The test data of bit error rate and signal-to-noise ratio show that the performance of the receiver terminal is available, which guarantees the accuracy of the data after the forward error correction.

The technology of based on the low power MCU of MSP430F449 and energy measurement IC of CS5460 which is a highlight of low power, low cost and high accuracy measuring terminal.

Because clocking frequency of sending terminal is changed with times at lower cost and simple circuit, accuracy of receiving end sampled data and audio - data recovery is assured.