I am using and ADS7 FPGA board and an AD9166 DAC board. The software I am using to control both is the AD ACE (analysis control evaluation) plus the DPG Downloader software.
My issue is the DAC has an Reference input which can be derived from the onboard clocks or an external clock.
I am trying to change from all internal clocking to internal clocking + external ref clock via J61
My questions are
(1) Which resistors do I need to change the position of to connect the external clock, on the schematic it is not too clear
(2) Can the external clock be a 10MHz reference from a sig gen or similar.
The issue I have is that I am using an FDAC frequency of 6GHz which is an input to the HMC7044 but this too high for the on board HMC7044 clock generation circuit which is limited to 3.2GHz