTIONS FOR PREMISES AND CAMPUS APRIL 2010 COMMUNICATION SYSTEMS WORLDWIDE INSTALLATION PAGE 5 What is encircled flux? WIRELESS PAGE 13 In-building personal wireless infrastructure PERSPECTIVE PAGE 32 Keeping fiber endfaces clean WHAT “Buy American” MEANS FOR CABLING PAGE 21 w w w.c ablingins t all.c o m Contents Zoom In Zoom Out For navigation instructions please click here Search Issue Next Page
  2. 2. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F Why Settlefor Less ? While other manufacturers want extra for birdie performance in a cable, here at Corning Cable Systems, we thought we’d just make that par for the course. All LANscape® Solutions 50 micron multimode cables contain ClearCurve® Multimode Fiber. That’s bend-insensitive multimode – so no matter what your network faces, you’ve got signal integrity in the bag. Learn more at offers.corning.com/1-CIM-CC _______________________ © 2010 Corning Cable Systems LLC C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  3. 3. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F APRIL 2010 | VOLUME 18 NO. 4 ABOUT THE COVER The “buy American” provision in the :: FEATURES stimulus act: What does it mean for INSTALLATION premises cabling projects? TO LEARN MORE, SEE ARTICLE ON PAGE 21. 5 Encircled flux improves test equipment loss measurements The new metric improves link-loss consistency Group Publisher Susan Smith by controlling mode groups during testing. (603) 891-9447; susans@pennwell.com SEYMOUR GOLDSTEIN, FLUKE NETWORKS Chief Editor Patrick McLaughlin (603) 891-9222; patrick@pennwell.com Senior Editor Matt Vincent WIRELESS (603) 891-9262; mattv@pennwell.com Marketing Manager Joni Montemagno Art Director Kelli Mylchreest 13 Using cabling systems to support in-building personal wireless Production Manager Mari Rodriguez Senior Illustrator Dan Rodd The wires behind wireless connectivity are enabling Development Manager Michelle Blake Ad Traffic Manager Bettie Gaines dead-zone-free facilities. PATRICK MCLAUGHLIN TECHNOLOGY EDITORIAL OFFICES PennWell Corporation, 17 North America notwithstanding, shielded cabling adoption rates rise Cabling Installation & Maintenance 98 Spit Brook Road LL-1 Nashua, NH 03062-5737 Long-time and new users are contributing to worldwide Tel: (603) 891-0123, fax: (603) 891-9245 www.cablinginstall.com deployment growth. PATRICK MCLAUGHLIN CORPORATE OFFICERS Chairman Frank T. Lauinger DESIGN President and CEO Robert F. Biolchini Chief Financial Officer Mark C. Wilmoth 21 Buying American a stimulus provision and an act of wisdom TECHNOLOGY GROUP Senior Vice President & Publishing Director The provision in the American Recovery and Christine A. Shaw Senior Vice President, Audience Development Reinvestment Act can affect premises-cabling contracts Gloria Adams funded by stimulus dollars. ROBERT CARLSON, SIEMON For subscription inquiries: Tel: (847) 559-7520; Fax: (847) 291-4816 :: e-mail: cim@omeda.com; web:www.cim-subscribe.com DEPARTMENTS CABLING INSTALLATION & MAINTENANCE © 2010 (ISSN 1073-3108), is published 12 times a year, Aprilly, by PennWell Corporation, 1421 South Sheridan Road, Tulsa, OK 74112; phone (918) 835-3161; fax (918) 831-9497; www.pennwell. _ com. Periodicals postage paid at Tulsa, OK 74112 and other additional 2 Editorial Wireless worth watching offices. Subscription rate in the USA: 1 yr. $88, 2 yr. $119, BG $161; Canada/ Mexico: 1 yr. $98, 2 yr. $132, BG $178; International via air: 1 yr. $120, 2 yr. $160, BG $216; Digital: 1 yr. $60. If available, back issues can be purchased for $22 in the U.S. and $32 elsewhere. All rights reserved. No material may be reprinted. Bulk reprints can be ordered from The YGS Group (cim@theygsgroup.com). We make portions of our subscriber list available to carefully screened companies that offer products and services that may be important for your work. If you do not want to receive those offers and/or information via direct mail, please let us know 27 Editor’s Picks 10-Gig limited distance cable by contacting us at List Services Cabling Installation & Maintenance, 98 Spit Brook Road LL-1, Nashua, NH 03062. POSTMASTER: Send address changes to: Cabling Installation & Maintenance, P.O. Box 3425, Northbrook, IL 60065-3280. Return undeliverable Canadian addresses to: P.O. Box 122, Niagara Falls, ON, Canada L2E 6S4. PRINTED IN THE USA. GST No. 126813153 32 Perspective Convincing optical technicians to clean fiber endfaces Publications Mail Agreement no. 1421727 www.cablinginstall.com Cabling Installation & Maintenance APRIL 2010 1 C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  4. 4. