EMS Technologies 0A1EKLNK800 EkoLink II 800 User Manual users manual

EMS Technologies EkoLink II 800 users manual

users manual

5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 FCC Part 22 Transmitter Certification Test Report FCC ID: DNY0A1EKLNK800 FCC Rule Part: CFR 47 Part 22 Subpart H ACS Report Number: 05-0457-22H Manufacturer: EMS Wireless Equipment Type: Cellular Booster Remote Model: EkoLink II 800 Installation and Operators Guide
Operator’s Manual EkoLink II Fiber Optic Distributed Antenna System 2850 Colonnades Court Norcross, GA 30071 U. S. A. Tel: +1 770.582.0555 608577-1 Rev A
EMS Wireless Operator’s Manual EkoLink II EMS Wireless EkoLite II Manual 2 Disclaimer Every attempt has been made to make this material complete, accurate, and up-to-date. Users are cautioned, however, that EMS Wireless reserves the right to make changes without notice and shall not be responsible for any damages, including consequential, caused by reliance on the material presented, including, but not limited to, typographical, arithmetical, or listing errors. Copyright Information © EMS Wireless EMS Wireless Norcross, Georgia
EMS Wireless Operator’s Manual EkoLink II 3Warnings, Cautions, and General Notes This product conforms to FCC Part 15, Section 21. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Class B: “NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular 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 the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help.” Warning: Changes or modifications to this device not expressly approved by EMS-Wireless could void the user’s authority to operate the equipment. Industry Canada The following text must be included in a prominent place in the operator’s guide in both English and French: This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Cet appareillage numérique de la classe B répond à toutes les exigences de l'interférence canadienne causant des règlements d'équipement. L'opération est sujette aux deux conditions suivantes: (1) ce dispositif peut ne pas causer l'interférence nocive, et (2) ce dispositif doit accepter n'importe quelle interférence reçue, y compris l'interférence qui peut causer l'opération peu désirée.
EMS Wireless Operator’s Manual EkoLink II 4 Safety Considerations When installing or using this product, observe all safety precautions during handling and operation. Failure to comply with the following general safety precautions and with specific precautions described elsewhere in this manual violates the safety standards of the design, manufacture, and intended use of this product. EMS Wireless Inc. assumes no liability for the customer's failure to comply with these precautions. This entire manual should be read and understood before beginning installation and operation. CAUTION Calls attention to a procedure or practice, which, if ignored, may result in personal injury or may result in damage to the system or system component. Do not perform any procedure preceded by a CAUTION until described conditions are fully understood and met. Electrostatic Sensitivity ESD = ELECTROSTATIC DISCHARGE SENSITIVE DEVICE Observe electrostatic precautionary procedures. Semiconductor laser transmitters and receivers provide highly reliable performance when operated in conformity with their intended design. However, a semiconductor laser may be damaged by an electrostatic charge inadvertently imposed by careless handling. Static electricity can be conducted to the laser chip from the center pin of the RF input connector, and through the DC connector pins. When unpacking and otherwise handling the transmitter, follow ESD precautionary procedures including use of grounded wrist straps, grounded workbench surfaces, and grounded floor mats. If You Need Help If you need additional help in installing or using the system, need additional copies of this manual, or have questions about system options, please contact:
EMS Wireless Operator’s Manual EkoLink II 5 EMS Wireless Customer Support 2850 Colonnades Court Norcross, Georgia 30071 U. S. A. +1 (770) 582-0555 x5310 Service Do not attempt to modify or service any part of this product other than in accordance with procedures outlined in this Operator's Manual. If the product does not meet its warranted specifications, or if a problem is encountered that requires service, notify EMS Wireless's Customer Service Department. Service will be rendered according to EMS Wireless's warranty and repair policy. The product shall not be returned without contacting EMS Wireless and obtaining a return authorization number from the Customer Service Department. When returning a product for service, include the following information: owner, model number, serial number, return authorization number (obtained in advance from EMS Wireless Inc.'s Customer Service Dept.), service required and/or a description of the problem encountered. Warranty and Repair Policy The EMS Wireless Quality Plan includes product test and inspection operations to verify the quality and reliability of our products. EMS Wireless uses every reasonable precaution to ensure that every device meets published electrical, optical and mechanical specifications prior to shipment. Customers are asked to advise their incoming inspection, assembly, and test personnel as to the precautions required in handling and testing ESD sensitive optoelectronic components. These products are covered by the following warranties: General Warranty EMS Wireless warrants to the original purchaser all standard products sold by EMS Wireless to be free of defects in material and workmanship for two (2) years from the date of shipment. During the warranty period, EMS Wireless' obligation, is limited to repair or replacement of any product that EMS Wireless proves to be defective. This warranty does not apply to any
EMS Wireless Operator’s Manual EkoLink II 6product which has been subject to alteration, abuse, improper installation or application, accident, electrical or environmental over-stress, negligence in use, storage, transportation, or handling. Specific Product Warranty Instructions All EMS Wireless products are manufactured to high quality standards and are warranted against defects in workmanship, materials and construction, and to no further extent. Any claim for repair or replacement of a device found to be defective on incoming inspection by a customer must be made within 30 days of receipt of the shipment, or within 30 days of discovery of a defect within the warranty period. This warranty is the only warranty made by EMS Wireless and is in lieu of all other warranties, expressed or implied, except as to title, and can be amended only by a written instrument signed by an officer of EMS Wireless. EMS Wireless sales agents or representatives are not authorized to make commitments on warranty returns. In the event that it is necessary to return any product against the above warranty, the following procedure shall be followed: Return authorization shall be received from the EMS Wireless Customer Support Department prior to returning any device. Advise the EMS Wireless Customer Support Department of the model, serial number, and the discrepancy. The device shall then be forwarded to EMS Wireless, transportation prepaid. Devices returned freight collect or without authorization may not be accepted. Prior to repair, EMS Wireless Customer Support will advise the customer of EMS Wireless test results and will advise the customer of any charges for repair (usually for customer caused problems or out-of-warranty conditions). If returned devices meet full specifications and do not require repair, or if non-warranty repairs are not authorized by the customer, the device may be subject to a standard evaluation charge. Customer approval for the repair and any associated costs will be the authority to begin the repair at EMS Wireless. Customer approval is also necessary for any removal of certain parts, such as connectors, which may be necessary for EMS Wireless testing or repair.
