Gain Notes for Revolution 297
	
A completely ordinary revolution. Gain smoothing is fine. All data from this
revolution should be useable. First two points in data set are pre-switch on of
High Voltage at 3 steps below its nominal setting. 

Xe line analysis shows that the gain correction for this revolution lies a little
too high (about 0.4 keV too high; ~1%). There is no clear explanation for this
since there is fine gain smoothing throughout the revolution, which suggests that
some form of hidden gain suppression has occurred at one of the calibration
areas on the plate. However the increase is quite small so all of
this data is fine for science analysis so long as users bear in mind that small
increases in energy in this revolution, compared to others, are not significant.

CAO 16/1/2007