Fiber Distributed Antenna System (Fiber DAS) Operation Manual ©Copyright 2017 by Bird Technologies, Inc. Instruction Book Part Number 920-Fiber-DAS Rev. P3 Delta Node® is a registered trademark of Delta Node Solutions Ltd. and Bird Technologies, Inc.
Safety Precautions The following are general safety precautions that are not necessarily related to any specific part or procedure, and do not necessarily appear elsewhere in this publication. These precautions must be thoroughly understood and apply to all phases of operation and maintenance. WARNING Keep Away From Live Circuits Operating Personnel must at all times observe general safety precautions.
Safety Precautions Safety Symbols WARNING Warning notes call attention to a procedure, which if not correctly performed, could result in personal injury. CAUTION Caution notes call attention to a procedure, which if not correctly performed, could result in damage to the instrument. Note: Calls attention to supplemental information. The laser used in this system is a Class 3b laser that produces invisible infra‐red coherent light. Avoid looking into connected fibers and receptacles.
Fiber Distributed Antenna System (Fiber DAS) Warning Statements The following safety warnings appear in the text where there is danger to operating and maintenance personnel and are repeated here for emphasis. WARNING This is NOT a consumer device. It is design for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC licensee to operate this device. You MUST register Class B signal boosters (as defined in 47 CFR 90.219) online at www.fcc.
Safety Precautions Caution Statements The following equipment cautions appear in the text and are repeated here for emphasis. CAUTION Turn Off Test Tone Do not forget to turn off the test tone when you are done with your uplink. Better check one extra time. They will otherwise interfere with the normal operation of the system by causing noise to the base station.
Fiber Distributed Antenna System (Fiber DAS) Safety Statements USAGE ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY THE MANUFACTURER MAY IMPAIR THE INSTRUMENT’S SAFETY PROTECTION. USO EL USO DE ESTE INSTRUMENTO DE MANERA NO ESPECIFICADA POR EL FABRICANTE, PUEDE ANULAR LA PROTECCIÓN DE SEGURIDAD DEL INSTRUMENTO. BENUTZUNG WIRD DAS GERÄT AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN, KANN DIE GERÄTESICHERHEIT BEEINTRÄCHTIGT WERDEN.
Safety Precautions SERVICE SERVICING INSTRUCTIONS ARE FOR USE BY SERVICE - TRAINED PERSONNEL ONLY. TO AVOID DANGEROUS ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO SO. SERVICIO LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO CAPACITADO. PARA EVITAR EL PELIGRO DE DESCARGAS ELÉCTRICAS, NO REALICE NINGÚN SERVICIO A MENOS QUE ESTÉ CAPACITADO PARA HACERIO. WARTUNG ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES GELTEN NUR FÜR GESCHULTES FACHPERSONAL.
Fiber Distributed Antenna System (Fiber DAS) About This Manual This manual covers the operating & maintenance instructions for the following models: Fiber‐DAS Changes to this Manual We have made every effort to ensure this manual is accurate. If you discover any errors, or if you have suggestions for improving this manual, please send your comments to our Solon, Ohio factory. This manual may be periodically updated.
Table of Contents Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Warning Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Caution Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fiber Distributed Antenna System (Fiber DAS) Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 BIU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 ICU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents FOR Application Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Slave FOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Naming Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction The Bird fiber distributed antenna system (Fiber‐DAS) was developed from the start with fiber‐optic cable as the distribution medium. This allows for excellent radio performance and best in class system noise figure of less than 3 dB, from the remote unit antenna port to the base station interface port. The Bird Fiber‐DAS system is a flexible and scalable solution, meaning the system can be tailored for almost any requirement.
Introduction Definitions The following abbreviations, industry standard lingo and acronyms are used in this document. BGW BIU BTS DAS DL Downlink Fiber Fiber‐DAS FOI FOR GSM iDEN LTE MFU ICU QMA RBS RGW RU SC‐APC Single mode fiber SMA Switch Base station Gateway, see "Base Station Gateway (BGW)" on page 4 Base station interface. Also known as the DIU.
Fiber Distributed Antenna System (Fiber DAS) TETRA UL UMTS Uplink SC‐PC SC‐UPC RF WCDMA W‐CDMA 3 Terrestrial Trunked Radio. TETRA uses Time Division Multiple Access (TDMA) with four user channels on one radio carrier and 25 kHz spacing between carriers. See “Uplink” Universal Mobile Telecommunications System is a system where broadband signaling and packeted data are used. The standards are handled in the 3GPP group and the most common type of modulation is WCDMA.
Chapter 2 System Description The Fiber‐DAS system typically consists of three main segments: Gateway — The Gateway acts as a firewall ensuring internal traffic on the system remains internal and at the same time allowing a web interface for monitoring and supervision. The gateway also handles SNMP traps.
Fiber Distributed Antenna System (Fiber DAS) Northbound communication to CGW Includes firewall to protect local net Portal to your Master Unit User‐provided certificate based security via HTTPS Figure 2 Base Station Gateway The BGW has two Ethernet ports ‐ INT and EXT. The INT port is connected to the internal network in the headend’s Master Unit to provide the local network for all the modules and the Remote Units.
System Description Remote Gateway (RGW) The RGW is a small unit similar to the BGW but intended for small systems where there are only a few remotes or where there is no headend. The RGW has a form factor that allows it to be mounted inside a repeater casing. The RGW can be used to run up to 4 Remote Units from a single Repeater on a single Fiber. The RGW has the capability to connect northbound to a CGW, just like the BGW, and it can also forward alarms through a VPN tunnel to a CGW.
Fiber Distributed Antenna System (Fiber DAS) Master Frame Unit (MFU) The Master Frame Unit (MFU) houses the Power Supplies, Base Station Interface Units (BIU), Interconnection Units (ICU), and Fiber‐Optic Interface (FOI) cards. Figure 3 shows an MFU equipped with 3 BIUs, 6 FOIs and one Power Supply. Figure 3 Master Frame Unit Functional description One MFU supports several modules, or combination of module types. The modules can be placed anywhere in the frame.
System Description Base Station Interface Unit (BIU) The Base Station Interface Unit (BIU) is the interface between the operator’s base station and the Fiber‐DAS system. The primary purpose of the BIU is to adjust uplink and downlink signal levels.The BIU is powered from the MFU backplane and communicates via Ethernet with the BGW.
