Load Maps
Use the Load Map tool to import/create multiple channels (load histories) which are then paired with subcases/loadsteps to create the fatigue events.

Figure 1.
The information displayed in this dialog is dynamic. The available options change depending on the load type and the channel type.
| Type of Loading | Channel Type | 
|---|---|
| Time Series | Time
                                    Data Constant Amplitude Block Loading Duty Cycle (*.dcy) | 
| Transient Response | Transient Response | 
| Modal Superposition | Eigen Value
                                    (*.pch) CMS (*.mrf) | 
| Random (PSD Stresses) | PSD Stress | 
| Random (Input PSD with FRF) | Input PSD: Phase and
                                    Magnitude Input PSD: Real and Imaginary | 
| Sine Sweep | Constant Load Variable Scale |