Thanks for the reply! That makes a lot of sense. I’m also testing the output clock (J18) from the LimeSDR and this is what I’m getting on my oscilloscope:
If you look in the bottom right (sorry for the bad quality) oscilloscope reads Vpp = about 30mV and max hovers around 15mV. I looked at the clock schematic and saw that the XO (Rakon E6245LF) goes into the clock buffer (LMK00105) after a few resistors and capacitors. This component outputs directly to Clk out J18 after R151 which is labeled NF. Does this stand for non-functional? If so, do I need to solder this connection to enable the external clock output? I can see on my Limesdr PCB that this is not currently soldered.
I will definitely look more closely at the documentation in the future to prevent from something bad happening!