ADCP-75-114 Issue 2C January 2002 Digivance™ Indoor Coverage Solution Single Band Remote Interface Unit (800 or 1900 MHz) User Manual DRAFT 1188201 Rev A
ADCP-75-114 Issue 2C January 2002 Digivance™ Indoor Coverage Solution Single Band Remote Interface Unit (800 and 1900 MHz) User Manual 1188201 Rev A
ADCP-75-114 • Issue 2C • January 2002 • Preface COPYRIGHT 2002, ADC Telecommunications, Inc. All Rights Reserved Printed in the U.S.A. REVISION HISTORY ISSUE DATE REASON FOR CHANGE Issue 1 06/2001 Original Issue 2 07/2001 Deleted forward path OIP3 specification from Table 2, Remote Interface Unit Specifications. Issue 2C 01/02 Updated to include specifications for 1900 MHz unit. TRADEMARK INFORMATION ADC is a registered trademark of ADC Telecommunications, Inc.
ADCP-75-114 • Issue 2C • January 2002 • Preface TABLE OF CONTENTS Content Page ABOUT THIS MANUAL ........................................................................v RELATED PUBLICATIONS .....................................................................v ADMONISHMENTS ..........................................................................v GENERAL SAFETY PRECAUTIONS ............................................................... vi STANDARDS CERTIFICATION ......................................
ADCP-75-114 • Issue 2C • January 2002 • Preface This page intentionally blank Page iv 2002, ADC Telecommunications, Inc.
ADCP-75-114 • Issue 2C • January 2002 • Preface ABOUT THIS MANUAL This publication provides a description of the Digivance ICS Remote Interface Unit (RIU) plus instructions for installing the RIU. An overview of the Digivance ICS and a complete description of the Digital Host Unit (DHU), Digital Remote Unit (DRU) and the Digital Expansion Unit (DEU) are provided in the Digivance ICS System Installation and Operation Manual (See Related Publications section).
ADCP-75-114 • Issue 2C • January 2002 • Preface GENERAL SAFETY PRECAUTIONS Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. STANDARDS CERTIFICATION FCC: This equipment complies with the applicable sections of Title 47 CFR Parts 22 and 24.
ADCP-75-114 • Issue 2C • January 2002 1 DESCRIPTION This section provides a complete description of the Remote Interface Unit (RIU). 1.1 Primary Functions and Components The RIU, shown in Figure 1, serves as the interfacing unit between a remote BTS and the Digivance DHU.
ADCP-75-114 • Issue 2C • January 2002 In the reverse path, the input signal level received at the DRU antenna will vary depending on the path loss between the cell phone and the antenna and the strength of the cell phone signal. When the level of the reverse path (uplink) signal at the DRU antenna is at a maximum, the composite maximum level of the output signal from the DHU will be –30 dBm.
ADCP-75-114 • Issue 2C • January 2002 1.3 Fault Detection and Alarm Reporting The RIU is designed to detect a power amplifier over or under current condition and a high temperature condition. A single front panel Light Emitting Diode (LED) indicator turns from green to red or yellow if a fault is detected. 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-75-114 • Issue 2C • January 2002 1.8 User Interface The RIU user interface consists of the various connectors, switches, terminals, and LED that are provided on the RIU front panel. The RIU user interface points are indicated in Figure 3 and described in Table 1.
ADCP-75-114 • Issue 2C • January 2002 1.9 Specifications The specifications for the RIU are provided in Table 2. All specifications apply after a five minute warm-up period. Table 2.
ADCP-75-114 • Issue 2C • January 2002 Table 2. Remote Interface Unit Specifications, continued PARAMETER SPECIFICATION REMARKS Physical Weight Dimensions (H×W×D) Color RF connections Alarm connection Reliability 20.2 lbs (8.7 kg) 3.5 × 17.2 × 17.
ADCP-75-114 • Issue 2C • January 2002 The following materials are required in order to complete the procedures in this section: • Wall-mount fasteners (wall-mount applications only) • #22 AWG (0.40 mm) category 3 or 5 cable (for external alarm connections) • #18 AWG (1.00 mm) insulated stranded copper wire (for chassis grounding wire) • Ring terminal for #18 wire (for chassis ground wire connection) • High performance, flexible, low loss 50-ohm coaxial cable • N-type male connectors • Wire ties 2.
ADCP-75-114 • Issue 2C • January 2002 2. Remove both mounting brackets from the RIU (requires TORX screwdriver with T20 bit). 3. Reinstall both mounting brackets so the long side of the bracket is flush with the RIU front panel as shown in Figure 4. Use the screws removed in step 2 to re-attach the brackets to the RIU enclosure. REMOVE AND REINSTALL MOUNTING BRACKETS AS SHOWN FOR INSTALLATION IN 23-INCH RACKS 16487-B Figure 4. Installing the Mounting Brackets for 23-Inch Rack Installations 4.
ADCP-75-114 • Issue 2C • January 2002 2.3.2 Wall-Mount Installation The RIU may be mounted from any flat vertical surface. It is recommended that a backer board such as 3/4-inch plywood be applied over the mounting surface to provide a secure base for attaching the RIU. Two mounting holes are provided in the cable management tray for securing the RIU to the mounting surface.
ADCP-75-114 • Issue 2C • January 2002 6. Using the RIU as a template, mark the location of the mounting holes on the mounting surface. Note: The mounting holes in the RIU cable management tray are spaced 11-21/32 inches (296 mm) center to center. 7. Set the RIU aside and then drill appropriately sized holes in the mounting surface for the fasteners. 8. If using only the mounting brackets to secure the RIU to the mounting surface, skip step 9 and proceed to step 10.
