Bird Technologies Group 5PI618850 BI-DIRECTIONAL SIGNAL BOOSTER User Manual 61 88 50 V4 less block

Bird Technologies Group BI-DIRECTIONAL SIGNAL BOOSTER 61 88 50 V4 less block

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Part No.Installation and Operation Manual for the Two-Way Signal Booster SystemModel Number 61-88-50First Printing: May 20047-9375-4Version Number Version Date1 05/06/042 10/06/043 10/27044 10/29/04Copyright © 2004 TX RX Systems Inc.61-88-50 UserMan Page 1 of 29
NOTEWARNINGWarrantyThis warranty applies for one year from shipping date.TX RX Systems Inc. warrants its products to be free from defect in material and workman-ship at the time of shipment. Our obligation under warranty is limited to replacement orrepair, at our option, of any such products that shall have been defective at the time ofmanufacture.TX RX Systems Inc. reserves the right to replace with merchandise of equal performancealthough not identical in every way to that originally sold.TX RX Systems Inc. is not liable for damage caused by lightning or other natural disasters.No product will be accepted for repair or replacement without our prior written approval.The purchaser must prepay all shipping charges on returned products. TX RX SystemsInc. shall in no event be liable for consequential damages, installation costs or expense ofany nature resulting from the purchase or use of products, whether or not they are used inaccordance with instructions. This warranty is in lieu of all other warranties, either ex-pressed or implied, including any implied warranty or merchantability of fitness. No repre-sentative is authorized to assume for TX RX Systems Inc. any other liability or warrantythan set forth above in connection with our products or services.Terms and Conditions of SalePRICES AND TERMS: Prices are FOB seller’s plant in Angola, NY domestic packagingonly, and are subject to change without notice. Federal, State and local sales or excisetaxes are not included in prices. When Net 30 terms are applicable, payment is duewithin 30 days of invoice date. All orders are subject to a $100.00 net minimum.QUOTATIONS: Only written quotations are valid.ACCEPTANCE OF ORDERS: Acceptance of orders is valid only when so acknowledgedin writing by the seller.SHIPPING: Unless otherwise agreed at the time the order is placed, seller reserves theright to make partial shipments for which payment shall be made in accordance withseller’s stated terms. Shipments are made with transportation charges collect unlessotherwise specified by the buyer. Seller’s best judgement will be used in routing, exceptthat buyer’s routing is used where practicable. The seller is not responsible for selectionof most economical or timeliest routing.CLAIMS: All claims for damage or loss in transit must be made promptly by the buyeragainst the carrier. All claims for shortages must be made within 30 days after date ofshipment of material from the seller’s plant.SPECIFICATION CHANGES OR MODIFICATIONS: All designs and specifications ofseller’s products are subject to change without notice provided the changes or modifi-cations do not affect performance.RETURN MATERIAL: Product or material may be returned for credit only after writtenauthorization from the seller, as to which seller shall have sole discretion. In the eventof such authorization, credit given shall not exceed 80 percent of the original purchase.In no case will Seller authorize return of material more than 90 days after shipment fromSeller’s plant. Credit for returned material is issued by the Seller only to the originalpurchaser.ORDER CANCELLATION OR ALTERATION: Cancellation or alteration of acknowledgedorders by the buyer will be accepted only on terms that protect the seller against loss.NON WARRANTY REPAIRS AND RETURN WORK: Consult seller’s plant for pricing.Buyer must prepay all transportation charges to seller’s plant. Standard shipping policyset forth above shall apply with respect to return shipment from TX RX Systems Inc. tobuyer.DisclaimerProduct part numbering in photographs and drawings is accurate at time of printing.Part number labels on TX RX products supercede part numbers given within this manual.Information is subject to change without notice.SymbolsCommonly UsedCAUTION orATTENTIONHigh VoltageUse SafetyGlassesESDElectrostaticDischargeHot SurfaceElectrical ShockHazardImportantInformation61-88-50-UserMan Page 2 of 29
