Enterasys Networks Outdoor Antenna manuale d’uso

Outdoor Antenna Site P reparation and Installation Guide P/N 9033348-05 ENJ O Y THE FREEDOM OF WIRELESS NETWORKING ENTERASYS.COM ™[...]

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NOTICE Enterasys Network s reserves the righ t to ma ke changes in sp eci fications and other informati on contained in th i s document a nd its web site wi thout pri or notic e. The reade r should in all cases c onsult En terasys Networ ks to determin e whet her a ny s uch c han ges h ave b een made . The hardwa re, firmware, o r software de scrib[...]

Notice ii Regulatory Informati on Canada The produc ts included with the RoamAbou t Outdoor Kit for o utdoor a ntenna install ation s comply with GL-3 6 of Industr y and Scie n ce Canada. FCC Notice Note: The devices included with the outd oor kit h ave been te sted and found to c omply with the limits fo r a Class B dig ital device , pursua nt to [...]

iii Notice When connecti ng RoamAbo ut devices to eq uipment ot h er than the Ent erasys Network s RoamAb out prod uct s describe d in this guide, the antenna inst a llation may n o long er comply with the regulatio ns as de fined abo ve. In this case, it is the respo nsibility of the user to ensure tha t the entire antenn a installatio n compli es[...]

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v Contents Preface Intended Aud ience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Associated Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Getting Help . . . . . . . . . . . . . . . . . . . . . . .[...]

Contents vi 3 Antenna Installation Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Verify Compo nent Connector Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Grounding System . . . . . . . . . . . . . . . . . . . .[...]

vii Preface This guide describes the requiremen ts that ar e needed for the succes sful in stallation of the RoamAbout outdoor an tennas used in a R oamAbout wireless network. A Ro amAbout wireles s network consists of RoamAbout wirele ss produ cts, su ch as the RoamA bout PC Card, RoamAbou t Access Point, RoamAbout R 2 Wireless Access Platform, an[...]

viii Associ ated D ocume nts The documentation, drivers, and utilities can als o be down loaded fro m the Ro am Ab out Wireless web site. Check the Ro amAbout Wireless w eb site regu l arly fo r produ ct upgrades. http://www.enterasys.com/wi reless Component Information Location RoamAbout Access Point 2000 RoamAbout Access Point 2000 Har dwar e Ins[...]

ix Getting Help For additional support related to this d e v ice or document, contact Enterasys Networks using on e of the fo llowing meth ods: Before calling En terasys Networks, pleas e have the following information ready: • Your Enterasys Networks service contract nu mber • A des cript ion of th e probl em • A description o f any action(s[...]

x Document Conve ntio ns The following icons are used in this document: Icon Meaning ELECT R ICAL H AZARD : W ar ns aga ins t an ac t i on th at could r esult in pers onal i njury or death. WA R N I N G : W arns against an acti on that could r esult i n pers onal inj ury or d eath. CAUTIO N: Contains info rmation essentia l to avoid damage t o the [...]

1-1 Chapter 1 Site Preparation This chapter describes the site requiremen ts th at are needed for the successful inst allation of the RoamAbout outdoor antenn as. It is inte nded for sales engineers or site evaluators. If after reviewing this document you require additional technical information or support prior to ordering product, cont act your a[...]

Choosing a Wireles s Network Co nfiguration 1-2 Choo sing a Wireless Network Co nfig ur ation The antenn as you need depend on the wirel ess networ k configuration: • LAN-to-LAN, Point-to-P oint This is a wireless link between two AP s th at connects two separate wired LANs. Typically, t wo directi onal ante nnas are used. • LAN-to-LAN, Point-t[...]

1-3 Determin ing th e Antenna L ocations Typicall y, the RoamA bout directi onal and omni-direct ional ant ennas are i nstalled on rooftops. The directional antenna can also be installed to the side of a buildin g. The vehicle-mou nt antenna is mount ed to a vehi cle and connected to the client with a 2.5 m eter (8 foot) cab le. The following secti[...]

Det ermi ning th e Ant enna Locati ons 1-4 Table 1- 2: Distanc es and Lin e of Sig ht Clearance ETSI 1 The Ya gi antenn a m u st be co nnecte d to a n A P con figured w it h th e Hi-Ga in m at c hed Roa m A bou t PC Card. RoamAbout PC Card Variations There are two var iations of the RoamAbou t PC Card: standar d and Hi-Gain matched. The Hi-Gai n m [...]