EMS Wireless Operator’s Manual EkoLink II 7Repaired products are warranted for the balance of the original warranty period, or at least 90 days from date of shipment. Limitations of Liabilities EMS Wireless' liability on any claim of any kind, including negligence, for any loss or damage arising from, connected with, or resulting from the purchase order, contract, or quotation, or from the performance or breach thereof, or from the design, manufacture, sale, delivery, installation, inspection, operation or use of any equipment covered by or furnished under this contract, shall in no case exceed the purchase price of the device which gives rise to the claim. EXCEPT AS EXPRESSLY PROVIDED HEREIN, EMS WIRELESS MAKES NO WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, WITH RESPECT TO ANY GOODS, PARTS AND SERVICES PROVIDED IN CONNECTION WITH THIS AGREEMENT INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. EMS WIRELESS SHALL NOT BE LIABLE FOR ANY OTHER DAMAGE INCLUDING, BUT NOT LIMITED TO, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH FURNISHING OF GOODS, PARTS AND SERVICE HEREUNDER, OR THE PERFORMANCE, USE OF, OR INABILITY TO USE THE GOODS, PARTS AND SERVICE. EMS Wireless will not be responsible for loss of output or reduced output of optoelectronic devices if the customer performs chip mounting, ribbon bonding, wire bonding, fiber coupling, fiber connectorization, or similar operations. These processes are critical and may damage the device or may affect the device's output or the fiber output. EMS Wireless test reports or data indicating mean-time-to-failure, mean-time-between-failure, or other reliability date are design guides and are not intended to imply that individual products or samples of products will achieve the same results. These numbers are to be used as management and engineering tools, and are not necessarily indicative of expected field operation. These numbers assume a mature design, good parts, and no degradation of reliability due to manufacturing procedures and processes. This fiber optic laser transmitter contains a class IIIb laser product as defined by the US Department of Health and Human Services, Public Health Service,
EMS Wireless Operator’s Manual EkoLink II 8Food and Drug Administration. This laser product complies with 21 CFR, Chapter I, Subchapter J of the DHEW standards under the Radiation Control for Health and Safety Act of 1968. The laser module certification label is located on the equipment enclosure and it also shows the required DANGER warning logotype (as shown below). The EMS Wireless laser products are used in optical fiber communications systems for radio frequency and microwave frequency analog fiber optic links. In normal operation, these systems are fully enclosed and fully shielded by the hermetically sealed laser metal package. Laser bias current is limited by the internal control circuitry. The transmitters are coupled to glass fiber and have 1310 nm optical output wavelength with typically 0.5 to 20 mW output depending on the model. The optical radiation is confined to the fiber core. Under these conditions, there is no accessible laser emission and hence no hazard to safety or health. Since there is no human access to the laser output during system operation, no special operator precautions are necessary when fiber is connected to the transmitter and receiver. During installation, service, or maintenance, the service technician is warned, however, to take precautions which include not looking directly into the fiber connector or the fiber which is connected to the fiber connector before it is connected to the fiber optic receiver. The light emitted from the fiber optic connector or any fiber connected to the connector is invisible and may be harmful to the human eye. Use either an optical power meter or an infrared viewer or fluorescent screen for optical output verification. All handling precautions as outlined by the FDA and ANSI Z136.2 and other authorities of class IIIb lasers must be observed. Do not attempt to modify or to service this Product. Contact the EMS Wireless Customer Support Department for a return authorization if service or repair is necessary. Disclaimer Every attempt has been made to make this material complete, accurate, and up-to-date. Users are cautioned, however, that EMS Wireless Inc. reserves the right to make changes without notice and shall not be responsible for any damages, including consequential, caused by reliance on the material presented, including, but not limited to, typographical, arithmetical, or listing errors.
EMS Wireless Operator’s Manual EkoLink II 9 INVISIBLE LASER RADIATIONAVOID DIRECT EXPOSURE TO BEAMPEAK POWER 30 mWWAVELENGTH 1300/1550 nmCLASS IIIb LASER PRODUCTTHIS PRODUCT COMPLIES WITH 21 CFRCHAPTER I SUBCHAPTER JDANGER
EMS Wireless Operator’s Manual EkoLink II 10TABLE OF CONTENTS 1.0 Introduction 1.1 System Overview 1.2 Functional Overview 1.2.1 Hub 1.2.2 Fiber 1.2.3 Remote 1.2.4 Antenna 1.2.5 Optional Components 1.2.5.1 AC Power Supply 1.2.5.2 DC Power Supply 1.2.5.3 RF Combiner 2.0 Installation Guide 2.1 Shipment Contents 2.2 Available Options 2.3 Site Selection 2.3.1 Hubs 2.3.2 Remotes 2.4 Pre-Installation 2.5 Power Supply Installation 2.6 Single Hub Installation 2.7 Multiple Hub Installation 2.8 Combiner Installation 2.9 Remote Installation 2.10 System Verification and Initialization 2.10.1 User/Guest Login 2.10.2 Command Structure 2.10.3 Remote Alarm Disabling 2.10.4 Offsets 3.0 Maintenance 3.1 Optical Connector Cleaning 4.0 Specifications 4.1 Link Performance Specifications 4.2 User Requirement Specifications 4.3 Hub Specifications 4.4 AC Power Supply Specifications 4.5 DC Power Supply Specifications 4.6 RF Combiner Specifications
EMS Wireless Operator’s Manual EkoLink II 114.7 Remote Specifications 4.8 Alarm Output Specifications 4.8.1 Internal Alarms 4.8.2 External Alarms 4.8.2.1 Master Hub External Alarm Relays, J26 4.8.2.2 Master Hub External Alarm Relays, J27 5.0 Troubleshooting Guide 5.1 Remote Alarms 5.2 Hub Alarms 5.2.1 Internal Alarms
EMS Wireless Operator’s Manual EkoLink II 12LIST OF FIGURES Figure 1: Typical EkoLink II Application Figure 2: EkoLink II Functional Diagram Figure 3: EkoLink II Hub Front Panel Figure 4: EkoLink II Hub Rear Panel Figure 5: EkoLink II Hub Rear Panel, Left Side Detail Figure 6: EkoLink II Hub Rear Panel, Right Side Detail Figure 7: EkoLink II Remote Unit Block Diagram Figure 8: EkoLink II Remote (Standard Enclosure Configuration) Figure 13: AC Power Supply Rear Panel Figure 14: DC Power Supply Rear Panel Figure 15: DC Power Supply, Front View Figure 16: DC Power Supply, Cabling Detail Figure 17: RF Combiner Rear Panel Figure 18: Application of Alarm Relay Contacts Figure 19: J27 Application, Single Hub Using Internal Supply Voltage Figure 20: J27 Application, OR Configured Hubs using External Supply Voltage
EMS Wireless Operator’s Manual EkoLink II 13Figure A-1: Connection Description in HyperTerminal Figure A-2: HyperTerminal Screen for Direct Connection Figure A-3: Port Settings for Direct Connection and Remote Connection
EMS Wireless Operator’s Manual EkoLink II 14LIST OF TABLES Table 1: Power per Carrier Table Table 2: Link Performance Specifications Table 3: User Requirement Specifications Table 4: EkoLink II Hub Specifications Table 5: EkoLink II AC Power Supply Specifications Table 6: EkoLink II DC Power Supply Specifications Table 7: RF Combiner Specifications Table 8: EkoLink II Remote Specifications Table 9: Hub Alarm Conditions Table 10: J26 Connector Table 11: J27 Connector Table 12: Remote Alarm Conditions Table 13: Hub Alarm Conditions
EMS Wireless Operator’s Manual EkoLink II 151.0 Introduction The system overview describes the need for distributed RF antenna systems in general terms and the concept of a fiber optic repeater system. The functional overview describes the EkoLink II system as it is broken down into its major components. 1.1 System Overview The EkoLink II System is designed to distribute Cellular and PCS radio signals within a building or campus of buildings where coverage/capacity would be otherwise impeded. Using fiber optics to distribute the signals, and a network of local antennas, the coverage area can be greatly enhanced. Correctly installed, the EkoLink II is “transparent” to the service provider while simultaneously greatly enhancing the coverage on the user’s side. One of the key advantages of a fiber optic RF distribution system is that it separates the issues of coverage and capacity. In an alternative system that covers a building by distributing radio base stations, one must add a base station in that area when faced with the problem of poor coverage in one section. Thus, capacity is added to a section which might not need it. Similarly, when faced with a capacity problem in a portion of the building, one would need an additional base station regardless of whether additional coverage is required. Coverage and capacity are two separate problems. With a fiber optic RF distribution system, there are separate solutions to the two separate problems. For poor coverage, an additional fiber optic antenna is added; for an area with insufficient capacity, more base station transceivers are added. In this way, equipment and channels are most efficiently used, and the entire system is more economical. Not only can the fiber optic RF distribution system be used to create uniform coverage throughout the entire building, including stairwells, elevator shafts and garages, regardless of the size and construction, but it enables centralization of the equipment. In the fiber optic RF distribution system, the bulky equipment (such as the base station transceivers, filters, and power supplies) are located in an equipment room, while the antennas are strategically placed for coverage. This factor is especially significant in buildings where aesthetics are key, since it is easier to conceal a small fiber optic antenna than several radios. In addition to the aesthetic advantages of distributed fiberoptic antennas, the overall system cost and complexity is greatly reduced. A typical application for the
EMS Wireless Operator’s Manual EkoLink II 16EkoLink II system would be a multi-floor building such as the one depicted in Figure 1. In buildings of this type it is common to find equipment rooms for Heating, Ventilation and Air-Conditioning (HVAC) and other utilities such as data networking and telephony equipment. There are numerous advantages to centrally located utilities and services and cellular equipment is no exception. Since the fiberoptic antennas cover the entire cellular band and are format independent, they are capable of sending any type of signal throughout the building, whether analog, digital or CDPD, and they can send them all simultaneously. The fibers typically emanate from a source point (small base station) in the building. These fibers run from that source point, piping the signal to many locations throughout the building as shown in Figure 1. PBXto PSTNLANEquipmentMicro BaseStationCDPDMicro BaseStationVOICEEQUIPMENT ROOMFIBERSCombinerFiberoptic RFDistribution Hub Figure 1. Typical EkoLink II Application. Because the capacity is determined by the base station equipment, not the antennas, once a building is wired for RF distribution via fiber optics, capacity and new services can be added without any changes visible to the customer.