To satisfy FCC RF exposure requirements for transmittingdevices, a separation distance of 1.0 Meters or more shouldbe maintained between the UPLINK antenna of this deviceand persons during device operation. To satisfy FCC RFexposure requirements for mobile transmitting devices, aseparation distance of 0.3 Meters or more should be main-tained between the DOWNLINK antenna of this device andpersons during device operation. To ensure compliance,operations at closer than these distances is not recom-mended.The antenna used for this transmitter must not be co-locatedin conjunction with any other antenna or transmitter.WARNINGNOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pur-suant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiate radio fre-quency energy and, if not installed and used in accordance with the instructions, may cause harmful inter-ference to radio communications. However, there is no guarantee that interference will not occur in aparticular installation. If this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following measures: — Reorient or relocate the receiving antenna. — Increase the separation between the equip- ment and receiver. — Connect the equipment into an outlet on a circuit different from that to which the re- ceiver is connected. — Consult the dealer or an experienced radio! TV technician for help. Changes or modifications not expressly approved by TXRX System Inc. could void the user’s authority to operatethe equipment.WARNINGThis device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing two conditions: (1) this device may not cause harmful interference and(2) this device must accept any interference received, including interferencethat may cause undesired operation.61-88-50-UserMan Page 3 of 29
Antenna System InstallationThe antenna or signal distribution system consists of two branches. An uplinkbranch typically uses an outdoor mounted, unidirectional gain antenna suchas a yagi and a downlink signal radiating system consisting of a network ofzero-gain whip antennas or lengths of radiating cable usually mounted insideof the structure.Even though the antenna system may not be supplied or installed by TX RXSystems. The following points need to be observed because both the safetyof the user and proper system performance depend on them.1) Antenna system installation should only be performed by qualified techni-cal personnel.2) The following instructions for your safety describe antenna installationguidelines based on FCC Maximum RF Exposure Compliance require-ments.3) The uplink antenna is usually mounted outside and exchanges signalswith the repeater base station or donor site. It is typically mounted perma-nently-attached to the building wall or roof. The gain of this antenna shouldNOT exceed 10 dB. Only qualified personnel should have access to theantenna and under normal operating conditions, no one should be able totouch or approach it within 1 meter (40 inches).4) The downlink or in-building signal distribution system is connected to thedownlink booster port using coaxial cable. The distribution system mayuse radiating coaxial cable or a network 1/4 wave whip antennas whosegain does not exceed 0 dB for any radiator. These antennas should beinstalled so that the user cannot approach any closer than 0.3 meters (12inches) from the antenna.61-88-50-UserMan Page 4 of 29
Manual 7-9375-4 10/29/04 Table of ContentsTable of ContentsGeneral Description .............................................................................................. 1Unpacking ....................................................................................................... 1Installation ....................................................................................................... 1 Location ....................................................................................................... 1 Mounting ....................................................................................................... 3Connections ....................................................................................................... 5 AC Line ....................................................................................................... 5 Backup DC Power.................................................................................................. 5 Alarm Terminals (Form-C Contacts) ...................................................................... 5 RF Connections..................................................................................................... 6 Pre-RF Connection Testing................................................................................... 6 Test Equipment ...................................................................................................... 