The next-generation Earth radiation budget (ERB) satellite instrument, Libera, has been built and will be launched in 2027 to provide continuity of the climate-critical ERB data record. Libera will include as part of its instrument package a new “split-shortwave” (SSW) radiometer that, in combination with the heritage shortwave radiometer, will measure visible (VIS; 0.3 to 0.7 μm) and near-infrared (0.7 to 5.0 μm) radiance. It is essential to convert the measured radiance to the energetically-relevant quantity of irradiance for anticipated SSW science applications such as quantifying the partitioning of shortwave of energy within the Earth system. An implementation plan for SSW radiance-to-irradiance conversion has been developed, which is centered around another new addition to the Libera instrument package: a wide-field-of-view camera. However, the camera-based conversion approach is experimental and requires evaluation. This poster will show how operation of the Libera radiometers in Earth Target mode, where the instrument scans a given location on Earth from different angles as the satellite overpasses, can be used to assess uncertainty of instantaneous SSW irradiance. Simulated examples of Earth Target scans will be presented and challenges associated with changes in the radiometer footprint size and shape will be discussed. Results from this work are being used to inform when, where, and how Earth Target scans will be utilized during the Libera mission.