Gain Notes for Revolution 161 JEM-X2: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. First 2 points on each curve are the partial switch on of the instrument with HV set 3 steps below its nominal value. The HV switch off near the beginning of the revolution is well fitted and should not affect the science data. The gain decay seen after the re-activation is due to charge redistribution on the microstrip plate. From End-of-revolution report: a) 2004-02-07: JEM-X 2 was triggered to safe mode due to high radiations: 15:18 : JEM-X 2 triggered to safe mode 16:45 : JEM-X 2 back to data taking CAO 10/01/2006