Fsn 150 Manual

Fsn 150 Manual

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It offers numerous custom controls, mappable buttons and quick preset effect activation, including cuts, wipes, transitions, DVE moves, downstream keys and many types of effects you can create yourself.Steel Ball Valves KITZ. A320 321 Flight Crew Training Manual. 2 FSN 1400 Orientation Barco Home Security System. FSN Medical Monitor 24V Power Supply BPM150S24F10.GKS 150 Serra circular manual Bosch Professional. Bosch FSN 1600 Coolblue Voor 23 59u morgen in huis. Aroma Housewares 20 Cup Cooked 10. BARCO FSN 150 SPECIFICATIONS Pdf Download. FSN FS L190 D USER MANUAL Pdf Download. G3 FSN 150 0 150W radio broadcast station FM transmitter. FSN70 618EN FSN. Barco R9004623 FSN 150 Controller R9004623 B H. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Fsn Manual. To get started finding Fsn Manual, you are right to find our website which has a comprehensive collection of manuals listed. Our library is the biggest of these that have literally hundreds of thousands of different products represented. I get my most wanted eBook Many thanks If there is a survey it only takes 5 minutes, try any survey which works for you. InterReach Fusion FSN-908019-2 No p art of this doc ument may be reproduced or transmitted in any form or by any means, electr onic or mechanical, for any purp ose, withou t the exp ress written permission o f LGC Wirele ss. LGC Wireless reser ves the right to make changes, without notice, to th e s pecificat ions and materials conta ined herein, and shall not be responsib le for any damages caused by reliance on the material as presented, including, but not limited to, typographical and listing errors. Please addr ess your c omments to LGC Wirel ess, Inc. Prin ted in USA. All rights reserved. All othe r tradema rks belong to their respe ctive owners. Not with stan ding the for ego ing, Se ller sh all have th e op tio n to re pair any defe ctiv e Goods at Purcha ser’ s facil ity.

The origi nal warranty period for any Goods tha t have been r epai red or replac ed by selle r will not the reb y be ext ended. In additio n, all sales will be subj ect t o stand ard term s a nd c ond itio ns o n th e sales co ntra ct. Licen sed O pera tors LGC Wireless’ equip ment is de signed to operate in the licen sed fr equency bands of mobile, cellular, and PCS o perators. In the USA, the EU, and m ost countr ies this equi pment may only b e used by the licensee, h is aut horized agents or those with written authorization t o do so. Sim ilarly, u nauthoriz ed use is il legal, an d subje cts the owner to the cor responding legal sanctions o f the na tional jurisdic tion invo lved. Owners hip of LGC Wireless e quipment carries n o automa tic right of u se. This sect ion includes connector an d LED d escriptions, and unit sp ecifications. Convention Description bold Used for emphasis BOLD CAPS Labels on equipment S MALL C APS Software menu and window selections. N O T E: This f ormat emph asizes text wi th special significanc e or impor- tance, and provides s upplemental in formatio n. C A U T I O N: This form at indicates when a g iven action or omitted action can cau se or con tribute to a hazardous c ondition. Dam age to the equipm ent can occu r. WAR N I N G: T his format in dicates w hen a given a ction or o mitted action can result in catastrophic dama ge to the equipment or cause injury to the user.I t provides hig h-quality, ubiq uitous, s eamless acce ss to the wireles s network in smaller buildings. Fusion pro vides RF ch aracteristics d esigned f or large public and p rivate faciliti es such as campus environ ments, airports, s hopping malls, subwa ys, co nventi on cen ters, sports venues, and so on. The maximu m configu ration of a system is on e Main Hub, four Expans ion Hubs, and 32 RAU s (1-4-32 ). Multiple sy stems can be combined to provide larger conf igurations.

