Preliminary ADCP-75-132 Preliminary Issue 2C August 2006 ® Digivance Indoor Coverage Solution 1900 MHz Single- or Multi-Mode Fiber System Installation and Operation Manual 1371881 Rev 1
ADCP-75-132 Preliminary Issue 2C August 2006 ® Digivance Indoor Coverage Solution 1900 MHz Single or Multi-Mode Fiber System Installation and Operation Manual 1371881 Rev 1
ADCP-75-132 • Issue 2C • August 2006 • Preface COPYRIGHT © 2006, ADC Telecommunications, Inc. All Rights Reserved REVISION HISTORY ISSUE DATE REASON FOR CHANGE Issue 1 10/2002 Original Issue 2 03/2004 Deleted all references to the LIU, inserted new references to the HPCP, added air quality specifications and warnings, and updated phone numbers and email addresses. Issue 2C 08/2006 Updated to include new specifications for the RF output signal level at the DRU.
ADCP-75-132 • Issue 2C • August 2006 • Preface TABLE OF CONTENTS Content 1 2 3 Page SYSTEM FUNCTIONAL OVERVIEW ..........................................................1 1.1 Basic System Components .........................................................1 1.2 Interface With BTS...............................................................1 1.3 Interface With Cellular Phones ......................................................1 1.4 Digital Fiber Optic Transport ..............................
ADCP-75-132 • Issue 2C • August 2006 • Preface TABLE OF CONTENTS Content Page 5.2 6 5.3 RF Input andOutput Signal Level Adjustment ........................................... 45 5.4 Test System Performance ........................................................ 46 SYSTEM MAINTENANCE PROCEDURES ..................................................... 48 6.1 7 Turn-Up System and Verify Operation ................................................ 42 Tools and Materials ..................................
ADCP-75-132 • Issue 2C • August 2006 • Preface ABOUT THIS GUIDE This installation and operation manual provides the following information: • An overview of the Digivance Indoor Coverage Solution (ICS) • A description of the basic system components including the Digital Host Unit (DHU), Digital Expansion Unit (DEU), and the Digital Remote Unit (DRU). • System requirements for planning the Digivance ICS installation. • Procedures for installing the DHU.
ADCP-75-132 • Issue 2C • August 2006 • Preface ADMONISHMENTS Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment. An admonishment identifies a possible hazard and then explains what may happen if the hazard is not avoided. The admonishments — in the form of Dangers, Warnings, and Cautions — must be followed at all times.
ADCP-75-132 • Issue 2C • August 2006 • Preface STANDARDS CERTIFICATION FCC: This equipment complies with the applicable sections of Title 47 CFR Part 24. Caution: Modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Part 15.5 General conditions of operation: a.
ADCP-75-132 • Issue 2C • August 2006 • Preface DC DEU DHU DRU EIA ERP ESD FCC FDA HPCP ICS MM NEC NOC PWR RIU RF RSSI RX SM TDMA TX UL UPS V VAC VDC WECO Page viii © 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006 1 SYSTEM FUNCTIONAL OVERVIEW The Digivance ICS is a digitally distributed antenna system that provides in-building coverage for digital (TDMA and CDMA) phone systems operating within the 1900 MHz frequency bands. Large buildings typically interfere with the transmission or reception of cellular phone system signals by imposing high attenuation losses on RF signals.
ADCP-75-132 • Issue 2C • August 2006 DRU DRU REMOTE BTS DRU DRU RIU DHU RF DRU HPCP RF DRU DEU DRU LOCAL BTS DRU DEU DRU DRU DRU 16417-B Figure 1. System Overview Functional Block Diagram 1.4 Digital Fiber Optic Transport The DHU is connected to each DRU unit over a pair of multi-mode or single-mode (depending on the type of optical transceiver specified) optical fibers. One fiber is used to transport the forward path optical signal.
ADCP-75-132 • Issue 2C • August 2006 optical transport connection. With 62.5 micron core multi-mode fiber , the optical path may be up to 500 meters in length. With 50 micron core multi-mode fiber, the optical path may be up to 750 meters in length. With 9 micron core single-mode fiber, the optical path may be up to 10 kilometers in length. Single- and multi-mode fibers may be used in the same system.
