Installation Guide Copyright 1999 Preliminary Document
LitennaTM Installation Guide Installation Guide Foxcom Wireless Ltd. Ofek One Center Building B Lod, Israel 71293 Tel: +972-8-918-3888 Fax: +972-8-918-3844 Foxcom Wireless Inc. 8150 Leesburg Pike, Suite 600 Vienna, VA 22182 Tel: 703-848-0200 Fax: 703-848-0280 website: www.foxcomwireless.com email: sales@foxcomwireless.com This manual contains PROPRIETARY and CONFIDENTIAL information of Foxcom Wireless.
Litenna Installation Guide Table of Contents Table of Contents Front Chapter................................ ................................ ................................ ...................... 6 Policy for Warranty and Repair................................ ................................ .......................... 6 Reporting Defects................................ ................................ ................................ .............. 8 Conventions................................ .......
Table of Contents Litenna Installation Guide Base Unit and Remote Hub Unit Connections ................................ ................................ .. 42 Maintenance / Mechanical Adjustment................................ ................................ ............ 43 Troubleshooting................................ ................................ ................................ ................. 43 Appendix A Link Measurements Form................................ ................................
Litenna Installation Guide Table of Contents List of Tables Table 1 – LitennaTM Models................................ ................................ ................................ . 10 Table 2 – Required Equipment List................................ ................................ ...................... 15 Table 3 - Fiber Installation Parts List ................................ ................................ ................... 24 Table 4 - Fiber Installation Labor List .........................
Litenna Installation Guide Front Chapter Front Chapter Policy for Warranty and Repair Foxcom Wireless tests and inspects all its products to verify their quality and reliability. Foxcom Wireless uses every reasonable precaution to ensure that each unit meets their declared specifications before shipment. Customers should advise their incoming inspection, assembly, and test personnel about the precautions required in handling and testing our products. Many of these precautions can be found in this manual.
Litenna Installation Guide Front Chapter 3) Returns In the event that it is necessary to return any product against above warranty, the following procedure shall be followed: a. Return authorization is to be received from Foxcom Wireless prior to returning any unit. Advise Foxcom Wireless of the model, serial number, and discrepancy. The unit may then be forwarded to Foxcom Wireless, transportation prepaid. Devices returned collect or without authorization may not be accepted. b.
Litenna Installation Guide Front Chapter Reporting Defects The units were inspected before shipment and found to be free of mechanical and electrical defects. Examine the units for any damage which may have been caused in transit. If damage is discovered, file a claim with the freight carrier immediately. Notify Foxcom Wireless as soon as possible. Refer to Policy for Warranty and Repair for further details. Note Keep all packing material until you have completed the inspection.
Litenna Installation Guide Front Chapter Equipment Safety To avoid damaging your product, please observe the following: 1. Always keep the optical connector covered. Use the fiberoptic cable or a protective cover. Do not allow any dirt and/or foreign material to get on the optical connector bulkheads. 2. The optical fiber jumper cable bend radius is 3 cm. Smaller radii can cause excessive optical loss and/or fiber breakage. Foxcom Wireless Proprietary Information Document No.
Litenna Installation Guide Introduction to Litenna Introduction to Litenna The LitennaTM, a high performance fiberoptic In-Building RF Distribution System, allows cellular & PCS services to be extended into shadow areas. With LitennaTM services can be cost-effectively broadened into BTS, micro and pico cell markets, such as airports, buildings, underground parking and shopping malls.
Litenna Installation Guide Introduction to Litenna Features The LitennaTM series features the following: 1. Wide DC input range. 2. Slow start optical power control protects the laser from DC transients upon turn-on. 3. Alarm Interface with open collector and dry contact alarms – the alarm loopback is activated when there is a broken or faulty optical fiber, or no power in system. 4. LEDs that indicate status of individual optical links and sets of links.
Litenna Installation Guide Introduction to Litenna Product Drawings The following drawings show sample front and rear panels of the Litenna™ units.
