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profile trigger in AD9910

Question asked by LLDKong on Feb 12, 2016
Latest reply on Feb 17, 2016 by JLKeip

Hi there,

  I am using FPGA to send control words to AD9910 but I want to trigger the output with a HIGH TTL signal from a NI data acquistion card. I am confusing that if I should common ground the AD9910, FPGA and the NI card? If I do, will it cause any problem if one of them out of order and cause big current flow into the ground?