EMS Wireless Operator’s Manual EkoLink II 171.2 Functional Overview There are four main components comprising the EkoLink II System: The Hub, the Remote, the Fiber, and the Antenna. Figure 2 is a functional diagram of the EkoLink II system. 1.2.1 Hub The Hub interfaces directly to the service provider’s BTS and is typically located in the equipment or utility room in most installations. It is recommended that the distance from the BTS to the Hub be kept as short as possible to make the EkoLink II “transparent” to the service provider. The Hub is the heart of the system and contains a microprocessor based controller which automatically sets the desired power level for each of the remotes during installation. At the user’s discretion, the power level may be adjusted at each remote according to individual requirements. In most applications, however, the hub will measure the amount of optical loss in each fiber and set the gain accordingly. This greatly reduces the installation and setup time. EkoLink IIHUBRemote1Antenna 1+20 dBm DLRemote2Antenna 2+20 dBm DLRemote3Antenna 3+20 dBm DLRemote4Antenna 4+20 dBm DLBTSUL/DL with WDMUL/DL with WDMUL/DL with WDMUL/DL with WDMULDL Figure 2. EkoLink II functional diagram. In addition to automatically adjusting the initial gain settings, the Hub continuously monitors the operational status of each of the Remote units. If more than one Hub is used, one Hub will be designated the Master Hub and the others will be slaved to that Hub. The Master Hub has a Master controller daughter card which is the chief difference between it and the Slave Hubs.
EMS Wireless Operator’s Manual EkoLink II 18Each EkoLink II Hub can support up to four Remotes. If more than four Remotes are required, up to 3 additional Hubs can be added allowing for a total of 16 Remotes. Front and rear views of the Hub unit are shown in Figures 3, 4, 5, and 6. Figure 3 shows the hub front panel with the uplink and downlink RF connectors (type N female), and the four fiber optic input/output connectors. Figure 4 shows the rear panel. Figure 5 shows detail of the left side of the rear panel, with the connection for the wireline telephone for remote alarming and monitoring, RF Downlink connections to a slave unit, as well as external alarm connections. Figure 6 shows detail of the right side of the rear panel, with RF Uplink and Data connections to a slave unit. Also shown is the DC power connection. Figure 3: EkoLink II Hub Front Panel Plexiglas panel to prevent damage to FO connections Master RS-232C port, used when no Master Control Module is installed DL Connection to BTS UL Connection to BTS
EMS Wireless Operator’s Manual EkoLink II 19 Figure 4: EkoLink II Hub Rear Panel Figure 5: EkoLink II Hub Rear Panel, Left Side Detail Left side, detailed in Fig. 5 Right side, detailed in Fig. 6J26 relay alarm outputs, pin 1 on left; see Sect. 4.8.2 J27 collector alarm outputs, pin 1 on left; see Sect. 4.8.2 DL RF connections to slave hub unit RJ11 modem connections for alarming
EMS Wireless Operator’s Manual EkoLink II 20 1.2.2 Fiber EMS recommends single mode 9/125 µm optical fiber for use in the EkoLink II system. It is also recommended that a high quality SC/APC connector be used to minimize reflections at the mating ends of the fiber. SC/APC connectors are standard on both the Remote and the Hub. All connectors should be thoroughly cleaned prior to each mating and plastic caps used to cover the connectors when not mated. Dust and other contaminants can scratch and permanently damage fiber connectors. The maximum length for a fiber run is a function of the loss within the fiber itself plus some margin for aging and other factors. Figure 6: EkoLink II Hub Rear Panel, Right Side Detail Data I/O for Slave Hubs DC Power Connection RF UL Connections for Slave Hub RS-232 Communications Port
EMS Wireless Operator’s Manual EkoLink II 21The maximum fiber loss (including connectors) for EkoLink II is 5.0 dB. This correlates to roughly 10 km for a typical fiber such as Corning SMF-28. 1.2.3 Remote The remote is designed to convert the Fiber Optic Signals to/from RF and transmit those signals to/from the Hub. Figure 7 is a functional diagram of the EkoLink II remote. EkoLink IIRemote Antenna+20 dBm DLUL/DL with WDM+20 to +48 V DC PowerWDMDLUL1550 nmPADuplexer1310 nm Figure 7: EkoLink II Remote Unit Block Diagram. Each Remote is in an enclosure suitable to the application specific requirements. The standard EkoLink II Remote offering is a 19-inch rack mount configuration as shown in Figure 8.
EMS Wireless Operator’s Manual EkoLink II 22 Figure 8: EkoLink II Remote (standard enclosure configuration). The Antenna port on each of the EkoLink II Remote enclosures is a standard 50 Ω, N-type connector. 1.2.4 Antenna The user supplied antenna is the final element in the EkoLink II system. Any number of antennas may be used so long as it is matched to 50 Ω. 1.2.5 Optional Components The components listed above are mandatory for any EkoLink II system deployment. For added safety, flexibility, and convenience to the installer, several optional components are also offered. The following sections describe some of the more frequently used optional components.
EMS Wireless Operator’s Manual EkoLink II 23 1.2.5.1 AC Power Supply There are two power supply offerings available from EMS Wireless which are specifically designed for deployment in EkoLink II systems. The AC Supply is shown in Figure 13. It has eight outputs for EkoLink II systems. Figure 13: AC Power Supply Rear Panel. 1.2.5.2 DC Power Supply In many telecommunications applications equipment is powered by 48 Volt DC power. If the user desires, or is required to use 48 VDC, EMS offers a DC supply for deployment with the EkoLink II system. This is shown in Figures 14, 15, and 16.
EMS Wireless Operator’s Manual EkoLink II 24 Figure 14: DC Power Supply, Rear View Figure 15: DC Power Supply, Front View 48 VDC outputs for remotes 24 VDC input from BTS
EMS Wireless Operator’s Manual EkoLink II 25 Figure 16: DC Power Supply, Cabling Detail (+) 24 VDC Connection (+) 48 VDC Connection
EMS Wireless Operator’s Manual EkoLink II 26 1.2.5.3 RF Combiner The user desiring to accommodate more than one carrier in an EkoLink II system will require a combiner such as the one depicted in Figure 17. Figure 17: DC Power Supply, Input and Output Connector Formats
EMS Wireless Operator’s Manual EkoLink II 27 Figure 18: RF Combiner Rear Panel. The RF Combiner is installed at the Hub and accommodates two BTS inputs. 2.0 Installation Guide The following guidelines provide a step by step installation procedure which should be followed closely to insure a successful deployment. The photographs in Section 1 should be referred to frequently as the installation proceeds. 2.1 Shipment Contents The following items should be included with each EkoLink II Shipment: Hub(s) Remotes(s) User manual (this document) Software Command Reference Manual AC Power supply (optional) 2.2 Site Selection 2.2.1 Hubs The Hub(s) should be located as close as possible to the donor BTS. Observe all environmental specifications for the hub to avoid damage from moisture, heat, cold, etc. 2.2.2 Remotes Ensure that each remote location is as close as possible to the dedicated antenna(s) it serves. Observe all environmental specifications for the remote to avoid damage from moisture, heat, cold, etc.