ADCP-75-114 • Issue 2C • January 2002 2.4 Chassis Ground Connection A stud is provided on the rear side of the chassis for connecting a grounding wire to the chassis. Use the following procedure to connect the grounding wire to the chassis and to route the grounding wire to an approved earth ground source: 1. Obtain a length of #18 AWG (1.00 mm) insulated stranded copper wire for use as a chassis grounding wire. 2. Terminate one end of the wire with a ring terminal. 3.
ADCP-75-114 • Issue 2C • January 2002 2.5.1 Forward and Reverse Path Coaxial Cable Connections Use the following procedure to install the forward and reverse path coaxial cables that link the RIU to the DHU: 1. Locate the forward and reverse path coaxial cables that were routed to the RIU from the DHU.
ADCP-75-114 • Issue 2C • January 2002 1. Obtain the required length of high performance, flexible, low loss 50-ohm coaxial communications cable for the antenna coaxial connection. 2. Route the coaxial cable between the RIU and the donor antenna (per system design) and cut to the required length. Allow sufficient slack for dressing and organizing cables at the RIU and antenna. 3. Terminate each cable end with a type N male connector following the connector supplier’s recommendations. 4.
ADCP-75-114 • Issue 2C • January 2002 1. Obtain the required length of category 5 cable. 2. Route the cable between the RIU and the external alarm system (if not already routed) and then cut to required length. Allow sufficient slack for dressing and organizing the cable at the RIU. 3. Strip back the outer cable sheath and insulation to expose the wires at both ends of the cable and strip back 0.2 inches (5 mm) of insulation each wire. 4.
ADCP-75-114 • Issue 2C • January 2002 2.7 AC Power Connection The AC power interface between the RIU and the AC power source is supported by a 3-wire AC power cord connector located on the RIU front panel. The AC connector provides a connection point for the power cord which is provided separately with the RIU. Use the following procedure to install the AC power cord: 1. Place the RIU AC power ON/OFF switch, shown in Figure 12, in the OFF position (press O). 16654-A AC POWER CORD Figure 12.
ADCP-75-114 • Issue 2C • January 2002 3 OPERATION This section provides guidelines for turning-up the RIU, verifying that the RIU is operating properly, setting the forward and reverse path signal levels, and correcting any installation problems. 3.1 Tools and Materials The following tools and materials are required in order to complete the procedures in this section: • RF power meter • Pencil or pen • Writing pad 3.
ADCP-75-114 • Issue 2C • January 2002 7. Check the forward path RF signal level at the DHU RF IN port and verify that the DHU composite input signal level is –20 dBm (provides maximum DRU output). Re-adjust FWD LEVEL ADJ rotary switches to add or remove gain if required. 8. Check the reverse path RF signal level at the antenna and verify that the signal level is correct per the system design. Re-adjust REV LEVEL ADJ rotary switches to add or remove gain if required. 9.
ADCP-75-114 • Issue 2C • January 2002 Note: An input signal level of –20 dBm at the DHU produces an output signal level of +13 dBm (800 MHz) or +16 dBm (1900 MHz) at the DRU. If maximum output is not required at the DRU, the DHU input signal level may be reduced in order to produce a lower DRU output signal level. Decreasing the DHU input signal level by 1 dB produces a corresponding 1 dB drop in the DRU output signal level. 6.
ADCP-75-114 • Issue 2C • January 2002 Table 4.
ADCP-75-114 • Issue 2C • January 2002 4 MAINTENANCE This section explains the alarm reporting system, provides a method for isolating and troubleshooting faults, and provides procedures for replacing the cooling fan. The RIU requires no regular maintenance to insure continuous and satisfactory operation. Maintenance, as it applies to the RIU, primarily involves diagnosing and correcting service problems as they occur.
ADCP-75-114 • Issue 2C • January 2002 Table 5. Fault Isolation and Troubleshooting Alarm Type Minor ALARM Indicator: Yellow Problem The RIU is overheating. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Air intake or exhaust openings to RIU chassis blocked. 2. Ambient temperature > 58º C/136º F. 3. Faulty fan. 4. Faulty RIU. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature. 3. Replace fan (see Section 4.3). 4. Replace RIU.
ADCP-75-114 • Issue 2C • January 2002 LATCH 16637-A Figure 15. Fan/Grill Assembly Removal 5. Carefully withdraw the fan/grill assembly from the enclosure until the wiring harness is exposed and the connector is accessible. 6. Lift the small latch on the wiring harness connector (see Figure 15) and carefully unplug the connector from the circuit board connector. 7.
ADCP-75-114 • Issue 2C • January 2002 12. Secure the fan/grill assembly to the side of the enclosure (see Figure 15) using the four flat-head screws removed in step 4. 13. Reconnect the AC power cord and place the RIU AC power On/Off switch in the ON position (press I). 14. Verify that the fan runs properly following power up. 15. Notify the NOC or alarm monitoring system operator that the system is going back online. Page 23 © 2002, ADC Telecommunications, Inc.
ADCP-75-114 • Issue 2C • January 2002 5 CUSTOMER INFORMATION AND ASSISTANCE PHONE: EUROPE Sales Administration: +32-2-712-65 00 Technical Assistance: +32-2-712-65 42 U.S.A. OR CANADA Sales: 1-800-366-3891 Extension 73000 Technical Assistance: 1-800-366-3891 Extension 73475 ELSEWHERE Sales Administration: +1-952-938-8080 Technical Assistance: +1-952-917-3475 SYSTEM INTEGRATION DIVISION (SID) +1-952-294-3600 WRITE: U.S.A. ADC TELECOMMUNICATIONS, INC PO BOX 1101, MINNEAPOLIS, MN 55440-1101, USA U.S.A.
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