An oscilloscope is an electronic instrument used to display and observe signal waveforms and related parameters, which can observe and directly measure the shape, amplitude and period of signal waveforms, whose shape is shown in the figure. All electrical parameters or physical quantities that can be converted into electrical signals can be converted into equivalent signal waveforms for observation, such as current, electrical power, impedance, temperature, displacement, pressure, magnetic field, etc.

The red meter pen is grounded, the red circle of the feet are locations, the negative terminal of the capacitor are locations. The black pen is placed on the IC foot to be measured, then the multimeter will display a dipole value, according to the dipole value to determine the IC good or bad. In the end, the value of how much is good, this is to evaluate the experience, either you have a piece of the motherboard, do a comparison of the measurement on the line.

Oscilloscope "trigger" is to make the oscilloscope scan and the observed signal synchronization, so as to display a stable waveform. To meet different observation needs, different "trigger modes" are required. The basic trigger mode of the oscilloscope has three kinds: automatic mode (AUTO), normal mode/regular mode, single mode

Tektronix oscilloscope in the use of the first to get a stable trigger waveform, so as to ensure the reliability of the subsequent measurement, decoding and other advanced functions. Now the trigger function of the digital oscilloscope is becoming more and more powerful, from the conventional trigger, to the protocol trigger, and then to the template trigger, more and more powerful. Therefore, "trigger" is definitely called the concept of the digital oscilloscope soul level, if there is no suitable trigger conditions, waveform observation can not begin to talk.

MobileTech has recently launched RG650E series and RG650V series, the next generation of 3GPP Release 17 compliant 5G NR modules. Compared with the previous generation of 5G products, the 5G R17 modules are better in terms of data rate, network capacity, power consumption, latency and ultra-reliability, and can easily meet the higher requirements for wireless communication capabilities in fast-growing vertical markets such as 5G fixed wireless access (FWA), enhanced mobile broadband (eMBB) and industrial automation.

Variable optical attenuator is an important optical passive device in fiber optic communication, which enables real-time control of the signal by attenuating the transmitted optical power. Simply put, in optical modules, the use of optical attenuators can reduce the bit error rate (BER). In order to achieve BER, optical power needs to be reduced, which requires the use of optical attenuators.

Digital oscilloscope is a general-purpose test instrument, essentially a graphic display device, equivalent to a voltmeter or multimeter with a graphic display, can visually display the signal waveform on the screen over time, and the waveform period, voltage, frequency and other parameters for measurement and analysis, widely used in scientific research, production and other fields, is the engineer design, debugging, maintenance of products when the main test instrument, plays a pivotal role in the test work.

A spectrometer is a scientific instrument that decomposes light of complex composition into spectral lines, consisting of prisms or diffraction gratings, etc. Using a spectrometer, light reflected from the surface of an object can be measured. The seven colors of light in sunlight are the parts that can be divided by the naked eye (visible light), but if the sunlight is broken down by a spectrometer and arranged by wavelength, visible light only accounts for a very small range of the spectrum, and the rest are spectra that cannot be distinguished by the naked eye, such as infrared, microwave, ultraviolet, X-rays, etc.

To meet the rapidly expanding data traffic in today's world of smartphones and mobile devices, data centre network interfaces are moving to the faster 200 GbE, 400 GbE and 800 GbE standards. In this context, communication equipment interconnections have begun to adopt not only PCI Express Gen5, which supports faster speeds of up to 32 Gbit/s, but also multichannel technology.