I am using set_center_freq(center_freq) in my python script to retune my
USRP to various center frequencies. Does this command use the smartest
retune technique to get to the new frequency?

For example, if I want to retune from 900.000 MHz to 900.001 MHz ( a 1 kHz
change), will it use DSP tuning instead of RF tuning for speed? Is there a
way to control this through python?

In my testing, it seems the retune time is constant whether I make a 1 GHz
hop, a 3 MHz hop or a 1 kHz hop, which makes me think I'm overlooking
something.

Thanks,
Rich
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