Ericsson LBI-39128 manual Alarm Delay Adjustment

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MAINTENANCE

LBI-39128

want to return the PMU’s parameters to the factory default values, use the Software Initialization process described in the Installation section (its much easier).

Use the following procedure to erase all programming. Note that this will undo all programming by the user (including antenna mapping during installation).

1.Switch the PMU’s On-Off switch to the off position.

2.Label and disconnect all cables and wires connected to the PMU.

3.Remove the PMU from the cabinet and remove the top cover.

4.Set DIP switch #1 to the on position as shown in Figure 27.

ON

 

OFF

 

1

8

= Moveable Button

Figure 27 - Location of DIP Switches

5.Return the PMU to the cabinet and re-connect just the DC power wires.

6.Switch the PMU’s On-Off switch to the on position for a few seconds, and then back to the off position.

7.Disconnect the DC power wires and remove the PMU from the cabinet.

8.Return DIP switch #1 to the off position. (If you forget to set DIP switch #1 back to the off position, user programming is erased each time it is powered on.)

9.Replace the top cover on the PMU, and re-mount the PMU in the cabinet.

10.Re-connect all wires and cables disconnected in step 2.

11.Switch the PMU’s On-Off switch to the on position.

Don’t forget to redo any necessary programming (including antenna mapping). See the Programming heading in the Installation section.

ALARM DELAY ADJUSTMENT

The Alarm Delay parameter determines the delay between when the PMU first receives information that a transmitter channel is being keyed and when the PMU starts reporting an alarm (if there is an alarm) for that transmitter channel. This delay is necessary to prevent the PMU from reporting an alarm before the transmitter is actually turned on or before it has had a chance to reach full power.

This parameter has been given the default value of 3. However, in some systems it may be necessary to increase this value to as much as 8. The larger the number , the longer the delay, and the lower the probability of an alarm being reported when everything is OK. However, the longer the delay, the more frequently a call will be too short to be monitored by the PMU. Therefore, it is desirable to use as low a value as possible. Never use a value lower than 3.

The value of this parameter may be changed in the PMU’s Active Configuration through an RS232 CRT terminal connected to the PMU. See the PMU Programming heading in the Installation section to set up the terminal and obtain programming access.

To increase the value of the Alarm Delay parameter, use the following procedure:

1.With the Operational Select Menu (main menu) showing on the terminal, type 4 (for item #4 - Setup) and press the Enter key.

2.With the Setup Selection Menu shown on the terminal, type 4 (for item #4 - Analog Input Channel) and press the Enter key.

3.At the “Enter Channel Number” prompt, type the channel number of the transmitter and press the Enter key. The Analog Input Channel screen for that transmitter channel should then appear on the terminal.

4.Type 5 (for item #5 - Alarm Delay) and press the Enter key.

5.At the “Enter New Data” prompt, type the new value (never use a value less than 3) and press the Enter key. The screen should then be updated to show the new value.

6.Type E (to End programming this channel) and press the Enter key. The Setup Selection Menu should then appear on the terminal.

This completes the re-configuration of the Alarm Delay parameter for the selected transmitter channel number. This parameter should be re-configured the same for all

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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 HardwareApplication Software PROMs PMU HardwarePersonality PROMs Addition from No PMUParts 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 Transmitter Alarms Alarm ReportingAntenna Alarms Excessive AlarmsSite PMU Enable Channel PMU EnableParameters PMU ModelOperation Transmitter Upper Alarm Limit Transmitter Lower Alarm LimitAntenna Lower Alarm Limit Antenna Upper Alarm LimitTransmitter Power Alarm Limits Alarm Limit RE-CONFIGURATIONAlarm Limits As Installed Antenna Power Alarm LimitsAntenna SWR Alarm Limit Diagnostic Screens Time and Date AdjustmentAlarm History Report Screen Channel Monitor 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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