Gain Notes for Revolution 200 JEM-X1: A quite normal revolution with fine gain smoothing. All data from this revolution should be useable. The first few points in each curve are from the partial switch-on at the beginning of the revolution, for which HV is set 3 steps below its nominal value. All sources show clear fast relaxation due to charging of the plate. This causes a rapid gain decay after the initial switch on. CAO 5/12/2005