Gain Notes for Revolution 512 JEM-X1: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable.The Xe line position is consistently too high except for the usual problem interval just after switch on. Until new calibration of the reference channels is done for this revolution, it is generally safe to assume that the gain correction is about 1-2% too high. JEM-X2: No scientific data or gain history for this unit. CAO 5/2/2007