Since the April 3, 2000 one of the two redundant TOF systems in ULEIS (TOF-1)
has not returned reliable data. Therefore the ULEIS team has turned off the
high voltage on the TOF-1 system to minimize the risk of high voltage
discharge.  The command was executed on June 19, 2000.  The ULEIS team has
found that the mass resolution from the remaining TOF-2 system is quite good,
and isotopes such as 3He and 22Ne are still resolved.

The other science instruments on ACE are not affected.