Litenna Installation Guide Introduction to Litenna Figure 4 - Base Unit 8 ports Figure 5 - Base Unit Front Panels 8 ports Figure 6 - Base Unit Back Panels 8 ports Foxcom Wireless Proprietary Information Document No.
Litenna Installation Guide Introduction to Litenna SMA or N-Type connectors Available Figure 7 - Remote Hub Unit E xte rn al C ellula r A n ten na La ser O utp ut to B ase U nit O ptica l In put from B ase U nit F RO M B A S E O P T. PORT 1 PORT 2 PORT 3 TO BASE DC PORT 4 1 8 -4 8 V D C P O W E R IN P U T A N TE N N A P O R T S D C Po w e r Figure 8 - Remote Hub Unit Front Panel 14 Document No.
Litenna Installation Guide Required Equipment Required Equipment The following describes the equipment required for testing the system at setup.
Litenna Installation Guide Required Equipment Test Procedures This section explains the following test procedures: • Pre RF Test • Flatness Test • Gain/IP3 Test • Uplink Network Test In order to carry out the tests, the following connections need to be made. 1. Connect the Base Unit optical output to the RHU optical input via fiberoptic cable. 2. Connect power to all units being tested (18V-48V DC). Use the relevant setup for every test.
Litenna Installation Guide Required Equipment Gain/IP3 Test To carry out the Gain/IP3 Test, the following procedure needs to be carried out. 1. Set the 2 tone signal from the 2 signal generators. RF signals F1 and F2 should be according to Product Spec. 2. Combine the signals with ZAPD-21 combiner or equivalent. 3. Connect the 2-tone signal to the input of the base (see Figure 10). 4. Set Spectrum Analyzer to: Video BW 10khz RBW 100khz Attenuation 20db Span 30Mhz Center freq.
Litenna Installation Guide Required Equipment Network Analyzer Port 2 Port 1 RF In RF Out Opt Out Base Unit Opt In Remot Hub Unit 18V 18V Figure 9 – Network Analyzer Setup Test SG1 RF Combiner RF In Base Unit Opt Out Opt In Remote Hub Unit DC In 18V SG2 RF Out DC In 18V Spectrum Analyzer Figure 10 – Spectrum Analyzer Setup Test 18 Document No.
Litenna Installation Guide Required Equipment Uplink Network Test To carry out the Noise Floor test, the following procedure needs to be carried out. 1. Connect the Spectrum Analyzer to the Base Unit uplink port. Connect 50ohm terminators to the RHU ports, and to all Base Unit uplink ports except for the tested port (see Figure 11). 2. Extra amplification (25db) is applied between Base Unit and Spectrum Analyzer in order to measure the noise floor. 3.
Litenna Installation Guide Installation Installation The following sections describe the LitennaTM installation. • • • • General Installation. Fiber Installation. Hi Rise Installation. Horizontal Layout Installation. General Installation The LitennaTM components need to be set up, followed by performance verification before installing the system. Foxcom Wireless suggests that a 19” rack-mountable Splice Tray be used at the Base Unit to facilitate optical fiber splicing.
Litenna Installation Guide Installation Fiber Installation The following procedure describes the process for setting up fiberoptic cable for the system (see Figure 12). 1. Pull fiberoptic cable and DC cable through building structure 2. Install splice tray in 19” rack near Base Unit. 3. Near Base Unit, install patch panel cabinet (SC/APC connectors) for fiberoptic cable connections. 4. Connect pigtail between splice tray and patch panel cabinet. 5.
Litenna Installation Guide Installation Communications Room Jumpers PigTail patch panel splice box splice box splice tray Figure 12 – Example: Fiber Installation 22 Document No.
Litenna Installation Guide Installation Fiberoptic Cable Before connecting the cable: 1. Wipe the connector with a lint-free cotton cloth. 2. Note the polarity key of the optical connector before inserting. To connect the cable: SC/APC 1. Line Up the Polarity Key. 2. Insert the connector. Foxcom Wireless Proprietary Information Document No.
