Static measurement of DAC linearity possible?

Bit #13 and bit #15 in a real CD player from the Linearity Test CD. Unadjusted yet.
 

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This is not 'static testing' rather with a sinewave but seems quite relevant to testing DAC INL/DNL : https://pico-adc.markomo.me/INL-DNL/

The focus is testing the ADC in the Raspberry Pi Pico MCU, but since that chip's using an SAR technique, its using a DAC internally. He even works out a best fit of the bit weights using a Python program, based on the INL measurement. Pretty impressive to me.
 
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