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: EDITORIAL :: on cablinginstall.com Wireless worth watching A different but familiar form of wire- front and all security clearances had less communication is making its way been arranged. DESIGN/INSTALL/TEST into more and more building facilities. “There are more than 700 antennas, Free fiber-optic installation courses available online 802.11-based wireless local area net- 8 kilometers of fi ber-optic cable, 65 works (LANs) have long been recog- kilometers of twisted-pair cable, and nized as a complemen- 16 kilometers of coaxial cable,” in the NETWORK CABLE tary technology to wired facility. Spindler adds, “It might not be Small-diameter UTP networks within build- a typical installation because it’s such cable meets 10-Gig ings. An organization a large facility, but it is a good exam- transmission requirements installing or upgrading ple of the kinds of challenges that can its wireless LAN is not be faced,” when installing indoor DAS DATA CENTER news. What is news, or at systems. It’s also a good example of Data center manager least a growing trend, is what can be accomplished with such of the year named for facilities to install in- systems. building wireless systems that support As is the case with in-building CABLING STANDARDS the nation’s cellular or personal com- wireless LANs, there are a lot of wires Web seminar updates munications service (PCS) networks. (and sometimes fi bers, for that mat- TIA TR-42 activities The article that begins on page ter) behind those wireless communica- 13 of this issue goes into some detail tions systems. CommScope’s new sys- CONNECTIVITY about this trend, including informa- tem includes the Heliax ½-inch coaxial TECHNOLOGIES tion about a new product line that cable that comes from the Andrew Power over Ethernet CommScope recently introduced for wireless communications brand. ADC built into RJ-45 jack exactly that application—in-building emphasizes that its systems can lever- personal wireless service. age existing coaxial, twisted-pair, and WIRELESS One tidbit of information that was multimode fi ber-optic cabling that may already reside in a building in which a TIA predicts spending “left on the cutting room floor” from on wireless to soar that article is the success story of a DAS will be installed. distributed antenna system (DAS) The next time you are in a confer- installation project at Hartsfield- ence room or lobby and can’t get ser- IP CONVERGENCE Jackson Atlanta International Airport. vice on your wireless device, look at it Government users strongest The airport is about a 5.8-million as an opportunity to provide the build- adopters of VoIP square-foot facility. ADC’s vice presi- ing you’re in with a solution to better dent of product management John serve its customers. Visit cablinginstall.com for Spindler, who is quoted in the article, these and other news stories. recalls the Hartsfield-Jackson project. “Even at 5.8-million square feet the PATRICK McLAUGHLIN job was completed in a span of about Chief Editor 12 weeks. It was properly planned up patrick@pennwell.com 2 APRIL 2010 Cabling Installation & Maintenance www.cablinginstall.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  5. 5. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F Which of these is a bigger threat to your security investment? Products. Technology Services. Delivered Globally . . The wrong cabling The right cabling infrastructure can infrastructure is hinder the performance critical to the of even the most successful operation Blurred, unusable video Crystal clear video sophisticated video over minimally compliant and useful life of a over ipAssured IP-ClassSM surveillance system. Category 5e cable security system. 10+ cable Factors that affect the performance of cabling infrastructure: Anixter ipAssuredSM is an infrastructure assurance program that matches the cabling • The migration of a security • The need for Power over Ethernet infrastructure to the security equipment based on the technical, application and system to IP Plus and beyond life-cycle requirements of the user. • Minimally compliant • Installation practices Receive the best performance for the anticipated life of your security system Category 5e cable • Environmental conditions by installing an ipAssured cabling infrastructure. • Increasing bandwidth requirements • Quality of IP cable manufacturing Through the SYSTIMAX® product line, CommScope offers businesses some of the industry's highest performing, most intelligent network infrastructure solutions for data, voice, video and building management applications in both wired and wireless networks. All SYSTIMAX solutions are backed by CommScope Labs and a 20-year applications assurance warranty. Contact your local Anixter representative or visit anixter.com/ipassured10 to learn how Anixter ipAssured can protect your security investment. 1.800.ANIXTER anixter.com © 2010 Anixter Inc. Anixter is a leading global supplier of communications and security products, electrical and electronic wire and cable, fasteners and other small components. We help our customers specify solutions and make informed purchasing decisions around technology, applications and relevant standards. Throughout the world, we provide innovative supply chain management services to reduce our customers’ total cost of production and implementation. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  6. 6. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F ________________________________________ C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  7. 7. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: INSTALLATION :: Encircled flux improves test equipment loss measurements predetermined launch condition from a multimode source. The new metric improves link-loss consistency Imagine this scenario. An instal- by controlling mode groups during testing. lation team installs a fi ber plant, tests each fi ber, and delivers the results to SEYMOUR GOLDSTEIN, FLUKE NETWORKS the building owner showing that all fi bers have passed a certification test Encircled flux (EF) is a new metric for implementation of EF as the result of for fi ber link loss. For a typical fi ber defi ning launch conditions on multi- collaboration between test equipment loss, the installation technician mea- mode fi ber. It was developed by opti- suppliers, fi ber and connector manu- sures 2.0 dB using a light source and cal experts to reduce variability in facturers, and cabling providers. power meter. link-loss measurements shown by dif- The building owner then decides to ferent test equipment and to correlate Which multimode reading to trust? spot check a few fi bers using his own test results to conservative launch- Multimode loss testing can be con- equipment, which includes a different condition performances in Gigabit fusing because no one knows which light source. He gets a different result. Ethernet fi ber transceiv- He may measure 3.0 dB for ers. Compared to previ- EF 850nm for 50μm cabling, EF template the same link that mea- ous launch conditions and 1 sured 2.0 for the installa- .9 EF Radial Bounds standards, EF will greatly 10μm, .2690 – .3820 tion crew. .8 improve link-loss measure- .7 15μm, .5838 – .6977 As either an installa- 20μm, .8948 – .9247 Template ment consistency. .6 tion contractor or a cabling- 22μm, .9645 – .9767 .5 Target The standards speci- plant manager, do you have .4 OFL fying multimode launch to imagine the above sce- .3 conditions have evolved 850nm/ 50μm; 1310nm/50μm nario, or has it actually .2 over the last two decades. 850nm/62.5μm; 1310nm/62.5μm happened to you? It has in .1 Simple mode fi lters (the fact happened to many. 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 process commonly known Radius (μm) Which source is right? It as wrapping fi ber around depends on several factors. a mandrel) have been The circle in this template for 850-nm, 50-μm encircled flux, First, it depends on the shown at 22 μm, indicates the area that most affects loss replaced with near field launch conditions of the measurements. measurements of opti- light source. A light-emit- cal power profi les, resulting in fi nely tester is providing the “correct” read- ting diode (LED)-based source might tuned “launch controllers” that pro- ing due to variability in light-source provide a different test result than a vide EF-compliant testing in the field. launch conditions. Until the last few laser-based source. Second, it depends The work done in standards groups years, there was no need for a pre- on the number of mode groups sup- has advanced the study and practical cise method and metric to defi ne a ported by the source and the test www.cablinginstall.com Cabling Installation & Maintenance APRIL 2010 5 C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  8. 8. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: INSTALLATION :: cord. Most importantly, it depends on Fiber under test which source most closely matches Mandrel* the network to be tested. The closer the launch conditions are between the test source and the network trans- ceiver, the better the results will be. Because optical power meters are *Mandrel used only for calibrated and traceable, there is usu- 850/1300nm testing ally good agreement between various suppliers’ test instruments. However, while multimode light sources can be calibrated for optical output power, this is not necessarily the case for their launch conditions. The ideal sit- Fiber under test uation is to use a source that closely Mandrel* matches the launch conditions of the transceiver; for Gigabit Ethernet trans- ceivers that typically use vertical-cav- ity surface-emitting lasers (VCSELs), the most-similar launch condition mir- *Mandrel used only for rors that of EF. Consequently, by using 850/1300nm testing test gear that is EF-compliant, one can be assured that a VCSEL-based transceiver will have similar link-loss (attenuation) characteristics. Testing Depending on the light source’s launch conditions and the number of mode groups to the EF standard is important the source and test cord support, two tests of the same fi ber-optic link using because it tests the fi ber link to the different light sources may yield different results. worst-case situation and almost guar- antees good network performance. EF measurements became important. Organization for Standardization High-speed 850-nanometer VCSELs and International Electrotechnical Encircled flux defined and