Arbitrary waveform composite signal generator and signal generating method
A composite signal and arbitrary waveform technology, which is applied in the direction of instruments, pulse generation, special data processing applications, etc., can solve the problems of inability to generate and construct interference types, etc., and achieve the effects of strong versatility, small distortion, and convenient waveform generation
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[0042] Such as figure 1 , 2 As shown, the arbitrary waveform composite signal generator includes a local bus control module, a FIFO rate adjustment module, a D / A digital-to-analog conversion module, a low-pass filter, and an analog multiplier connected in sequence, and the local bus control module is also connected with The storage module is connected to the PCI bus controller and the PCI bus of the computer in turn through the local bus and the PCI bus pins. The analog multiplier is provided with a signal output port and a carrier input port, and is connected to an external signal source through the carrier input port.
[0043] The PCI bus controller adopts PLX9054 chip, which is connected to the PCI bus and the local bus. The clock on the PCI bus is provided by the computer, and the clock on the local bus is 40MHz, which is provided by the arbitrary waveform composite signal generator. When transferring data from the computer to the PLX9054 chip, the PLX9054 uses C mode and...
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