Electro-acoustic components of different frequencies have different impedance values, needs to be the nominal impedance of the component under test frequency impedance of the measured frequency. 152A Built-in 20Hz ~ 8kHz signal generator and two large LCD display impedance meter and frequency meter, respectively, show the test frequency and the measured value of the impedance, and can set upper and lower limits, speed automatically determine pass / fail, used in the production line of 100% quality inspection. 152A applies not only to the speaker factory, earphone factory, receiver factory, also apply to the feed testing audio plant, monitors factory, multimedia works of electro-acoustic components. Features: Jieke DC resistance and AC impedance measurements. ※ Built-in signal generator 20Hz ~ 8kHz, continuously adjustable, can also be connected to an external signal generator. ※ You can set the lower limit, the high-speed measurement pass / fail. ※ large LCD impedance meter and frequency meter, but also when independent frequency counter. Details: Power: * (KW) Frequency: 8K (HZ) Dimensions: 360 (L) × 130 (H) × 280 (D) (mm) measuring range: 20Hz ~ 8 kHz type: Digital Measurement Instrument Weight: 4.5 (kg) Model: 152A Accuracy: ≦ ± (0.2% + 0.1 Ω) Brand: Sunshine Power: 220V DC resistance and AC impedance of the speaker Jieke measured. Built-in signal generator 20 Hz ~ 8 kHz, continuously adjustable, can also connect an external signal generator. Can be set on the lower limit, the high-speed measurement pass / fail. Large LCD impedance meter and frequency meter, but also when independent frequency counter.