6 Antenna Isolation ................................................................................................... 6 Procedure ....................................................................................................... 6 Increase isolation or decrease gain?..................................................................... 7Normal Operation .................................................................................................. 7 LED Status Indicators............................................................................................8 Front Panel LED’s ................................................................................................ 8 Module LED’s ...................................................................................................... 8 OLC Light Bars .................................................................................................... 8 Front Panel Controls & the LCD Display................................................................ 8 LCD Display Screen .............................................................................................. 8 Configuration Settings ........................................................................................... 10 Restore Original Configuration ........................................................................... 10 Calibrate Currents .............................................................................................. 10 Set Gain ....................................................................................................... 10 Set Output Level ................................................................................................. 10 Detailed Status Screens ........................................................................................ 10 Amplifiers ....................................................................................................... 10 Power Supply...................................................................................................... 11 OLC ....................................................................................................... 11 OLC Datalog.......................................................................................................11Alarms ....................................................................................................... 11 LED Indicators .......................................................................................................11 Form-C contacts .................................................................................................... 12Performance Survey.............................................................................................. 12Maintenance and Repair ....................................................................................... 13 Power Amplifier Replacement................................................................................13 Module Replacement............................................................................................. 15 Display/User Interface Replacement .....................................................................15 Power Supply Replacement................................................................................... 16 Filter Replacement ................................................................................................ 17 Card Cage Replacement ....................................................................................... 17Recommended Spares.......................................................................................... 1761-88-50-UserMan Page 5 of 29
Manual 7-9375-4 10/29/04 Table of ContentsFigures and TablesFigure 1 Cabinet mounting hole layout 3Figure 2 Front internal cabinet view 4Figure 3 AC power entry 5Figure 4 Measuring antenna isolation 7Figure 5 Boot-up display 7Figure 6 Operational status display 8 Figure 7 Menu System 9Figure 8 Measuring Booster Gain 12Figure 9 Performance Survey 13Figure 10 Removing the Power Amplifier (1 of 3) 14Figure 11 Removing the Power Amplifier (2 of 3) 14Figure 12 Removing the Power Amplifier (3 of 3) 15Figure 13 Disconnecting Display/User Interface 16Table 1 Part Number Designations 1Table 2 Model 61-88-50 Part Family 2Specifications 18Block Diagram High Gain (1 of 4) 19Block Diagram Med Gain (2 of 4) 20Block Diagram Low Gain (3 of 4) 21Block Diagram (4 of 4) 22Celcius to Farenheit Conversions 2361-88-50-UserMan Page 6 of 29
