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ADCLK854 Eval board LVDS swing measurement

Question asked by kevjzheng on Apr 17, 2012
Latest reply on Apr 18, 2012 by neilw



       Our lab recently purchased ADCLK854 eval board and we are testing the LVDS outputs and observed that the outputs wing does not go to 700mV full swing. The output signals are ac coupled so I guess it doesn't go full swing if SMA cable is connected. However, I have tried disconnecting SMA cable and probe the signal directly across the on board termination resistor, and still I am observing <80mV differential swing. Is there something I am doing wrong in measurement or is there a possibility that we have a malfunctioning board? Please advise.