[Halld-tracking-hw] preamp/ADC range

[Gerard Visser]

Hi Fernando, Lubomir,
	In the FDC logbook record 468, top plot, the cutoff at about 1100 is evident. 
Is this corresponding to the saturation level of preamp output? And it looks a 
little 'odd' in that the spectrum cuts off without an accumulation of 
'maximum-amplitude' events - do we understand why it looks like this?
	The ADC itself should saturate only upon reaching 16384. This has of course 
been tested with other (non-preamp) input from fuction generator. [Reminder to 
all that at least with interim readout firmware and software the 12-bit ADC is 
mapped to 14-bit values.]
	Sincerely,

		Gerard