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In the 3 plots below, I take the signal heights from the previous 3 pages, put them together and locate a 'global mean' for the whole detector, on the assumption that the signals should be the same for each channel. The values are 30, 85 and 298 ADC channels, for 70 mV, 200 mV and 600 mV, respectively.

This picture also appears in the big postscript file, pgs. 16-17.

The three means can be plotted vs. the spy-line voltage, as is done below. This only shows that no grand nonlinearities occur between the exit of the AMU and the ADC output (basically, the ADC chip):