NMR Data size
digital resolution (DR) as the number of Hz per point  in the FID for a given spectral width.
DR = SW / SI SW - spectral width (Hz)
SI - data size (points)
Remember: SR = 1 / (2 * SW)
Also: SW = 1/2DW 
Dwell time DW
TD
A Number of Interdependent Values (calculated automatically)
AQ = TD * DW= TD/2SWH
Total Data Acquisition Time:
Should be long enough to
allow complete delay of FID
Higher Digital Resolution requires longer acquisition times