描述
FireFly-IIA是一款非常小的GPSDO，具有内置分配放大器和具有-160dBm跟踪能力的高性能50通道GPS接收机。FireFly-IIA与FireFly II GPSDO在形式、安装和功能上向后兼容，并在相同的占位面积内提供更高的性能和附加功能。此外，FireFly-IIA还为航空电子系统提供3D速度矢量、姿态/倾斜信息、速度、航向、高度（MSL和GPS高度）、位置、时间、日期、频率、时间戳和健康信息，为机载应用提供特殊支持。
特点
- 尺寸仅1.5 x 3 x 0.8英寸
- 出色的保持稳定性
- 双恒温SC切割晶体
- 内置10MHz分配放大器，带3个隔离输出（>80dB）
技术参数
| 模块参数 | |
| 1 PPS Accuracy | ±30ns to UTC RMS (1-Sigma) GPS Locked |
| Frequency Accuracy | Better than ±3E-010 after 3 hours operation with GPS locked |
| Holdover Stability | <±7us over 24 Hour Period @+25°C (No Motion) |
| ADEV | 0.1s to 1000s: <5E-11 with GPS lock |
| 1 PPS Output (OCXO Flywheel Generated) | LVDS output, RS-232 level output |
| 10MHz Output | Two LVDS and three Isolated Sine Wave at +13dBm ±3dBm |
| Distribution Amplifier Port Isolation | 2MHz: > 98dB, 10MHz: > 92dB, 1GHz: > 92dB |
| RS-232 Control | Full control via SCPI-99 Control Commands |
| GPS Frequency | L1, C/A 1574MHz |
| GPS Antenna | Passive or Active, 5V |
| GPS Receiver | 50 Channels, Mobile, GPS, WAAS, EGNOS, MSAS supported, Galileo ready |
| Sensitivity | Acquisition -144 dBm |
| TTFF | Tracking -160 dBm |
| TTL Alarm Output | Cold Start – <45 sec, Warm Start – 1 sec, Hot Start – 1 sec |
| Warm Up Time / Stabilization Time | GPS Unlock and Hardware Failure indicator |
| Supply Voltage (Vdd) | <10 min at +25°C to 1E-09 Accuracy Typ. |
| Power Consumption | 12 VDC Nominal ±5%
<4W at +25°C |
| Operating Temperature | 0°C to +75°C (-25C to +75C extended temp range available) |
| Storage Temperature | -45°C to +85°C |
| 晶振参数 | |
| Frequency Output | 10MHz |
| 10MHz Retrace | ±2E-08 After 1 Hour |
| Frequency Stability Over Temperature | ±2.5E-010 |
| Output Amplitude | Output Isolation: >80dB, +13dBm ±3dBm, LVDS +/-300mV |
| Warm Up Time | < 12 min |
| Phase Noise | 1Hz -90dBc/Hz
10Hz -120dBc/Hz 100Hz -140dBc/Hz 1kHz -150dBc/Hz 10kHz -155dBc/Hz |
| Also Available | |
| Single oven standard temp | |
| Double Oven – Extended Temperature Option | |
| Double Oven – Ultra-Extended Temperature Option | |
| DESIGNED LIFETIME > 10 YEARS |
