Oscilloscopes; Digital multimeters; LCR meters, namely, inductance, capacitance and resistance meters; Function generators for use in the field of signal generation, namely, generators used to generate functional signals; Electrical power supplies; Test and measuring instruments, namely, analog oscilloscopes and digital oscilloscopes, spectrum analyzers, AM/FM and audio signal generators, synthesized and function generators, digital multimeters, programmable and regulated direct current power...