Fiber Distributed Antenna System (Fiber DAS) The BIU has four QMA ports (female type) that are normally used to connect it to an ICU. There are two uplink (input) ports and two downlink (output, TX) ports. These are two separate paths, the isolation between DL 1 and DL 2 ports and the isolation between the UL 1 and UL 2 ports is > 50 dB. There are two separate RF paths in the BIU. The BIU is configured for the specific frequency band it will serve.
System Description The schematic in Figure 6 shows one of the channels in the BIU. The signal detector for the downlink level alarms is shown in the top right corner. The UL1 and UL2 uplink test ports are 3 dB lower than the signal on the corresponding DL/UL BTS port. Figure 6 Schematic of One BIU RF Path Table 4 lists standard cellular BIU’s.
Fiber Distributed Antenna System (Fiber DAS) Table 5 RF and Electrical Performance of the BIU Parameter Table 6 Value Unit Downlink attenuation Settable 10‐30 ± 3 Uplink Gain for modules < 1000 MHz Settable 10 to 20 ± 3 dB dB Uplink Gain for modules > 1000 MHz Settable ‐10 to 10 ± 3 dB IM3 performance > 55 dB Max input non‐destructive > 36 dBm High input alarm threshold level 33 dBm Low input alarm threshold level 10 dBm Input return loss > 20 dB Impedance for all RF ports 5
System Description Figure 7 BIU Interfaces DL/UL BTS 1 DL/UL BTS 1 DL OUT 1 DL OUT 1 TP UL 1 TP UL 1 EXTERNAL ALARM UL IN 1 UL IN 1 DL/UL BTS 2 DL/UL BTS 2 DL OUT 2 DL OUT 2 TP UL 2 TP UL 2 ALM ALM UL IN 2 ON ON UL IN 2 BIU Item DL/UL BTS 1 / 2 TP UL 1/2 DL OUT 1/2 UL IN 1/2 EXTERNAL ALARMS ON/ALM LED BIU Description Connection from the radio base station (RBS). Test port for the uplink of the DL/UL BTS port ‐ 6 dB. The signal will be 3dBm below the DL/UL BTS port.
Fiber Distributed Antenna System (Fiber DAS) Interconnect Unit (ICU) Interconnect units (ICU) are used to couple signals between the BIUs and the FOIs. The functional purpose of the ICU is: Downlink ‐ Split the signal from the BIU and route the balanced signals (minus insertion loss) to the FOIs. Uplink ‐ Combine the signals from the FOIs and route the sum of the signals (minus insertion loss) to the BIU. The RF ports on the ICU are QMA.
System Description Rack-mount ICU (DIU301, DIU302) The Rack‐mount ICU is a 1U unit that contains four fields containing splitters/combiners. Each field is capable of splitting one input into eight outputs or combining eight inputs into one output. Figure 10 Rack-mount ICU Each of the 4 fields has a COMMON port and ports 1‐8.
Fiber Distributed Antenna System (Fiber DAS) Fiber Optic Interface (FOI) unit The FOI converts the RF signals in the downlink to fiber‐optical laser output that is transmitted on the fiber to the remote unit. It also receives the laser light transmitted by the Remote Unit and converts it back to RF signals that are then routed to the ICU and/or BIU.
System Description DOI300 Series FOI The DOI300 series supports a single fiber optic link. The fiber‐optic interface can either be a WDM (DOI302) which is most commonly used or an optional duplex feed with separate UL and DL fibers (DOI301). Bird also offers a WDM option (DOI380x). The WDM utilizes the duplex feed style card but the wavelength for the downlink are defined by the "x" in the DOI380x part number. Note that the Remote Unit will need to be ordered with the correct WDM uplink wavelength.
Fiber Distributed Antenna System (Fiber DAS) Figure 14 FOI Downlink Block Diagram Attenuator 1 Downlink 1 Attenuator 2 Downlink 1 STEP ATT STEP ATT STEP ATT STEP ATT Attenuator 1 Downlink 2 Attenuator 2 Downlink 2 DETECTOR DL IN 1 TP DL DL IN 2 MONITOR TX-LVL LASER DRIVER DETECTOR ETHERNET MODEM OPTO OUT The RF drive levels are measured and accessible in the web interface. TP DL is a test point measurement port for the downlink path.
System Description Figure 16 DOI301/302 Interfaces OPTO IN OPTO IN/OUT OPTO OUT UL OUT 1 UL OUT 1 TP UL TP UL RES RES UL OUT 2 UL OUT 2 DL IN 1 DL IN 1 TP DL TP DL ON ON ALM ALM DL IN 2 DL IN 2 FOI FOI DOI302 With WDM DOI301 Without WDM Item Description OPTO IN/OUT SC‐APC connection for the optical fiber. DOI302 module with built in WDM has a single connector (combined RX/TX). DOI301 module without WDM has two connectors, one for TX and one for RX.
Fiber Distributed Antenna System (Fiber DAS) DOI401Series FOI The DOI401 four port FOI is very similar to DOI302 expect that it has four WDM optical ports instead of one. This allows the user to install dedicated fibers to each Remote Unit without having to balance optical splitter link budgets for each remote in a group. The balanced splitter loss is accounted for in the 7 dBo link budget of the DOI401. Unlike the DOI302, the DOI401 does not require the UL optical signals to be on different wavelengths.
System Description PSU – the rack power supply The Power Supply Unit provides DC power to the Master Unit backplane. The unit is shipped as 240 VAC or 115 VAC units depending on the country. A ‐48 VDC input is offered as an option. Figure 18 PSU DC Power Supply AC Power Supply Functional description The AC power supply can handle up to 16 cards or one chassis full of cards. The DC power supply is capable of handling 11 cards or one full chassis that includes the DC power supply.
Fiber Distributed Antenna System (Fiber DAS) Remote Unit (RU) Remote units are available in a wide range of frequencies, gain and output power to cater to support a variety of requirements. Remote units are also capable of supporting more than one frequency band in a single unit. Chassis types Remote units (RUs) are available in two chassis, a single compact chassis for 1‐2 bands and a dual chassis for up to 4 bands (Figure 19 ).
