A Delta Phase Modulator is a VX module component which modulates the frequency-domain n-space profiles of delta signals. The Delta Phase Modulator is an essential component of any modern VX system, and has been part of the core module since the introduction of the VX5. Delta Phase Modulators, or DPMs, as they are often abbreviated, have recently found new use in enabling rapidly accelerated trans-finite element modeling, but their primary purpose remains the synchronization of delta modulation between two or more VX modules, allowing VXers to communicate and cooperate on particularly difficult problems.