描述
Mini PCIe GPSDO模块支持为NTP、SNTP、GPSD、PTP/1588和其他行业标准应用提供纳秒级定时，以及超低相位噪声20MHz输出，适用于关键任务金融交易计时，以及任何其他需要高精度时间、频率和位置参考的应用。
Mini PCIe频率和定时模块集成了65通道GPS接收机，支持WAAS、QZSS和SBAS，滤波电源，Mini PCIe超小尺寸上设计了一个软件驯服的超稳晶振。Mini PCIe模块在其板载20MHz和1PPS CMOS输出上使用真正的模拟晶体调节，实现卓越的超低相位噪声、Allan Deviation（ADEV）和抖动性能。
Mini PCIe模块通常提供优于十亿分之一（1ppb）的频率精度，提供平均优于10纳秒的时间精度，Mini PCIe尺寸可以被集成到服务器、嵌入式PC、平板电脑和笔记本电脑中，并且还可以通过标准USB电缆在标准Mini-PCIe-to-USB适配器的支持下从外部连接到任何计算机。
Mini PCIe模块与所有支持标准USB功能的全长Mini PCIe连接器以及通过集成USB功能的Mini SSD mSATA连接器兼容。
特点
- 迷你PCIe外形尺寸
- 金融交易时间戳和其他嵌入式应用
- 20MHz、1PPS、LOCK-OK输出
- 集成65通道SBAS GPS
- 内置USB接口
技术参数
| Module Specification: | ||||
| 1 PPS Timing Accuracy from GPS receiver | <10ns to UTC RMS (1-Sigma) GPS Locked | |||
| Holdover Stability (1 week with GPS) | <±50us over 3 Hour Period @+25°C (No Motion, No Airflow) | |||
| 1 PPS Output | 3.3VDC CMOS, as well as on DCD# pin of COM port for NTP/1588 | |||
| Serial Port | COM Port, NMEA Output with Oscillator Status/Health sentence | |||
| GPS Frequency | L1, C/A 1574MHz | |||
| GPS Antenna | Active or Passive (0dB to +30dB gain) | |||
| GPS Receiver | 65 Channels, QZSS, SBAS WAAS, EGNOS, MSAS capable | |||
| Sensitivity | Acquisition –148 dBm, Tracking -165 dBm | |||
| GPS TTFF | Cold Start – <32 sec, Warm Start – 1 sec, Hot Start – 1 sec | |||
| ADEV | 10s: <7E-011, 10Ks: <2E-012 (GPS Locked, 25°C, no motion, no airflow) | |||
| TTL Alarm Output | CMOS LOCK indicator, LOCK LED | |||
| Warm Up Time / Stabilization Time | <10 min at +25°C to better than 1E-09 Accuracy | |||
| Supply Voltage (Vdd) | Via Mini-PCIe connector, 3.3V Single-Supply, +0.2V/-0.15V | |||
| Power Consumption | <0.2W | |||
| Operating Temperature | -10°C to +70°C, -40°C to +85°C optional | |||
| Additional Features | Can be connected to standard USB port via adaptor, U.Fl coax connectors for 1PPS/20MHz/LOCK-OK/GPS antenna | |||
| Oscillator Specification: | ||||
| Frequency Output of low Phase Noise crystal | 20MHz CMOS 3Vpp on U.Fl coax connector | |||
| Optional Synthesized CMOS output (Phase-Locked to 20MHz) | Resistor-Stuffing selectable: 80MHz/40MHz/26.666MHz/16MHz/13.333MHz/10MHz/5MHz | |||
| 20MHz Retrace | ±2E-08 After 1 Hour @ +25°C without GPS | |||
| Frequency Stability Over Temperature (0°C to +60°C) | ±100ppb (without GPS) | |||
| RF Output Amplitude | 3Vpp CMOS | |||
| 20MHz Phase Jitter (100Hz to 10MHz) | <0.135ps rms | |||
| Phase Noise | 10MHz TCXO | |||
| 1Hz | <-68dBc/Hz | |||
| 10Hz | <-98dBc/Hz | |||
| 100Hz | <-122dBc/Hz | |||
| 1kHz | <-142dBc/Hz | |||
| 10kHz | <-152dBc/Hz | |||
| 100KHz | <-155dBc/Hz | |||
| Connections: | Connector Type: | |||
| 1PPS CMOS Output, 20MHz CMOS Output, LOCK-OK CMOS Output, power, USB, antenna input | Mini-PCIe standard (USB interface), U.Fl coaxial | |||