System Description DDR ETSI standard Bird’s Distributed Radio head is a high performing wideband radio head equipped with a linear power amplifier supporting all modulations. The light weight, convection cooled IP65 chassis secures the performance in almost any environment. Table 17 Table 18 Table 19 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.
Fiber Distributed Antenna System (Fiber DAS) FCC/IC standard Bird’s Distributed Radio head is a high performing wideband radio head equipped with a linear power amplifier supporting all modulations. The light weight, convection cooled IP65 chassis secures the performance in almost any environment. Table 21 Table 22 Table 23 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.
System Description IC RF Exposure — Equipment operating in the Cellular band should be installed and operated with the following minimum distance of between the radiator and your body: LTE 700 MHz (DDR700) 269.0 cm iDEN 800MHz (DDR850) 269.7 cm PCS 1900MHz (DDR1900) 197.3 cm AWS‐1 2100MHz (DDR2100) 171.4 cm AWS‐3 2155MHz (DDRAWS3) 138.6 cm IMT‐E 2600MHz (DDR2600) 166.
Fiber Distributed Antenna System (Fiber DAS) If system will operate on multiple bands, the separation distance required shall be equal to, or greater than, the band with the largest separation distance. IC RF Exposure — Equipment operating in the public safety band should be installed and operated with the following minimum distance of between the radiator and your body: VHF public safety band (DDR‐V) 261.5 cm ‐ This distance must be maintained when a 10.5dBi antenna is used.
System Description DDS Bird's DDS series distributed high power radio head is a high performing wideband radio head equipped with a Pre Distortion power amplifier that supports all modulations. The light weight, convection cooled IP65 chassis secures the performance in almost any environment. FCC/IC Standard Table 26 Table 27 Table 28 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.
Fiber Distributed Antenna System (Fiber DAS) IC RF Exposure — Equipment operating in the Cellular band should be installed and operated with the following minimum distance of between the radiator and your body: LTE 700 MHz 501 cm 850MHz 475 cm PCS 1900MHz 362 cm AWS 2100MHz 351 cm If system will operate on multiple bands, the separation distance required shall be equal to, or greater than, the band with the largest separation distance.
System Description DDH Bird's Distributed High power radio head is a high performing wideband radio head equipped with a feed forward multi carrier power amplifier that supports all modulations. The light weight, convection cooled IP65 chassis secures the performance in almost any environment. ETSI standard Table 30 Table 31 Table 32 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.
Fiber Distributed Antenna System (Fiber DAS) FCC standards Table 34 Table 35 Table 36 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.5 µs Instantaneous Band Width, Max 15 MHz Power Supply Standard Optional 85 – 264 VAC ‐32 to ‐100 VDC Operating Temperature ‐25 to 55 °C (32 to 113 °F) Casing IP65 Specifications DDH100 (Single Band) Power Consumption, max, DDH100 210 W Dimensions, W x D x H 11.8 x 5.1 x 27.6 in. 30 x 13 x 70 cm Weight < 30.
System Description IC RF Exposure — Equipment operating in the Cellular band should be installed and operated with the following minimum distance of between the radiator and your body: 2600 LTE (DDH 2600) 410.1 cm AWS3 (DDHAWS3) 438.4 cm If system will operate on multiple bands, the separation distance required shall be equal to, or greater than, the band with the largest separation distance. The Manufacturer's rated output power of this equipment is for single carrier operation.
Fiber Distributed Antenna System (Fiber DAS) DDU Bird's Distributed High power radio head is a high performing wideband radio head equipped with a feed forward multi carrier power amplifier that supports all modulations. The light weight, convection cooled IP65 chassis secures the performance in almost any environment. FCC standards Table 38 Table 39 Table 40 General Specifications Noise Figure, Typical 3 dB Delay excluding optical fiber < 0.
System Description Remote Unit Frequency Summary Table 42 ETSI Bands Band 3GPP Band UL Frequency DDR Max Composite DL Frequency DDH Max Composite TETRA, Public Safety 380‐385 390‐395 26 33 TETRA, Commercial 410‐415 420‐425 26 33 40 415‐420 425‐430 26 CDMA 450 TETRA, Commercial Band 31 452.5‐457.5 462.5‐467.
Fiber Distributed Antenna System (Fiber DAS) DMU – Remote head end Bird's DMU100 series is a compact head end that can function as a low power repeater or BTS interface. The unit can directly support up to 4 remotes or can fiber feed a Headend Master Unit. Remote access is provided by either the Bird RGW or via Ethernet connection. The unit is a rugged convection cooled, IP65 chassis designed for outdoor locations.
System Description Repeaters Bird Technologies offers a wide variety of repeaters to boost off air signals. The repeated signals can feed passive DAS or can be used as an input into the active DAS. DMR 400 Series Rack Mount Repeater The DMR 400 is designed to fit in the Headend Master Frame along with the BIU and FOI cards.
Fiber Distributed Antenna System (Fiber DAS) Table 44 Table 45 DMR400 Specifications Gain 50‐80 dBm in 1 dB steps Noise Figure ‐ Typical < 5 dB Delay <6 s Dimensions 2 card slots Weight (module) 0.7 kg (1.
System Description DLR 600 Series Low Power Repeater The DLR 600 low power repeater is designed for environments where low signal levels are required. Although small, the unit still offers Bird’s feature rich functions such as self‐oscillation protection, fast AGC, link symmetry functionality, SNMP and remote access via Ethernet or the Bird Remote Gateway.
Fiber Distributed Antenna System (Fiber DAS) DMR600 Series Medium Power Repeater The DMR 600 is a medium power repeater with band selective capabilities.
System Description DHR 800 Series High Power Repeater The DHR 800 offers a high power solution in a light weight, convection cooled IP65 chassis. The unit offers Bird's feature rich functions such as self‐oscillation protection, fast AGC, link symmetry functionality, SNMP and remote access via Ethernet or the Bird Remote Gateway all in a rugged IP65 chassis. Figure 26 DHR 800 Series High Power Repeater The DHR repeater family offers link symmetry settings.