1-5 Determin ing th e Antenna L ocations Line of Sight The shape of the radio beam, defined as the Fresnel Zone, is widest in the middle. The Fresnel Zone is shown as the gray area between the anten nas in Figure 1- 1 . The exact shape and width of the Fresnel Zone is determin ed by the distance b etween the antenna and frequenc y of the radi o sig[...]

Det ermi ning th e Ant enna Locati ons 1-6 Figure 1-2: Potential Obstacles to Line of Sight (not to scale) Power lines blocking line of sight Building blocking line of sight T rees blocking line of sight 100_02[...]

1-7 Determin ing th e Antenna L ocations Other Factors That Can Reduce Ant enna Range Large reflecting s urfaces that are parallel or p artly perpendicular to the radio signal ca use reflections of the radio signal (see Fig ure 1- 3 ). Examples of reflecting s urfaces are buildings with low-emis sivity (low-e) glass, crowded parki ng lot s, water, [...]

Det ermi ning th e Ant enna Locati ons 1-8 Other Requirements The following describes othe r requ irements to meet before inst alling the RoamAbout outdoor an t ennas. • Lightning Protection A lightning rod must be p laced close to the anten na mast or wall brack et. This is required to protect the antenna fro m direct ligh tning strike s. • Gr[...]

1-9 Antenna Options Antenna Opt ions The follo wing sections describe the RoamAbo ut outdoo r antennas. A ppendix A contains the specifications for each antenna. RoamAbout 5 dBi Vehicle-Mount Antenna The RoamAbout veh icle-mount antenna ( Fig ure 1- 4 ) is a broadband antenna for the 2 .4 GHz frequen cy band featuring an omni-directional pat tern w[...]

Antenna O ptions 1-10 RoamAbout 14 dBi Directional Antenna The directional antenna is a totally enclosed 16-element Yag i designed for point-to-p oint communications . The antenna is normally moun te d on a mast and vertically polarized. The following sections s how the compon ents and part n umbers in the RoamAb out directional antenna kit. Access[...]

1-11 Antenna Options Figure 1-5: Yagi Antenna Configurat ion Ex ample (AP 2000) Low-Loss Cable (2) Lightning Protector (6) Pigtail Connection (3) w w w . c a b l e t r o n . c o m / w i r e l e s s T o Power Outlet Insert Ethernet Cable from Network Remote Power Adapter PC Card (5) Antenna Cable Antenna (1) Access Point (4) Earth Ground (Outdoors) [...]

Antenna O ptions 1-12 RoamAbout R2 Ta b l e 1 - 4 lists the packaged kit comp onents. The numbe rs in the first co lumn corresp ond to the number s in Figure 1 -6 , which shows an example of a RoamAbout R2 cabling configurat ion. Table 1-4: RoamAbout R2 Directional Antenna Component Part Numbers *Europe an T e leco mmuni cations Stand ard s Insti t[...]

1-13 Antenna Options Figure 1-6: Yagi Antenna Configuration Examp le (RoamAbout R2) Remote P ower Adapter Insert Ether net Cable F rom Network INDOOR OUTDOOR To P o w e r Outlet Pigtail Connection (3) Lightning Protector (6) Low-Loss Cable (2) Antenna Cable Antenna (1) Located Behind PC Card Slot 2 PC Card Slot 1 (5) RoamAbout R2 (4) PC Card Slot 2[...]

Antenna O ptions 1-14 RoamAbout 7 dBi Omni-Directional Antenna The RoamAbou t omni-directional antenna is a broadband an tenna for the 2.4 G Hz frequency b and featuring an omn i-direction al pattern w ith a no minal gain of 7 dBi . This antenna is encap sulated in a weatherpr oof protective cov ering. With the hardware provided, this vertically-po[...]

1-15 Antenna Options Figure 1-7: Omni-Directional Antenna Configuration Example (Access P oint 200 0) T o Power Outlet Insert Ethernet Cable from Network Remote Power Adapter PC Card (5) Access Point (4) Low-Loss Cable (2) Lightning Protector (6) Pigtail Connection (3) INDOOR OUTDOOR Antenna (1) Mounting P ole or Mast Ground Ground Earth Ground (Ou[...]