Litenna Installation Guide Installation Fiber Installation Parts List The following parts are needed for setting up the LitennaTM Base and Remote Hub Units. A fiber contractor handles cable splicing in order to connect the units. The fiber contractor needs to use the parts list from Table 3 to arrange all equipment necessary for setting up and installing the LitennaTM. Table 3 - Fiber Installation Parts List The following tables refer to a 46 floor building.
Litenna Installation Guide Installation Table 4 - Fiber Installation Labor List Labor Description Quantity Installing splice box + splicing fibers Installing patch panel cabinet + splicing fibers Installing Foxcom Wireless equipment Installing optic cable (per 1m) Installing coax cable Installing electricity ducts (per 1m) Installing electricity cables System checking and report. Installing the box and opening fibers at RHU. Installation of the box and opening fibers at base.
Litenna Installation Guide Installation RHU RHU RHU RHU RHU RHU RHU RHU Sp lice B ox RHU RHU RHU RHU Pa tch P ane l S p lic e Tr a Ba se U nit 1 y Ba se Ba se U nit 5 U nit 6 Figure 13 – High Rise Installation 26 Document No.
Litenna Installation Guide Installation Horizontal Layout Installation In a horizontal layout installation, one fiberoptic cable connects the Base Unit to every installed RHU. The fiberoptic cable terminates at a splice box located near the RHU and from the splice box connects to the associated RHU.
Litenna Installation Guide Optical and RF Connections Optical and RF Connections The following sections describe the LitennaTM optical and RF connections. • • Base Unit. Remote Hub Unit. Base Unit 1. For Downlink, attach RF connector from the BTS to the Base Unit, while maintaining the stated power levels as listed in the product specifications. (Where the need exists, a combiner, attenuator, or duplexer can be installed.) 2. For Uplink, attach RF connector from the Base Unit to the BTS.
Litenna Installation Guide Alarm Monitoring Alarm Monitoring The BU has a 25 pin D-type connector that is connected to 8 dry contact relays (B8U). Each of the relays indicates the status of the link between the BU and one of the RHUs. This capability provides the status of the optical communications. The relay connections on the 25 pin D-type connector can be connected directly to the BTS alarm relays and can be controlled from the remote end.
Litenna Installation Guide Power Supply for Litenna Power Supply for Litenna The power supplies to drive the Litenna can be purchased from FoxcomWireless. The power supplies will be installed into a rack and will provide power for both the Base Units and Remote Hub Units. 100W/ 48VDC AC/DC converters provide power for the Litenna system as shown in the example in Figure 15. 0.9 Diameter RHU 48 RHU 39 0.9 Diameter RHU 18 RHU 10 0.9 Diameter 1.6 Diameter 1.
Litenna Installation Guide Power Supply for Litenna The power supply that drives the Litenna™ system can be purchased from Foxcom Wireless. Four power supply options are available. Option One In this option the BU is connected to the power supply via electrical cables. In order to power the RHU from the Power supply, two copper electrical wires running through the building (separately from the fiberoptic cables) supply power to each RHU in parallel.
Litenna Installation Guide Optical Test Procedure Optical Test Procedure This section describes the methods applied to test fiberoptic cable’s optical insertion loss and return loss. Fiberoptic Cable Test Due to the extended distances that analog signal transmissions travel on cable, the major challenge is to determine the status of the cable. In order to determine that the cables are functioning, technical personnel need to perform optical power tests.
Litenna Installation Guide Optical Test Procedure Optical Fiber Fiberoptic cable is described by the amount of fibers contained within. The cable described by the following terms: ➤ Glass ➤ Buffer ➤ Jacket Glass Glass is the middle fiber in the cable. The data sent over the cable travels through the glass. Buffer The buffer is the plastic coating that covers the fiberoptic cable. The buffer protects the glass from moisture and other damage.
