Command
:MMEMory:STORe:CHANnel:CLEar
This command deletes the instrument state for each channel (saved with the :MMEM:STOR:CHAN) in all the registers.
Ana.WriteString ":MMEM:STOR:CHAN:CLE", True
Save/Recall > Save Channel > Clear States > OK
SCPI.MMEMORY.STORE.CHANNEL.CLEAR