A plastic container is provided having an elongated neck, a shoulder region, a body portion and a base. The allogenic or xenogenic materials comprise natural disc annulus material, which may have a portion of the anterior longitudinal ligament attached. The TTL-to-LVDS converter board is coupled to the graphics controller using a cable and is preferably located proximate the graphics controller to minimize cable length. The resilient member is compressed by the mounting member. The trailing edge of the subsequent pulse of the waveform is advanced if the second digital duty cycle value is less than the first digital duty cycle value.