obtained by the mobile test device 2 and the second test data 23 obtained by the stationary test device 1 can therefore be used in the validation process with the second gadt 20 in connection with missile systems or sub systems the term u201c validation and verification u201d is used in the following context a verified real system sub system is a system in which it has been demonstrated that the system behaves in an error free manner with regard to its prescribed specification is the system correctly constructed a verified synthetic model of a reference system model is a model which behaves in an error free manner and in the same manner on a signal plane relative to the reference system model is the model correctly constructed does it behave like the reference system model whether the reference system is validated is not important a validated real system sub system is a system in which it has been demonstrated that in its actual operational environment the system corresponds to the prescribed requirements is the system functioning correctly a validated synthetic model is a model which on the signal plane behaves in a sufficiently similar manner to the validated real system in this case the verification of the synthetic model is a basic prerequisite the integrated 6dof testbench 16 consists essentially of two parts the mobile 6dof testbench 2 and the stationary 6dof testbench 1 with the mobile 6dof.