ADCP-75-132 • Issue 2C • August 2006 • Digitizing of the cellular forward path RF signal • Distribution of the digitized forward path RF signals into six digitized optical signals • Conversion of up to six reverse path digitized optical signals to six digitized RF signals • Combining of the six digitized RF signals into a single composite digitized RF signal • Conversion of the combined digitized RF signal to a composite RF signal • DC power for powering the DRU’s • Relay contact closures to p
ADCP-75-132 • Issue 2C • August 2006 2.1.3 Fault Detection and Alarm Reporting The DHU detects internal circuitry faults and optical port faults. Various front panel Light Emitting Diode (LED) indicators turn from green to red or yellow if a fault is detected or an optical input is lost. A set of alarm contacts (normally open and normally closed) are also provided for reporting an alarm to an external alarm system when a fault is detected.
ADCP-75-132 • Issue 2C • August 2006 2.1.7 Cooling Continuous air-flow for cooling is provided by dual fans mounted on the right side of the housing. A minimum of 3 inches (76 mm) of clearance space must be provided on both the left and right sides of the DHU for air intake and exhaust. An alarm is provided that indicates if a high temperature condition (>50º C/122º F) occurs. The fans may be field-replaced if either fan fails. 2.1.
ADCP-75-132 • Issue 2C • August 2006 (1) GROUND STUD (4) OPTICAL PORT LED INDICATOR (6 PLACES) (3) AC POWER ON/OFF SWITCH (2) AC POWER CORD CONNECTOR NOTE: SHOWN WITHOUT CABLE MANAGEMENT TRAY (5) OPT/ELEC PORT ENABLE/DISABLE SWITCH (6 PLACES) (8) UNIT LED INDICATOR (11) RF INPUT CONNECTOR (6) ELECTRICAL PORT (7) OPTICAL PORT (10) ALARM (9) OVERDRIVE (12) RF OUTPUT DC POWER JACK OPTICAL TRANSCEIVER CONNECTOR LED CONNECTOR (6 PLACES) TX-LEFT - RX-RIGHT RECEPTACLE INDICATOR (6 PLACES) 17264-A Figure
ADCP-75-132 • Issue 2C • August 2006 2.2.1 Primary Components The DRU consists of an electronic circuit board assembly that is mounted within a powdercoated sheet metal enclosure. The metal enclosure provides a mounting point for the electronic assembly, serves as a heat sink, and controls RF emissions. Except for the optical transceiver, the DRU components are not field replaceable. The DRU is designed for use within a non-condensing indoor environment such as inside a building.
ADCP-75-132 • Issue 2C • August 2006 VDC power converter (available separately as an accessory item) plugged into a properly grounded 120 VAC outlet. The AC/DC converter is a UL Listed stand-alone Limited Power Supply (LPS) unit with a rated output of 48 VDC at 1.2 Amps. When powered by the DHU or DEU, a category 3 or 5 twisted-pair cable terminated with RJ-45 connectors is required. 2.2.7 Cooling The DRU is cooled by natural convection air-flow.
ADCP-75-132 • Issue 2C • August 2006 2.3 Digital Expansion Unit Description The DEU, shown in Figure 6, serves as a service expansion unit and line extender for the Digivance ICS.
ADCP-75-132 • Issue 2C • August 2006 mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted, the front panel of the DEU is flush with the front of the rack and the cable management tray extends 3.9 inches (99 mm) beyond the front panel. For wall-mount applications, a pair of holes is provided in the cable management tray which allow the DEU to be mounted on any flat vertical surface. The DEU should be oriented with the front panel facing upward when wall-mounted.
ADCP-75-132 • Issue 2C • August 2006 Table 3. Digital Expansion Unit User Interface REF No. USER INTERFACE DESIGNATION FUNCTIONAL DESCRIPTION DEVICE 1 Grounding stud Used for connecting a grounding cable to the DEU chassis. 2 POWER 3-wire AC power cord connector Used for connecting the AC power cord. 3 I/O I/O rocker switch/ circuit breaker Provides AC power On/Off control and AC power over current protection.
