document Urukul nonlinearity #41
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https://forum.m-labs.hk/d/445-nonlinear-urukul-dds-amplitude
This looks nowhere as bad as the plot on the forum, even with no attenuation & ASF=1.
How was this data obtained?
Urukul 4410 direct attached to an oscilloscope with 50 Ohm termination in the scope. Value obtained from the scope.
6d9faa7b
Added plots to demonstrate the impact of attenuation on linearity.
Chose 15dB attenuation just for consistency with the SU-Servo example, which chose 15dB attenuation to maintain linearity.