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+# LiDAR UTC Time Synchronization
+
+LiDAR UTC time synchronization demo shows how to synchronize time data (GPRMC/GNRMC) from serial port to Livox LiDAR.
+
+## 1. Set Serial Port Name
+
+Serial port name indicates where to read time data. Serial port name is set to : (1) `COM3` on Windows; (2) `/dev/ttyUSB0` on Linux by default. you can call `SetPortName (std::string port_name)` to set your synchronizer's serial port name.
+
+## 2. Set Baud Rate
+
+Baud rate is set to `BR9600` (9600) by default，you can call `SetBaudRate (BaudRate baudrate)` to set baud rate：
+
+| BaudRate  |
+| --------- |
+| BR2400    |
+| BR4800    |
+| BR9600    |
+| BR19200   |
+| BR38400   |
+| BR57600   |
+| BR115200  |
+| BR230400  |
+| BR460800  |
+| BR500000  |
+| BR576000  |
+| BR921600  |
+| BR1152000 |
+| BR1500000 |
+| BR2000000 |
+| BR2500000 |
+| BR3000000 |
+| BR3500000 |
+| BR4000000 |
+
+## 3. Set Parity
+
+Parity is set to `P_8N1`(No parity) by default，you can call `SetParity(Parity parity)` to set parity :
+
+| Parity                                                       |
+| ------------------------------------------------------------ |
+| P_8N1   /* No parity (8N1)	*/                             |
+| P_7E1   /* Even parity (7E1)*/                               |
+| P_7O1    /* Odd parity (7O1)	*/                           |
+| P_7S1     /* Space parity is setup the same as no parity (7S1)	*/ |
+
+**Note**
+
+​	Livox-SDK release version <= 2.0.0 doesn't support to synchronize Mid40. It will be fix in next release.
+
+​    Or you can refer to [Mid40's UTC synchronization](https://github.com/Livox-SDK/Livox-SDK/issues/31) to resolve the problem temporarily.
+