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I Channel Output. 0dB. Unexpected Content. -10dB. -17dB. -20dB. -27dB. -30dB. -40dB. Expected Content. -50dB. -60dB. -70dB. 813. 748. 293. 228. 130. 260. 390. 520. 650. 780. 910. 2 identical real sine waves (32.5 MHz) on both I and Q input channels

phillip-pacheco
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  1. I Channel Output 0dB Unexpected Content -10dB -17dB -20dB -27dB -30dB -40dB Expected Content -50dB -60dB -70dB 813 748 293 228 130 260 390 520 650 780 910 • 2 identical real sine waves (32.5 MHz) on both I and Q input channels • Input Data Rate = 130 MHz • RefClk = 130 MHz • N1 = 2, N2 = 4 • F_Dac = 520 MHz • 4x Interpolation • Modulation = F_Dac/2 = 260 MHz

  2. Q Channel Output 0dB Unexpected Content -10dB -20dB -30dB -30dB -40dB -42dB Expected Content -50dB -60dB -70dB 813 748 293 228 130 260 390 520 650 780 910 • 2 identical real sine waves (32.5 MHz) on both I and Q input channels • Input Data Rate = 130 MHz • RefClk = 130 MHz • N1 = 2, N2 = 4 • F_Dac = 520 MHz • 4x Interpolation • Modulation = F_Dac/2 = 260 MHz

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