|Telecom Solutions||090-40017-02||STE2E Rev F: DCD-CIM STRATUM-2 CLOCK||11|
|Telecom Solutions||090-40019-01||STE3E Rev F: DCD ST3-E FILTER CLOCK||2|
The DCD-523 is a synchronization and timing distribution system that provides the accurate clock references needed throughout your network to assure reliable synchronization. The DCD-523 platform addresses timing applications from Stratum 1 to Stratum 3. Its system architecture offers the enhanced reliability of a fault-tolerant network to address all existing and future timing/synchronization needs.
Modular design provides optimum flexibility. For example, Primary Reference Clock
(PRC) ST1 applications are provided by adding any of the TimeSource® products, or the DCD-LPR (Local Primary Reference) system to the input of the DCD-523 Multi-Reference Controller (MRC).
Or, for slave clock applications, the DCD-523 can be equipped with a variety of clocks, including the ST2E,TNC, and ST3E, with outputs in any timing signal format.
The DCD-523 is backwards compatible with most existing DCD cards. The user can migrate to the DCD-523 and preserve existing quality.
Management of the system is possible via the Version 5 cards. Inputs and outputs to and from the system can be provisioned, alarms and status can be retrieved, and performance data collected can be downloaded to analyze network performance. SSM messaging is supported by the Version 5 cards.
The redundant, on-line, ultra-stable, clocks filter the input timing signal to virtually eliminate phase transients, jitter and frequency wander feedthrough.If the input reference is lost or out of tolerance, the clocks provide highly stable holdover timing to allow the network to operate error-free for several hours of many days, depending on the clock installed (rubidium or quartz).
The performance level of each clock exceeds the relevant industry requirements in both locked and holdover modes.The ST3E is specifically designed for new synchronous transmission systems such as SONET. The ST2E improves upon those capabilities and provides fault tolerant clock performance suitable for
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