Manual 7-9375-4 Page 1TX RX Systems Inc. 10/29/04GENERAL DESCRIPTIONSignal boosters extend radio coverage into areaswhere abrupt propagation losses prevent reliablecommunication. No frequency translation (conver-sion) occurs with this device. Signal Booster II (SBII) is available in a variety of configurations asshown in Table 1. The product model number isused to describe each configuration available. Thismanual details the installation and operation of the61-88-50 series of boosters. The complete productfamily for the 61-88-50 boosters are listed in Table2.The system can be ordered in one of three maxi-mum gain configurations including High Gain (+80dB gain max), Medium Gain (+60 dB gain max),and Low Gain (+45 dB max gain). The maximumgain of the system is determined by the exact typeof cards plugged into the low and mid level slots asshown in the block diagrams at the back of thismanual. The maximum gain of the uplink or down-link branch is adjustable and can be setup inde-pendently. In addition, the gain of each branch canbe reduced up to 30 dB in 0.5 dB increments viasoftware interface.The bandwidth of the system is determined by thepassband of the input/output filtering. Availablebandwidths are shoen in Table 1.Three cabinet styles are available. The G1 suffixdenotes a NEMA-4 style cabinet which is suitablefor indoor or outdoor use. The G2 suffix denotes astainless steel NEMA-4X style cabinet suitable forcorrosive environments such as salt air and the RMsuffix a rack mount version which is intended forindoor mounting only.UNPACKINGIt is important to report any visible damage to thecarrier immediately. It is the customer's responsibil-ity to file damage claims with the carrier within ashort period of time after delivery (1 to 5 days).Care should be taken when removing the unit fromthe packing box to avoid damage to external heat-sink fins. Use caution because the heatsink finscan have somewhat sharp corners. Signal BoosterII (SB II) weighs about 85 lbs. so use enough peo-ple when lifting the unit.INSTALLATIONThe following sections discuss general consider-ations for installing the booster. All work should beperformed by qualified personal in accordance withlocal codes.LocationThe layout of the signal distribution system will bethe prime factor in determining the mounting loca-tion of Signal Booster II. However, safety and ser-viceability are also key considerations. The unitshould be located where it cannot be tamperedwith by the general public, yet is easily accessibleto service personnel. Also consider the weight ofthe unit and the possibility for injury if the unitshould become detached from its mounting sur-faces for any reason.Tabl e 1: Part number designations for 61-88-50 booster family.FAMI LY FREQUENCY BANDMODEL MAXIMUMGAINBANDWIDTH ENCLOSURE TYPE61 = 2 Way 88 = 896 - 902935 - 94150 = Signal Booster IIA = 80 dBB = 60 dBC = 45 dB05 = 6 MHz G1 = Painted, NEMA 4G2 = Stainless NEMA4X61 - 88 - 50 - A06 - G161-88-50-UserMan Page 7 of 29
Manual 7-9375-4 Page 2TX RX Systems Inc. 10/29/04Part Mumber Relative Gain Uplink/Dowlink (MHz) Guardband (MHz) Enclosure61-88-50-A06-G1 High 896-902 / 935-941 33 NEMA 461-88-50-B06-G1 Mid 896-902 / 935-941 33 NEMA 461-88-50-C06-G1 Low 896-902 / 935-941 33 NEMA 461-88-50-A06-G2 High 896-902 / 935-941 33 NEMA 4X61-88-50-B06-G2 Mid 896-902 / 935-941 33 NEMA 4X61-88-50-C06-G2 Low 896-902 / 935-941 33 NEMA 4XTable 2: SB II 61-88-50- part family.61-88-50-UserMan Page 8 of 29
Manual 7-9375-4 Page 3TX RX Systems Inc. 10/29/04Although signal boosters can operate for yearswithout being attended to, the unit will need to beaccessed by service personnel with troubleshoot-ing equipment, such as digital multimeters andspectrum analyzer or a laptop computer from timeto time. The location of the power source will alsohave a bearing on the mounting location. SB IIuses external heat sinks and needs to be mountedwhere there can be an unobstructed air flow overthe heat sinks fins. The SB II cabinet will stay warmduring normal operation so in the interest of equip-ment longevity, avoid locations that carry hotexhaust air or are continually hot.MountingFigure 1 shows mounting hole dimensions and lay-out for the cabinet. Mount the cabinet using 3/8”(10 mm) diameter steel bolts (not supplied). Werecommend flat washers on both ends and a lockwasher under the nut. Nut and bolt mounting is pre-ferred to the use of lag bolts. Use backer blockswhere necessary to spread the force over a largersurface area. In areas of known seismic activity,additional devices such as tether lines may be nec-essary.Because TX RX Systems, Inc. cannot anticipate allthe possible mounting locations and structuretypes where these devices will be located, we rec-ommend consulting local building inspectors, engi-neering consultants or architects for advice on howto properly mount objects of this type, size andweight in your particular situation.It is the customer’s responsibility to make surethese devices are mounted safely and in compli-ance with local building codes.MOUNTING TABSDOORCLAMPS0.438" DIA.(12mm)0.438" DIA.(12mm)SIDE VIEW18"(457mm)21.25"(540mm)Figure 1: SB II cabinet mounting hole layout.61-88-50-UserMan Page 9 of 29
