By default, our satellite controlled clocks are shipped with the OCXO LQ oscillator. You can order other oscillators with higher accuracy as an option:
Accuracy of frequency outputs of Meinberg GPS Receivers with different oscillator options
| TCXO | OCXO LQ | OCXO MQ | OCXO HQ | OCXO DHQ | Rubidium (only available for 3U models) |
|
|---|---|---|---|---|---|---|
| accuracy of time free run, one day |
± 4.3 msec | ± 865 µs | ± 65 µs | ± 22 µs | ± 4.5 µs | ± 1.1 µs |
| accuracy of time free run, one year |
± 16 s | ± 6.3 s | ± 1.6 s | ± 788 ms | ± 158 ms | ± 8 ms |
| temperature dependant drift free run |
±1·10-6 (-20...70°C) |
±2·10-7 (0...60°C) |
±5·10-8 (-20...70°C) |
±1·10-8 (5...70°C) |
±2·10-10 (5...70°C) |
±6·10-10 (-25...70°C) |
The accuracy in Hertz is based on the standard frequency of 10 MHz. For example: Accuracy of TCXO (free run one day) is ±1·10-7·10MHz = ± 1 HZ
The given values for the accuracy of frequency and time (not short term accuracy) are only valid for a constant ambient temperature! A minimum time of 24 hours of GPS-syncronicity is required before free run starts.