The Analog to Digital Converter (ADC), and the programmable offsets and
gains control are shared by the SW and the LW channels. The offset is
automatically set and the observer must choose the gain. A gain
2 for SW is recommended, which provides a good sampling of the
noise, while preserving the whole dynamic range of the array. In these
conditions, one Analog to Digital Unit - hereafter ADU - corresponds
to 360 e
, the pixel saturates at 3000 ADU, and the noise is 2 ADU
rms.