A novel optical member is disclosed. In addition, the invention provides expression vectors, host cells and methods for their production. The optimized nonlinear behavioral model can then be applied to evaluate figures of merit for multiple devices under test in a manufacturing line. A holder is adapted to mount the arbor and an adjustment member adapted to operatively engage the anchor portion of the blade. The method further includes adjusting a previous transmit clock signal phase of the transmitting channel to a current transmit clock signal phase of the transmitting channel based on the phase difference and direction.