Complete alarmin g, down to t he field repla ceable unit ( that is, Fu sion Main Hub, Expans ion Hub, an d Remote Access Unit) and th e cabling infrastructure, is available. All events occurring in a system, defined as a Fusion Main Hub and all o f its associ- ated Ex pansion Hub s and Rem ote Access U nits, are automatically reported to the Main Hub. When a M ain or Exp ansion Hub d etects a ch ange in statu s, it reports a fault or w arn- ing alar m. Faults are al so indicated locally b y red status L EDs. Passive ante nnas connecte d to the RAUs are not moni- tored automatically. Perform a System T e st to retrieve status information about anten- nas. Using Ad minBrowse r, yo u can install a new sy stem or new componen ts, change sys- tem param eters, and que ry system status. Figu re 2-3 illus trates how th e system reports its status to Ad minBrows er. Fusio n Ma in Hu b Fusion Main Hub S tandard Browser Use Admi nBrowser to configure or monitor a local or a remote Fusion system. This is des cribed in S ection 7.7.1 o n page 7- 50. Each RA U passe s its status to the Hub. If a fa ult is de tecte d, the ALARM LED is red. If no fault is detected, the LED is green. The Ex pansion Hub quer ies the status of eac h RAU and compares it to the previ ously stored s tatus. If a fa ult is de tected, LEDs on the front panel t urn red. Fusion Main Hub Admin Brow ser RAU RAU Use a standard brow ser to commun i- cate with re motely or locally installed Fusio n syste ms runn ing Admin Brow ser. If a fa ult or warnin g cond ition is r epor ted, the A dminB rowser grap hical use r int er- face indicates the prob- lem on your standard PC bro wser. If a fa ult is de tecte d, LEDs on t he front panel turn red. Admin Brow ser Th e system requ ires only on e pair of fibers for eight antenn a points. Thi s makes any system exp ansion, s uch as adding an extra anten na for addit ional covera ge, potent ially as easy as pulling an extra CA TV cable.

Figur e 2-4 Fusion’s Double S tar Architecture Main Hub RS-232 PORT 1 PORT 2 PORT 3 PORT 4 Expansion Hub Expansion Hu b Fiber Expansion Hub Expansio n Hub CA TV CA TV (RG-59, 6, o r 1 1) CA TV up to 8 RAU s per E xpansion Hub RAU RAU RAU RJ-45 The Main Hub conve rts the RF signa ls to IF, then to opt ical sign als an d send s th em to E xpansion Hubs (u p to four) us ing op tical f iber c able. The Expansio n Hub conve rts the op tical si g- nals to elect rical signals and s ends them t o RAUs (up to eight) using 75 Ohm CA TV cable. The RAU co nverts t he IF s ignals to R F and sends them to passiv e antennas using 50 Ohm coaxial cabl e. Expansion Hu b Main H ub RAU The Main H ub se nds uplink RF s ignals to a base station us ing 50 O hm coa xial ca ble. The Main H ub rec eives the opt ical s ignal s from the Exp ansi on Hubs (up to fou r) usin g optica l fiber c able an d con - verts the m to R F sig- nals. The Expansio n Hub recei ves the IF sig nals from the RA Us (up to eight ) u sing CA T V cable and co nverts t hem t o optica l sign als. The RAU re ceive s uplink RF sign als from the pas sive anten na usi ng 50 Ohm co axia l cabl e and co nver ts them to IF sign als. Expansio n Hub The Main Hub also co mbines upli nk signals f rom the asso ci- ated Expa nsion Hubs. Fusion is a multi-ban d system. On e RF source (Band 1 or RF1) goes to the 35 M Hz band and th e other RF so urce (B and 2 or RF2 ) goe s to the 75 MHz band.It converts the signals to IF then to optical and sends them to up to four Expansio n Hub s usin g fiber o ptic cable. Uplin k Path: The Main Hub r eceives uplin k optical sign als from up t o fou r Expans ion Hubs us ing fiber optic cable s. It co n- verts the sign als to IF then to RF and s ends th em to the re spec tive Ban d1, 2, or 3 b ase statio n, rep eater, or MetroR each Focus syst em usin g 50 Ohm co axia l cable. The Main H ub also receiv es statu s inform ation from the Ex pansion Hubs and all RAUs using the fib er opt ic ca ble.

