Test, measurement and signaling equipment, namely oscillators; signal generators and analyzers, logic-signal sources, pulse and data generators, function and arbitrary waveform generators; sweepers; spectrum analyzers, logic analyzers, waveform analyzers and oscilloscopes; network/spectrum analyzers; modulation-domain and time-interval analyzers; hand held testing meters; multimeters; power, voltage, current, impedance, inductance, capacitance, and resistance meters; electronic frequency counters, wire and cable testers; communication and wireless communication equipment testers; telephone, cellular telephone, television, cable television and broadband testers; light wave testers; computer and communications networks testers; software for monitoring telephone and network traffic; bar code readers; power supplies; interferometers, vibration transducers; software for data acquisition and control; remote monitoring probes; high-frequency computer-aided engineering software; cell-site radio-frequency testers, electronic design automation simulation software, laser based positioning systems comprised of integrated circuits, hardware and software for analyzing, displaying and storing data; microprocessor development systems comprised of hardware, firmware and operating systems for use in designing microcontroller-based electronics; direct current electronic loads; lasers not for medical use