ADCP-75-132 • Issue 2C • August 2006 2.4 Terms and Definitions Refer to Table 4 for a listing of the terms used in this manual and their definition. Table 4. Terms and Definitions TERM DEFINITION Alarm Response The response to an alarm input. Base Transceiver Station The radio equipment that transmits and receives the voice and control channels to and from the cellular handsets. Composite Signal A signal that is the sum of several signals.
ADCP-75-132 • Issue 2C • August 2006 2.5 Specifications Refer to Table 5 for the Digivance ICS system specifications. All specifications apply after a five minute warm-up period. Table 5. System Specifications PARAMETER SPECIFICATION REMARKS Fiber type Multi-mode: 50 or 62.5 micron core Single-mode: 9 micron core Two fibers per transport link Maximum fiber length for guaranteed performance 500 m (1,641 ft) 750 m (2461 ft) 10 km (32,808 ft) With 62.
ADCP-75-132 • Issue 2C • August 2006 Table 5. System Specifications, continued PARAMETER SPECIFICATION REMARKS RF Reverse Path System bandwidth 25 MHz 1900 MHz freq. bands AD band DBE band BEF band EFC band US PCS 1850 to 1870 MHz 1865 to 1890 MHz 1870 to 1895 MHz 1885 to 1910 MHz Gain +14 dB nominal Gain Variation < 6 dB < 1.5 dB variation per 1.25 MHz CDMA channel Over frequency, temperature, and unit to unit.
ADCP-75-132 • Issue 2C • August 2006 Table 5. System Specifications, continued PARAMETER SPECIFICATION REMARKS Physical/Electrical – DRU Weight 1.5 lbs (708 g) RF connection SMA Female Antenna types Ceiling mount omni directional 90º directional panel Ceiling mount hallway 2.5 dBi gain 7.
ADCP-75-132 • Issue 2C • August 2006 3 INSTALLATION PLANNING AND SYSTEM DESIGN This section provides installation planning information and basic system design recommendations for RF engineers that will be designing and installing an in-building coverage solution using the Digivance ICS. System design and planning services are available from ADC if required. Refer to Section 7 of this manual for additional information. 3.
ADCP-75-132 • Issue 2C • August 2006 The HPCP is rack or wall mountable. Refer to the Digivance ICS 800 and 1900 MHz High Power Conditioning Panel User Manual (ADCP-75-175) for additional information. 3.1.2 Remote BTS (Cell Site Base Station) Interface A remote interface between the DHU and the BTS (cell site base station) via a donor antenna requires specific RF input and output signal levels at both the DHU and the antenna.
ADCP-75-132 • Issue 2C • August 2006 3.2 Location and Mounting Requirements 3.2.1 DHU and DEU Location and Mounting Requirements The DHU and the DEU may be either rack mounted or wall mounted. Fasteners (both metric and US standard) are included with each unit for rack mount applications. A pair of reversible mounting brackets is provided that allows the unit to be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack.
ADCP-75-132 • Issue 2C • August 2006 The DC power cable and optical fibers should be routed to the DRU front panel for connection. The antenna coaxial cable should be routed to the DRU rear panel for connection. A minimum of 3 inches (76 mm) of clearance space should be provided on all sides of the DRU (except the bottom) to ensure there is adequate air circulation for cooling. In addition, at least one surface of the DRU installation area must be open to the interior of the building.
ADCP-75-132 • Issue 2C • August 2006 15988-A Figure 10. AC/DC Power Converter 3.4 Optical Options and Requirements Each DHU and its associated DEU’s and DRU’s are connected over a pair of optical fibers. One fiber transports the forward path optical signal and the other fiber transports the reverse path optical signal. Either 62.5 or 50 micron core multi-mode optical fiber; or 9 micron core single-mode optical fiber may be used for the optical transport connection. With 62.
ADCP-75-132 • Issue 2C • August 2006 62.