Fiber Distributed Antenna System (Fiber DAS) Table 54 Available Products, Cellular, FCC Band Uplink Downlink Pout, DL & UL Standard DHR807 iDEN 806‐824 851‐869 33(DL)/25(UL) FCC DHR808 Cellular 824‐849 869‐894 33(DL)/25(UL) FCC DHR819 PCS1900 1850‐1915 1930‐1995 33(DL)/25(UL) FCC DHR820 AWS 1710‐1755 2110‐2155 33(DL)/25(UL) FCC Table 55 Available Products, Cellular, ETSI Band DHR801 Uplink TETRA, Public Safety 380‐385 Downlink 390‐395 Pout, DL & UL 26(DL)/20(UL) Standar
Chapter 3 Installation guidelines WARNING This is NOT a consumer device. It is designed for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC licensee to operate this device. You MUST register Class B signal boosters (as defined in 47 CFR 90.219) online at www.fcc.gov/signal‐boosters/registration. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of $100,000 for each continuing violation.
Fiber Distributed Antenna System (Fiber DAS) Cable Routing/Antenna Selection Ensure all cables, e.g. power cable, fiber‐optic cable, Antenna cables are routed and secured in accordance with local/national requirements while avoiding damage to the cables. Antennas and coax cables are selected as part of the DAS system design and may vary with location, frequency, and power level requirements. Use only authorized and approved antennas, cables and/or coupling devices.
Installation guidelines Tools and Material Requirements Fiber Optics All fiber optic cables, including patch cords, must be SINGLE MODE. Multi‐mode fiber is not supported. Bird equipment is designed to be used with only SC/APC fiber connectors. All connection points in the fiber must either be fusion spliced or equipped with APC connectors. UPC connectors anywhere in the fiber path will cause degradation in the performance of the equipment. APC connectors can be identified by their green jacket.
Fiber Distributed Antenna System (Fiber DAS) Installing Headend Equipment All equipment must be properly grounded. Ground peg in the main connector for both head‐end gear (Master Unit) and remote gear (Remote Units) must be connected to Phase, Neutral and Ground in a proper way before power is connected. The chassis of the remote and the rack of the master unit should be grounded to a potential bar or safety grounding bar when operated.
Installation guidelines Master Unit The Master Unit is designed to be installed in a 19" rack. Before installing, consider cable routing for all cards to be installed in the Master Unit. The installer may want to consider horizontal cable managers to be mounted above and below the Master Unit to aid in the installation and ongoing maintenance of the system. Each card in the Master Unit will require an Ethernet connection to the BGW in order to be programmed and monitored.
Fiber Distributed Antenna System (Fiber DAS) Power Supply Unit Bird Technologies offers two different power supplies for the Master Unit: AC (DPU‐301) and DC (DPU‐302). The power supply can be located in a Master Unit other than the one it is powering. Each power supply is shipped with one Molex power supply jumper. If redundant power supplies are required additional power supply jumper(s) will need to be ordered. The power supply uses four slots on the Master Unit.
Installation guidelines PSU DPU-302 The DPU‐302 uses a HAN four prong Heavy Duty Power Connector. The DC to DC DPU‐302 power supply has in input rating of ‐36 VDC to ‐72 VDC. The DPU‐302 requires the installer to provide 18 AWG wire for the HAN 3 A plug kit (Harting P/N 10 20 003 0002) that is provided with the power supply. See Table 59 for connector pinout. The DC power supply can support a single Master Frame Unit with up to 12 cards (BIU, FOI, ICU).
Fiber Distributed Antenna System (Fiber DAS) BIU CAUTION Overdriving the RF source input into the BIU will cause permanent equipment failure and will void the warranty. The installer must ensure that input levels are not exceeded. Plan for maximum power out of the RF source and attenuate accordingly with external attenuators if needed. The BIU serves as the RF interface between the RF source and the ICU/FOI. Each BIU is pre‐set to a frequency band and is not field tunable.
Installation guidelines ICU The ICU is designed to be installed in a 19" rack. The ICU is typically installed directly above or below the Master Unit chassis. Consider post installation changes and testing when selecting a slot to install the ICU. Figure 35 ICU The ICU has QMA connectors. QMA cable kit ‐ Bird part number DCC320 is available for use with the ICU. The kit contains 32 QMA to QMA cables (see Table 60) that can be used to patch between the BIU to the ICU, BIU to the FOI or ICU to FOI.
Fiber Distributed Antenna System (Fiber DAS) RFU The integrated repeater unit, RFU, DMR400 is mounted in the Master Unit chassis. The DMR400 uses two slots in the Master Unit. Figure 37 RFU Connections RF Source Uplink/ Downlink Rebroadcast Powering Up the Head End 1. 2. 3. Apply power to the BGW by pressing the power button on the left side of the unit. The BGW requires approximately 5 minutes to completely boot up.
Installation guidelines Installing Remote Units The remote units are factory configured and should not be opened in the field. WARNING The Remote Units are heavy , use care and always properly support units during installation. If allowed to fall Remote Units can cause injury or death. CAUTION Ensure the surfaces being used to mount Remote Units can safely support the full weight of the remote. The remotes must be mounted in a vertical position.
Fiber Distributed Antenna System (Fiber DAS) Double Remote Unit Wall Mounting Bird Technologies offers a bracket that allows two wall mount racks to be mounted back to back. This reduces the amount of wall space required when two remotes are located together. The bracket is stainless steel and can be used indoors or outdoors.
Installation guidelines Solar Shield Direct exposure to sun light can cause temperatures of the remote to exceed the 55 °C (131°F) rating. A simple solution offered by Bird is to attach an optional solar shield to the affected remotes. The solar shields (p/n DMA301) are sold separately. Figure 41 Remote Unit Solar Shield Cabling There are many options for the Bird remotes which can affect the number of connections on the bottom of each remote.
Fiber Distributed Antenna System (Fiber DAS) Ethernet Port The RJ45 Ethernet port is located on the bottom panel of the remote unit. Connection of the Ethernet port is not required for normal operation of the DAS. The port offers convenient access to the system GUI during installation, commissioning and troubleshooting of the DAS. Ensure the provided IP67 rated protective cap is replaced when the Ethernet port is not in use.
Installation guidelines AC Power Input The Bird remote only comes with an AC input option. The voltage range will support 120VAC or 240VAC, 50 or 60 Hz. The remote ships with a weather proof C13 connector and weather proof strain relief housing. The unit does not ship with a power cord ‐ only the power connector. The installation contractor will need to provide a power cable of at least 14AWG, 3 conductor cable.
