Component feature of electronic testing, signaling, diagnostic and measurement systems and equipment, namely, an electrical power and radio frequency (RF) switching functionality using digital baseband power level changes and frequency offsets while maintaining amplitude and phase calibrated accuracy throughout the entire system; component feature of electronic testing, signaling, diagnostic and measurement systems and equipment used in signal generators, signal analysers, arbitrary waveform generators, pulse generators, one-box testers, namely, mobile cellular and wireless local area network (WLAN) testers, component testers, namely, network analysers