Gain Notes for Revolution 206 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 just after switch on, which is however, well fitted. During PIDs 1 to 62 the wrong CPU clock speed was used (8MHz), and so this time period has officially been declared a BTI, and the ISDC software will disregard science data from this period. The BTI is IJD= 1632.70 to 1635.39. CAO 10/11/2006