LANTIME Oscillator Options
| OSCILLATOR OPTIONS |
TCXO | OCXO LQ | OCXO MQ | OCXO HQ | OCXO DHQ | Rubidium (only 3U models) |
| short term stability (τ = 1 sec) |
2·10-9 | 1·10-9 | 2·10-10 | 5·10-12 | 2·10-12 | 2·10-11 |
|---|---|---|---|---|---|---|
| accuracy of PPS (pulse per sec) |
< ±250 nsec | < ±250 nsec | < ±100 nsec | < ±100 nsec | < ±100 nsec | < ±100 nsec |
| phase noise | ||||||
| accuracy free run, one day |
±1·10-7 ±1Hz (Note1) |
±2·10-8 ±0.2Hz (Note1) |
±1.5·10-9 ±15mHz (Note1) |
±5·10-10 ±5mHz (Note1) |
±1·10-10 ±1mHz (Note1) |
±1·10-11 ±0.2mHz (Note1) |
| accuracy free run, one year |
±1·10-6 ±10Hz (Note1) |
±4·10-7 ±4Hz (Note1) |
±1·10-7 ±1Hz (Note1) |
±5·10-8 ±0.5Hz (Note1) |
±1·10-8 ±0.1Hz (Note1) |
±5·10-10 ±5mHz (Note1) |
| accuracy GPS-synchronous, averaged 24h |
±1·10-11 | ±1·10-11 | ±5·10-12 | ±1·10-12 | ±1·10-12 | ±1·10-12 |
| accuracy of time free run, one day |
± 4.3 msec | ± 865 µs | ± 65 µs | ± 22 µs | ± 4.5 µs | ± 800 ns |
| 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) |
Note 1: 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
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.
only valid for a constant ambient temperature! A minimum time of 24 hours of
GPS-syncronicity is required before free run starts.
