Recalculate is typically used on linear actuator motors and infrequently on HH motors. It allows all satellite positions to be globally shifted. Example: if the linear actuator is replaced or the clamp collar slips or is moved. If the previously programmed satellite positions no longer correct, the DiSEqC motor position would be selected then the motor manually driven to the new corrected (offset) aiming. The recalculate function resets all satellites by this same offset.