Gain Notes for Revolution 135 JEM-X2: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. First few points on each curve belong to the partial switch-on for which HV is set 3 steps below its nominal value. An unscheduled switch-off occurred towards the beginning of the revolution, causing different degrees of gain decay in the sources after reactivation. This in no way affects the science data since each decay is well fitted by the gain smoothing program. Clear glitches on sources 1 and 2. CAO 13/02/2006