Fiber Distributed Antenna System (Fiber DAS) Table 64 External Alarm Connector Pinout Pin 1 2 3 4 5 6 7 8 9 Function Alarm relay output NC Alarm relay output NO Alarm input 4 Alarm input 2 Alarm input ground Alarm relay output NC Alarm relay output NO Alarm input 3 Alarm input 1 Grounding The remotes are furnished with a ground lug to be used if chassis grounding is required to meet local code or installation requirements.
Installation guidelines Installing the DHR Repeater The repeaters units are factory configured and should not be opened in the field. WARNING The Repeaters are heavy , use care and always properly support units during installation. If allowed to fall a Repeater can cause injury or death. CAUTION Ensure the surfaces being used to mount the Repeater can safely support the full weight of the Repeater. The remotes must be mounted in a vertical position.
Fiber Distributed Antenna System (Fiber DAS) Double Repeater Wall Mounting Bird Technologies offers a bracket that allows two wall mount racks to be mounted back to back. This reduces the amount of wall space required when two repeaters are located together. The bracket is stainless steel and can be used indoors or outdoors.
Installation guidelines Solar Shield Direct exposure to sun light can cause temperatures of the repeater to exceed the 55 °C (131°F) rating. A simple solution offered by Bird is to attach an optional solar shield to the affected repeaters. The solar shields are sold separately. Figure 51 Remote Unit Solar Shield Cabling There are many options for the Bird repeaters which can affect the number of connections on the bottom of each repeater.
Fiber Distributed Antenna System (Fiber DAS) Ethernet Port The RJ45 Ethernet port is located on the bottom panel of the repeater unit. Connection of the Ethernet port is not required for normal operation of the repeater. The port offers convenient access to the system GUI during installation, commissioning and troubleshooting. Ensure the provided IP67 rated protective cap is replaced when the Ethernet port is not in use.
Installation guidelines AC Power Input The Bird repeater only comes with an AC input option. The voltage range will support 120VAC or 240VAC, 50 or 60 Hz. The remote ships with a weather proof C13 connector and weather proof strain relief housing. The unit does not ship with a power cord ‐ only the power connector. The installation contractor will need to provide a power cable of at least 14AWG, 3 conductor cable.
Fiber Distributed Antenna System (Fiber DAS) Table 66 External Alarm Connector Pinout Pin 1 2 3 4 5 6 7 8 9 Function Alarm relay output NC Alarm relay output NO Alarm input 4 Alarm input 2 Alarm input ground Alarm relay output NC Alarm relay output NO Alarm input 3 Alarm input 1 Grounding The repeaters are furnished with a ground lug to be used if chassis grounding is required to meet local code or installation requirements.
Chapter 4 DAS Software Configuration This section is focused on the GUI interface and initial software setting of the DAS. No special software is require to access the Bird DAS. Access is provided via most web browsers such as Mozilla Firefox or Google Chrome. The BGW should be powered up and allowed about 5 minutes to fully boot prior to applying power to the Master Unit. The BGW will assign IP addresses to the Master Unit components.
Fiber Distributed Antenna System (Fiber DAS) BGW Configuration BGW Naming 1. 2. 3. 4. Select Configuration in top right corner. See Figure 60 . Select External Comm in left menu. Select BGW Name tab in top menu. Enter site name: a. You may use any combination of alphanumeric characters and the special character of dash "‐". Do not use any other special characters or space. 0 through 9 a through z A through Z ‐ Limit of 56 characters b. 5.
DAS Software Configuration VPN Settings On occasions, the BGW will be set up behind a firewall. To be able to access the BGW from external locations the Primary BGW settings will need to be configured to allow access. Consult with your IT department for these parameters. Bird Technologies offers monitoring services. When these services are contracted, enter the Bird parameters in the Secondary BGW settings so that system alarms are correctly forwarded to the Bird NOC.
Fiber Distributed Antenna System (Fiber DAS) NTP Servers NTP servers provide accurate clocks for the BGW. Utilizing multiple sources prevents clock issues as a result of one server becoming corrupt or dropping out of contact. The BGW is compatible with NTP version 4 servers. The NTP settings in the image below are the default for Redhat servers. 1. 2. 3. 4. 5. Select Configuration. Click Time serv/zone. Select the NTP Servers Tab. Enter the NTP Server information.
DAS Software Configuration Email Server The BGW is capable of emailing alarms directly to select email addresses. Access the set up function via Configuration, Alarm Receivers and Server Prop. Consult with your IT department for configuration settings. 1. Select Configuration. 2. Click Alarm Receivers. 3. Select the Server Prop. Tab. 4. Enter the Email Server information. Consult with your IT department for configuration settings. 5. Click Save and Apply.
Fiber Distributed Antenna System (Fiber DAS) BIU Configuration The initial screen for the BIU provides basic information such as name, serial number, part number and active alarms. The Locate me! button causes an LED to flash on the unit so that the module can be identified in the chassis. In the left menu, notice the RF 1 and RF 2. The BIU has two RF paths or strips that are correlated to the two RF inputs on the BIU card.
DAS Software Configuration Item Description 1 Downlink RMS value leaving the BIU card to the ICU/FOI. Good for measuring GSM and UMTS levels. 2 Downlink log detector signal leaving the BIU card to the ICU/FOI. 3 Peak downlink RF value exiting the BIU card on the select path. 4 0=RF is set to Off (attenuation is set to maximum). 1= RF is set to On. Note: This is only in reference to one of the two BIU RF paths/strips. 5 Temperature of the BIU card.
Fiber Distributed Antenna System (Fiber DAS) BIU RF1 Settings This page will allow the user to change the attenuator values in the BIU for the path selected. Figure 68 BIU RF1 Settings 1 2 3 Item 1 Description Attenuator setting for the downlink path. Enter a value from ‐14 to ‐44 (range varies depending of frequency band). Note: Click Submit after entering value. 2 Attenuator/Gain setting for the uplink path. Enter a value from ‐17 to 12 (range varies depending of frequency band).
DAS Software Configuration BIU Hardware Test Points This page shows various test point measurements used for status and troubleshooting purposes. Figure 69 BIU Hardware Test Points BIU Alarm List This page show all current and past alarms. Green indicates that the alarm has cleared. Yellow indicates a warning alarm. Red indicates a service affecting alarm.
