Timing and Synchronization performance
The Stellar-40 can be used as a source of time and offers multiple synchronization mechanism:
- Internal timestamping of all data
- PPS (Pulse per second)
- NTP (Network Time Protocol)
- PTP (Precise Time Protocol)
The accuracy of the clock and different synchronization mechanisms offered on the product is as follows:
| Parameter | Error | Comment |
|---|---|---|
Timestamp | < 200 ns | |
| NTP accuracy | 10 ms | NTP limitations |
PTP accuracy | <1 μs | |
| PPS accuracy | ~ 5-8 μs | |
| Drift in dead reckoning | 1 ppm | Drift of the internal clock measured over 1 hour. The drift is not completely linear with time so will be slightly higher for longer GNSS outages. |
For more details on the time and synchronization you can check our knowledge base article.