Ericsson LBI-39128 manual Transmitter Lower Alarm Limit, Transmitter Upper Alarm Limit

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OPERATION

LBI-39128

Transmitter Lower Alarm Limit

The value of this parameter is used by the PMU as the lower alarm limit for each transmitter’s output power. A single value for this parameter (the same limit for all transmitter channels) is programmed into the Site Controller computer’s Personality PROMs by the factory, and is used to initially configure the Site Controller computer’s Active Configuration during power-up.

The value of this parameter may then be re-configured in the Site Controller computer’s Active Configuration through a System Manager. It will seem as though the System Manager is able to re-configure a different limit for each transmitter. However, the first non-zero value (ascending channel number order) will apply to all transmitters. If the system is not equipped with a System Manager, a workable value of this parameter must be programmed into the Personality PROMs by the factory (as opposed to a default value). The recommended value for this parameter is 50% of the transmitter’s full rated power output.

The value of this parameter is sent to the PMU during the EDACS Configuration Setup, where it is used by the PMU to determine if a transmitter’s output power is too low. The value of this parameter may be temporarily changed in the PMU (a different value may be assigned for each transmitter channel). These values will remain in effect until the next EDACS Configuration Setup.

Transmitter Upper Alarm Limit

This parameter is used by the PMU as the upper alarm limit for each transmitter’s output power. Its purpose is to detect when a transmitter or its power sensor is out of adjustment. The recommended value for this limit is 125% of the transmitter’s set output power (note that set power may be substantially below full rated power).

This parameter is not programmed into the Site Controller computer’s Personality PROMs and is therefore not re-configurable through a System Manager. The value of this parameter is only contained in the PMU.

A factory default value (125 watts) for this parameter has been programmed into the PMU. This factory default is used to configure the PMU’s Active Configuration any time the PMU is initialized. The value of this parameter may be re-configured with an RS232 CRT terminal connected to the PMU. This re-configuration will last until you deliberately initialize the PMU. This re-configuration permits a different upper alarm limit for each transmitter.

Antenna Lower Alarm Limit

This parameter is used by the PMU as the lower alarm limit for each antenna’s input power. Its purpose is to detect when the loss through the combiner is too high, or the antenna power sensor is damaged or out of adjustment. The recommended value for this limit is 25% of the set power output of a single transmitter.

This parameter is not programmed into the Site Controller computer’s Personality PROMs and is therefore not re-configurable through a System Manager. The value of this parameter is only contained in the PMU.

A factory default value (0.0 watts) for this parameter has been programmed into the PMU. This factory default is used to configure the PMU’s Active Configuration any time the PMU is initialized. The value of this parameter may be re-configured with an RS232 CRT terminal connected to the PMU. This re-configuration will last until you deliberately initialize the PMU. This re-configuration permits a different lower alarm limit for each antenna’s input power.

Note that if the lower alarm limit for the antenna’s input power is left at the factory default of 0.0 watts and both circuits of the antenna power sensor are disconnected from the PMU (or never were connected in the first place), the PMU will never report an alarm for this antenna.

Antenna Upper Alarm Limit

This parameter is used by the PMU as the upper alarm limit for each antenna’s input power. Its purpose is to detect when the antenna power sensor is damaged or out of adjustment. The recommended value for this limit is 75% of rated power of a single transmitter multiplied by the number of transmitters using the antenna.

This parameter is not programmed into the Site Controller computer’s Personality PROMs and is therefore not re-configurable through a System Manager. The value of this parameter is only contained in the PMU.

A factory default value (999.9 watts) for this parameter has been programmed into the PMU. This factory default is used to configure the PMU’s Active Configuration any time the PMU is initialized. The value of this parameter may be re-configured with an RS232 CRT terminal connected to the PMU. This re-configuration will last until you deliberately initialize the PMU. This re-configuration permits a different upper alarm limit for each antenna’s input power.

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Contents Installation & Operation Contents Table of Contents List of Figures and Tables Figures and TablesSpecifications SpecificationsLBI-39128 VAX Site Controller Computer Application Software PromsPersonality Proms Site Controller Software Site Controller HardwareAddition from No PMU PMU HardwareApplication Software PROMs Personality PROMsParts Required ProcedureDB-9 M DB-9 F Trunking Card Upgrade from Old PMUAdaptation from Old PMU Initial POWER-UP Terminal Setup PMU ProgrammingSoftware Initialization Sentry PMU REV 8.6 12/07/94 Time/Date/Password Antenna Mapping Unidirectional Power Sensors Power Sensor CalibrationBi-directional Power Sensors Final Check Monitor StartupAlarms Power MeasurementsSWR Calculations Excessive Alarms Alarm ReportingTransmitter Alarms Antenna AlarmsPMU Model Channel PMU EnableSite PMU Enable ParametersOperation Antenna Upper Alarm Limit Transmitter Lower Alarm LimitTransmitter Upper Alarm Limit Antenna Lower Alarm LimitAntenna Power Alarm Limits Alarm Limit RE-CONFIGURATIONTransmitter Power Alarm Limits Alarm Limits As InstalledAntenna SWR Alarm Limit Channel Monitor Screen Time and Date AdjustmentDiagnostic Screens Alarm History Report ScreenAlarm History Report Site not Programmed Time Erase ALL Programming Software UpdatesAlarm Delay Adjustment Symptom Possible Causes Corrective Action TroubleshootingMaintenance 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.
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