Antenna O ptions 1-16 RoamAbout R2 Ta b l e 1 - 6 lists the antenna and related compo nents with their part numb ers. The numb ers in the first column correspond to the numbers in Figur e 1- 8 , which shows an example of a RoamAbout R2 cabling co nfiguration. Table 1-6: RoamAbout R2 Component Omni-Directional Part Numbers * European T elecomm unica[...]

1-17 Antenna Options Figure 1-8: Omni-Directional Antenna Configuration Example (RoamAbout R2) Remote P ower Adapter Insert Ether net Cable F rom Network INDOOR OUTDOOR T o Pow er Outlet Pigtail Connection (3) Lightning Protector (6) Low-Loss Cable (2) Mounting P ole or Mast Antenna (1) Located Behind PC Card Slot 2 PC Card Slot 1 (5) RoamAbout R2 [...]

Contactin g an An tenna Inst allation Company 1-18 Contact i ng an Ante nna Inst allation C ompa ny Have an antenn a installation pr ofessional inst all the outdoor antenn as. The antenna installer provides the expertise to pr oper ly install, secure, and ground your antenna. Th e following describes tasks th at the installer may need to perf orm. [...]

1-19 Contactin g an An tenna Insta llation Company Insta llation Requirement s √ Determine the best location for the AP. √ Determine the length of cable required from the antenna to the AP. √ Ensure the lo cation has an accessible Ethernet connection. √ Determine the d istance between buildings . You may need to p rovide the follo wing dist[...]

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Over view of Co nnect ing Cabl es to the Ac cess Poin t 2-2 Overvi ew of Co nn ecting Cable s to the Ac cess Poi nt Before cabling the Access Point 2000, y ou shoul d install the Access Po int to a wall or ceiling. For detailed hardware installat ion procedures, see the RoamAbout Access Point 2000 Har dwa re Ins t all at i on Gui de . Figure 2-1 pr[...]

2-3 Overvi ew of Co nnecting Cables to the Acce ss Poin t 2. Remove the p lastic cap from the PC Card and connect the pigtail cable. After the Lightning Protector has been installed and grounded, connect th e other end of the pigta il ca ble t o the L igh tning Prot ector . 3. If using the remote p ower option , connect the Ethernet cable fro m the[...]

Over view of Conne cti ng Cab les to t he Ro amAbout R 2 2-4 Overvi ew of Conn ecti ng Cable s t o the Ro amA bout R2 Before cabling the Roam About R2, you should install the RoamAbou t R2 to a wall or ceiling. For detailed hardware installat ion procedures, see the RoamAbout R2 Wireless Access Platfor m Hardwa re Insta llation Gui de . Figure 2-2 [...]

2-5 Overvi ew of Conne cti ng Cables to the RoamAb out R2 2. Remove the p lastic cap from the PC Card (s) and connect the p igtail cable. After the Lightning Protector has been installed and grounded, connect th e other end of the pigta il ca ble t o the L igh tning Prot ector . 3. Connect the Ether net cable from the Ro amAbout R2 to the RoamAbout[...]

Overvie w of the AP Config urati on 2-6 Overvi ew o f the AP Config uratio n The following pr ovides an overview o f co nfiguring the AP with the Roam About AP Manager. For detailed p rocedures, see the Ro amAbo ut 802.1 1 Wirel ess Ne tworking Guide or click the Help button in the AP Manager. Before you begin, y ou need the follo wing: • A valid[...]

2-7 Overview of the AP Configura tion Figure 2-3: RoamAbout AP Manager[...]

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3-1 Chapter 3 Antenna Insta llation This chapter provides the inform atio n necessa ry for a pro fessional antenn a installer to install the RoamAb out antennas. The RoamAbou t ou tdoor ant enna kit s do NOT provi de the fo llowin g items , which may be necessary to install the antenna: • Mast or other antenn a support structur e • Guy wires ?[...]

Installa tion Ove rview 3-2 Instal lation Over vie w The installation process is sum marized in the following steps. The following section s in this chapter provide add itional details. 1. Make sure the APs are mounted and configured as specified in Chapter 2 . 2. Check the cable co nnectors to verify th at they are the correct p o larity for your [...]

3-3 Verify Co mponent Con nector Pol arity Figure 3-1: Selecting the Correct N-Type Conne ct or for the Access Point 2000 The term Male or Female does not refer to the connector thread, but to its center pin. If you p urchase in dividual components, m ake sure you specify the correct N-Typ e connecto rs to match the configu ration th at applies t o[...]