OM3 and OM4 laser-optimized Commission’s standard ISO/IEC EF is a multimode launch-condition wide-bandwidth fi ber came together 14763-3 Information Technology – metric that serves several purposes. to create this “game changer.” EF Implementation and Operation of Its fi rst intention is to reduce link- targets 850 nm and 50-μm cabling Customer Premises Cabling – Testing loss variation when using different because that is where the Gigabit of Optical Fibre Cabling. The metric is light sources so test results are simi- Ethernet components are used. now superseded by EF because it was lar, independent of the supplier. This Fluke Networks and other experts found that channel or link loss consis- variation has been limited to ± 10% developing international standards tency using sources compliant with for link loss higher than 1 dB. EF was recognized that a simple mode fi lter MPD are insufficient to meet the tight developed to keep up with compo- was inadequate, and responded with a loss budgets for Gigabit Ethernet. nents used in high-speed networks, qualification template based on mode Within the international stan- e.g. 10/40/100-Gbit Ethernet. It was power distribution (MPD). MPD was dard ISO/IEC 61280-4-1 Fibre- not until high-speed transmission over the metric used to describe launch optic Communication Subsystem multimode fi ber became a reality that conditions within the International Test Procedures – Installed Cable 6 APRIL 2010 Cabling Installation & Maintenance www.cablinginstall.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  9. 9. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F a New g cin du Intro Fool-proof Termination Step 1 Step 2 Step 3 in Three Simple Steps... Insert Fiber Activate Tab Install Boot Now That’s Brilliance! Belden FiberExpress® Brilliance® Field-installable • There are no specialized tools Connectors make fiber terminations really fast, to purchase, making the transition simple and reliable. Brilliant in their design and to this new technology incredibly easy implementation, they are the only fiber optic For more on the FiberExpress Brilliance Con- connectors in the marketplace to offer reliable nectors, call 1.800.BELDEN.1 (1.800.235.3361). terminations in less than five seconds – with NO termination tools needed! In the U.S., FiberExpress Brilliance Connectors Save time, labor and money: are available from the following distributors: • Splice and crimp takes place in one easy step – reducing the number of termination steps by 50% • The connector can be re-terminated up to five times, virtually eliminating connector waste • The connector’s window enables 100% installation feedback, instantly, when using a Visual Fault Locator (VFL) © 2010, Belden Inc. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  10. 10. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: INSTALLATION :: Plant – Multimode Attenuation Measurement, four different compli- ance templates are used for 850-nm Reference and 1300-nm for both 50-μm and 62.5- test cord Fiber link μm cabling. Reference The figure on page 5 shows the tem- test cord plate for 850-nm, 50-μm EF. The circle 1 around the EF template at 22 μm repre- sents the area that most affects the loss measurements. This is the area, along 2 with the 20-μm control point, where mode control is most important. The ! Caution equation of light intensity ratios along Do not disconnect the with near field measurement equipment outputs on the source constructs or builds the EF response. ( and ). Smart remote Test Connections How EF solves the problem EF solves the problem by controlling Tester the number of mode groups launched Commercially available today, launch controllers like those shown here (items 1 from the test cord. Consistency in and 2 in the illustration) achieve encircled-flux compliance when coupled to any launching repeatable mode groups is light source. both an optical and geometric prob- lem and is related to the launch wave- field equipment and variability of wavelength to meet EF may, on occa- length, the initial launch condition fabrication process, may limit EF sion, cause the other wavelength to (i.e., overfi lled or OFL launch), the test compliance. exceed the EF template boundary. cord’s fi ber-core size, the fi ber numeri- Dual-wavelength field equip- Studies have shown that this is cal aperture, the external mandrel, and ment. For ease of use and increased mostly the case for 50-μm cabling at other fi ber properties. productivity, field test equipment is 1300 nm. The figure on page 9 illus- Because test cords are such an designed with a single optical port trates that both wavelengths cannot important part of EF compliance, sup- for both 850 and 1300 nm. The test be made to reach their respective tar- pliers and installers will have more- set is coupled with a test reference gets from a single port source. Because stringent requirements for providing cord wrapped around a single man- most high-speed networks are run at high-quality reference-grade cords. For drel, where