EMS Wireless Operator’s Manual EkoLink II 282.3 Pre-installation Prior to installation, a carefully planned system layout should be documented. At a minimum, this document should include the location of the Hub, the location of the Remotes, the Antenna locations, the fiber locations and lengths, and the location of the power supplies for both Hubs and Remotes. The Hub is located at the Building Base Station or BTS. The Hub interfaces with the user's PCS System. The Remote units are distributed in the building and interface to the user’s antennas. Optical fiber cables connect the Hub to the Remote units. The Hub is typically powered by an AC power supply. The AC power supply will power up to eight Remotes. In this section, instructions are provided for organizing the system layout before installation. The installer or operator must make sure that certain requirements have been met before beginning installation. In addition, all cables and fibers must be labeled, and the entire system configuration must be documented. Steps for this pre-installation set-up are given below. Frequent referral to the Functional Overview section of this manual with its detailed photographs will facilitate installation of the system. 1. One optical fiber is required for each Antenna unit; each Hub can connect to up to four Remote units. Angle-polished SC/APC connectorized optical fiber cable must be installed in the building. Any optical connector used between the Hub and the Remote units should be an angle-polished connector specified for return loss >55 dB. Fusion splices to connect fibers are also suitable. Flat polished connectors anywhere along the optical fiber path will degrade the system performance. 2. The customer must provide the following equipment for installation: (a) Optical connector cleaning kit: cotton swabs, alcohol, dust-free compressed air (b) Crimping tool, mating connectors, and pin crimps for the DC electrical connectors and alarm outputs at the Hub. (c) Philips screwdriver (d) Personal computer or laptop with terminal program such as HyperTerminal. (e) Volt Meter 3. Not essential, but useful for diagnostics are the following equipment:
EMS Wireless Operator’s Manual EkoLink II 29(a) RF power meter (b) Optical power meter (c) RF Spectrum analyzer (d) Signal generator 2.4 Power Supply Installation If purchased, install the power supply and connect power to the Hub. The 120 VAC power supply has an on-off switch which is located on the rear of the chassis. This should remain in the off position until the installation is completed. 2.5 Single Hub Installation To Install the Hub, locate it as close as possible to the Service Provider’s BTS. Any distance between the BTS and Hub will result in unnecessary cable losses. It is also very important to ensure that the composite RF Downlink power does not exceed +20 dBm. Table 1 shows the maximum allowable power setting for each carrier to arrive at a composite power of +20 dBm. Number of Carriers Power Per Carrier 1 +20 dBm 2 +17 dBm 3 +15.2 dBm 4 +14 dBm n +20 - [10log(n)] dBm/ch Table 1. Power per carrier table Note that each additional provider requires a reduction in carrier power to maintain the maximum rated input power of +20 dBm. • Using a Philips screwdriver and the provided screws, secure the Hub in a standard 19” equipment rack near the BTS. • Connect the Downlink RF Output from the BTS to the RF Input on the Hub. • Connect the RF Output from the Hub to the BTS Uplink port. • Connect the power to the Hub. • If the modem option was purchased and a dedicated phone line is available, connect the RJ-45 phone jack. • Log onto the Hub as user and follow the system initialization procedures.
EMS Wireless Operator’s Manual EkoLink II 302.6 Multiple Hub Installation For installations requiring more than one Hub, there will be one Hub designated as the Master and the other Hubs will be slaved to the Master. Up to three additional Hubs can be slaved to a single Master Hub. The BTS will only interface to the Master Hub. An optional Master Alarm Controller may be purchased to allow alarms to be reported to an offsite monitoring station. If purchased, the Master Alarm Controller will be factory installed. • Identify the Master Hub and using a Philips screwdriver and the provided screws, secure the Master Hub in a standard 19” equipment rack near the BTS • Install the Slave Hub(s) using a Philips screwdriver and the provided screws, secure the Hub(s) in a standard 19” equipment rack near the Master Hub • Using SMA cables, connect the Slave Downlink Outputs on the rear of the Master Hub to the Slave Downlink Inputs on the Slave Hub(s) • Using SMA cables, connect the Slave Uplink Inputs on the rear of the Master Hub to the Slave Uplink Inputs • If purchased, connect a standard RJ-45 phone cable to the Master Alarm Controller located on the rear of the Master Hub. 2.7 Combiner Installation To install the combiner, locate it as close as possible to the BTS and Hub installation site. All connections should be made with High quality, low loss RF cables with 50 Ω, type N terminations. • Connect the Duplexed BTS Input from service Provider A to the Combiner Port A • Connect the Duplexed BTS Input from service Provider B to the Combiner Port B • Connect the Combined TX Port on the Combiner to the Hub RF Input Port • Connect the Combined RX Port on the Combiner to the Hub RF Output Port 2.8 Remote Installation To install the remote(s), locate it as nearly as possible to the designated antenna. • Mechanically secure the Remote in an equipment rack near the Antenna or in its designated location.
EMS Wireless Operator’s Manual EkoLink II 31• For external antenna use, connect the Antenna to the remote using 50 Ω cable with an N-type connector. • Remove the cover on the Remote fiber connector. Using a dust free air source, clean the fiber connector. • Remove the plastic cover on the fiber and clean the connector tip. • Connect the fiber(s) to the remote. • Ensure that the power switch on the main power supply is in the “off” position and connect the power to the Remote observing the polarity markings. • After power-up, the front panel LED should be Amber for 10 seconds and then turn green (assuming the Hub is connected properly) 2.9 System Verification and Initialization If all the previous steps have been followed carefully, the EkoLink II system is now ready for verification and initialization. Connect to the Hub via serial cable or modem. Note that if no master controller is present, the user will connect to the “HUB RS232” connector located on the rear of each Hub. If the Master Controller module was purchased, the user can connect to the “Master RS232” port located on the front of the Master Hub. The standard terminal settings are: • 9600 Baud • 8 Data bits • 1 Stop bit • No flow control • No Parity If you are unfamiliar with serial communications, please refer to Appendix A for a step by step guide to connecting to the Hub. 1. At the Hub, apply power to the system by turning the power to the “on” position. The Hub LEDs should be green if everything is functioning properly. If any of the LEDs are flashing, there is an alarm condition and you should refer to section 5.0 to troubleshoot the problem.
EMS Wireless Operator’s Manual EkoLink II 322. Note that, any unused ports on the Hub will indicate an alarm condition until the user commands the Hub to ignore those ports. Please refer to the System Initialization section for further details. Each Remote has one alarm LED. When power is first applied to the Remote, its LED will be amber for a period of 10 seconds. After the initial period, the LED will indicate either an alarmed condition or normal operation. A solid green LED indication on the Remote is normal and means that everything is functioning properly. If any of the Remote LEDs are not green, there is an alarm condition. Refer to section 5.0 to troubleshoot the problem. 2.9.1 User/Guest Login When the Hub Controller first powers up, there is a start-up message indicating the firmware release and copyright legends: Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. If the user presses the ENTER key, the login prompt is displayed: Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. Username: There are two basic types of login available to the customer; guest, and user. The guest login is for simple monitoring of the unit; ability to change settings is limited. The user login is for the customer use and allows basic system changes to be made to the module. Note that the login username and password are CASE-SENSITIVE! Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. Username: user Password: **** Access granted to user 2>
EMS Wireless Operator’s Manual EkoLink II 33The last entry “2>” is the prompt indicating the user’s level of privilege. The prompt may be composed of several “reminders”; where a single capital letter indicates a system change. These reminders are as follows: <1> Login privilege level of “guest” <2> Login privilege level of “user” “A” An alarm is active “C” Calibration tables are invalid; the default calibration tables are in use. “F” Settings do not agree with the stored values in flash memory. This is usually the result of a change due to a user’s command setting. All settings are read from the user’s settings in flash on power-up. If the check value does not agree, then the default settings are used. 2.9.2 Command Structure There is an extensive user help menu available to the user and a separate software command reference manual. The basic format for all the commands is: <Primary-Command> <Secondary-Command> = <setting> All commands are made up of this generic format; in some cases, there is no setting or secondary command. The command set is basically a tree diagram, where typing in the primary (and optionally secondary) command with the setting result in a change in the module’s operational parameters. All input is case-insensitive for commands. For example: set laser 1 = on This command would turn the laser #1 on at the present potentiometer setting stored in memory. 2.9.3 Remote Alarm Disabling From the factory, the Hub is programmed to alarm any time a Remote is disconnected from the Hub. This safety feature is designed to indicate such catastrophic events as the fiber to the Remote being cut. For a Hub that does not use all four channels, the unused channels will report an alarm by
EMS Wireless Operator’s Manual EkoLink II 34default. These are false alarms and it will be necessary for the user to disable these unused channels to clear the alarms. The command to disable the unused channels is: 2>set fiber <n> = disabled Where n corresponds to the desired channel. In the event that the wrong channel is inadvertently disabled or a remote is added at a later time the disable channel should be enabled using the following command. 2>set fiber <n> = on where n corresponds to the desired channel. 2.9.4 Offsets Under normal conditions, the factory default power settings are configured to provide +20 dBm output power at each remote. The factory settings will provide optimum performance in most environments; however the user has the option to change the power settings in each remote according to individual requirements. Set an “offset” to the default value for the desired remote. For example, to set remote 1 to +18 dBm type: 2>set remote 1 = -2 The range for the offsets is –10 dB to +0 dB and can only be set in 1 dB increments. In this way, each remote can be tuned to the user’s specific requirements after the system is deployed. To verify the offsets for each remote the following command may be used: 2> get remote n where n is the number of the specific remote offset requested. 3.0 Maintenance The EkoLink II system is designed to be virtually maintenance free for the user.
