In UVB and VIS, the total exposure time is the product of DIT (Detector Integration Time) and NEXP (Number of EXPosures): T = Texp × NEXP.
In NIR, the total exposure time is the product of DIT (Detector Integration Time), NDIT (Number of DITs) and NINT (Number of INTegrations): T = DIT × NDIT × NINT.