Verify Com ponent Connector Po larity 3-4 Figure 3-2: Selecting the Correct N-Type Connect or fo r the RoamAbout R2 The term Male or Female does not refer to the connector thread, but to its center pin. If you p urchase in dividual components, m ake sure you specify the correct N-Typ e connecto rs to match the configu ration th at applies t o your [...]

3-5 Groun ding Syste m Grounding Syste m Direct earth groun ding of the antenn a and the Lightning Protector is necessary to p rotect the installation from lightn ing and th e build - up of stat ic electricity. The grounding system must satisfy the following requirements: • The antenna mast , RoamAbout AP, and RoamAbou t Lightning Protector mu st[...]

Lightning Protec tor Install ation 3-6 Lightnin g Protec tor Installat ion Lightning protect ion is des igned t o protect people, p ropert y and eq uipment by provi ding a path to t he ground whenever ligh tning stri kes your antenna installation. The Ro amAbout Lightning Protector is an indis pensable part of such a groundi ng system to protect yo[...]

3-7 Li gh tning Pr otec tor Inst all ation To install the RoamAbout Lightni ng Pr otect or, perform th e follo win g steps: 1. Determine a suitable locatio n for the Lightning Protector as describe d in Chapter 2 . 2. As sh own in Figur e 3-3 , secure bracket (A) to th e wall using two screws (F). 3. Us e a ri ng -te rmi na l to c onne ct gr o und [...]

Mounting t he Antenna 3-8 Moun ting th e Antenna This section includes requirements and m ounting guidelines fo r the RoamAbout outdo or antennas. Requirements for the Directional a nd 7 dBi Omni-Directional Antennas To minimize the influen ce of obstacles, sign al interf erence or reflections , install the antenna at least 2 meters (6 f eet) away [...]

3-9 Mounting the An tenna Antenna Polarization With Ro amAbout outd oor antenna produ cts, it d oes not mat ter what typ e of polar i zation you choose, as lon g as the antenna at one en d of the communications lin k is mounted in the same plane as the an tenna at the other end. Radio waves emitting from a Yagi directional antenna are linear, leavi[...]

Mounting t he Antenna 3-10 Mounting the Directional Antenna You can mount the RoamAb out 14 d Bi d ir ectio na l antenna on a mas t or a flat ver tical surface such as a wall. I n most cases, mounting the antenna on a mast allows mo re flexibility in adjusting the height and direction of the antenna in order to better aim it at the opposite end of [...]

3-11 Mounting the An tenna Figur e 3-4: Mou nting th e 14 dBi Antenn a to a Ma st Figur e 3-5: Mount ing the 14 dBi Antenna to a W all Side View T op View Clamp Backing Plate Antenna Mounting Base Flatwasher Always place flatwashers between nuts and the Antenna Mounting Base. Direction of Maximum Signal Backing Plate Antenna Mounting Base Flatwashe[...]

Mounting t he Antenna 3-12 Mounting the Omni-Directional Antenna The RoamAbou t 7 dBi omni-direct ional antenn a k it includes a me tal backing plate, two hose clamps, and a nut and lockwasher . Refer to Figu re 3-6 and perform the following: 1. Inser t the threaded portion of the ante nna mountin g base (A) t hrough the t op of the mountin g brack[...]

3-13 Mounting the An tenna Figure 3-6: Moun ting the Omni - Directional Antenna t o a Ma st D C B J G A H E F I H[...]

Mounting t he Antenna 3-14 Mounting the Vehicle-Mount Antenna The vehicle-mou nt antenna is typically connected to a client in a wireless infrastructure network. The an tenna is mounted to a moving veh icle, such as a fo rk-lift. 1. Drill a hole in the top of the vehicle so that the anten na connector (at the bottom of th e antenna as shown in Figu[...]

3-15 Connecti ng the Ante nna Cables Connect i ng the Ant enna Cables To connect your R oamAbout AP to an ou tdoor antenna installation, y ou need the following component s pictured on the righ t side of this p age: A = RoamAbout Pigtail Connectio n (50 cm) B = RoamAbout Li ghtning Protector C = Low-Loss Antenna Cable D = Outdoo r Antenna Cab le Th[...]

