Simulations of high resolution F_var spectra, assuming variations of single parameters (log ξ varying by ∼24%, covering factor varying by ∼4%, and N_H varying by ∼19–23%, as indicated in the upper corner of each plot) of obscurer #2 in NGC 3783. The black and light grey curves are, respectively, the F_var spectra excluding and including the contribution from the constant scattered emission and reflection components.