EMS Wireless Operator’s Manual EkoLink II 35 CAUTION Do Not look directly at the end of an optical connector which emits laser light! The system normally operates without operator intervention. If any unit fails, the line replaceable unit (Remote unit or Hub) should be replaced and the system restored. A failed Remote unit can be removed and replaced with a spare while the rest of the system is operating. A Hub replacement will require temporary loss of signal to its associated Remotes. One of the most important requirements is to maintain clean, undamaged optical interfaces. Any optical connector which is not used must be covered with a protective cap. There are four optical connectors for each Hub and one optical connector for each Remote unit. These connectors are internal to the units and not field serviceable. To ensure that the internal connectors are not inadvertently damaged, just prior to mating an external optical fiber connector to a Transceiver or Remote unit, the external connector should be cleaned as described below. 3.1 Optical Connector Cleaning Before each mating of Fiber Connectors, both connectors should be properly cleaned. The following guidelines provide the user with some basic techniques for maintain good fiber connector integrity. 1. It is very important to maintain clean, scratch-free optical connectors. Whenever an optical cable is removed, place a protective cap over the optical connector at both the cable end and at the Hub or Remote unit. 2. The less frequently Fiber Connectors are handled, the better their integrity. 3. To clean an optical connector, gently wipe the tip of the ferrule with a cotton swab moistened with alcohol, then blow the ferrule dry using dust-free compressed air. 4. The optical connectors for the Hubs and the Remote units are internal, and cannot be cleaned in the field.
EMS Wireless Operator’s Manual EkoLink II 36After the system is installed there should be no need for periodic cleaning of the fiber connectors. 4.0 Specifications The specifications are divided into several sections including: • Link Performance Specifications • User Requirement Specification • Hub Specifications • AC Power Supply Specifications • DC Power Supply Specifications • RF Combiner Specification • Remote Specifications • Alarm Output Specifications 4.1 Link Performance specifications The performance levels shown in Table 2 are for an optical loss budget of 5 dB, which is the typical optical path loss for 10 km optical fiber and a pair of optical connectors. Optical reflection in both directions must be must be less than -40 dB. Otherwise, the overall system performance may be degraded. PARAMETER DOWNLINK UPLINK Passband: PCS DCS (L) DCS (H) Cellular GSM ESMR 1930 to 1990 MHz 1805 to 1855 MHz 1830 to 1880 MHz 869 to 894 MHz 935 to 960 MHz 851 to 869 MHz 1850 to 1910 MHz 1710 to 1760 MHz 1735 to 1785 MHz 824 to 849 MHz 890 to 915 MHz 806 to 924 MHz Optical Budget 5 dB 5 dB Composite RF Input +20 dBm -100 to -55 dBm/ch RF Loss (at 25oC) 0 dB ± 2 dB 0 dB ± 2 dB Response Flatness ± 2 dB ± 2 dB Gain Variation over Temp ± 2 dB ± 2 dB Downlink 2-Tone Output Carrier to 3rd Order Intermodulation >48 dB (RFout/tn = 17 dBm) ≥50 dB (RFin/tn = -58 dBm) Output Carrier to Noise:
EMS Wireless Operator’s Manual EkoLink II 37PARAMETER DOWNLINK UPLINK 30kHz BW 200kHz BW Pout=+9dBm ≥64 dB ≥56 dB --- --- Sensitivity for 200kHz BW for BTS S/N of 9dB --- -98 dBm Sensitivity for 1.25MHz BW for Eb/No of 7dB and 14.4kHz data rate --- -111dBm SFDR in 200kHz BW 53 dB 61 dB Propagation Delay <0.5 µs (RF) + 5 µs/km,typ (fiber) <0.5 µs (RF) + 5 µs/km,typ (fiber) Impedance 50 Ω 50 Ω Input/Output VSWR <1.5:1 <1.5:1 Hub RF Connector N-type N-type Remote RF Connector N-type N-type Optical Connector SC/APC SC/APC Optical Fiber 9/125 µm (core/clad) 1310 nm, singlemode 9/125 µm (core/clad) 1310 nm, singlemode Wavelength 1310 nm 1550 nm Table 2. Link Performance specifications. 4.2 User Requirement Specifications Table 3 shows requirements that the user must satisfy for proper operation of the EkoLink II system. PARAMETER USER REQUIREMENT Max Composite RF Input (damage level) +30 dBm (downlink) +10 dBm (uplink) Max Optical Fiber Length 10 km Optical Fiber 9/125 µm (core/clad) 1310 nm, singlemode Optical Connectors SC/APC Optical Return Loss ≥ 40 dB Number of Optical Fibers One per remote unit Chassis AC Power (factory configured) 90 to 135 VAC or 184 to 264 VAC 50-60 Hz Backup Power Supply +12 VDC ± 0.5 V, 8.5 A max load
EMS Wireless Operator’s Manual EkoLink II 38PARAMETER USER REQUIREMENT (Optional) Ripple < 170 mV pp Remote DC Power 20 - 48 VDC V at 0.4 A Ripple: <170 mV, freq >300 Hz <300 mV, freq <300 Hz Rack Chassis: 3U high, 19" (7.5 cm) wide, 12.84" (32.6 cm) deep 1U (1.75" [4.4 cm]) air space above and below each chassis Temperature Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Max Length Wires to Supply DC Power to Antenna Units (Assuming 22 VDC Power) <2000 ft (<610 meters) with 22 AWG Copper Wire Table 3. User Requirement Specifications. 4.3 Hub Specifications Table 4 is a list of specifications for the EkoLink Hub. PARAMETER USER REQUIREMENT Max Composite RF Input (damage level) +30 dBm (downlink) +10 dBm (uplink) Max Optical Link Loss 5dB Optical Fiber Single Mode Fiber Optical Connectors SC/APC Optical Return Loss ≥ 40 dB Number of Optical Fibers One per remote unit Chassis AC Power (factory configured) 90 to 135 VAC or 184 to 264 VAC 50-60 Hz Backup Power Supply (Optional) +24 VDC ± 0.5 V, 8.5 A max load Ripple < 170 mV pp Hub DC power 20 - 48 VDC at 7.5W Ripple: <170 mV, freq >300 Hz <300 mV, freq <300 Hz Rack Chassis: 3U high, 19" (7.5 cm) wide, 12.84”
EMS Wireless Operator’s Manual EkoLink II 39PARAMETER USER REQUIREMENT (32.6 cm) deep 1U (1.75" [4.4 cm]) air space above and below each chassis Temperature Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Table 4. EkoLink II Hub Specifications 4.4 AC Power Supply Specifications The EkoLink II system is available in AC and DC input power supply options. Shown in Table 5 is a list of specifications for the AC option. PARAMETER SPECIFICATION Input Voltage (factory configured) 90 to 135 VAC or 184 to 264 VAC, 50-60Hz Output Voltage +48 VDC ± 0.5 V Maximum Load 7.8 A Available Continuous Power 375 W at 50oC Efficiency 70% Noise Spikes <170 mV p-p AC Power Plug North America 5-15P 3-pin Remote/Hub power connections 48 VDC ± 0.5 V Dimensions H x W x D 3.47" x 19" x 12.84" (8.8 cm x 48.3 cm x 32.6 cm) Temperature Range Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Table 5. EkoLink II AC Power Supply Specifications.