Fiber Distributed Antenna System (Fiber DAS) BIU Change History This page shows a history of all setting changes. Figure 71 BIU Change History BIU Alarm configuration RF1 This page allows for certain alarm thresholds of the BIU to be changed.
DAS Software Configuration BIU Advanced Network Setup This page allows for manual override of network settings. Default configurations should be used with DHCP set to Yes. Note: Changing DHCP to “No” can cause loss of communications to the BIU and should only be used in very specific situations. Figure 73 BIU Network Setup BIU Advanced Menus These menus provide information only status and settings of the BIU that are typically used by the manufacturer.
Fiber Distributed Antenna System (Fiber DAS) BIU Application Handling The application handling page allows for stopping software functions and rebooting software programs. Alarm Handler: Selecting Reboot (circular icon) will clear all the alarms in the history for the card selected. This is helpful after turning a system up and wanting to clear alarm log created during the installation and turn up. Note: Only the Reboot command should be used by the technician.
DAS Software Configuration FOI Configuration The initial screen for the FOI provides basic information such as name, serial number, part number and active alarms. The Locate me! button causes an LED to flash on the unit so that the module can be identified in the chassis. Figure 76 FOI Welcome Screen Figure 77 FOI Welcome Screen SW Version 3.
Fiber Distributed Antenna System (Fiber DAS) FOI Opto Status This page will show the current status and configuration of the FOI. Figure 78 FOI Opto Status 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Item 75 Description 1 Fiber optic received optical power from the remote unit. See item 1 in Figure 79 for measurement location. 2 RF downlink power to the remote. See item 2 in Figure 80 for location on the FOI circuitry.
DAS Software Configuration Figure 79 FOI Uplink Measurement Locations 3 12 CURRENT SENSOR RX-LVL RX POWER 1 DETECTOR 1 ETHERNET MODEM Attenuator Uplink 1 STEP ATT PHOTO DETECTOR OPTO IN UL OUT 1 STEP ATT STEP ATT TP UL Attenuator Common 2 Attenuator Common 1 14 10 11 UL OUT 2 STEP ATT Attenuator Uplink 2 13 DETECTOR RX POWER 2 4 Figure 80 FOI Downlink Measurement Locations 6 7 2 Attenuator 1 Downlink 1 Attenuator 2 Downlink 1 STEP ATT STEP ATT STEP ATT STEP ATT Attenuator 1 D
Fiber Distributed Antenna System (Fiber DAS) Figure 81 FOI Opto Status DOI401 FOI Opto and Attenuator Settings This page will allow changes to be made to the FOI values Figure 82 FOI Opto and Attenuator Settings 1 2 3 4 5 6 7 8 9 10 Item 77 Description 1 Downlink path 1 attenuator #1. See item 1 in Figure 83 for measurement location. 2 Downlink path 1 attenuator #2. See item 2 in Figure 83 for location on the FOI circuitry. 3 Downlink path 2 attenuator #1.
DAS Software Configuration Item Description 8 Uplink path 2 attenuator. See item 8 in Figure 84 for location on the FOI circuitry. RF ON Yes set the UL values as selected above. RF No turns off laser. 9 Note: Setting to “No” will disconnect connectivity to the remote(s) Subcarrier TX Power is used for the communications and control signaling of the DAS. Default setting is ‐10dBm for single port FOI cards and 0dBm for the 4‐port FOI card.
Fiber Distributed Antenna System (Fiber DAS) Figure 85 DOI401 FOI Opto and Attenuator Settings FOI Fiber Network Subunits This page provides a visual indication on the fiber link status for each connection to the FOI. Figure 86 FOI Fiber Network Subunits 1 2 3 Item 79 4 5 6 7 8 Description 1 Selecting the remote link will direct the browser to the Remote Unit page. 2 Network IP address of the FOI card. 3 Optical wavelength of the transmit laser in the FOI card.
DAS Software Configuration Figure 87 DOI401 FOI Fiber Network Subunits FOI Network Setup This page allows for manual override of network settings. Default configurations should be used with DHCP set to Yes. Note: Changing DHCP to “No” can cause loss of communications to the BIU and should only be used in very specific situations. Do not enter IP configuration data in other associated settings.
Fiber Distributed Antenna System (Fiber DAS) FOI Reset to Factory Default To reset the FOI to factory default, carefully press the “Reset” button (see Figure 89 ) for 10 seconds. This is helpful when a card fails to appear in the Configuration menu. Figure 89 FOI Reset Button Reset FOR The initial screen for the FOR provides basic information such as name, serial number, part number and active alarms.
DAS Software Configuration Figure 91 FOR Welcome Screen RF Strip 1 XXX MHz Status Figure 92 FOR RF 1 Status 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Item Description 1 Downlink frequency band for the RF path/strip selected 2 RF link setting for the downlink path: On or Off. 3 Setting of the downlink ALC threshold. 4 Downlink low power alarm turned On or Off. 5 Gain setting for the RF path under review.
Fiber Distributed Antenna System (Fiber DAS) Item Description 7 The amount of actual gain used by the system. Might not achieve max gain setting if ALC is in operation. If the set gain is 56 as it is above, RF is turned on and the actual gain in line 7 is less than 56 then the system is being overdriven and ALC is kicking in. Reduce gain. Suggest starting with the value displayed in line 7 since this is the most gain that is being used. 8 Output power of the amplifier for the path under review.
DAS Software Configuration Item Description 4 Turns downlink low power alarm on or off. 5 Uplink gain setting for RF path under review. Uplink ALC setting for RF path under review. This is the threshold at which the system will start reducing further gain to prevent increases in uplink RF to the FOI. After 10dB decrease in gain an uplink alarm will be triggered 6 7 Note: Should be left a factory default. Only change if FOR uplink gain is changed.
Fiber Distributed Antenna System (Fiber DAS) FOR Opto Status Figure 95 FOR Opto Status 1 2 3 4 5 6 7 8 Item Figure 96 Description 1 Optical power received from the FOI. See item 1 in Figure 96 for measurement location. 2 Uplink signal being fed into the FOR uplink laser circuit. See item 2 in Figure 97 for measurement location. 3 Laser current for the Remote Unit FOR. Should be less than 50mA. 4 Temperature of the Remote Unit FOR board. 5 Total gain of the FOR in the downlink.
