PF-10541 is a further member of the test method series of this manufacturer and is cited in the same way as the others of the family, as the procedure that implements a requirement stated elsewhere. Two details of test methods in this field are worth stating, because they decide whether a result is accepted. The first is the measurement point: for a conducted test the level is defined at a particular reference plane and the cable routing and the bonding of that reference plane are part of the method, so a result obtained with a different arrangement is not comparable. The second is the operating condition of the equipment under test while the disturbance is applied, since a module that is idle may pass a test it would fail when its actuator is driven. Both are fixed by the method document rather than by the requirement.