B&K Precision 1739 - Manual - Manual (Page 30)

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Er 20: CC not high
Er 21: CV not low
Er 22: DAC out of range
Er 23: ADC out of range
Er 24: ADC system calibration failed
Er 25: DAC zero voltage constant checksum failed
Er 26: ADC zero voltage constant checksum failed
Full voltage calibration errors:
Er 30: CC not high
Er 31: CV not low
Er 32: DAC out of range
Er 33: ADC out of range
Er 34: ADC system calibration failed
Er 35: DAC full voltage constant checksum failed
Er 36: ADC full voltage constant checksum failed
Zero current calibration errors:
Er 40: CC not low
Er 41: CV not high
Er 42: DAC out of range
Er 43: ADC out of range
Er 44: ADC system calibration failed
Er 45: DAC zero current constant checksum failed
Er 46: ADC zero current constant checksum failed
Full current calibration errors:
Er 50: CC not low
Er 51: CV not high
Er 52: DAC out of range
Er 53: ADC out of range
Er 54: ADC system calibration failed
Er 55: DAC full current constant checksum failed
Er 56: ADC full current constant checksum failed