How to adjust frequency resolution in Steady state modal?

Dear all,

I am trying to run a steady-state modal analysis for a particular frequency resolution, in a particular frequency range. What i can see is the lower and upper frequency, and number of points. However, I am not sure how to use the number of points to obtain the same frequency resolution (steps) as i want. For instance I want the results within a frequency range 0 - 1500 Hz with a step of 1.25 Hz.