I’m hoping to get some help with an issue I’ve been having. I’m trying to get a synchronized 1PPS signal and 30.74MHz from the AD9545, AD9545's REF is from GPS's 1PPS, it works at Internal Zero Delay mode. AD9545's DPLL state is freq lock but its phase is not lock, and the output freq 30.74MHz seems is not stable through the test in oscilloscope. When I shut down GPS's 1PPS, the PLL works at freerun mode without refrence clock, the output freq 30.74MHz is stable.
Attached is my settings file. Any help would be much appreciated!