Litenna Installation Guide Optical Test Procedure The cables are available in two different modes, each with different propagation properties: Property Core Clad Attenuation Singlemode 9 µm 125 µm .38 dB/Km 50 µm Multimode 62.5 µm Multimode 125 µm 1 dB/Km 125 µm @1310nm Singlemode fiber λ1 9 125 Multimode fiber λ1 λ3 λ2 50 125 (For illustration only) Figure 17 – Singlemode - Multimode Fibers 34 Document No.
Litenna Installation Guide Optical Test Procedure Connecting Fiberoptic Cable The following are needed in order to carry out a fiberoptic connection: ➤ Splice ➤ Connector Splice A splice consists of cutting the fiberoptic cable across the cable’s diameter and combining the opening with another fiberoptic cable. A splice can be carried out in the following methods: Fusion – following the splice, the cables are warmed and the two fiberoptic cables are melted together.
Optical Test Procedure Litenna Installation Guide Coupler Light from the cable can be split or combined, using a Coupler. Couplers split light with minimal loss, from one to two fibers or combine light from two fibers into a single fiber. 36 Document No.
Litenna Installation Guide Optical Test Procedure Foxcom Wireless System Characteristics The Litenna™ system consists of the following characteristics: • • Singlemode fiber Wavelength 1310nm Fiberoptic Cable Measurement Tests Cable can be measured through several procedures. This document describes the following tests: • Optical insertion loss measurement test • Optical return loss measurement test These tests are intended to be performed by technical personnel that deal with Foxcom Wireless systems.
Litenna Installation Guide Optical Test Procedure Optical Insertion Loss Measurement Test The optical insertion loss measurement tests the attenuation of the cable. The insertion loss’ value should be minimal and remain in scale to 0.4dB/Km. The insertion loss measurement can be performed in two methods: • • Two point test Single point test Method #1: Two Point Test Connection description: Light source connected at one end of the cable and an optical power meter at the other end.
Litenna Installation Guide Optical Test Procedure Method #2: Single Point Test Connection description: This method assumes that there are two parallel fibers on the path to be tested. Connect fiber jumper at end of the cable being tested to another parallel cable. Connect the light source, optical power meter and optical jumper as shown in Figure 19. This measurement can test two cables simultaneously. Fiber optic jumper Light source Optical power meter Connector Figure 19 – Single Point Test 1.
Litenna Installation Guide Optical Test Procedure Optical Return Loss Measurement Test Connection description: Connect a light source and optical power to the inputs. If the coupler has one output, connect the tested cable to this output. If the coupler has two outputs make a pigtail at the second output.
Litenna Installation Guide Optical Test Procedure Measuring Return Power 1. Move light source from connector #3 to connector #1. 2. Connect cable being tested to output connector #3. 3. If coupler has two outputs, then make a pigtail at second output. 4. If cable is longer than 100 meter, then cable needs to be isolated. To isolate cable: a) Find place near test point where winding the cable into a pigtail is possible. b) Make pigtail. 5.
Litenna Installation Guide Final Test Final Test The following checklist should be consulted when reviewing the system’s setup. ✔ Check power supplies. ✔ Check that all LEDs are lit. ✔ Carry out Walk Test, checking all antenna locations, and checking the RSSI power levels at those locations. Base Unit and Remote Hub Unit Connections When the LitennaTM is being installed the LEDs on the units can verify that the optical fibers are performing correctly, and that proper connections have been made.
Litenna Installation Guide Maintenance / Mechanical Adjustment Maintenance / Mechanical Adjustment No maintenance required. No fine tuning required. Troubleshooting The following table should be consulted to verify proper operations of all optical connections. Table 8 - Optical LED States Optical Out Optical In Base Unit Base Unit Laser Link + + + - RHU State Reasons + Both units performing. + Base Unit sending light 1.
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Litenna Installation Guide Appendix A Link Measurements Form Appendix A Link Measurements Form To smoothly carry out link measurements, use the table appears below. All relevant parameters are listed. This table aids system evaluation and provides necessary feedback to Foxcom Wireless. The following issues should be taken into account: • Measure the optical power for every link with an optical meter and light source, according to the number of links or RHUs.