Connectin g the Anten na Cables 3-16 Connecting the Cables Once the antenna is pro perly installed, yo u can connect the an tenna to the R oamAbout AP via the RoamAbo ut Lightning Protector. 1. Verify that the low-loss antenn a cable is properly connected to the anten n a cable. 2. Secure the low-loss cable to the mast su ch that the cable connecto[...]

3-17 Optim izing RoamA bout Outd oor Anten na Placemen t Optimizing RoamAbo ut O utdoor Antenn a Place ment If an AP is connected to an outdoor dir ectional an t enna, the anten na must be po inted directly at the antenna for the other AP. A mi saligned antenna can decrease the signal level or prevent co mmunications. Alignin g an omn i-dir ectiona[...]

Routine Maintena nce 3-18 Routine Maint enance Routine maintenan ce is required for each Ro amAbout Ligh tning Protector in you r outdoor antenna installation. Maintenance involv es replacing the Gas Discharge Tu be (GDT) at some interval depending on the lightning/transient d ischarge activity in your area. NOTE: Contact a local antenna installa t[...]

A-1 Append ix A Spe cifica tio ns This appendi x lists the specificat ions of the various Roam About outdoor antenna products . RoamAbout 14 dBi Directional Ant enna The directional antenna is a totally enclosed 16-element Yag i designed for point-to-p oint communications . The antenna is norm ally mounted on a mast an d vertically polari zed. Tabl[...]

RoamAb out 14 dBi Direction al Ant enna A-2 Electrical • Frequen cy Ra nge 2 .4 GHz • VSW R Less than 2:1, 1. 5:1 No mi na l • Nom inal Impe dance 50 Oh ms • Gain 14 dBi • Front-to-Back Ratio greater t ha n 20 dB • Half -Pow er Beamw idth (-3dB) • V ertical (E-plane °) 30.8 D egree s • Horizont al (H-plane °) 31.4 D egree s • Po[...]

A-3 Roam About 7 dB i Omni- Direct ional An tenna RoamAb out 7 dBi Om ni-Direc tiona l Antenn a The RoamAbou t omni-directional antenna is a broadband an tenna for the 2.4 G Hz frequency b and featuring an omn i-direction al pattern w ith a no minal gain of 7 dBi . This antenna is encap sulated in a weatherpr oof protective cov ering. With the hard[...]

Vehicl e-Mount A ntenna A-4 Vehicle-Mount Antenna The RoamAbout veh icle-mount antenna can be mounted on vehicl es, such as fork-li ft trucks, that n eed continuous access to networ ked data whether inside or outs ide of the building. The following table provides the sp ecifications for the ve hicl e-mount an tenna. Table A-3: Vehicle-Mount Antenna[...]

A-5 RoamAb out Pigtai l Connec tion RoamAbout Pigt ail Connection The RoamAbout Pigtail Connection is a propri etary cable used to con nect the RoamAbout PC Card to a RoamAbout o utdoor antenna system. One end of the cable has a proprietary connector which is connected to the RoamAbout PC Card. The N-Type connec tor at the opposite e nd of the cabl[...]

Low-Los s Antenna Cable A-6 Low-Los s Antenna Cable The RoamAbout low-loss cab le is av ailable in the following standard length s: • 15 meters (5 0 feet) - see Tab le A-5 • 22 meters (7 5 feet) - see Tab le A-6 To ensure you order t he right cable leng th, carefully determine th e distance between the locations where you i ntend to mou nt the [...]

A-7 Low-Loss Antenna Ca ble Table A-6: Cable Specifications for the 22 Meter (75 Foot) Antenna Mechanical Specifications • Length 22 met e r (75 ft) • Diameter 10 mm (0.4 in.) • We i g h t 101.2 gra m/meter (0.068 l bs/ft) • Bend Radius 25 mm (1 in .) Connector T ype (Access Point 2000) • FCC Countries Reverse Polarity-N (Female on both e[...]

RoamAb out Lightn ing Prot ector A-8 RoamAb out Lightnin g Protec tor The RoamAbout Lightning Protector is a su r ge arr esto r that protects your sensitive RoamAbout equipmen t from high-voltage cur ren ts caused by d ischarge and tran sients at the antennas. Table A-7 lists the specifications fo r the RoamAbout Lig htning Protector. Table A-7: Li[...]