I have an AD9913 evaluation board and I'm trying to monitor the SYNC_CLK signal at the J2 connector. There is no signal at this connector, just +1.8VDC. I have also probed the SYNC_CLK pin at the AD9913 device and found the same result. What should I expect to see for the SYNC_CLK signal at the J2 connector? Is there a way to access the SYNC_CLK enable/disable bit from the evaluation board GUI? Does the GUI default to SYNC_CLK enabled or disabled?