1. an oscilloscope An oscilloscope is an electronic instrument that measures voltage waveforms. It can graphically display the law of the measured voltage signal changing with time. Using an oscilloscope can not only visually and visually observe the change of the measured physical quantity, but also use it to display the waveform, measure voltage and current, compare frequency and phase, and draw characteristic curves. 2Signal generator {TodayHot} Signal generators (including function generators) provide signal sources for maintenance and debugging of electronic equipment and instruments. It is an oscillator that can produce a certain waveform, frequency and amplitude. For example: generating sine wave, square wave, triangle wave, ramp wave and rectangular pulse wave. 3. Transistor characteristic chart Transistor characteristic graph instrument is a special oscilloscope, which can directly observe various transistor characteristic curves and curvature clusters. For example: the input, output characteristics and feedback characteristics of the transistor common-emitter, common-base and common-collection three kinds of connections; the forward and reverse characteristics of the diode; the voltage regulation or Zener characteristics of the voltage regulator; it can measure the crystal {HotTag } Tube breakdown voltage, saturation current, self or a parameter etc. 4. Infrared tester Infrared tester is a non-contact temperature measuring instrument. It includes an optical system and an electronic circuit. It modulates and linearizes information to achieve the purpose of indication, display and control. At present, the infrared thermometers that have been applied include photon temperature and thermal thermometers, which are mainly used for temperature measurement such as electric furnaces, crops, railway rails, deep underground ultra-high voltage cable joints, fire protection, gas analysis, laser reception, etc. Control occasions. 5. Integrated circuit tester This type of instrument can test TI1, PM0S, CM0S digital integrated circuit functions and parameters, and can also determine the chip type of the erased word and the online functional test and online status test of the integrated circuit. 6. LCR parameter tester Inductance, capacitance and resistance parameter measuring instruments can not only automatically judge the properties of components, but also display symbol graphics and display their values. It can also measure Q, D, Z, Lp, Ls, Cp, Cs, Kp, Ks and other parameters, and displays the equivalent circuit graph. 7. Spectrum Analyzer Spectrum analyzers are widely used in frequency domain signal analysis, testing, research and maintenance. It can measure the amplitude and frequency of signals at the same time, test and compare the composition of multiple signals and analyze signals. It can also test the signal of mobile phone logic and RF circuit. For example: the control signal of the logic circuit, the baseband signal, the local oscillator signal of the radio frequency circuit, the intermediate frequency signal, the transmission signal and so on. In addition to the above commonly used electronic measuring instruments, there are time measuring instruments, electric bridges, phase meters, dynamic analyzers, optical measuring instruments, strain gauges, flow meters, etc. fractional laser dermatology,Co2 Fractional Laser,Laser Co2 Laser Fractional,Vaginal Tightening Machine Xi'an Double H Health Technology Co., Ltd , https://www.dhextract.com