the mandrel must provide 850 nm and 50 μm, they are the most multimode fi ber test cords, reference the desired launch condition for both relevant specifications for EF. grade requires less than 0.l-dB inser- wavelengths simultaneously. This Fabrication process and vari- tion loss. By creating a tight standards- setup may negate alignment of each ability. A cost-effective factory pro- based template to which all test- individual source to its respective EF cess for EF tuning, assembly, and test equipment suppliers must adhere, the target and may produce a compro- is required. One such process might problem of consistent loss measure- mised alignment for each wavelength. use a factory “standard” source when ments using an EF-compliant source Alignment typically is performed tuning test reference cords (TRCs) and will be mitigated. by tuning to one wavelength, then mandrels for EF compliance. When checking the other for compliance. this TRC/mandrel goes into the field it Limitations to compliance Using this approach with a single may not be perfectly interchangeable Two primary factors, dual-wavelength mandrel, alignment performed for one due to different physical variables that 8 APRIL 2010 Cabling Installation & Maintenance www.cablinginstall.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  11. 11. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: INSTALLATION :: contribute to uncertainty. Dual Wavelength LED 850nm & 1300nm at 50μm connectors clean. This implies that EF com- EF When reviewing sup- pliance can only be guar- 1300nm limits pliers’ test gear, consider 850nm limits anteed at the time of fac- how the specifications for tory fabrication. 850nm EF compliance are writ- hits target (center) Some factors that con- ten. Because compliance tribute to variation include is most closely related to the source wavelength operating high-speed net- 1300nm and the fi ber-core size. “off” target works that use VCSELs, As the fi ber size varies this is another reason why from 50 μm to 49 μm, for 0.9 the 850-nm and 50-μm example, the number of 20 Radius (μm) 22 specification is considered mode groups supported is the most important. As reduced from 19 to 18. Dual-wavelength light sources have a shortcoming in that the with many product specifi- 850- and 1300-nm wavelengths cannot both be made to reach To mitigate this issue, cations, footnotes are com- their respective targets from a single port source. it is recommended to use mon to explain the unique only the TRCs supplied by the test- required per the standards, and will conditions under which the specifica- equipment manufacturer. These test give the best test results. As always, tion will be met. Also, be aware that all cords were used during the devel- due to properties inherent in fi ber suppliers have similar constraints with opment of the test equipment, are optics, it is very important to keep their equipment. __________________ C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  12. 12. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: INSTALLATION :: Complying with EF to any light source are At this point, some Variation due to fiber core size commercially available. Number of mode groups vs. wavelength installers might be ask- Mode group and core radius 850nm at 50μm Encircled flux is a new ing themselves if they 19.2 multimode launch-condi- can continue using their 19 50μm supports tion metric that improves 19 mode groups existing equipment to 18.8 at 850nm link-loss consistency by conduct loss testing. 18.6 controlling the number of If an installer wants to 18.4 mode groups during the 18.2 49μm supports use a source that was fiber-testing process. The 18 mode groups 18 slightly overfi lled relative at 850nm current encircled flux 17.8 to the EF template tar- 0.825 0.83 0.835 0.84 0.845 0.85 0.855 0.86 0.865 0.87 0.875 launch conditions, using get, the loss readings will wavelength (μm) solutions such as launch be slightly pessimistic controllers, are a great A core-size difference of one micron, from 50 to 49, reduces the and one could have high number of modes supported from 19 to 18. improvement over previ- confidence in a passing ous standards. result. On the other hand, if an installer point of view, there may be an expec- had to test Gigabit Ethernet cabling tation that test instruments already in SEYMOUR GOLDSTEIN is principal where loss budgets are tight, the EF the field can be retrofitted for EF com- engineer at Fluke Networks’ media test standard becomes more relevant. pliance. External “launch controllers” business unit and manager of the com- From the end-user customer’s that are EF-compliant when coupled pany’s fiber-optic design center. _______________ 10 APRIL 2010 Cabling Installation & Maintenance www.cablinginstall.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  13. 13. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F BECAUSE YOUR BUSINESS RUNS THROUGH US Verified performance. Beyond the standards. Beyond our specifications. Beyond your expectations. For nearly two decades, our LANmark™ UTP cables have been leaders in the cabling industry. LANmark-10G2, LANmark-2000, LANmark-1000, and LANmark-350™ continue to be four of the highest performing UTP cables manufactured in the United States today. Through the ETL LANmark Verification Program, Intertek now provides you with independent third-party verification that LANmark Category 5e, 6, and 6a cables will perform to our specifications, not just to the standard. So you can be sure that you receive every dB of performance that you specify. Who else other than Berk-Tek will verify and guarantee that? No matter which LANmark UTP product you choose, all offer guaranteed performance that exceed industry standards, providing headroom to support evolving applications… for many years to come. For more information on verified performance of Berk-Tek’s premium LANmark UTP products, call 1-800-BERK-TEK or visit www.berktek.com. Search Term: ETL VERIFIED LANmark-10G2 LANmark-1000 LANmark-2000 LANmark-350 www.berktek.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  14. 14. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F NEW STYLE! MOUNTING BRACKETS Just for CLASS 2 LOW VOLTAGE WIRING “Wings” Arlington’s non-metallic mounting brackets offer flip up, hold secure the best way to install class 2 wiring – and seat when mounting wall plates flush with the mounting surface. ! screws are tightened We now offer a single-gang, NEW low profile mounting bracket...LV1LP. Low profile single-gang Recessed It makes quick work of LV1LP Screw Hole installations using 1/2" and or 5/8" drywall installed Thin on cast concrete or Front Lip concrete block walls seat wall plate 2 with furring strips. flush with wall surface In multiple sizes, for existing construction, our low-voltage non-metallic mounting brackets... • Adjust to fit 1/4" to 1" drywall, wallboard or paneling Oval Hole • Install faster – cost less than metal 1 3 4 allows final shifting, ©REV03/2010 Arlington Industries, Inc. straightening of device Single-gang 2-gang 3-gang LV1 4-gang LV3 LV4 Arlington 800/233-4717 • www.arlingtonlowvoltage.com Patented. Other patents pending ™ STEEL TV BOX CSA w/ grounding lug only FOR USE WITH METAL RACEWAY Arlington’s recessed combination power and low voltage 4-gang TV BOX™ offers the secure, convenient and easy way to mount LCD or plasma TVs flush against a wall.The job looks great NEW because plugs and connectors stay inside this box without extending past the wall. For new or old work using metal raceways, TVBS613 offers power and low voltage in EASY TO INSTALL one side, or with the supplied separator, RECESSED BOX power in one side; low voltage in the other. TVBS613 Two additional built-in mounts allow for 4-gang even more low voltage data/media connections. © 2008 Arlington Industries, Inc. For Existing Construction... or New Work TVBS613 Arlington 800/233-4717 • www.arlnew.com/tvbs613 Patent pending C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  15. 15. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: WIRELESS :: Using cabling systems to support in-building personal wireless accommodate different users (indoor) communicating differently (data). As The wires behind wireless connectivity are a result, buildings can be significant enabling dead-zone-free facilities. dead zones for wireless users unless those buildings contain wireless com- BY PATRICK McLAUGHLIN munications systems—entirely sepa- rate systems from 802.11-based wire- It used to be that consumers readily being able to stay connected when less local area networks. accepted cellular voice service would they were in an automobile or on the The changing characteristics of be far less reliable than wired voice. move.” That prompted the deployment wireless use has forced service pro- How commonly would you be on one of wireless antennas in tunnels and viders to change how they build their end or the other of the following type other places where mobile calls fre- systems. “There has been a shift of conversation in which at least one quently would be dropped. in operators’ building out their net- party was on a wireless phone? “I’m works as they go from 2G to 3G and going into a tunnel; I’m going to lose Changing landscape 4G,” says Spindler. “These shifts are you. I’ll call you back.” Even today, it is Today the landscape has shifted even making for smaller cells, with more common to see wireless users inside a beyond that. With wireless being the emphasis on covering areas of high building receive a call and head to the preferred medium for personal com- user density such as airports, conven- nearest exit not out of courtesy to those munications, access within a build- tion centers, and college campuses. around them, but to get to either a win- ing is just as important as access while That all places demands on in-build- dow or outside where the signal will be mobile. “The shift is to portability,” ing coverage. Large buildings can strong and the transmission clear. Spindler says, as today’s wireless users