EMS Wireless Operator’s Manual EkoLink II 404.5 DC Power Supply Specifications Table 6 shows a list of specifications for the DC-DC power supply. The supply requires a 24VDC battery input common to wireless service provider base transceiver stations. PARAMETER SPECIFICATION Input Voltage 24VDC Battery Output Voltage +48 VDC ± 0.5 V Maximum Load 8.5 A Available Continuous Power 375 W at 50oC Efficiency 84% Noise Spikes <170 mV p-p AC Power Plug North America 5-15P 3-pin Remote/Hub power connections 48 VDC ± 0.5 V Dimensions H x W x D 3.47" x 19" x 12.84" (8.8 cm x 48.3 cm x 32.6 cm) Temperature Range Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Table 6. EkoLink II DC Power Supply Specifications 4.6 RF Combiner Specifications The RF Combiner Specifications are listed in Table 7.
EMS Wireless Operator’s Manual EkoLink II 41 PARAMETER SPECIFICATIONS BTS TX Input Power, max +30dBm BTS TX Input Power No Damage +40dBm Combined TX Output Power +20dBm Insertion loss per BTS TX 13dB Isolation - BTS Tx to BTS Tx 45dB Isolation - Tx to Rx, Min 50dB Insertion loss - BTS Rx (single band) < 6dB Insertion loss - BTS Rx (dual band) < 10dB Dimensions 19"L X 12.81"W X 3.47"D (48.3 cm x 32.5 cm x 8.8 cm) Weight (approximate) 10 lbs. (4.5 kg) Temperature Range Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Table 7. RF Combiner Specifications 4.7 Remote specifications Table 8 is a list of specifications for the Standard Remote. PARAMETER SPECIFICATIONS Passband: PCS DCS (L) DCS (H) Cellular GSM ESMR 1930 to 1990 MHz 1805 to 1855 MHz 1830 to 1880 MHz 869 to 894 MHz 935 to 960 MHz 851 to 869 MHz Optical Connectors SC/APC Wavelength Uplink Downlink 1550 nm ± 30 nm 1310 nm ± 30 nm Optical Output Power (at I-Ith = 40 mA) 0 dBm ± 2 dB typical Optical Return Loss > 40 dB LED Indicators Green: Normal Operation Other than Green: Alarm
EMS Wireless Operator’s Manual EkoLink II 42PARAMETER SPECIFICATIONS External DC Power Supply Requirement 20 - 48 V ± 1 V at 0.4 A (Max Ripple: <170 mV pp Dimensions 19"L X 12.84"W X 3.47"D (48.3 cm x 32.6 cm x 8.8 cm) (EkoLink Standard) Weight (approximate) 8 lbs. (3.6 kg) (Standard Enclosure) Max Uplink RF Input Power -10 dBm Max (no damage) Downlink RF Output Power +20 dBm (normal operation) Temperature Range Performance to Full Spec Operating Storage Relative Humidity Operating Short Term 5oC to 40oC 0oC to 50oC -20oC to 65oC 20 to 55% 10 to 80% (not exceeding 0.024 lbs water/dry air) Table 8. EkoLink II Remote Specifications 4.8 Alarm Output Specifications The Hub has both Internal and External Alarming capability. The following paragraphs describe these alarms in detail. 4.8.1 Internal Alarms The Internal Hub Alarms are described in Table9. Alarm Description LED Indication CPU Temperature Alarm All Flashing Red Optical Receiver <n>: Low Power Detected when ON Solid Red Optical Receiver <n>: Power Detected when OFF Solid Red Remote <n> Failure Detected Flashing Amber Hub Laser <m> Failure Detected Flashing Amber (4) InterHUB Alarm is ACTIVE (None) External-1 Alarm is ACTIVE (None) External-2 Alarm is ACTIVE (None) No Alarm Solid Green
EMS Wireless Operator’s Manual EkoLink II 43Table 9. Hub Alarm Conditions. The user may also log into the Hub and, using the Alarm command, diagnose the alarm conditions. 4.8.2 External Alarms Frequently the user may desire to interface alarms in the EkoLink II system with a BTS or other systems. For this purpose, user configurable alarm outputs are accessed using J26 and J27 found on the rear panel of the EkoLink II Hub. 4.8.2.1 Master Hub External Alarm Relays, J26 Connector J26 supplies the user with relay contacts for custom alarm configurations defined by the customer requirements. The dry contact relay outputs are only available in the Master Hub with a Master Hub Controller option installed. J26 pin descriptions are shown in Table 10. Contact current should be limited to 2 Amps or less. Pin Signal Description 1 ALARM-1-NO Alarm Relay #1 Normally-Open 2 ALARM-1-C Alarm Relay #1 Contact 3 ALARM-1-NC Alarm Relay #1 Normally-Closed 4 ALARM-2-NO Alarm Relay #2 Normally-Open 5 ALARM-2-C Alarm Relay #2 Contact 6 ALARM-2-NC Alarm Relay #2 Normally-Closed Table 10. J26 Connector A typical application circuit can be seen in Figure 10.
EMS Wireless Operator’s Manual EkoLink II 44CCNCNCNONOPin 1: ALARM-1-NOJ26Pin 2: ALARM-1-CPin 3: ALARM-1-NCPin 4: ALARM-2-NOPin 5: ALARM-2-CPin 6: ALARM-2-NCAlarm 1Alarm 2Green Light (No Alarm Indicator)Red Light (Alarm Indicator)Typical application circuitsAudible Buzzer (Alarm Indicator)General Circuit Topology2 Amp Max Load Current Figure 18: Application of Alarm Relay Contacts 4.8.2.2 Master Hub External Alarm Connections, J27 Connector J27 provides user configurable external alarm connections. J27 alarm outputs are available on all EkoLink II Hubs with or without a master control module. Pin definitions for connector J27 can be seen in Table 11. Pin Signal Description 1 V-ALARM +5 Volts Output for alarm 2 ALARM-OC Open-Collector Alarm Output 3 GND Signal Ground 4 Not Connected <No connection> 5 EXT-ALARM-1-IN TTL Alarm Input #1 6 EXT-ALARM-2-IN TTL Alarm Input #2 Table 11. J27 Connector The alarm output can be driven using the internal voltage supplied by pin 1. This can be seen in Figure 11.
EMS Wireless Operator’s Manual EkoLink II 45 Alarm N/CPin 1: V-ALARMPin 2: ALARM-OCPin 3: GNDPin 4: Not ConnectedPin 5: EXT-ALARM-1-INPin 6: ALARM-2-NC+5VDCuContJ27General Circuit Topology Typical Application CircuitR** - Use R to limit currentto 20mA Figure 19. J27 Application, Single Hub using internal supply voltage. The Hubs may also be configured in an OR configuration as seen in Figure 12. External alarm circuitry must be current limited to 20mA. Alarm N/CPin 1: V-ALARMPin 2: ALARM-OCPin 3: GNDPin 4: Not ConnectedPin 5: EXT-ALARM-1-INPin 6: ALARM-2-NC+5VDCuContJ27General Circuit TopologyTypical Application CircuitR** - Use R to limit currentto 20mAAlarm Voltage sense line pulledlow in alarm conditionAlarm N/CPin 1: V-ALARMPin 2: ALARM-OCPin 3: GNDPin 4: Not ConnectedPin 5: EXT-ALARM-1-INPin 6: ALARM-2-NC+5VDCuContJ27General Circuit TopologyAlarm N/CPin 1: V-ALARMPin 2: ALARM-OCPin 3: GNDPin 4: Not ConnectedPin 5: EXT-ALARM-1-INPin 6: ALARM-2-NC+5VDCuContJ27General Circuit TopologyAlarm N/CPin 1: V-ALARMPin 2: ALARM-OCPin 3: GNDPin 4: Not ConnectedPin 5: EXT-ALARM-1-INPin 6: ALARM-2-NC+5VDCuContJ27General Circuit Topology Figure 20. J27 Application, OR Configured Hubs using external supply voltage.
