FCC ID: F8I-DVICSRIU800 ADCP-75-114 Issue C June 2001 Digivance Indoor Coverage Solution 800 Mhz Remote Interface Unit User Manual DRAFT 1145993
ADCP-75-114 • Issue C • June 2001 • Preface COPYRIGHT 2001, ADC Telecommunications, Inc. All Rights Reserved Printed in the U.S.A. REVISION HISTORY ISSUE DATE Issue C 06/2001 REASON FOR CHANGE Original TRADEMARK INFORMATION ADC and ADC Telecommunications are registered trademarks of ADC Telecommunications, Inc. Digivance is a trademark of ADC Telecommunications, Inc. TORX is a registered trademark of Textron, Inc. DISCLAIMER OF LIABILITY Contents herein are current as of the date of publication.
ADCP-75-114 • Issue C • June 2001 • Preface TABLE OF CONTENTS Content 1 Page DESCRIPTION ....................................................................... 1 1.1 2 3 1.2 Mounting .................................................................... 2 1.3 Fault Detection and Alarm Reporting .................................................. 3 1.4 RF Signal Connections ........................................................... 3 1.5 RF Signal Level Adjustments ...............................
ADCP-75-114 • Issue C • June 2001 • 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 Installation and Operation Manual (ADCP-75-110).
ADCP-75-114 • Issue C • June 2001 • Preface Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Caution: Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property damage if the hazard is not avoided.
ADCP-75-114 • Issue C • June 2001 • Preface RF UL V VAC VDC WECO Page vi 2001, ADC Telecommunications, Inc.
ADCP-75-114 • Issue C • June 2001 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 C • June 2001 In the reverse path, the required RF output signal level to the donor antenna will vary depending on the DRU path loss. When the level of the reverse path (uplink) signal at the DRU is at the recommended composite maximum level of –40 dBm, the level of the RF output signal from the DHU is –30 dBm. Therefore, it will generally be necessary to add some gain to the reverse path signal in order to achieve the required output signal level at the donor antenna.
ADCP-75-114 • Issue C • June 2001 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 C • June 2001 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 C • June 2001 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. Remote Interface Unit Specifications PARAMETER SPECIFICATION Environmental Operating Temperature 0º to 50º C (32º to 122º F) Storage Temperature –30º to +70º C (–22 to 158º F) Humidity No condensation Weather resistance Indoor installation only REMARKS RF Forward Path A-band frequency range 869 to 891.
ADCP-75-114 • Issue C • June 2001 Table 2. Remote Interface Unit Specifications (Continued) PARAMETER SPECIFICATION REMARKS Physical Weight 20.2 lbs (8.7 kg) Dimensions (H×W×D) 3.5 × 19.0 × 17.
ADCP-75-114 • Issue C • June 2001 2 INSTALLATION This section provides the installation procedures for the RIU. Installation of the various Digivance ICS units may proceed separately from the installation of the RIU. 2.
ADCP-75-114 • Issue C • June 2001 2.3 Mounting Procedure The RIU may be either rack-mounted or wall-mounted. Of the procedures that follow, use whichever procedure is appropriate for the installation. 2.3.1 Rack-Mount Installation The RIU may be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. Both US standard and metric machine screws are included for rack mounting the RIU.
ADCP-75-114 • Issue C • June 2001 4. Position the RIU in the designated mounting space in the rack (per system design) and then secure the mounting brackets to the rack using the four machine screws provided (use #12-24 screws or M6 x 10 screws, whichever is appropriate) as shown in Figure 5. Note: Provide a minimum of 3 inches (76 mm) of clearance space on both the left and right sides of the RIU for air intake and exhaust. 16483-B Figure 5. RIU Rack Mount Installation 2.3.
ADCP-75-114 • Issue C • June 2001 3. Remove both mounting brackets from the RIU (requires TORX screwdriver with T20 bit). 4. Reinstall both mounting brackets so the short side of the bracket is flush with the bottom of the RIU as shown in Figure 6. Use the screws removed in step 3 to re-attach the brackets to the RIU enclosure. 16484-B Figure 6. Installing the Mounting Brackets for Wall-Mount Installation 5.
ADCP-75-114 • Issue C • June 2001 BACKER BOARD SUCH AS 3/4-INCH PLYWOOD 16486-B Figure 7. RIU Wall-Mount Installation 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.
ADCP-75-114 • Issue C • June 2001 16169-A Figure 8. Chassis Ground Stud 6. Cut the chassis grounding wire to length and connect it to the approved ground source as required by local code or practice. Note: Be sure to maintain reliable grounding for rack and wall mounted equipment. Pay particular attention to ground source connections. 2.5 Coaxial Cable Connections The RF signal connections between the RIU and DHU are supported through a pair of type N female connectors mounted on the RIU front panel.
