The reference wavelength become a mandatory parameter in all SED modes. This will be used by the AOT logic to optimize the selection of the appropriate intergration capacitance and maximize the use of the available dynamic range.

- Implication for user: Observers are invited to provide flux estimates at reference wavelength for all PACS Range Spectroscopy observations. The coming AOT release (to be used for i.e. Science Demonstration Phase) will calculate the optimum use of detector dynamic range based on user input. In case flux estimates are not provided then the logic assumes high-continuum source and bright lines and will select the largest integration capacitor to prevent detectors from saturation. In this configuration a faint source could have reduced S/N even thought the integration time is properly adjusted. Please note, sensitivity estimates in HSpot assume the optimal use of dynamic range. Further information on flux ranges per integration capacitor will be provided in the PACS Users Manual once upon the completition of the Performance Verification Phase.