Downlink to Ma in Hub Uplink from Main Hub Downlink from Main Hub Uplink to M ain Hub RF1, 2, and 3 RF1, 2, and 3 Ther e are four fib er ports o n the front panel of the Main Hub; one port per Expansion Hub. The cable t ypically has a DB-9 fem ale and a DB -25 male conn ector. Refer t o Appendix A.6 on page A-11 for the cable pinout diagr am. Local Monit oring Use a crosso ver Etherne t cable (P N-4069-ADB ) to conne ct a laptop or PC to the RJ-45 female connector for lo cal monitoring or configuring using the AdminBro wser resident software. The cable ty pically has a R J-45 male connector o n both ends. Refer to Appendix A. 5 on page A-10 for the cable pino ut. 3.2.3 Main H ub LED Indi cator s The unit ’ s front pa nel LED s in dic ate faul ts and c omma nded o r fa ult lock outs. The LEDs do not in dic ate w arn ing s or whe ther th e sys tem te st has been pe rfor med. U se t he LEDs to provi de bas ic info rmat ion on ly, or as a ba ckup w hen you ar e no t usin g A dmi n- Bro wser. During this time, th e LEDs blink th rough the stat es shown in T able 3- 1, letting you visua lly verify that the LE D lamps and the firmwa re are func tioning pro perly. Upon com pletion o f initializa tion, the LEDs stay in one of the first two st ates sho wn in T able 3-1. The Main Hub automatically sends th e program bands comm and to all connected RAUs. A mismatc hed band causes a fault message to be displayed in AdminBrow ser and places the RAU in a disabled c ondition. N O T E: Ref er to Section 9.3.2 for troublesho oting using the LEDs. N O T E: Adm inBrowser sho uld be used for trouble shooting the sy stem. Only use LEDs for bac kup or confirmation. Howe ver, if there ar e communi- cation pro blems with in the syst em, the LED s may prov ide additio nal infor- mation that is not av ailable us ing AdminBrows er. Unit St at us LE Ds The Main Hub has one pair of s tatus LED s, labeled POWE R and STATUS, which can be in on e of the state s shown in T ab le 3-1.

The se LEDs can be: steady gree n steady red off - no color (valid o nly during 9 0 second p ower cycle) flashing red ( 60 ppm) There i s no off state when th e unit’ s power is on. Use AdminBrowser to deter- mine this.C A U T I O N: T he UPLIN K and DOWN LINK ports c annot handl e a DC power feed from the local base station. If DC power is present, a DC block must be used or the F usion hub may be dam aged. T able 3-3 9-pin D -sub Pin C onnector Func tions Pin Function 1 Alarm Sense Inp ut (DC Ground) 2 Alarm Sense Inp ut 3 3 Alarm Sense Inp ut 2 4 W arning Source Contact (positive connection) 5 W arning Source Contact (negative connection) 6 DC Ground (common) 7 Fault Sou rce Contact (positive connection) 8 Alarm Sense Inp ut 1 9 Fault Sou rce Contact (negative connection) The Fusion Main Hub periodically queries atta ched Expan sion Hub a nd Remote Access Uni ts for their status. Only faults are in dicated by the facepl ate LEDs.Figur e 3-5 Preferences Check Box es T o modify the setting, using Adm inBrowser, sele ct Alarms. Set Alar m Preferen ce and selec t the desir ed choice. Af ter you click OK, AdminB rowser refr eshes and updates the tree view ac cording to the new setti ng. N O T E: The setting is strictly visu al and o nly in Ad minBro wser. There is no affect on the ha rdware itsel f. By default, the event filtering is s et to “Enabl e viewing of Faults on ly”. All ev ents are display ed regardles s of the even t filtering sett ing. This ensures a smo oth install ation. Figur e 4-1 Expansio n Hub in a F usion System Fusion Exp ansion Hub Fusion Mai n Hub RAU Down link Path: The Expans ion Hub rec eives d ownli nk (Band 1, 2, and 3 ) optic al sign als fro m the Main Hub us ing fibe r optic cable. It con verts th e signals to el ectrica l and sends them to up to eigh t Rem ote Ac cess Units (RAU s) us ing CA TV cabl es.

The Expans ion Hub also receive s co nfigurat ion in format ion fro m the Main Hub u sing the fiber optic cable and rela ys it to the RAU s us ing CA TV cab le. Uplin k Path: The Expansi on Hub receives uplink (Band1, 2, and 3) IF signals from up to eight RAUs using CA TV cable s. It conve rts the si gnals to optica l and send s them to a Main H ub usi ng fib er optic cable. The Ex pansion Hub also receives RAU status in format ion usi ng CA TV cable and send s it and its own s tatus informa tion to the M ain Hub using the fib er op tic ca ble. Downlin k to Ex pan sion H ub Uplink from Exp ansion Hub Down link from Exp ansio n Hub Uplin k to Exp ansion Hub Use on ly 75 ohm type F conn ectors on the CA TV cable. The CA TV cable a lso delivers DC electr ical power to the RAUs. T he Expansi on Hub’ s DC voltage output is 5 4V DC nom inal. A cur rent limiti ng circuit pr otects the Hub if an y port draw s excessive p ower. N O T E: For syst em performan ce, it is imp ortant to use only low lo ss s olid cop- per center conducto r C A TV cable with q uality type F connectors that u se captive centerp in connector s. Refer to Ap pendix A for approv ed cables an d connecto rs. 4.2.2 Man ufactur ing R S-232 S erial Conne ctor Conso le Po rt This con sole port is o nly used by LGC Wireless manufacturin g test purp oses.The cable typi - cally ha s a RJ-45 mal e connector on both ends. This is critic al for en suring system performan ce. 4.2.4 LED In dicat ors The unit’ s fro nt panel LEDs indic ate faul t cond itions and command ed or faul t lockout s. The LED s do not ind icat e wa rnin gs or w het her the s ystem t est has bee n pe rfo rmed. Onl y us e t he LEDs to pr ovid e b asic in forma ti on or a s a ba ckup when you are n ot u sin g Admi nBrow ser. Upon power up, the Expansion Hub goes through a five- second test to check the L ED lamps.

