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OSA 6500B PRC - Primary Reference Clocks

OSA 6500B PRC - Primary Reference Clocks

Product catalog summary

Overview
The document discusses the OSA 6500B Primary Reference Clock (PRC) by Oscilloquartz, highlighting its role in network synchronization, which is crucial for telecommunications performance. The OSA 6500B is designed to meet and exceed international standards such as G.811, ETSI, and Telcordia, ensuring high precision and reliability.

Specifications
The OSA 6500B features a managed PRC with an interface to SyncView™, multiple Cesium primary references, and integrated GPS for UTC traceability. It offers ± 5x10^-12 accuracy, supports single-site or distributed configurations, and provides over 112 outputs. The system includes input qualification with MTIE & TDEV and SSM handling.

Architecture and Functionality
The OSA 6500B is equipped with Cesium and GPS references, a synchronization element, output distribution, alarms, management, and power supplies. It includes the OSA 5548B Stand Alone Synchronisation Element (SASE) for cost-effective management. The system supports up to three Cesium primary references and offers an optional integrated GPS receiver. Reference selection is managed via a priority table, with remote control capabilities.

Output and Interface
The system delivers up to 112 unprotected or 64 protected outputs, expandable with OSA 5530B subracks. It supports various output interfaces, including 2.048 Mbit/s, 2.048 MHz, 1.544 Mbit/s, 5 and 10 MHz. Outputs can be individually squelched, and SSM handling is configurable.

Alarms and Monitoring
The OSA 6500B provides comprehensive alarm reporting and remote monitoring. An alarm panel displays urgent and non-urgent alarms, and a local management port allows system configuration and event monitoring.

Remote Management
An Embedded System Manager (ESM) offers extensive management capabilities, integrating with Oscilloquartz’s SyncView™ and Local Manager. It supports spontaneous alarm reporting, equipment configuration, and real-time MTIE & TDEV calculations.

Decentralized PRC Arrangement
The document emphasizes the benefits of a decentralized PRC arrangement for large or complex networks, enhancing reliability by synchronizing nodes from multiple sources. The OSA 6500B, combined with SyncView™, supports this distributed approach.

Conclusion
The OSA 6500B PRC is a robust solution for network synchronization, offering flexibility, high output capacity, and comprehensive management features. It is suitable for both centralized and decentralized network configurations.

Catalog excerpts

OSA 6500B PRC - Primary Reference Clocks-1

! Managed PRC with interface to SyncView™ ! One or more Cesium primary references ! Exceeds G.811, ETSI and Telcordia requirements ! UTC traceability from integrated GPS Receiver ! User definable priority table ! ± 5x10-12 accuracy ! Single site or distributed configurations ! 112 or more outputs ! Input qualification of references with MTIE & TDEV ! SSM handling OSA 6500B PRC Primary Reference Clock

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OSA 6500B PRC - Primary Reference Clocks-2

Synchronisation significantly impacts network performance. The global demand for telecommunications is increasing at an incredible pace resulting in networks becoming more and more sophisticated. The same is true for synchronisation elements as they are fundamental to any telecommunications network. The quality and precision of clocking equipment has a significant impact on a network’s performance. Digital networks require a reliable supply of accurate and stable synchronisation. The ITU-T Recommendation G.811 states that a PRC provides the reference signal for the synchronisation of other clocks...

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OSA 6500B PRC - Primary Reference Clocks-3

The OSA 6500B achieves the objectives required for distributed and stand-alone PRCs especially when the system is controlled by the Oscilloquartz SyncView™ synchronisation management system. A typical 6500B rack comprises Cesium and GPS references, a synchronisation element, output distribution, alarms, management and power supplies. At the core of the OSA 6500B is an OSA 5548B Stand Alone Synchronisation Element (SASE) that handles many of the system’s primary functions. This reduces the cost of conventional PRC configurations and provides greater management capability. The OSA 6500B can be...

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OSA 6500B PRC - Primary Reference Clocks-4

Continuous reference OSA 6500B Primary Reference Clock Decentralised PRCs Many telecom operators opt for a decentralised PRC arrangement especially in large countries, complex networks or where network security is of paramount importance. The network is synchronised by several PRCs, which are at different geographical sites, to protect against site failures. This ensures a higher degree of reliability as the nodes receive references from at least two sources which are routed over separate paths. In a PDH environment, references from one PRC are provided to the other using dedicated 2.048 Mbit/s...

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OSA 6500B PRC - Primary Reference Clocks

OSA 6500B PRC - Primary Reference Clocks

Catalog excerpts

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