Manual 7-9375-4 Page 4TX RX Systems Inc. 10/29/0461-88-50Power SupplyAC PowerSwitchBatteryBackupSwitchForm-CContactsConnect BackupBattery hereUplink PowerAmplifierDuplexerDownlink PowerAmplifierDuplexerMenuSelectButtonsUplink M/L Card(for High Gain Model)Uplink M/L Card(for Mid Gain Model)Uplink Low Gain Card(for Low Gain Model)Uplink L/L Card(for High Gain Model)Attenuator Card(for Mid Gain Model)Attenuator Card(for Low Gain Model)UplinkPowerDistributionDownlink M/L Card(for High Gain Model)Downlink M/L Card(for Mid Gain Model)Downlink Low Gain Card(for Low Gain System)Downlink L/L Card(for High Gain Model)Attenuator Card(for Mid Gain Model)Attenuator Card(for Low Gain Model)DownlinkPowerDistributionControllerDownlink InUplink Out Uplink OutDownlink InAC Power EntryComm-Card(Optional)Spare(unused slot) OLC Light BarsStatus LEDs IsolatorTes t Po r t IsolatorTe s t Po r tDisplay PanelFigure 2: Front view of SB II. Model 61-88-50 two-way signal booster shown as an example.61-88-50-UserMan Page 10 of 29
Manual 7-9375-4 Page 5TX RX Systems Inc. 10/29/04CONNECTIONSAll cabling connections to the booster should bemade and checked for correctness prior to power-ing up the system.AC LineSignal Booster II is designed to be hard-wired to110 single phase AC lines at 50 - 60 Hz (see Fig-ures 2 and 3). A junction box is provided for thispurpose. There is a hole provided in the cabinetbottom-wall for bringing in the AC line. The entrybox contains a standard two-receptacle AC outletthat serves as a junction for the incoming line andalso provides a convenient AC outlet for runningtest equipment. See figure 3 below. Use conduit forrunning the wiring into SB II and #14 gauge orlarger conductors.Backup DC PowerSB II may be run on a DC power source that cansupply 24 to 30 volts DC at 2.5 amps. Screw termi-nals are provided for this purpose (see figure 2).This line should be equipped with a fast-acting 3Amp fuse. Use #16 or #18 gauge wire for this con-nection.The power system in SB II automatically switchesto this backup DC input when the AC supply failsfor any reason including a power outage or inten-tional disconnection.It is not necessary that this connection be made fornormal operation on the AC line.Alarm Terminals (Form-C contacts)Two sets of contacts are provided to monitor thegeneral operating condition of SB II and areintended for connection to a supervisory system.See figure 2. One set changes state when the AC power supplyshuts down for any reason and the unit switches tooperation on the backup DC power system.The other set of contacts changes state when anyof a number of fault conditions arises within theelectronics such as current drain outside of theexpected operating range in some module.A six-terminal strip is provided for the interface anduses screw terminals for ease of connection. Routethe alarm wires through one of the access holes inthe bottom of the box, strip about 3/16” of insula-Figure 3: Wiring of AC line entry.AC LineGround Wire(green orgreen/yellow)Neutral Wire(white)Hot Wire(black)61-88-50-UserMan Page 11 of 29
Manual 7-9375-4 Page 6TX RX Systems Inc. 10/29/04tion from each end, loosen the screw terminal,insert and retighten. Use #20 or #22 gauge insu-lated wire.Use of these terminals is optional. SB II also has anumber of status LEDs built-in to individual mod-ules to indicate a fault condition.RF ConnectionsN(F) bulkhead connectors are provided on the bot-tom of the cabinet for connection to the signal dis-tribution system. Be sure that the correct branch ofthe distribution system is connected to its corre-sponding Uplink/Downlink connector or the systemwill not work properly. Using high-quality connec-tors with gold center pins is advised. Flexiblejumper cables made of high-quality coax are alsoacceptable for connecting to rigid cable sections.PRE-RF CONNECTION TESTSAntenna isolation between the uplink and downlinkbranches should be measured before connectingthe signal booster to the antenna system. This stepis necessary to insure that no conditions exist thatcould possibly damage the signal booster andshould not be skipped