Time Synchronization Server
A time synchronization server gives every device in a system the same time reference, so that event records from different devices can be compared. In a power system, that means protection relays, meters, recorders and control systems all stamping events with the same clock.
The manufacturer's time servers take time from satellite signals: GB8007 and GB8005 take time from BeiDou, GPS, GLONASS and Galileo signals, while GB8002 takes time from BeiDou, GPS, GLONASS and CDMA signals, and does not list Galileo. They distribute it by NTP, SNTP, PTP and IRIG-B. The GB8007 datasheet gives timing accuracy of 100 nanoseconds or better unidirectional and 20 nanoseconds or better bidirectional, with an OCXO oscillator. Interface counts differ between models, so the models' interface tables should not be merged; compare them model by model.
Selection starts from the devices to be synchronized: which protocols they accept, how many outputs are needed, and what accuracy the application requires. Then check satellite reception at the site: an antenna location with a clear sky view matters as much as the server itself. A server with no satellite signal is a clock with no reference.
Before ordering, confirm the model, the satellite systems, the output protocols and channel counts, the antenna requirements, and the delivery terms. Ask for the current datasheet to be confirmed in writing before ordering.
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What to confirm before ordering
Before payment, confirm the model, the specification from the current datasheet, the quantity, the price, the lead time, and the delivery terms, in writing. Ask in your inquiry to confirm the payment terms, the trade terms, and the reply time you should expect, rather than assuming any of them. No price, minimum order or lead time figure is stated on this site.
Send an inquiry: include the model, the test or measurement requirement, and the quantity you need. Before payment, confirm the model, the specification from the current datasheet, the quantity, and the delivery terms.