I have a customer using the FMCDAQ2 board. They want to change the sample rate to 800MSPS. They have removed the 125MHz oscillator and are applying a 100MHz signal to the AD9523. From the specs on PLL2 in the AD9523, I think that they have driven this PLL out of range on the low side, range is 3.6GHz to 4.0GHz. Is there any hook in the user software that will allow them to change the N divider ratio to 40 and the VCO output divider to 5 so that the VCO is operating at 4GHz?