Ericsson LBI-39128 manual

Page 6

LBI-39128

INTRODUCTION/DESCRIPTION

INTRODUCTION

This manual describes the installation and operation of the Decibel Products DB8860-based PMU (Power Monitor Unit) for non-simulcast EDACS (Enhanced Digital Access Communications System) repeater sites that use a VAX computer for the Site Controller. This manual covers only those features of the Decibel Products DB8860 that are required for this application.

The user must provide an RS232 CRT terminal (or PC with terminal emulation software) for installation and maintenance.

DESCRIPTION

The PMU (Power Monitor Unit) is used to quickly identify damaged transmitters, transmit combiners, transmit antennas, and connecting cables so that the equipment can be quickly removed from service and repaired. The PMU is a microprocessor-driven power monitoring and reporting device that receives power measurements from the power sensors, receives monitoring instructions from the Site Controller computer, and reports alarm conditions back to the Site Controller computer.

A unidirectional power sensor is placed at the output of each transmitter to send forward power measurements to the PMU. A bi-directional power sensor is placed at the output of each transmitter combiner to send forward and reflected power measurements to the PMU.

The Site Controller computer tells the PMU which power sensors to monitor and when, by telling the PMU when each transmitter is keyed and unkeyed.

The PMU reports an alarm for a specific transmitter when the output power measurement for that transmitter exceeds the upper or lower power limit. The Site Controller computer then takes that transmitter out of service.

The PMU reports an alarm for a specific antenna number when the input power measurement for that antenna exceeds the upper or lower power limit, or the SWR calculation exceeds the upper limit.

Figure 1 shows the locations of the PMU-related components in a standard 20-channel EDACS installation after the PMU option has been installed. Each standard EDACS repeater cabinet includes the unidirectional power sensors, power sensor cables, power sensor module, and cabinet interconnect cable. The cable between the Site Controller computer and the PMU, the cables between the PMU and the Power Sensor interface module, and the Power Sensor interface module all come with the PMU. The bi- directional (antenna) power sensor(s) are ordered separately.

If the PMU option is to be installed in an older EDACS site, you may need some additional material to update or adapt to the older equipment (see the Installation section in this manual for details).

 

 

 

 

 

 

 

Bi-directional

 

 

 

Antenna #1

 

 

Antenna #2

 

Power

 

 

 

 

 

Antenna Power Sensor Cable

 

 

Sensor

 

 

 

 

 

 

 

 

Cabinet

 

 

 

 

 

 

 

 

 

Transmitter Combiner #1

 

 

Transmitter Combiner #2

Interconnect

 

 

 

Cable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power Sensor

 

 

 

 

Interface Module

 

 

 

Interface

 

 

 

 

 

 

 

Module

Xmtr

Xmtr

Xmtr

Xmtr

Power

Xmtr

Xmtr

 

Transmitter

Monitor

 

#12

#9

#6

#3

#15

#18

 

 

Power Sensor

 

 

 

 

 

 

 

 

 

 

 

 

Unit

 

 

 

Cable

Xmtr

Xmtr

Xmtr

Xmtr

 

Xmtr

Xmtr

Xmtr

 

#11

#8

#5

#2

Site

#14

#17

#20

Unidirectional

 

 

 

 

Controller

 

 

 

Power

 

 

 

 

 

 

 

Sensor

 

 

 

 

Computer

 

 

 

 

 

 

 

 

 

 

 

Xmtr

Xmtr

Xmtr

Xmtr

 

Xmtr

Xmtr

Xmtr

 

#10

#7

#4

#1

 

#13

#16

#19

 

Figure 1 - Location of PMU Components

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Contents Installation & Operation Contents Table of Contents Figures and Tables List of Figures and TablesSpecifications SpecificationsLBI-39128 VAX Site Controller Computer Application Software PromsPersonality Proms Site Controller Hardware Site Controller SoftwarePersonality PROMs PMU HardwareApplication Software PROMs Addition from No PMUProcedure Parts RequiredDB-9 M DB-9 F Upgrade from Old PMU Trunking CardAdaptation from Old PMU Initial POWER-UP Terminal Setup PMU ProgrammingSoftware Initialization Sentry PMU REV 8.6 12/07/94 Time/Date/Password Antenna Mapping Power Sensor Calibration Unidirectional Power SensorsBi-directional Power Sensors Final Check Startup MonitorAlarms Power MeasurementsSWR Calculations Antenna Alarms Alarm ReportingTransmitter Alarms Excessive AlarmsParameters Channel PMU EnableSite PMU Enable PMU ModelOperation Antenna Lower Alarm Limit Transmitter Lower Alarm LimitTransmitter Upper Alarm Limit Antenna Upper Alarm LimitAlarm Limits As Installed Alarm Limit RE-CONFIGURATIONTransmitter Power Alarm Limits Antenna Power Alarm LimitsAntenna SWR Alarm Limit Alarm History Report Screen Time and Date AdjustmentDiagnostic Screens Channel Monitor ScreenAlarm History Report Site not Programmed Time Software Updates Erase ALL ProgrammingAlarm Delay Adjustment Troubleshooting Symptom Possible Causes Corrective ActionMaintenance Glossary GlossaryInterconnection Diagram PMU Interconnection Diagram Edacs Site Controller Cabinet

LBI-39128 specifications

Ericsson LBI-39128 is a comprehensive communication solution designed to meet the ever-evolving demands of modern telecommunications. It is renowned for its ability to enhance network performance while providing a robust framework for various communication technologies. This product primarily targets service providers, enabling them to maximize their operational efficiency and improve service delivery.

One of the key features of the LBI-39128 is its versatility in supporting multiple generation technologies, including 2G, 3G, LTE, and even 5G. This ensures that service providers can seamlessly integrate their existing infrastructure and gradually evolve towards more advanced network capabilities without the need for a complete overhaul. The product caters to a wide array of deployment scenarios, from urban environments with high user density to rural areas requiring expansive coverage.

In terms of network performance, the LBI-39128 excels with its advanced radio technologies. It employs Massive MIMO (Multiple Input Multiple Output) and beamforming techniques, which significantly enhance spectral efficiency and improve user experience. With multiple antennas transmitting and receiving signals simultaneously, users benefit from increased throughput and reduced latency, essential for applications such as video streaming and real-time communications.

Another critical characteristic of the Ericsson LBI-39128 is its focus on energy efficiency. The product integrates intelligent power management systems that optimize energy consumption, thereby reducing operational costs for service providers. This aligns with the growing emphasis on sustainable practices within the telecommunications industry.

Moreover, the LBI-39128 features advanced management and automation capabilities. Its network function virtualization (NFV) support enables operators to deploy virtualized network functions efficiently, allowing for dynamic scaling and resource allocation based on real-time demand. This agility is crucial for handling varying loads and enhancing the overall resilience of the network.

Security is also a primary consideration in the design of the LBI-39128. It incorporates robust encryption methods and secure access protocols to protect sensitive data and ensure the integrity of communication channels. This is particularly important in an age where cyber threats are becoming increasingly prevalent.

In summary, the Ericsson LBI-39128 is a state-of-the-art telecommunications solution that stands out due to its support for multiple technologies, advanced radio capabilities, energy efficiency, automated management, and robust security features. Its design reflects the needs of contemporary service providers, allowing them to build and sustain high-performance networks that meet the demands of future communications.