Compact size with complete functions, simple operation, and easy portability. Flexible power options: can be powered by a power adapter or a 3.7V lithium battery for lab or field use. Designed to be used together with an oscilloscope for enhanced testing and debugging. Supports electronic circuit test and debugging, as well as frequency characteristics and impulse response testing. Enables measurement of audio amplifiers, helping to verify performance and behavior. Professional, reliable tool suited for both quick checks and detailed measurements in electronic work. Key benefits Reduces setup time with intuitive operation while offering a full range of functions. Lets you perform essential tests in one compact device, saving space and weight. Provides versatile power options to suit fixed benches or onsite field work. Improves troubleshooting accuracy by pairing with an oscilloscope for precise measurements. What it does A compact, multifunction testing companion that works with an oscilloscope to test circuits, analyze frequency response, evaluate impulse response, and measure audio amplifier performance. Attributes and performance Function: electronic circuit test and debugging, frequency characteristics testing, impulse response testing, audio amplifier measurement. Compatibility: intended for use with an oscilloscope to expand testing capabilities. Size: compact and portable for convenient carrying and onsite use. Power: supports power adapter or 3.7V lithium battery for flexible power options. Use scenarios Onsite electronics : quickly test and debug circuits with an oscilloscope to identify issues and verify fixes. Audio amplifier development or testing: measure frequency characteristics and impulse response to assess performance. Lab or field troubleshooting: portable testing setup that enables reliable measurements when access to mains power is limited.