Gain Notes for Revolution 164 JEM-X2: A quite normal revolution with fine gain fitting. All the data from this revolution should be useable. First 32points on each curve are the partial switch on of the instrument with HV set 3 steps below its nominal value. Fair amount of glitch activity on all sources, but this shouldn't affect the science data at all. There is a small switch off period towards the end of the revolution, but this is well fitted and should have no effect on the gain correction. The rapid decay seen after the re-activation of the unit is due to charge redistribution on the microstrip plate. CAO 10/01/2006