User Manual

27
7 Error Messages
The following types of errors may occur:
• Self-test errors
• Calibration errors
• Command errors
The first two types of errors are displayed on the voltage display as: Er xx, where xx is
a number. The command errors are sent through the RS232 interface.
7.1 Self-Test Errors
Er 01: EEPROM does not respond
Er 02: CV not high
Er 03: CV not low
Er 04: CC not high
Er 05: CC not low
Er 06: ADC does not respond
Er 07: ADC not ready
Er 08: No reference voltage
Er 09: ADC conversion error
Er 10: ADC AVdd< 3.0V
Er 11: ADC AVdd> 3.6V
Er 12: Calibration constants checksum failed
7.2 Calibration Errors
Zero voltage calibration errors
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