The present invention relates to a process of separating chiral isomers of chroman compounds, particularly tocopherols and tocotrienols as well as the esters and intermediates thereof. The shorting loop at least partially surrounds the antenna. In response to detecting a short circuit condition based on voltages at one or more input terminals of the integrated circuit, or based on current between the terminals, the isolation component is activated to facilitate current flow through the isolation component, such as to reduce total power dissipation in the isolation component during at least part of the short circuit condition. A delayed difference frequency signal substantially equal to a difference between the first frequency and the second frequency is monitored for. The present invention also relates to a loading fixture for installing a front end module assembly onto a motor vehicle.