for even the most thoroughlydesigned system.Test EquipmentThe following equipment is required in order to per-form the pre-installation measurements.1) Signal generator for the frequencies of interestcapable of a 0 dBm output level. Modulation isnot necessary.2) Spectrum analyzer that covers the frequenciesof interest and is capable of observing signallevels down to -100 dBm or better.3) Double shielded coaxial test cables made fromRG142, RG55 or RG223 coaxial cable.Antenna Isolation Just like the feedback squeal that can occur whenthe microphone and speaker get too close to eachother in a public address system, a signal boostercan start to self oscillate. This can occur when theisolation between the input antenna or signalsource and the output distribution system does notexceed the signal boosters gain by at least 15 dB.Oscillation will reduce the effectiveness of the sys-tem and may possibly damage the power amplifierstages.In general, if one or both antenna ports are con-nected to sections of radiating coaxial cable (lossycable) the isolation will be more than adequatebecause of the high coupling loss values that areencountered with this type of cable. When a net-work of antennas are used for the input and output,this problem is much more likely. Isolation valuesare relatively easy to measure with a spectrumanalyzer and signal generator.Procedure for Measuring Antenna Isolation1) Set the signal generator for a 0 dBm outputlevel at the center frequency of one of the signalboosters passbands (815 or 860 MHz)2) Set the spectrum analyzer for the same centerfrequency and a sweep width equal to or justslightly greater than the passband (18 MHz)chosen in step one.3) Connect the test leads of the signal generatorand the spectrum analyzer together using afemale barrel connector, see Figure 4. Observethe signal on the analyzer and adjust the inputattenuator of the spectrum analyzer for a signallevel that just reaches the 0 dBm level at the topof the graticule. 4) Referring to figure 4, connect the generator testlead to one side of the signal distribution system(external antenna) and the spectrum analyzerlead to the other (internal distribution system)and observe the signal level. The differencebetween this observed level and 0 dBm is theisolation between the sections. If the signal istoo weak to observe, the spectrum analyzer'sbandwidth may have to be narrowed and itsinput attenuation reduced. Record the isolationvalue. The isolation value measured shouldexceed the signal boosters gain figure by atleast 15 dB.It is wise to repeat the procedure listed above formeasuring antenna isolation with the signal gener-ator set to frequencies at the passbands edges inorder to see if the isolation is remaining relativelyconstant over the complete width of the passband.61-88-50-UserMan Page 12 of 29
Manual 7-9375-4 Page 7TX RX Systems Inc. 10/29/04Increase Isolation or decrease gain?Modification of the signal distribution system isrequired to increase isolation between the up anddownlink path. This will require significant changesthat may or may not be practical from a cost orlogistical standpoint. Gain reduction may be theonly alternative but this is easy to achieve with Sig-nal Booster II. Gain for both the uplink and down-link path can be set from 50 to 80 dB. Here are thesteps to follow.1) Subtract 15 dB from the measured isolationbetween uplink and downlink branches of theantenna/signal distribution system. This is themaximum usable gain level for both the uplinkand downlink path.2) Accessing the user menu through the frontpanel, set the gain of the uplink path to the leveldetermined in step 1. A detailed explanation ofhow to negotiate the menu system is given onpage 9.3) Repeat step 2 for the downlink path.NORMAL OPERATIONPower is applied to the signal booster by turning onthe AC power switch located on the junction boxinside the cabinet, refer to figure 2. The followingstartup sequence occurs.1) At turn-on, the four status LEDs on the frontpanel glow red for about 5 seconds as the resultof entering a self-check mode.2) The two green OLC light bars will be fully litalong their length for approximately 5 seconds.3) The LCD display shows the firmware revisionscreen for about 5 seconds (see Figure 5).INTERNALSIGNAL DISTRIBUTIONSYSTEMSPECTRUMANALYZEREXTERNALANTENNASIGNALGENERATORZERO LOSSREFERENCEISOLATION (dB)Figure 4: Typical test equipment interconnection for measuring antenna isolation.Figure 5: Software version is displayed brieflyduring the boot-up sequence.61-88-50-UserMan Page 13 of 29