DAS Software Configuration Figure 97 FOR Uplink Schematic 2 TX POW LOG DETECTOR 3 RF IN 1 LASER DIODE RF IN 2 OPTO OUT STEP ATT MONITOR DIODE TX-LVL LASER DRIVER ETHERNET MODEM +5 V VOLTAGE -5 V INVERTER TX-CURR TO PHOTO DIODE 86
Fiber Distributed Antenna System (Fiber DAS) FOR Opto Gain and Attenuation Settings Figure 98 FOR Opto Gain Settings 1 2 87 Item Description 1 FOR gain in the downlink path. Range is typically from ‐20 to +20. FOR downlink path has inherent/raw gain of +20dB (FM to 2600MHz). A setting of +20 indicates no attenuation so FOR will have +20dB gain (+20dB gain minus 0dB attenuation).
DAS Software Configuration FOR Fiber Network Settings This page allows for manual override of network settings. Default configurations should be used with DHCP set to Yes. Note: Changing DHCP to “No” can cause loss of communications to the BIU and should only be used in very specific situations. Do not enter IP configuration data in other associated settings. Figure 99 FOR Network Settings 1 2 ITem Description 1 Subcarrier Tx Power is used for the communications and control signaling of the DAS.
Fiber Distributed Antenna System (Fiber DAS) FOR Application Handling The application handling page allows for software reset and rebooting functions. Note: Only the Reboot command should be used by the technician. All other functions should only be used under supervision of Bird engineering as they may cause data corruption if not initiated properly. Figure 101 FOR Application Handling Slave FOR A Slave FOR is when a remote has a second FOR installed.
DAS Software Configuration Naming Components Proper naming of individual components in the DAS is critical to troubleshooting. A recommendation is to start all component names with their function such as "BIU", "FOI" or "FOR". For example: "BIU‐850Sector1". You may use any combination of alphanumeric characters and the special character of dash "‐". Do not use any other special characters or space. 0 through 9 a through z A through Z ‐ Component names are limited to 56 characters. 1.
Fiber Distributed Antenna System (Fiber DAS) Figure 105 Unit Naming 6. 7. 8. Go to Advanced > Appl restart. Select the Reboot icon at the bottom of the menu. See Figure 106 . Select "YES‐ Restart Process" Note: After rebooting, it can take up to 5 minutes before the unit shows up in the GUI. Figure 106 Naming Reboot 9. After all the units have been renamed, go to the Configuration menu and select the correct card type. 10.
DAS Software Configuration Moving Remotes to Different FOI Port All DAS components are assigned IP addresses by the BGW. The FOR in the Remote is the assigned an IP address as a subunit of the FOI to which it is connected. When the Remote is moved to a different FOI one of several actions must take place: 1. The lease on the Remote IP address must be given time to expire. This could take up to 30 minutes. Once the current IP lease expires, the new FOI will then assign the correct IP address to the Remote.
Fiber Distributed Antenna System (Fiber DAS) Figure 107 Manage System Modules 93
Chapter 5 Commissioning Preparations The minimum of preparations necessary are to have the system documentation which should include the following items at least: The system layout and block schematic A connection diagram for the head‐end Master Unit The type of connectors and tappers used to interface to the base station ports The number of carriers for each of the BIU that the base stations connects via Maximum output power for each service from the base stations Fiber losses should
Fiber Distributed Antenna System (Fiber DAS) System Commissioning Pre-requisites Establish Ethernet connection between the BGW and all cards Power up all equipment Ensure IP addresses have been assigned Cards will briefly flash green.
Commissioning Figure 109 Enable FOI Optical Ports Enable FOI Optical Ports 3. Go to FOI status and note RX Opto power UL. The laser transmits at 5000 uW. The difference between the 5000 uW transmit level and the receive level is the loss on the fiber. Figure 110 RX Optical Power RX Optical Power a. Starting with software release 3.9, there is an option to have the GUI calculate the fiber loss. Figure 111 Calculated Optical Loss, Software version 3.
Fiber Distributed Antenna System (Fiber DAS) Uplink 1. 2. 3. 4. 5. 6. Set all values at default (factor setting may vary due to individual testing before shipping) for all bands a. BIU: ‐10dB b. FOI: ‐6, ‐6, ‐6 c. FOR: +12 d. Amp: +35 for low loss fiber, +45 for high loss fiber Start with adjusting the high frequency band. Turn RF on at the BIU. Ensure that only the RF strips being used have RF turned on. Go to the FOR and turn the UL test tone on. Note the level being transmitted and the frequency.
Commissioning 6. 7. 8. Apply RF signal to the BIU BTS port. Check Remote Unit FOR status "Set Gain", "Gain" and "Output Power". Adjust "Set Gain" so that desired output power is achieved. d. If "Gain" level is lower than "Set Gain" level in the status screen then the system is being over driven and ALC is limiting the gain of the system. Reduce gain setting to the level displayed in "Set Gain". Submit change and the review status screen. "Set Gain" and "Gain" levels should now be identical.
Fiber Distributed Antenna System (Fiber DAS) 7. 8. Select the check box next to the 10##.crt file. See Figure 113. Click"Insert" Figure 113 Certificate Selection 7 8 9. Select "Browse" for the File name for certificate key. SeeFigure 114. Figure 114 Key Entry 9 10. Select the check box next to the "10##.key" file. See Figure 115. 11.
Commissioning 12. Select Ext. Ethernet Tab 13. Select the check box for “Use eth0 for Internet (WAN).” This ensures external Ethernet connections are allowed. Figure 116 External Ethernet 12 13 14. Select DNS Forwarders tab. 15. Select radio button for “Dynamic, assigned by eth0.” Note: The Bird maintained CGW is not able to hostname check a DNS2 IP address of 8.8.2.2, 4.2.2.4 or 4.2.25. Please change to something like Google's 8.8.4.4 or 8.8.8.8 Figure 117 DNS Forwarders 14 15 16. 17. 18. 19.
Fiber Distributed Antenna System (Fiber DAS) 20. 21. 22. 23. Click on “Status/Statistics.” Select the “Communication Control” tab. Select the check box next to “VPN Restart.” Click “Restart.” Figure 119 VPN Restart 20 21 22 23 24. After about 10 minutes, the BGW should start communicating with the Bird/DeltaNode CGW. 25. Click on Status/Statistics 26. Select the Ethernet Status tab. Both "eth0" and "eth1" should show connectivity.
