SBAS661C February 2015 – May 2021 ADS1262 , ADS1263
The offset system-calibration command corrects ADC2 system offset error. For this offset calibration, externally short the ADC2 inputs before sending the command. When the SYOCAL2 command is sent, the ADC averages 16 readings to reduce conversion noise for an accurate calibration. When calibration is complete, the calibration result is written to the 16-bit ADC2 offset calibration register (ADC2OFC[1:0)].