Disclosed herein are devices, systems and methods of use relating to articulating interbody cages. , are transmitted and received based on a wireless method, so that the use of wires can be significantly decreased. The customization information in the configuration mechanism is then retrieved by the computer system to customize the computer system. Using the recovered reticle near field for the calibration reticle, a lithography model for simulating wafer images is generated based on the reticle near field. A rear side of the bucket includes a lower ear for receiving a lower pin. The multi-carrier waveform generator has a nulling waveform generator coupled to a plurality of single carrier waveform modules for generating a digital nulling waveform based on the retrieved data.