I am evaluating the AD9272, using the AD9272-EBZ evaluation board. When I scope the DCO_P vs DCO_N I see nothing on the scope (sample interval 5ns). I can see a 40MHz on FCO. I have disconnected the SPI jumpers so understand that the chip should be operating in default mode. The oscillator is enabled. There is nothing connected to the AD9272-EBZ, i.e. no data acquisition board.
I was expecting to see something similar to Figure 63 in the AD9272 datasheet.