The signal of the detector has a wide dynamic range with over four orders of magnitude. The nature of the response is inherently nonlinear.
The Power Function Value (PFV) applies a power transformation to the data output of the detector. Power transformations can improve the linearity of response over a given range of interest.
The transformation is applied to the data output in real time. The data output is raised to the selected power.
As a standard, the Power Function is set to 1.00. For most applications and compounds, this is a good universal setting.
Guidelines for selecting a power function value
To optimize the power function value, observe the following guidelines:
An optimal power function value improves the linearity of response over a given range of interest.
Selecting the optimal value depends primarily on the analysis conditions and the desired range of quantitation.