During this time, the LEDs blink throu gh the states shown in T ab le 4-2, letting you visua lly verify tha t the LED lam ps and th e firmware are functi oning proper ly. N O T E: Refer to Section 9 for troubles hooting usin g the LEDs.UL STATUS LED state must be c hecked within th e first 90 seconds after power on. If initially green, then red after 90 seconds, it means that there is no communication with the Main Hub. If red on power up, replace the Expansion Hub. UL STATUS LED state must be checked within the first 90 seconds after power on. If initially green, then red after 90 seconds, it means that there is no communication with the Main Hub. If red on power up, the uplink laser has failed, replace the Expansion Hub. The h ub needs to be replaced. The Hub must be replaced.On ly faults are indicated by LEDs.An RAU passes c onverted 1F to RF (Downlink) and converted RF to 1F (Uplink) sig- nals betwee n an Expan sion Hub an d an attach ed passive antenna whe re the signa ls are transmitt ed to wir eless device s as shown in Figure 5-1. I t conv erts the s ig- nals to RF and s ends the m to a passi ve RF a ntenn a using 50 Oh m co axial c able. Also, t he RA U recei ves co nfigu ration inform ation from t he Fus ion Hu b usi ng the 75 Oh m CA TV cab le. Uplin k Path: The R AU re ceives uplink RF sig nals from a passive RF ante nna u sing 50 Ohm coaxial cable. It conv erts the signals to IF and sends them to a Fusio n Hub using 75 Ohm CA TV ca ble. Also, the RAU sends its status informa tion to the Fusion Hub u sing CA TV cable. The RAU re ceives 54VD C pow er from the F usion Hub port t hrough the 75 Ohm CA T V cable center pin.If the distance of a cable run is at its maximum and is of concern, LGC recom- mends the use of solid copper cable to ensure successful operation.Refer to App endix A for s pecific inf ormation. 5.3 RAU LED Indica tors Upon po wer up, the RAU goes th rough a tw o-second test to check the LED lam ps.

N O T E: Ref er to Section 9 for troubleshooti ng using the LEDs. St atus LE Ds The RAU status LE Ds can be in one of the states shown in T a ble 5-4. These LEDs can be: off steady gree n steady red There i s no off state when th e unit’ s power is on. Communication with the Fusion Hub is normal; however, the system test ma y need to b e performed or a warning condition may exist (use AdminBrowser to determine this).Only faults are in dicated b y the face plate LEDs. For more i nformation, refer to Ap pendix C. 5.5 R emot e Acc ess U nit Specif ication s N O T E: For sy stem perform ance, it is important that you u se only low l oss, solid copp er center c onductor CA TV cable wi th quality F connectors th at use captive cen terpin cond uctors. Re fer to Appen dix A for m ore inform ation.This requir es the follow ing steps: 1. Determin e the wireless service provider’s requirements: Refer to Section 6.2, “Downlink RSSI Desig n Goal,” on page 6-3.Po wer per carr ier decreases as the nu mber of ca rriers increa ses. 3. Develop an RF link budget: Refer to Section 6.5, “Estimating RF Coverage,” on page 6-14. Use the path loss slope (P LS), which gives a valu e to the RF p ropagatio n charac- teristics within the building, to conv ert the RF link budget into an estim ate of the coverage distance per antenna. This helps establish the quantities of Fusion equip- ment you need. The actu al path loss s lope that corresponds to the specific RF environm ent inside th e buildin g can also be determined empirically by perfo rm- ing an RF site-survey of the building. This involves transmittin g a calibrated tone for a fix ed antenna a nd making measuremen ts with a m obile antenn a througho ut the area surrounding the transmit ter. The indiv idual element s that must be consider ed in design ing a Fusio n solution are explained in the foll owing section s. N O T E: Access the LGC W ireless Customer Portal at L GCWireless.com for on-line di mensioning an d design tools. 6.

