User Manual - Rev AJ California InstrumentsMX Series 243Number Message String Cause Remedylimit" defined wave shape aretoo high and could damageamplifier.reduce fundamental frequencyprogrammed.23 "ALC or Impedancemust be off"Conflict between ALC andprogrammable impedancemode.Turn off ALC to useprogrammable impedance. Turnoff programmable impedance touse ALC.Table 10-1: Error Messages