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Spirent KB Article
Doc ID: FAQ15085
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Spirent TestCenter: How much accuracy can we expect for IEEE1588v2 clients when STC is master clock, which is in Sync with GPS receiver?
GPS clock synchronizes the chassis internal clock.
When STC emulates a 1588 Master clock it gets its clock from the Chassis clock.
Note: It gets only the seconds value of the chassis clock and uses that as a basis to add in the hardware timestamp on the card.
Thus if the chassis gets it’s time of day time from GPS, then in some regards we are using it as a basis for our 1588v2 emulated time of day.
Product : Product,Hardware,IEEE 1588