Gain Notes for Revolution 264 JEM-X1: A interesting revolution with fine gain smoothing. All data from this revolution should be useable even though there's lots of interest going on in this revolution. The clearest feature on all sources is the short unplanned switch-off that causes an unambigous gain decay on reactivation for all four sources. There's also a very strong glitch on source one just after the first full switch-on that threatens to derail the smoothing but doesn't quite manage it. The first two points of each data set are the partial switch-on with the High Voltage 3 steps below its nominal value. CAO 18/11/2005