LimeSuite CLKGEN Error


I’d like to build a transmitter using a LimeSDR-USB with a higher sample rate. From what I’ve read in the tutorials for how to use LimeSuite, you set the sample rate using the CLKGEN tab, within the Frequency Controls box, and set the CLK_H field to eight times the desired sample rate. However, I get a set of errors whenever I set this field to anything greater than 127 MHz and attempt to calculate. Specifically these errors are:

In the log:
WARNING: SetPllFrequency: error configuring phase
ERROR: LML TX phase search FAIL

In a pop up window:
CLKGEN: failed to set interface frequency

What exactly am I missing? Thanks in advance!