2 D ownl ink R SSI De sign Goal W ir eless service providers typically provide a minimum downlink signal level and an associated c onfidenc e factor when specifying coverage r equirements. These two fig- ures of merit are a function of wireless handset sensitivity and margins for f ading and body loss. W ir eless hands et sensitivit y is the wea kest signal that the han dset can p ro- cess reliably and is a combin ation of the ther mal noise in the channel, nois e figure of the handset receiver f ront end and minimum required SNR. Fade margins for multi- path fading (fast or sma ll-scale) an d log-norma l shadow fading (slow or large-scale) are determ ined by the desired co nfidence facto r, and other f actors. Down link RSSI design goal calculations for the GSM protocol are shown below for a 95% area cover- age confi dence factor. Wir eless s ervice prov iders may choose a high er level to ensure tha t in-buildin g signal dom inates any m acro signa l that may b e leaking i nto the build ing.These maxim um levels a re dicta ted by RF sign al quality an d regulat ory emission s issues. In general, as the number of RF carrie r increases, the maxi mum power pe r carrier decr eases. The maxim um input p ower to the H ub is determ ined by sub tracting th e system gain from the m aximum o utput power of the RAU. System gai n is software selectable f rom 0 dB to 15 dB in 1 dB steps. Additiona lly, both the uplink and downlink gai n of each RAU can be r educed by 10 dB in 1 dB steps. When co nnecting a Hu b to a b ase station or repeater, attenuation on the d ownlink is typically required to avoid excee ding Fusi on’ s maximum output powe r recomm enda- tions. WA R N I N G: E xceeding the maxim um input po wer may ca use per ma- nent damage to the Hub. N O T E: The se specificatio ns are for downlink power at th e RAU out put (exclud ing antenna).

In many in stances, subs criber usag e increases with time and the wireless p rovider responds by in creasing the load on the installed Fusion system. For ex ample, th e initial deplo yment m ight only requ ire two RF c arriers, bu t four RF carriers may be needed in the futur e based on ca pacity gro wth forecas ts. There are two option s for deal ing with th is scenario: 1. Design th e initial co verage w ith a maxim um power per carrier for f our RF carr i- ers. This w ill likel y result in a dditional RAUs. 2. Design the initial coverage for two RF car riers, but r eserve RAU ports o n the Hu b for futu re use. Thes e ports can b e used to f ill potential co verage ho les once t he power pe r carrier is lo wered to accommo date the two additional carriers. T able 6-5 UMTS Pow er per Ca rrier No.Note: Operation at or above these output power levels may prevent Fusion from meet- ing RF performance specifications or FCC P art 15 and EN55022 emissions require- ments. In additio n, uplink a nd downlink g ains of each RAU can be indepen - dently dec reased by 10 d B in one d B steps us ing AdminB rowser. If th e maximum distance is not required, then copper-clad o ver steel center-conductor cable may be use to red uce cable c osts. If the CA T V cable is longer th an the recom mended dist ance per cab le type, th e gain of the system will decr ease, as sho wn in T able 6-6 and T a ble 6-7. If the d istance of a cab le ru n is at it s max imum a nd is of conce rn, LGC recom men ds the use of sol id cop per cable to ensur e succ essful operat ion. If the dis tance of a cab le run is at its maxim um and is of concern, LGC recomm ends the use of sol id copp er cable t o ensur e succ essful o perati on.Since in-bu ilding system s, such a s the Fusion, are ge nerally downlink- limited, this approach is applica ble in the majo rity of dep loyments. T able 6-8 lists coaxia l cable loss for var ious cabl e lengths.

