[Halld-tracking-hw] signal delays

[Gerard Visser]

Hi Lubomir,
	The y axis is in 14-bit ADC units, meaning that for the actual 12-bit ADC code 
0-4095 one should divide by 4.
	This can be scaled of course to Volts at the output of the shaper (FYI that 
runs from 0.5 to 2.5 V nominally for 0-4095 out from the ADC. But this is an 
inaccessible internal point, you don't actually have any reason to care about 
this. For *DC* input to the module it corresponds roughly to -220 mV to +220 mV 
*differential* on the input connector. But of course at other frequencies the 
gain is intentionally altered by the equalization and shaping filters. And of 
course it is altered by the cable itself!)
	I will cc this to the list as others may have same question...

	Gerard

Lubomir Pentchev wrote:
> Hi Fernando,
> 
> As for the units, these are the raw data points as cooked by the fADC: x 
> is the sample number (i.e. in 8ns units) and for the amplitudes I 
> actually don't know what the units are. Gerard, could you explain us how 
> to calculate the y-scale units.
> ...