have a significant impact on overall That is changing as wireless users are often sitting in a conference room network performance.” raise their expectations of connec- or in an office reception area waiting tivity anywhere and service provid- for a meeting to begin. A majority of Wiring for wireless ers work to oblige. At the same time, mobile traffic comes from inside, not Many enterprise users have seen the “mobile devices are becoming the pre- outside buildings, yet cellular networks benefits of installing in-building solu- ferred means of communications in were originally designed to accommo- tions in their facilities and have done the world,” says John Spindler, vice date outdoor rather than indoor users. just that. ADC offers the InterReach president of product management with Add to this the shift from voice to suite of distributed antenna systems ADC (www.adc.com). For many users data traversing wireless networks and (DAS) for in-building wireless cov- the mobile phone rings far more often it is evident that cellular networks erage. InterReach Unison is often than the desk phone. Spindler further were by and large built to accom- deployed in dense, high-traffic envi- explains, “Think about the initial roll- modate a certain type of user (out- ronments such as convention cen- out of cellular. It was all about cover- door) communicating in a certain way ters, sporting venues, and airports. ing major highways—mobility, people (voice), and today are being required to InterReach Fusion is a multi-band www.cablinginstall.com Cabling Installation & Maintenance APRIL 2010 13 C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  16. 16. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: WIRELESS :: system often used for in-building wire- wireless infrastructure is implemented technologies while Wired for Wireless less connectivity in campus envi- in enterprise buildings,” Kurk contin- is a passive DAS technology. Active ronments and for areas greater than ues. “Instead of waiting to fi nd cover- and passive DAS can be compared to 250,000 square feet. age trouble areas, CommScope’s cost- “fat” and “thin” wireless access points, In March CommScope (www.com- _______ effective platform for uniform coverage in that antennas in active DAS include _________ introduced its Wired for mscope.com) provides building owners with a low- active electronics while antennas in Wireless Solution, aimed at owners cost solution before the high-cost prob- passive DAS do not. and developers of new buildings and lem presents itself. This capability not The decision to implement an active campuses. The system allows them only allows people to stay connected or a passive DAS, like many networking to provide, in advance, the infrastruc- and achieve more in their day-to-day decisions, will be influenced by a multi- ture necessary to eliminate weak or lives, but long-term it can help enter- tude of factors specific to the user site. blocked signal areas from the outset prises reduce infrastructure costs by and prepare them for better wireless embracing in-building wireless sys- Who pays? coverage over the structure’s lifetime, tems for their communications needs.” Both ADC and CommScope mentioned CommScope says. a recent business-model trend that has “Our Wired for Wireless Solution Multiple technologies the enterprise, rather than the wire- provides a necessary foundation to There are differences between less carrier(s), bearing the cost of an ensure exceptional wireless cover- CommScope’s Wired for Wireless and in-building wireless system installa- age throughout the building’s life- ADC’s InterReach systems. One sig- tion. In a frequently-asked-questions cycle,” says Morgan Kurk, senior vice nificant difference is the cabling types document CommScope issued when president of intelligent buildings with used to support the systems’ wireless it announced Wired for Wireless, the CommScope Enterprise Solutions. antennas. Wired for Wireless includes company said, “Faced with rising “The employees, suppliers, custom- two, half-inch 50-ohm coaxial cables infrastructure costs throughout their ers, and general visitors that occupy from the Andrew Heliax cable family network, carriers may be unwilling or these buildings and campuses rely as well as N-type male coaxial connec- slow to deploy active equipment for in- on dependable connectivity in all tors. The cables are part of a complete building wireless coverage if they also aspects of their business and personal system that also includes two antenna need to deploy cables and antennas. lives,” he continues. “A smartphone types—directional and omnidirec- Additionally, the Wired for Wireless is becoming just as indispensable tional—as well as coaxial connectors provides the enterprise with options to for business operations as electricity and cable-management apparatus. support carrier-owned and/or enter- and plumbing are for the building. We ADC’s InterReach systems can use prise-owned equipment as applicable.” believe the Wired for Wireless