User Manual
Table Of Contents
- SECTION 1: OVERVIEW
- SECTION 2: DESCRIPTION
- SECTION 3: OPERATION
- SECTION 4: MAINTENANCE
- SECTION 5: GENERAL INFORMATION
- ABOUT THIS MANUAL
- RELATED PUBLICATIONS
- ADMONISHMENTS
- GENERAL SAFETY PRECAUTIONS
- STANDARDS CERTIFICATION
- LIST OF ACRONYMS AND ABBREVIATIONS
- SECTION 1: OVERVIEW
- SECTION 2: DESCRIPTION
- SECTION 3: OPERATION
- 1 BEFORE STARTING OPERATION
- 2 TURN-UP SYSTEM AND VERIFY OPERATION
- 2.1 Reference Procedure: Determine Forward Path Input Signal Level
- 2.2 Reference Procedure: Enter Site Name and Site Number
- 2.3 Reference Procedure: Enter Host Forward Attenuation
- 2.4 Reference Procedure: Determine Output Signal Level at RU Antenna Port
- 2.5 Reference Procedure: Enter Remote Forward Attenuation
- 2.6 Reference Procedure: Enter Host Reverse Attenuation
- 2.7 Reference Procedure: Enter Host Forward and Reverse Delay
- SECTION 4: MAINTENANCE
- SECTION 5: GENERAL INFORMATION
ADCP-75-187 • Issue 3 • September 2006 • Section 2: DESCRIPTION
Page 2-10
© 2006, ADC Telecommunications, Inc.
the forward path RF signal. The aluminum enclosure provides a mounting point for the
electronic assemblies, controls RF emissions, seals out dirt and moisture, and provides passive
cooling. The electronic assemblies are not user replaceable or accessible. All connectors and
indicators are mounted on the bottom of the RU enclosure for easy access.
The single-band version of the RU consists of one STM and one LPA mounted within the same
enclosure. The dual-band version, shown in Figure 2-4, consists of two STM’s and two LPA’s
mounted within the same enclosure. The dual-band version makes it possible to support two
separate frequency bands with a single RU.
Figure 2-4. Dual-Band Remote Unit
3.2 Mounting
The RU may be mounted on a flat vertical surface (such as the side of a building), on a utility pole,
or from a horizontal cable or overhead support. A combination wall/pole mounting bracket is
provided with each unit. A separate strand-mount kit (accessory item) is available if it is necessary
to mount the RU from a cable. Inside-pole mounting and underground vault installations are also
possible. Contact the Wireless TAC (see Section 5) for additional information.
3.3 Fault Detection and Alarm Reporting
The RU detects and reports various faults including remote unit fault, optical fault, output power
fault, temperature fault, and power amplifier fault. A single bottom-mounted Light Emitting
Diode (LED) indicator turns from off to red if a major fault is detected. The status of the STM
and LPA, the alarm state, and other fault information is summarized and reported over the
optical interface to the HU. Fault and alarm information may be accessed at the HU through the
EMS software GUI or remotely through the NOC/NEM interface or SNMP interface.
20568-C