EMS Wireless Operator’s Manual EkoLink II 465.0 Troubleshooting Guide The chief indicator of a failure is the Status LED located on each of the Remotes and the Hub. The user can ascertain the nature of the failure by either logging into the Hub and invoking the Alarm command or by using Tables 12 and 13 below. Under normal operating conditions, these LEDs will be solid green. If an alarm condition occurs, the LEDs will indicate the nature of the failure and assist the user in deciding on a coarse of action. It is recommended that, before taking any corrective measures, or disconnecting either the Remote or Hub units, the user ascertain the exact nature of the alarm by referring to the tables below. 5.1 Remote Alarms The Hub LEDs will indicate when an alarmed condition exists at one of the remotes. To ascertain the nature of a failure, observe both the Remote LED and the Hub LEDs and compare them to Table 12 below. Alarm Description Remote LED Indication Hub LED Indication RF Uplink Pre-Amp Failure Alarm Flashing Red Flashing Red RF Uplink AGC-Amp Failure Alarm Flashing Red Flashing Red RF Uplink Post-Amp Failure Alarm Flashing Red Flashing Red CPU Temperature Alarm Flashing Amber Flashing Red Remote Laser Failure Alarm Solid Amber Solid Red Remote Laser Feedback Alarm Solid Amber Flashing Red Optical Receive Power Alarm Solid Red Flashing Red RF Overdrive Alarm Flashing Red Flashing Red No Alarm Solid Green Solid Green RF Downlink Power Alarm Flashing Red Flashing Red Table 12. Remote Alarm Conditions After noting the type of alarm, the failed unit should be replaced. 5.2 Hub Alarms The Hub has both Internal and External Alarming capability. The following paragraphs describe these alarms in detail.
EMS Wireless Operator’s Manual EkoLink II 475.2.1 Internal Alarms The Internal Hub Alarms are described in Table 13. Alarm Description LED Indication CPU Temperature Alarm All Flashing Red Optical Receiver <n>: Low Power Detected when ON Solid Red Optical Receiver <n>: Power Detected when OFF Solid Red Remote <n> Failure Detected Flashing Amber Hub Laser <m> Failure Detected Flashing Amber (4) InterHUB Alarm is ACTIVE (None) External-1 Alarm is ACTIVE (None) External-2 Alarm is ACTIVE (None) RF Downlink Power Alarm Flashing Red No Alarm Solid Green Table 13. Hub Alarm Conditions. The user may also log into the Hub and, using the Alarm command, diagnose the alarm conditions.
EMS Wireless Operator’s Manual EkoLink II 48APPENDIX A Terminal Communications The EkoLink II can be configured and monitored via direct serial RS-232 connection. The following paragraphs describe in detail how to connect to the Hub. Direct Terminal Connection The EkoLink II Hub can be controlled via standard RS232 Communications port located on the front of the Hub chassis. A laptop computer is recommended for system setup and verification. If a laptop is unavailable, a standard Personal Computer may be used but the serial cable connection must be kept less than 10 feet. Connect a serial cable form the laptop to the Hub and run your favorite terminal program. The standard terminal settings are: • 9600 Baud • No Parity • 1 Stop bit HyperTerminal Configuration HyperTerminal is a common communications program included with Microsoft Windows operating systems. Windows 95 and all newer versions of Windows has this software which can be used to initialize the EkoLink II. Following is a step-by-step guide to configuring the software to communicate with your Hub controller. 1. In the Start menu, open the Programs folder. Navigate to the Accessories folder and then the Communications folder. 2. Select the HyperTerminal icon.
EMS Wireless Operator’s Manual EkoLink II 493. A dialog box will ask you to name the session. Use any name you choose. For this example, the name EkoLink II was used. Select the icon showing the two telephones as shown in Figure A-1. Figure A-1. Connection Description in HyperTerminal 4. For a direct connection to the repeater, choose “Direct to Com X” in the drop down box in Figure A-2. Figure A-2. HyperTerminal Screen for Direct Connection.
EMS Wireless Operator’s Manual EkoLink II 505. After clicking OK, you will need to choose “Port Settings.” Select: • Bits per Second: 9600 • Data bits: 8 • Parity: None • Stop bits: 1 • Flow control: None Figure A-3. Port Settings for Direct Connection and Remote Connection The port settings will be the same for direct connection and remote connection, except for the flow control. For a direct connection to the repeater, make sure flow control is set to “None.”
Installation Guide EkoLink II Fiber Optic Distributed Antenna System 2850 Colonnades Court Norcross, GA 30071 U. S. A. Tel: +1 770.582.0555 Fax +1 770.729.0075608577-2 Rev A 7 August 2003
EMS Wireless Operator’s Manual EkoLink II 21.0 Installation Guide The following guidelines provide a step by step installation procedure which should be followed closely to insure a successful deployment. 1.1 Shipment Contents The following items should be included with each EkoLink II Shipment: Hub(s) Remotes(s) User manual (this document) Software Command Reference Manual AC Power supply (optional) 1.2 Site Selection 1.2.1 Hubs The Hub(s) should be located as close as possible to the donor BTS. Observe all environmental specifications for the hub to avoid damage from moisture, heat, cold, etc. 1.2.2 Remotes Ensure that each remote location is as close as possible to the dedicated antenna(s) it serves. Observe all environmental specifications for the remote to avoid damage from moisture, heat, cold, etc. 1.3 Pre-installation Prior to installation, a carefully planned system layout should be documented. At a minimum, this document should include the location of the Hub, the location of the Remotes, the Antenna locations, the fiber locations and lengths, and the location of the power supplies for both Hubs and Remotes. The Hub is located at the Building Base Station or BTS. The Hub interfaces with the user's PCS System. The Remote units are distributed in the building and interface to the user’s antennas. Optical fiber cables connect the Hub to the Remote units. The Hub is typically powered by an AC power supply. The AC power supply will power up to eight Remotes.
EMS Wireless Operator’s Manual EkoLink II 3In this section, instructions are provided for organizing the system layout before installation. The installer or operator must make sure that certain requirements have been met before beginning installation. In addition, all cables and fibers must be labeled, and the entire system configuration must be documented. Steps for this pre-installation set-up are given below. Frequent referral to the Functional Overview section of the Operator’s Manual with its detailed photographs will facilitate installation of the system. 1. One optical fiber is required for each Antenna unit; each Hub can connect to up to four Remote units. Angle-polished SC/APC connectorized optical fiber cable must be installed in the building. Any optical connector used between the Hub and the Remote units should be an angle-polished connector specified for return loss >55 dB. Fusion splices to connect fibers are also suitable. Flat polished connectors anywhere along the optical fiber path will degrade the system performance. 2. The customer must provide the following equipment for installation: (a) Optical connector cleaning kit: cotton swabs, alcohol, dust-free compressed air (b) Crimping tool, mating connectors, and pin crimps for the DC electrical connectors and alarm outputs at the Hub. (c) Philips screwdriver (d) Personal computer or laptop with terminal program such as HyperTerminal. (e) Volt Meter 3. Not essential, but useful for diagnostics are the following equipment: (a) RF power meter (b) Optical power meter (c) RF Spectrum analyzer (d) Signal generator 1.4 Power Supply Installation If purchased, install the power supply and connect power to the Hub. An on-off switch is located in the rear of the chassis and should remain in the off position until the installation is completed. Before connecting the Hub or Remotes to the power supply, apply AC power to the supply and verify the 48 V output with a Volt meter.
