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What are some timing rules of thumb?

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What are some timing rules of thumb?

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A.1. A node can only receive the synchronization referencesignal from another node that contains a clock ofequivalent or superior quality (Stratum level).2. The facilities with the greatest availability (absence of outages) should be selected forsynchronization facilities.3. Where possible, all primary and secondary synchronization facilities should be diverse, and synchronization facilities within the same cable should be minimized.4. The total number of nodes in series from the stratum 1 source should be minimized. For example, the primary synchronization network would ideally look like a star configuration with the stratum 1 source at the center. The nodes connected to the star would branch out in decreasing stratum level from the center5.

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A. Here are some basic points: • A node can only receive the synchronization reference signal from another node that contains a clock of equivalent or superior quality (stratum level). • The facilities with the greatest availability (absence of outages) should be selected for synchronization facilities. • Where possible, all primary and secondary synchronization facilities should be diverse, and synchronization facilities within the same cable should be minimized. • The total number of nodes in series from the stratum 1 source should be minimized. For example, the primary synchronization network would ideally look like a star configuration with the stratum 1 source at the center. The nodes connected to the star would branch out in decreasing stratum level from the center. • No timing loops may be formed in any combination of primary.

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