HXS is a Hard X-ray Spectrometer for use in recording the hot-electron Bremsstrahlung energy distribution in the x-ray energy range 12 to 60 keV region. HXS is composed of a cylindrically bent crystal, slit, scatter shielding, and a detector plane that is compatible with a CCD camera or a streak camera. Tiger Innovations was under contract for the Naval Research Laboratory to provide custom control electronics for this instrument. The HXS electronic system consisted of three basic parts: Diagnostic Control Processor (DCP), Diagnostic Interface Unit (DIU), and the diagnostic itself. Tiger Innovations designed, integrated and tested the HXS electronics and provided support to the experimenters. HXS was a precursor to the HENEX project.