EMS Wireless Operator’s Manual EkoLink II 41.5 Single Hub Installation To Install the Hub, locate it as close as possible to the Service Provider’s BTS. Any distance between the BTS and Hub will result in unnecessary cable losses. It is also very important to ensure that the composite RF Downlink power does not exceed +20 dBm. Table 1 shows the maximum allowable power setting for each carrier to arrive at a composite power of +20 dBm. Number of Carriers Power Per Carrier 1 +20 dBm 2 +17 dBm 3 +15.2 dBm 4 +14 dBm n +20 - [10log(n)] dBm/ch Table 1. Power per carrier table Note that each additional provider requires a reduction in carrier power to maintain the maximum rated input power of +20 dBm. • Using a Philips screwdriver and the provided screws, secure the Hub in a standard 19” equipment rack near the BTS. • Connect the Downlink RF Output from the BTS to the RF Input on the Hub. • Connect the RF Output from the Hub to the BTS Uplink port. • Connect the power to the Hub. • If the modem option was purchased and a dedicated phone line is available, connect the RJ-45 phone jack. • Log onto the Hub as user and follow the system initialization procedures. 1.6 Multiple Hub Installation For installations requiring more than one Hub, there will be one Hub designated as the Master and the other Hubs will be slaved to the Master. Up to three additional Hubs can be slaved to a single Master Hub. The BTS will only interface to the Master Hub. An optional Master Alarm Controller may be purchased to allow alarms to be reported to an offsite monitoring station. If purchased, the Master Alarm Controller will be factory installed. • Identify the Master Hub and using a Philips screwdriver and the provided screws, secure the Master Hub in a standard 19” equipment rack near the BTS
EMS Wireless Operator’s Manual EkoLink II 5• Install the Slave Hub(s) using a Philips screwdriver and the provided screws, secure the Hub(s) in a standard 19” equipment rack near the Master Hub • Using SMA cables, connect the Slave Downlink Outputs on the rear of the Master Hub to the Slave Downlink Inputs on the Slave Hub(s) • Using SMA cables, connect the Slave Uplink Inputs on the rear of the Master Hub to the Slave Uplink Inputs • If purchased, connect a standard RJ-45 phone cable to the Master Alarm Controller located on the rear of the Master Hub. 1.7 Combiner Installation To install the combiner, locate it as close as possible to the BTS and Hub installation site. All connections should be made with High quality, low loss RF cables with 50 Ω, type N terminations. • Connect the Duplexed BTS Input from service Provider A to the Combiner Port A • Connect the Duplexed BTS Input from service Provider B to the Combiner Port B • Connect the Combined TX Port on the Combiner to the Hub RF Input Port • Connect the Combined RX Port on the Combiner to the Hub RF Output Port 1.8 Remote Installation To install the remote(s), locate it as nearly as possible to the designated antenna. • Mechanically secure the Remote in an equipment rack near the Antenna or in its designated location. • For external antenna use, connect the Antenna to the remote using 50 Ω cable with an N-type connector. • Remove the cover on the Remote fiber connector. Using a dust free air source, clean the fiber connector. • Remove the plastic cover on the fiber and clean the connector tip. • Connect the fiber(s) to the remote. • Ensure that the power switch on the main power supply is in the “off” position and connect the power to the Remote observing the polarity markings. • After power-up, the front panel LED should be Amber for 10 seconds and then turn green (assuming the Hub is connected properly)
EMS Wireless Operator’s Manual EkoLink II 61.9 System Verification and Initialization If all the previous steps have been followed carefully, the EkoLink II system is now ready for verification and initialization. Connect to the Hub via serial cable or modem. Note that if no master controller is present, the user will connect to the “HUB RS232” connector located on the rear of each Hub. If the Master Controller module was purchased, the user can connect to the “Master RS232” port located on the front of the Master Hub. The standard terminal settings are: • 9600 Baud • 8 Data bits • 1 Stop bit • No flow control • No Parity If you are unfamiliar with serial communications, please refer to Appendix A of the Operator’s Manual for a step by step guide to connecting to the Hub. 1. At the Hub, apply power to the system by turning the power to the “on” position. The Hub LEDs should be green if everything is functioning properly. If any of the LEDs are flashing, there is an alarm condition and you should refer to the Operator’s Manual to troubleshoot the problem. 2. Note that, any unused ports on the Hub will indicate an alarm condition until the user commands the Hub to ignore those ports. Please refer to the System Initialization section of the Operator’s Manual for further details. Each Remote has one alarm LED. When power is first applied to the Remote, its LED will be amber for a period of 10 seconds. After the initial period, the LED will indicate either an alarmed condition or normal operation. A solid green LED indication on the Remote is normal and means that everything is functioning properly. If any of the Remote LEDs are not green, there is an alarm condition. Refer to the Operator’s Manual to troubleshoot the problem. 2.9.1 User/Guest Login
EMS Wireless Operator’s Manual EkoLink II 7When the Hub Controller first powers up, there is a start-up message indicating the firmware release and copyright legends: Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. If the user presses the ENTER key, the login prompt is displayed: Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. Username: There are two basic types of login available to the customer; guest, and user. The guest login is for simple monitoring of the unit; ability to change settings is limited. The user login is for the customer use and allows basic system changes to be made to the module. Note that the login username and password are CASE-SENSITIVE! Hub Controller Program V0.99 [Build 04Oct02] Copyright (c) 2002, EMS-Technologies, Inc. Username: user Password: **** Access granted to user 2> The last entry “2>” is the prompt indicating the user’s level of privilege. The prompt may be composed of several “reminders”; where a single capital letter indicates a system change. These reminders are as follows: <1> Login privilege level of “guest” <2> Login privilege level of “user” “A” An alarm is active “C” Calibration tables are invalid; the default calibration tables are in use. “F” Settings do not agree with the stored values in flash memory. This is usually the result of a change due to a user’s command setting. All settings are read from the user’s settings in
EMS Wireless Operator’s Manual EkoLink II 8flash on power-up. If the check value does not agree, then the default settings are used. 2.9.2 Command Structure There is an extensive user help menu available to the user and a separate software command reference manual. The basic format for all the commands is: <Primary-Command> <Secondary-Command> = <setting> All commands are made up of this generic format; in some cases, there is no setting or secondary command. The command set is basically a tree diagram, where typing in the primary (and optionally secondary) command with the setting result in a change in the module’s operational parameters. All input is case-insensitive for commands. For example: set laser 1 = on This command would turn the laser #1 on at the present potentiometer setting stored in memory. 2.9.3 Remote Alarm Disabling From the factory, the Hub is programmed to alarm any time a Remote is disconnected from the Hub. This safety feature is designed to indicate such catastrophic events as the fiber to the Remote being cut. For a Hub that does not use all four channels, the unused channels will report an alarm by default. These are false alarms and it will be necessary for the user to disable these unused channels to clear the alarms. The command to disable the unused channels is: 2>set fiber <n> = disabled Where n corresponds to the desired channel. In the event that the wrong channel is inadvertently disabled or a remote is added at a later time the disable channel should be enabled using the following command. 2>set fiber <n> = on
EMS Wireless Operator’s Manual EkoLink II 9where n corresponds to the desired channel. 2.9.4 Offsets Under normal conditions, the factory default power settings are configured to provide +20 dBm output power at each remote. The factory settings will provide optimum performance in most environments; however the user has the option to change the power settings in each remote according to individual requirements. Set an “offset” to the default value for the desired remote. For example, to set remote 1 to +18 dBm type: 2>set remote 1 = -2 The range for the offsets is –10 dB to +0 dB and can only be set in 1 dB increments. In this way, each remote can be tuned to the user’s specific requirements after the system is deployed. To verify the offsets for each remote the following command may be used: 2> get remote n where n is the number of the specific remote offset requested.

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