Lastly, some functional tests are taken, such as signal regulation circuit test, LCD display test, GPS signal receiving and sending test, steering data test.
最后进行的功能测试，包括信号调理电路测试，LCD显示测试，GPS信号收发测试，行驶状态数据测试等。
In addition, the redundancy mechanism by double-sending the embedded database data and the system test data enhanced the system reliability.
系统测试代码的发送采用数据库内置测试码与系统固化测试码双重发送的冗余机制，进一步提高了测试的可靠性。
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