Clear Arb memory is provided for cases where you have created multiple patterns that will not fit in the Arb memory at the same time. This state may be indicated by a memory full error while downloading a pattern. Clear the Arb memory and download the pattern again. Multiple patterns can be loaded into the Arb at the same time. Switching between the patterns is done by selecting the desired pattern on the Pattern Details page of the N7620B software and executing a play command.