Manual 7-9375-4 Page 8TX RX Systems Inc. 10/29/044) After the self check is complete, the four statuslights should turn green and the light barsshould be dark unless a signal is activating OLCaction in either the uplink or downlink.If the OLC light-bar segments on both the Uplinkand Downlink display light-up and pulse on and offevery 1 to 3 seconds simultaneously, SHUT OFFTHE POWER IMMEDIATELY! The booster may beoscillating. Disconnect the uplink and downlinkantenna connections and measure the isolationbetween the two branches to insure there is suffi-cient isolation. Reset the booster gain as needed.5) The LCD display should appear similar to Fig-ure 6 after the self check is complete.LED Status indicatorsThe SB II front panel has 4 status LEDs that glowgreen or red to indicate the general health of 4 sub-systems from a DC perspective. Additionally, theplug-in, Low-Level and Mid-Level amplifier cardshave tri-color (green-orange-red) status LEDs visi-ble when the cabinet door is open.FRONT PANEL LEDS:24V: Green indicates the 24 volt DC Power systemis operating properly.12V: Green indicates the 12 volt DC power systemis operating properly.UL PA: Green indicates that the uplink poweramplifier is drawing current within the expectedoperating range and at a safe temperature.DL PA: Green indicates that the downlink poweramplifier is drawing current within the expectedoperating range and at a safe temperature.Module LEDS;Mid-Level, Low-Level, Low Gain Module: Greenindicates current or device temperature within theexpected operating range. Orange indicates cur-rent or temperature slightly out of the expectedrange but the overall booster operation may stillappear normal. Red indicates a large departurefrom normal current or device temperature andbooster operation is likely to be affected. See page9 for more details about alarm operation.Attenuator Module: Green only indicating Dcpower is applied to the card.OLC LIGHT BARSIdeally, there should be little or no light bar activity.Each light bar segment represents an average 3dB of OLC gain reduction. OLC (output level con-trol) is meant to reduce gain for transient episodesof very strong signals. However, when OLC isactive, gain is reduced for all signals being pro-cessed by that booster branch and that reductionmay compromise communications for weaker sig-nals in the booster’s passband.If more than 2 or 3 light-bar segments are lit upmore than occasionally, it is advised that the gainof that branch be reduced. See the SET GAINparagraph on page 10 for details.Front Panel Controls & the LCD DisplaySB II is software directed so control of the systemis accomplished via user interface with the controlpanel using the LCD display screen and the menuselect buttons, see figure 2. A flow chart showingall of the possible user menu selections is shown inFigure 7.LCD ScreenOnce the boot-up sequence is completed (afterseveral seconds) the LCD screen will switch to themain status display as shown in figure 6. This is thenormal display for the signal booster. The systemwill return to this display from any other display ifnone of the menu interface buttons are pressedwithin 2 minutes. The exception is the OLC statusWARNINGFigure 6: Normal Operational LCD Display.61-88-50-UserMan Page 14 of 29
Manual 7-9375-4 Page 9TX RX Systems Inc. 10/29/04GAIN## dB## dBOUT LVL## dBm## dBmUL:DL:SBII Status OKCalibrate CurrentsSet GainSet Output LevelChange Gain ConfigRestore Orig ConfigUplink Low Level AmpUplink Mid Level AmpUplink Power AmpDownlink Low AmpDownlink Mid AmpDownlink Power AmpPower SupplyCurrent OLC StatusOLC Historical InfoOLC Historical InfoAvg#dB#%Day#dB#%ULCurrent OLC StatusUplink#dB#%Downlink#dB#%Name of AmpCurrent # Temp #Amp Status MessagePower Supply Status24v ### 12v ###Set Desired GainUplink## dBDownlink## dBDoneSave Changes?Ye s N oUplink## dBmDownlink## dBmDoneSet Output LevelsUL >DL >____Gain ## dB____Gain ## dBDoneChange Gain ConfigAre you sureyou want to restorethe Factory Presets?Ye s N oPress Enter toCalibrate CurrentsCalibrating . . .Done CalibratingPress Enter to SavePress ENTER keyKEY61-89A-50 USER MENU 2 (8-20460B)Press Item Select arrow keyEEEEEEEEEEEEEEEEEEDetailed StatusConfigurationNOTE:Press ENTERto see DownlinkNOTE:Button press requiredto exit this displayNOTE:Pressing CANCEL always returnsyou to the previous menu withoutsaving changesNOTE:If no button is pressed within2 minutes, system returns toMain Status Display ScreenNOTE:This menu screen will also give youthe option to place an amplifier intoBypass or take one out of Bypass.Figure 7: Signal Booster II Menu 61-88-50-UserMan Page 15 of 29

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