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SparkFun GNSS Timing Breakout - ZED-F9T (Qwiic) (GPS-18774)
影片參考:https://youtu.be/VLv5t8BKAbw
DESCRIPTION
The SparkFun GNSS Timing Breakout offers a unique entry into SparkFun's geospatial catalog featuring the ZED-F9T GNSS receiver from u-blox. The ZED-F9T provides up to five nanosecond timing accuracy under clear skies with no external GNSS correction making it perfect for applications where timing accuracy is imperative. Need an extremely accurate time reference to maximize the efficiency of your IoT network of 5G devices? The ZED-F9T GNSS Timing Breakout could be the perfect solution.
SparkFun GNSS Timing Breakout為SparkFun的地理空間目錄提供了一個獨特的入口，其中包括u-blox的ZED-F9T GNSS接收器。ZED-F9T 在晴朗的天空下提供高達 5 納秒的定時精度，無需外部 GNSS 校正，非常適合時序精度至關重要的應用。需要極其準確的時間參考，以最大限度地提高5G設備物聯網網路的效率？ZED-F9T GNSS定時突破可能是完美的解決方案。
The ZED-F9T is a multi-band GNSS module that supports L1/L2/E5b bands and operates on all major constellations (GPS, GLONASS, Galileo and BeiDou) concurrently making it extremely versatile and able to retain its timing precision even the module loses lock with one or more of the visible constellations.
ZED-F9T是一款多頻段GNSS模組，支援L1 / L2 / E5b波段，並同時在所有主要星座（GPS，GLONASS，Galileo和北鬥）上運行，使其用途極其廣泛，並且能夠保持其定時精度，即使模組與一個或多個可見星座失去鎖定。
This breakout shares a similar design as the SparkFun GPS-RTK-SMA Breakout to create a small but comprehensive development tool for the ZED-F9T. The design includes a USB-C connector for primary power and communication, two Qwiic connectors for communicating over I2C using the SparkFun Qwiic system, three SMA connectors for the antenna and timing pulse signals as well as a host of PTH pins allowing direct interaction with most of the ZED-F9T's pinout. The GNSS Timing Breakout also includes an on-board rechargeable backup battery that provides power to the RTC on the ZED-F9T. This reduces the time-to-first fix from a cold start (~24s) to a hot start (~2s).
該突破與SparkFun GPS-RTK-SMA Breakout具有類似的設計，為ZED-F9T創建了一個小型但全面的開發工具。該設計包括一個用於主電源和通信的 USB-C 連接器，兩個用於通過 I 進行通信的 Qwiic 連接器2C使用SparkFun Qwiic系統，三個SMA連接器用於天線和定時脈衝信號，以及許多PTH引腳，允許與大多數ZED-F9T的引腳排列直接交互。GNSS 定時分線器還包括一個板載可充電備用電池，可為 ZED-F9T 上的 RTC 供電。這將首次修復時間從冷啟動（~24s）縮短到熱啟動（~2s）。
The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
SparkFun Qwiic Connect System是I的一個生態系統。2C 型感測器、執行器、擴展板和電纜，使原型設計更快，更不容易出錯。所有支援 Qwiic 的電路板均使用通用的 1mm 間距 4 針 JST 連接器。這減少了所需的PCB空間量，並且極化連接意味著您不會將其錯誤地連接。
FEATURES
- Concurrent reception / 同時接收 of GPS, GLONASS, Galileo and BeiDou constellations
- Receives / 接收 L1/L2/E5b bands
- Voltage / 電壓 : 5V or 3.3V (all logic is 3.3V)
- Current / 電流 : 68mA - 130mA (varies depending on operating conditions and constellations)
- Fix Acquisition / 固定採集 : ~24s (Cold) / 2s (Hot)
- Time Pulse Signal Accuracy / 時間脈衝信號精度 :
- Absolute Timing Mode / 絕對定時模式 : 5ns
- Differential Timing Mode (with correction data) / 差分定時模式（帶校正數據） : 2.5ns
- Time Pulse Signal Frequency / 時間脈衝信號頻率 : 0.25Hz to 25MHz
- Time Pulse Signal Jitter / 時間脈衝信號抖動 : ±4ns
- Horizontal Position Accuracy / 水準位置精度 : 2.0m
- Max Altitude / 最高海拔 : 80km (49.7 miles)
- Max Velocity / 最大速度 : 500m.s (118mph)
- I2C Address: 0x42
- 2x Qwiic Connectors
DOCUMENTS
示意圖
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