using external file to import to AD9162


I am trying to add data file (by using DPG Downloader software ) to AD9162 . i know that i have to Generate a file with the following criteria: a. Text file, signed integer b. One value per linec. minimum value= -2^(bits-1)-1, (for 16 bit DAC this is –(2^15-1) = -32767d. maximum value = 2^(bits-1)-1, (for 16 bit DAC this is (2^15-1) = 32767e. file length divisible by 256

my question is how to add complex data?  i have attached my data which comes out of complex waveform . could anyone help please.