9 Electrical and electronic instruments and apparatuses for measuring electrical signals, namely, oscilloscopes, logic analyzers, logic analyzer mainframes, logic analyzer modules, logic protocol analyzers, spectrum analyzers, digital multimeters, RF power meters, electrical signal analyzers, electrical signal frequency counters, electrical signal sampling modules, electrical signal waveform monitors, electrical power analyzers, RF and microwave power meters; Accessories for electrical and electronic test, measuring, and monitoring instruments and apparatuses, namely, electrical signal probes, probe tips, probe adapters; Recorded oscilloscope, logic analyzer and spectrum analyzer software for ensuring standards compliance, power measurement and analysis, jitter, noise and timing analysis, vector signal analysis, serial data link analysis; Probes for scientific purposes; Electronic chips for the manufacture of integrated circuits; Integrated circuits, integrated circuit chips, and integrated circuit modules for encoding and decoding voltage and current signals; Voltage stabilizing power supply