Abstract
MT method is one of the hottest points of geophysics. The higher quality original data, the better result MT method done, so some high reliability and better functional observe system is urgent demand. The instrument usually need self-test in field, in order to make sure of the reliability of the observe system. This paper introduced a kind of self-test box including GPS, DTCXO, MCU, FPGA and DDS, and relate single chip, FPGA and the upper user control software. After several field surveys, the generator of sinusoid signal, pulse signal and pseudo-random signal also clarifies the effectiveness of the self-test box, taking into account of time sync and pseudo-random signal processing.
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