描述
LN CSAC GPSDO将铯参考振荡器与超高精度的恒温 SC切割晶体振荡器相结合，实现了xE-012范围内的超快预热、出色的保持特性、低功率、卓越的相位噪声和ADEV性能。两种振荡器的强强结合，能够与市场上具有完整封装的高性能铯参考时钟竞争，其价格比传统产品低一个数量级。LN CSAC提供GPS驯服、卓越的相位噪声、ADEV、保持性能、极低的功耗和非常小的尺寸。
LN CSAC GPSDO在形式、适用性和功能上与流行的CSAC GPSDO板兼容，并且对于从标准CSAC GPSDO平台升级的客户而言，不需要任何设计变更。
特点
- 3.88 X 3.0 X 0.9 英寸
- 超低噪声SC切割后置滤波器
- 110dBC/Hz@1Hz相位噪声
- 1E-012 ADEV稳定性@1s
- 内置分配放大器
技术参数
| Module Specification: | |||||
| Long-Term Oscillator Aging (without GPS -Zero aging with GPS) | Less than 0.3ppb per month in Holdover without GPS | ||||
| Frequency Stability Over Temperature | Better than ±0.5E-09 (CSAC only, no GPS Disciplining, 0°C to +75°C) | ||||
| 1 PPS Accuracy | ±15ns to UTC RMS (1-Sigma) GPS Locked in Position Hold mode | ||||
| Holdover Stability after 96 hours warmup | <±2us over 24 Hour Period @+25°C (after 20 minutes with GPS lock) | ||||
| ADEV (DOCXO after 24 hours with GPS lock) | 1s: <2E-12, 10s: <6E-12, 100s <7E-12, 1Ks: <7E-12, 10Ks: <2E-12 | ||||
| 1 PPS Output (CSAC Flywheel Generated) | 5V CMOS output, can be shifted in 1ns steps relative to UTC | ||||
| 10MHz Output, 5MHz Output | Four Isolated 10MHz Sine Wave +13dBm ±3dBm, one 5MHz CMOS 5V | ||||
| Distribution Amplifier Port Isolation | 2MHz: > 98dB, 10MHz: > 85dB | ||||
| RS-232/USB Control | SCPI-99 Control at 9.6K, 19.2K, 38.4K, 57.6K, 115.2K | ||||
| RS-232/USB NMEA Output Sentences | NMEA 0183 rev. 2.3, Sentences: GGA, RMC, ZDA, PASHR, and others | ||||
| GPS Frequency, Antenna | L1 C/A 1574MHz, Passive or Active Antenna 5V, MMCX Connector | ||||
| GPS Receiver | 50 Channels, Mobile, SBAS: WAAS, EGNOS, MSAS supported | ||||
| Sensitivity | Acquisition -144 dBm, Tracking -160 dBm | ||||
| GPS Receiver Motion Adaptive Filter Settings | Optimized depending on vehicle velocity (Auto-sensing, Auto-switching) | ||||
| TTL Alarm Output | GPS Unlock and Hardware Failure indicator | ||||
| Warm Up Time / Stabilization Time Without GPS | +25°C to <5E-010 Accuracy Typ: CSAC: <3 min, Filter: <12 min | ||||
| Supply Voltage (Vdd) | 12V ±1V | ||||
| Power Consumption | <5W at +25°C steady-state, <9W warmup | ||||
| Operating Temperature | -10°C to +70°C | ||||
| g-sensitivity | CSAC: <0.2ppb/g/axis, Filter: <0.3ppb/g/axis with low-g option | ||||
| Magnetic Sensitivity | Less than 0.4ppb per Gauss long term | ||||
| Storage Temperature | -45°C to +85°C | ||||
| MTBF | > 100,000 Hours (0°C to +70°C) | ||||
| USB, LCD support | RS-232 or USB controlled, supports 16×2 LCD Displays | ||||
| Ordering Options | Extended Temp Range DOCXO option, low-g ruggedized DOCXO option, SOCXO ultra-low-ADEV option | ||||
| Phase Noise (standard temp DOCXO option) | Offset | CSAC | Filter | ||
| 1Hz | NA | -100dBc/Hz | |||
| 10Hz | -90dBc/Hz | -135dBc/Hz | |||
| 100Hz | -125dBc/Hz | -145dBc/Hz | |||
| 1KHz | -145dBc/Hz | -150dBc/Hz | |||
| 10kHz | -152dBc/Hz | -155dBc/Hz | |||
| 100kHz | -153dBc/Hz | -155dBc/Hz | |||
