Gain Notes for Revolution 482
	
JEM-X1: A quite normal revolution with fine gain fitting. All the data from 
this revolution should be useable.
The Xe line analysis demonstrates that the gain correction has performed
well, to within about 1% of the ideal. As always it is recommended that
users avoid the first few science windows for applications requiring the very
best spectral/energy information since this is where the unit is settling down
after the switch on.

CAO 22/1/2008


JEM-X2: This unit was activated for the first time after a very long dormant
period in which the entire unit was shutdown to save telemetry. It was
reactivated in preparation for the Crab calibration in revolution 483. This 
unit was being prepared for various calibration and experimental activities
for most of this  revolution, including uploading old onboard software, which
took most of the revolution. During the first 2/3 of the revolution, there was
no useable science data and no useable gain history. Data produced in the
last 1/3 of the revolution will however, also give strange results due to the
old tables, rejection criteria etc. uploaded to the unit. DO NOT USE THIS
DATA FOR SCIENTIFIC PURPOSES!!!! Anyone wishing to use this data for instrument
calibration purposes should be sure to download the latest IC files for the
JEM-X2 instrument when using OSA 6.0. This revolution has now officially been
flagged a BTI for this instrument, i.e. period IJD= 2457.90 to 2460.80.


CAO 10/10/2006

JEM-X2: New Xe line analysis added after creation of new IMOD epochs 12 and 13 for
JEM-X2. The IC gain history table was also updated to reflect these new channels
and this lifted the average Xe line position from about 28.6 keV to 29.6 keV.

CAO 19/10/2007