Y o u can calculate the distance, d, corresp onding to the maximum allo wable path loss using equation s introduced in the fol lowing secti ons. Prentice Hall P TR, 1996. T able 6-9 A ve rage Sign al Loss of Co mmon Building M aterials Partition T ype Loss (dB) Frequency (MHz) Metal wall 26 815 Aluminum siding 20 815 Foil insulation 4 815 Cubicle walls 1.4 900 Concrete block wall 13 1300 Concrete floor 10 1 300 Sheetrock 1 to 2 1300 Light machinery 3 1300 General machinery 7 1300 Heavy machinery 1 1 1300 Equipment racks 7 1300 Assembly line 6 1300 Ceiling duct 5 1300 Metal stairs 5 1300 T able 6-1 0 Frequency Band s and the V alue of the Firs t T erm in Equ ation (3) Frequency Band (MHz) Mid-Band Frequency (MHz) 20log 10 (4.Su ppose 3 dBi omni-direct ional ante nnas are use d in the des ign. Thus, th is design goal will on ly be met “on average” over 95% of the ar ea being covered. At any given point, a fade ma y bring the s ig- nal level un derneath the design go al. Note that this method o f calculat ing a link b udget is only for the dow nlink path.F or thi s ca se w e as sumed a circ ula r r adiat ion pat tern, thoug h t he actu a l a rea cove red depe nds upo n the p atte rn of t he ante nna and the obs tru ctio ns in the fac ili ty. B efore any RF levels are tested in th e building, you ca n estimate that two antennas per lev el will be needed. This assumes no propagation between floors. If the dis- tances differ, use the tables in Se ction 6.4, “System Gain,” on page 6-11 to deter- mine system gains or losses. The path loss may need to be recalcul ated to ass ure adequate s ignal leve ls in the req uired cover age distance. The abov e estimates a ssume t hat all cable length requir ements a re met. If Expa nsion Hubs can not be place d so that th e RAUs ar e within the distance req uirement, addi- tional Ex pansion H ubs may nee d to be place d closer to the requir ed RAUs loc ations.

An RF Site Survey a nd Building Evaluatio n is required to accurate ly establish the Fusion eq uipment quantities req uired for the building. The site surv ey measur es the RF losses within the building to determine the actual PLS, which are used in the final path loss formula to d etermine th e actual requirements o f the Fusion system. Su ppose 3 dBi omni-direct ional ante nnas are use d in the des ign. Thus, th is design goal will on ly be met “on average” over 95% of the ar ea being covered. At any given point, a fade ma y bring the s ig- nal level un derneath the design go al. Note that this method o f calculat ing a link b udget is only for the dow nlink path.Fo r t his case we a ssu med a c irc ular ra diati on patte rn, tho ugh the actu a l area cover ed depe nds upon the pat tern of the antenna and the obs tru ction s in the faci lity. B efore you te st any RF lev els in the building, you can esti mate that four antennas p er level will be needed. Th is assume s n o propagation between floors. If the distances differ, use th e tables in Section 6.4, “System Gain, ” on page 6 -1 1 to determin e system gains or los ses. The path loss may ne ed to be reca lculated to assure ad equate signa l levels in the requi red coverage d istance. The abov e estimates a ssume t hat all cable length requir ements a re met. If Expa nsion Hubs can not be place d so that th e RAUs ar e within the distance req uirement, addi- tional Ex pansion H ubs may nee d to be place d closer to the requir ed RAUs loc ations. An RF Site Survey a nd Building Evaluatio n is required to accurate ly establish the Fusion eq uipment quantities req uired for the building. The site surv ey measur es the RF losse s within the b uilding to determine th e actual PLS, used in the final p ath loss formula to determin e the actua l requiremen ts of the F usion system.

The end result can often b e stated as a “design g oal” in wh ich the cover age is determ ined by the maximum distance from each RAU b efore the s ignal streng th falls ben eath that goal. Comp osite power le vels above this limit will cause damage to the M ain Hub. N O T E: V isit th e LGC Wireless customer p ortal at LGC W ireless.com for the on-lin e Link Budge t T o ol. 6.6.1 Eleme nts of a Link Budge t for Na rrow band St an dards The link bud get repres ents a typica l calculatio n that might be used to determine how much path loss can be afforded in a Fu sion design. This link budget analyzes both the downlink an d uplink p aths. For mo st configu rations, the downlink re quires lower path loss and is there fore the limit ing factor in the system d esign. It is for this reas on that a pred etermined “design goal” for the do wnlink is sufficient to predict co verage distance. The link budget is organized in a simple manner: the transmitted power is calculated, the airlink losses due to fadin g and body loss are sum med, and the receiver sensitivity (minimum lev el a s ignal can be r eceived for acc eptable call q uality) is calcul ated. The maximum allowable p ath loss (in d B) is the d ifference between the transmitte d power, less the airlink loss es, and the receiver sens itivity. From the path loss, the maximum coverage d istance can b e estimated using the path loss formu la prese nted in Section 6.5.1. T ab le 6-19 prov ides link b udget consi derations for narrowban d systems. On the downlink, attenuation must be chosen so that the maximum power per carrier going into the Main Hub does not exceed the levels given in Section 6.3. On the uplink, attenuation is chosen to keep the maximum uplink signal and noise level l ow enough to prevent base station alarms but small enough not to cause degradation in the system sensitivity.