ADCP-75-114 • Issue C • June 2001 FORWARD OUT CONNECTOR TYPE-N MALE CONNECTOR 16652-A REVERSE IN CONNECTOR Figure 9. FORWARD OUT and REVERSE IN Coaxial Cable Connections 4. Connect the reverse path cable to the REVERSE IN connector on the RIU front panel as shown in Figure 9. 5. Dress and secure cables at the RIU. 2.5.
ADCP-75-114 • Issue C • June 2001 ANTENNA CONNECTOR 16653-A TYPE-N MALE CONNECTOR Figure 10. RIU Antenna Cable Connection 2.6 External Alarm System Connections The alarm interface between the RIU and an external alarm system is supported by a sixterminal plug (with screw-type terminals) that connects to a receptacle on the RIU front panel. The terminal plug provides connections to normally open (NO) and normally closed (NC) dry type alarm contacts for both minor and major alarms.
ADCP-75-114 • Issue C • June 2001 ALARM CONNECTOR MINOR ALARM WIRES MAJOR ALARM WIRES ALARM CONNECTOR DETAIL 16482-B Figure 11. External Alarm System Connections 5. Connect the Minor alarm wire pair to the MINOR COM/NC or MINOR COM/NO terminals (whichever is required by the external alarm system) on the RIU alarm terminal connector as shown in Figure 11. 6. Connect the Major and Minor alarm wire pairs to the appropriate terminals on the external alarm system. 7. Dress and secure cable. 2.
ADCP-75-114 • Issue C • June 2001 16654-A AC POWER CORD Figure 12. AC Power Connection 2. Locate the AC power cord which is provided separately with the RIU. Use only the AC power cord provided with the RIU or an equivalent UL listed and CSA certified 3conductor, 18 AWG cord terminated in a molded-on plug cap rated 125 V, 15 A with a minimum length of 6 feet (1.8 m). Note: The RIU is intended to be used with a 3-wire grounding type plug which has a grounding pin.
ADCP-75-114 • Issue C • June 2001 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: • Portable spectrum analyzer or network analyzer • Pencil or pen • Writing pad 3.
ADCP-75-114 • Issue C • June 2001 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. Reconnect the alarm system or notify the alarm system provider that testing is complete. 3.3 Forward Path Level Adjustment The level of the composite RF output signal from the donor antenna will vary depending on the gain of the antenna and the number of channels present.
ADCP-75-114 • Issue C • June 2001 5. Determine the total cable loss that is imposed by the coaxial cable that links the antenna to the RIU and by the forward path coaxial cable that links the RIU to the DHU. 6. Subtract the total cable loss from the total composite power calculated in step 4. 7. Subtract –20 (the composite maximum input signal level required at the DHU) from the amount determined in step 6.
ADCP-75-114 • Issue C • June 2001 Table 4.
ADCP-75-114 • Issue C • June 2001 3.4 Reverse Path Level Adjustment The level of the composite RF signal that should be input to the antenna will vary depending on the maximum acceptable DRU path loss per the system design. The design objective is for the Digivance system to provide unity gain. Use the following procedure to adjust the RIU to provide the required reverse path signal level at the antenna: 1. Determine the maximum acceptable DRU path loss per the system design specifications. 2.
ADCP-75-114 • Issue C • June 2001 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 C • June 2001 Table 5. Fault Isolation and Troubleshooting, Continued Alarm Type: Major ALARM Indicator: Red: POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Over or undercurrent condition detected at power amplifier 1. Replace RIU. Alarm Type: Major ALARM Indicator: Off: POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. AC power source off or disconnected. 2. Faulty RIU 1. Restore AC power. 2. Replace RIU. 4.
ADCP-75-114 • Issue C • June 2001 LATCH 16637-A Figure 15. Fan/Grill Assembly Removal 16485-B Figure 16. Removing Fan From Grill 10. Connect the wiring harness connector to the circuit board connectors. 11. Route the wiring harness under the fan. 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.
ADCP-75-114 • Issue C • June 2001 5 CUSTOMER INFORMATION AND ASSISTANCE For customers wanting information on ADC products or help in using them, ADC offers the services listed below. To obtain any of these services by telephone, first dial the central ADC telephone number, then dial the extension provided below. The central number for calls originating in the U.S.A. or Canada is 1-800-366-3891. For calls originating outside the U.S.A. or Canada, dial country code “1” then dial 952-946-3000.
