A code verification tool verifies that code generated from a model represents all of the functionality of the model and does not contain any unintended functionality. The side tone noise suppressor is configured to receive the reverse link audio signal, suppress noise in the received reverse link audio signal, and output a noise suppressed side-tone signal. The shell has a first strap-receiving slot on one side thereof and a second strap-receiving slot on an opposite side thereof. Then means illuminate the article to be viewed with a laser beam so that light therefrom passes through the objective or reflects therefrom and through the hologram, to correct for aberrations in the objective and provide a relatively clear image of the article. An optical path of the second component of the output beam through the enclosure from the laser resonator to the detector is substantially free of ssub-200 nm photoabsorbing species so that the second beam component reaches the detector without substantial attenuation from the photoabsorbing species, while the first component is used for processing a workpiece. The intermediate signal may be amplitude modulated by controlling a current source andor voltage source supplying power to a power amplifier.