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Precise Time and Time Interval

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Precise Time and Time Interval is a Department of Defense Military Standard which details a mechanism and waveform for distributing highly accurate timing information.

It is similar to Pulse per second (PPS) because it indicates the start of each second using a pulse. PTTI also provides the full Time Of Day (TOD) in hours, minutes, and seconds.

DOD-STD-1399-441 Interface Standard for Shipboard Systems Section 441 Precise Time and Time Interval (PTTI)

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