An engineer's hand adjusts the vertical scale on a digital oscilloscope, analyzing a complex yellow electrical signal. Concept of scientific research, diagnostics, and engineering.

technology, voltage, instrument, device, display, screen, electronics, data, pulse, measurement, test, knob, frequency, grid, laboratory, science, engineer, analysis, signal, technician, hertz, adjust, amplitude, diagnostics, Waveform, oscilloscope, unrecognizable person, selective focus, quality control, test equipment, electrical engineering, Research and Development, radio frequency, scientific research, scientific instrument, data visualization, audio signal, electrical signal, engineering work, lab equipment, voltage measurement, data analysis, circuit design, signal processing, technology industry, electronics lab, digital oscilloscope, technical diagnostics, electronic measurement, waveform analysis,