... 4.full digital 1. Multi-process: MMA, TIG, PULSE TIG, MIG, PULSE MIG, DOUBLE PULSE MIG.2.The dual-core control: DSP+ARM ... interface operation. During the welding process DSP is 100% utilization rate to ensure a better welding performance. Meanwhile ARM can provide ... . 4.Full digital control: The DSP directly output a regulated pulse width, with the software control it can realized constant current ...