Commissioning Wireless Modem Setup Due to variances with different wireless modem manufacturers, settings may vary from modem to modem. A general understanding of network settings is required. Below are a few typical settings that will need to be configured. Modem DHCP DHCP will need to be enabled so that the wireless modem can assign an IP address to the BGW. Be sure to enter the stop and end IP address as seen in the image.
Fiber Distributed Antenna System (Fiber DAS) Figure 123 BGW Configuration - 3G Modem Setup 4 2 3 5 6. 7. Select the VPN Settings tab. Select the “Activate a VPN service tunnel” check box, if not already selected. Note: Older software versions of the BGW do not offer VPN service tunnels. Contact Bird to order a replacement BGW. Figure 124 BGW Configuration - VPN Setting 6 7 8. 9. Select the DNS Forwarders tab. See Figure 125 on page 104.
Commissioning Figure 125 BGW Configuration - DNS Forwarders Setting 8 9 10. 11. 12. 13. Select the Ext. Ethernet tab Select "Use eth0 for internet" and "Static IP address" check boxes. Record the existing IP setting in case rolling back to original settings is required. Enter the IP addresses information: IP Address: 192.168.0.10 Netmask: 255.255.255.0 Gateway IP Address: 192.168.0.1 Figure 126 BGW Configuration - External Ethernet Setting 10 11 13 14.
Fiber Distributed Antenna System (Fiber DAS) Figure 127 BGW Configuration - Ethernet Status 16 15 Rolling Back Modem Configuration If the external modem is no longer required the configuration can quickly be rolled back. 1. Click on Configuration. See Figure 128. 2. Click on External Comm. 3. Select the Ext Ethernet tab. 4. Enter original IP addresses that used prior to installing the modem. Figure 128 Rollback Modem IP Addresses 2 3 1 4 5. 6. Select the DNS Forwarders tab.
Commissioning Setup local Network UDP Ports for CGW Access In order for the Bird/DeltaNode CGW to be able to make contact with the BGW ensure that the customer IT department has OpenVPN with UPD ports 1194 to 1199. This allows Bird/DeltaNode static IP address to access the BGW. Local Connection to Remote Unit A technician can directly connect a laptop to the remote unit. This is useful when the technician is at the remote unit troubleshooting.
Fiber Distributed Antenna System (Fiber DAS) Local Connection to Remote Unit with Two FOR's Some remote units are built with 2 FOR boards. This would occur in applications where one chassis contains: MIMO paths, multiple amplifiers of the same band, amplifiers fed from different FOI cards or other special applications. The 2 FOR boards share the one Ethernet connector on the remote unit. A standard Ethernet cable will only access FOR [0]. A custom cable is required to access FOR [1] board.
Commissioning Figure 132 Custom Cable for Connecting to two FOR systems Top: 12345 678 Front: 12345678 Connection to BGW from Remote Unit The technician has the ability to connect to the BGW from the remote unit. This eases troubleshooting and programming by not having to return to the BGW location for direct access. 1. Enable the laptop DHCP settings. 2. Connect RJ45 Ethernet cable to the Ethernet port on the remote.
Chapter 6 RF Commissioning In order to make the process more clear for this part of the manual we will consider setting up a fictitious system, but based on a standard approach at doing Fiber‐DAS. The system that we are considering will have two frequency bands, let’s assume GSM 900 MHz and UMTS 2100 MHz. The example will have 2 sectors with two remotes in each sector.
RF Commissioning Noise load on Radio Base Station The system will inevitably add some noise to the receiver. When properly set up the noise figure in a system like this will be better than 3 dB. However, if the gain is improperly set up (i.e. not enough gain in the remote, too much gain in the head‐end) it is possible to create a very bad noise figure. In order to avoid this the Fiber‐DAS Calculator should be used to calculate the noise figure of the system in the uplink.
Fiber Distributed Antenna System (Fiber DAS) What we see here is that if we set the system up in this fashion we will desensitize the base station with about 5,5 dB. This can be okay if the base station coverage is only through the Fiber‐DAS system but if the base station is also being used for outdoor coverage it is not good. We need to change the net gain to reflect this. In general we should lower the gain so that we desensitize the BTS only about 3 dB.
RF Commissioning Practical approach Now that we know what we should have we can easily set the system up. You need a spectrum analyzer to do this and it is easiest to connect it into the BIU port. Remember that when you measure here, the signal should also go through the BTS coupler before it reaches the base station receiver port.
Fiber Distributed Antenna System (Fiber DAS) Next step is to connect to the remote unit and set it up for test measurement in the uplink. In this screen you should also turn RF on, set the gain to about 35 dB as a starting point and then turn on the uplink test tone. Note the frequency of the test tone, this is the frequency you should be measuring on your spectrum analyzer.
RF Commissioning Turn on the spectrum analyzer, make sure it is connected to the right port on the right BIU and then find the frequency. A reasonable span is 1 MHz and the receiver band width can be set to 30 kHz or similar. Use the marker to measure the peak of the signal. Then go to the next screen on the remote unit, the RF Status screen. What we are looking for here is the Test tone Level. Note this down as well, next to the frequency of the test tone you noted earlier.
Chapter 7 Model Identification System Model Numbers FOR 2 Band 1 Wavelength FOR 3 FOR 3 Band 1 C 3 H 3 Optical Split Wavelength FOR 2 B 1 2 CWDM FOR 1 Band 2 A D W FOR 1 Band 1 Wavelength FOR 1 WDM G 0 C 0 Connectors Voltage G 0 C 0 Duplexed Frequency Duplexed Frequency Duplexed Frequency Duplexed Frequency Number of Bands Sub-family Product Family D D R 4 W U B C S Family: Frequency: Voltage: Wavelength of Uplink: CWDM (option): DDU - 46 dBm Full Band R - FM Radio DDH -
Model Identification Remote End Unit Part Numbers Note: The remote end units are completely integrated at the factory, there is no field assembly other than mounting and cable connection. Modules should not be altered once deployed.
Fiber Distributed Antenna System (Fiber DAS) 117