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GEN7iB

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GEN series SYNCHRONIZATION METHODS

The PTP synchronization process “oscillates” due to a certain control strategy. To align

PTP synchronization and Master/Sync synchronization the amount of oscillation in

thisPTPsynchronizationprocessneedstobesucientlylarge.Infact,thisrequired

oscillation range exceeds the tightest PTP tolerance of 150 ns. Therefore, once a main-

frameissettobeaMSMaster,thePTPtolerancewillbexedto1000ns*.

Fig. 14.11 Fixed PTP tolerance

A Sync source: PTP (or GPS OTMC 100)

B Master/Sync mode: Master

C PTPTolerance:xed1000ns

Notice

* When selecting IRIG GMR1000 as Sync source, this will always x the PTP tolerance to

2000ns, independent of stand-alone or being MS Master, due to the nature of the IRIG

synchronization signal jitter.

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HBK GEN7iB GEN Series Specifications

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