Solution twisted-pair, multimode fi ber-optic, ADC’s Spindler explains that over is the most sensible way to better pre- and/or RG-6, RG-59, and RG-11 coax- the last few years enterprise users pare a building or campus for its wire- ial cables. ADC emphasizes that these have been more willing to pay for the less needs, today and tomorrow.” cable types are frequently found inside system, at least in part because in that When introducing the system, buildings and that its InterReach sys- situation the enterprise does not have CommScope pointed out that energy- tems can leverage existing cabling to make a long-term commitment to saving features such as heavily insu- runs when they are available. any particular carrier. lated walls and windows that reduce Each company has made position- CommScope also produced a white energy costs in new buildings can ing statements pointing out the ben- paper that makes the case for its also make it difficult to receive outside efits of their respective systems and Wired for Wireless Solution and also wireless signals. the cabling infrastructures within discusses some practical measures “The Wired for Wireless Solution is them. The differences exist because for installing the system. It reads in a much-needed evolution to the way InterReach systems are active DAS part, “To ensure uniform coverage, 14 APRIL 2010 Cabling Installation & Maintenance www.cablinginstall.com C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  17. 17. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F :: WIRELESS :: the indoor antennas must be evenly spaced throughout the building, with no perimeter antenna further than 20 feet from an outer wall. The outer ring of antennas can be directional, Premise Wiring although omnidirectional antennas CAT 6 • CAT 6a • CAT 7a will also work, pointing back into the Modular Plugs & Jacks building, almost as if the building is being covered by a blanket of invisible signals. In this way, the signals from the indoor antennas will swamp out the signals from the outside environ- ment, forcing all devices in the build- ing to gain network access through the building’s system, thus making their experience uniform and controllable.” CommScope also recommends spreading antennas evenly throughout the building in a grid pattern that is much the same as that used for 802.11- based systems. The company says the ideal is to place antennas at 100- foot intervals. The paper goes into fur- ther detail with recommendations for antenna placement in specific areas of buildings including elevator cores and stairwells. Regardless of the differences between ADC’s InterReach and Stewart Connector understands that specifying and sourcing quality CommScope’s Wired for Wireless modular connectors for premise and campuswide communications systems, they both aim to fulfi ll the systems can be a tough job. Especially as technology, standards, emerging and growing needs of enter- and products continue to evolve. That is why we’ve engineered our plugs and jacks to ensure your networks’ superior performance... prise end-user organizations to support today and tomorrow. wireless personal communications as a business necessity. PLUGS-CAT 3 to 7a JACKS-CAT 3 to 7a Editor’s note: Quotes and informa- • Shielded and Unshielded • Shielded and Unshielded tion from John Spindler used in this • For Solid & Stranded Cable • Horizontal, Vertical, and Angled • Polished Contacts for High Mounting Options article came from our webcast seminar Insertion Life • Single and Multi-Port Designs entitled “Enterprise wireless – LANs, • Multiple Keying and Wire • PCB and Cable Mounted Designs Management Options voice, and cabling.” PATRICK MCLAUGHLIN is chief Stewart Connector editor of Cabling Installation & Maintenance. www.stewartconnector.com • 717/235-7512 www.cablinginstall.com Cabling Installation & Maintenance APRIL 2010 15 C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F
  18. 18. C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F Our BIM models make building system design a snap… with a click of your mouse. You can’t to Cooper the sun. leading-edge design tools for communications Look control B-Line for But you can control installation costs. support systems and enclosures. The use of building information management (BIM) software continues to increase, offering key benefits to all parties in commercial construction — from the architect to the owner. To help you take advantage of BIM, Cooper B-Line offers a complete library of BIM models for our voice/data/video support system and enclosure solutions (in the Autodesk Revit® family file format). For visualization, spatial coordination, customer engagement and more, our BIM models and other specification tools can make your job a snap, with just a click: www.cooperbline.com/engineer. www.cooperbline.com/engineer C Previous Page | Contents | Zoom in | Zoom out | Refer a Friend A Installation 7Maintenance | Search Issue | Next Page BMaGS E F

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