ACE-SEPICA ---------- DC offset data were loaded into spare SEPICA memory on September 11. This is part of a continuing effort to understand recent problems with deflection ("Y") measurements (See 2000-08-11 ACE report). Routine data processing was directed to the spare memory on Sept 12, and so far the results are promising. The next solar active period will fill in measurements that are not covered by the built-in calibration source. We should know then if the data processing is completely normal again. If we have fixed the problem by using a different section of memory, then the original memory might be damaged. ACE-SIS ------- On September 12, 14, and 22, commands were sent to the SIS instrument that are designed to improve the performance of the instrument during large SEP events. The SIS team is currently assessing the response of the instrument to these commands.