Digital frequency standard inspection and detection system includes: frequency standard comparator, frequency standard comparison measurement system, rubidium atomic frequency standard, low phase noise time frequency standard, GPS Beidou tame crystal oscillator, program-controlled radio frequency switch, instantaneous ...
As a quantitative processing testing tool, multimeters have improved a lot of testing capabilities. Their testing range and functions are gradually strengthened, especially in handheld tool instruments, which have exceeded the traditional measuring range (testing range). ...
In order to improve spectrum utilization, Dr. Mitola of the Royal Swedish Academy proposed cognitive radio technology, which can automatically detect the surrounding spectrum environment and effectively utilize idle frequency bands. in cognitive radio ...
Scan testing is a standard method for testing integrated circuits. The vast majority of integrated circuit production testing is based on ATPG (Automatic Test Pattern Generation) using scan logic. Scanning ATPG is a mature ...
The echo signal received by any radar receiver contains target echo and background clutter. To detect targets in environments containing background clutter, radar systems must have long range and wide range resolution capabilities ...
In smart grid research projects, real-time deployment of power supplies from various sources to meet the current energy consumption needs of microgrids is one of the key research topics. As an important means of research, it is ...
The implementation of broadband impedance controlled systems poses daunting challenges to designers, manufacturers and quality assurance managers of the central electronic building block - the printed circuit board (PCB). This challenge does not stem from ...
Manufacturing engineers are facing increasing complexity with the latest 802 11ac standard, which in turn is driving them to innovate test strategies to meet these emerging requirements. ...
Most simple circuits for measuring reactive components cover a limited range of component values. Although the circuit introduced in this article is only composed of some cheap components, it can measure capacitance values and electrical ...
For multi-point temperature measurement in various application environments, a multi-channel temperature measurement system based on LabVIEW is designed. The system is based on the LabVIEW graphical development environment and uses RTD as the temperature sensor. ...
Household appliances have become an essential part of our daily lives, and when we choose them we first consider their energy consumption and safety. In order to obtain more in the fiercely competitive market, electrical appliance manufacturers ...
High and low temperature impact testing is a testing method that tests materials to withstand extreme temperature changes. High and low temperature shock testing is commonly used to test industrial products such as electronic components, automotive parts, and aerospace components. ...
Post-production printed circuit boards (PCBs) of moderate complexity are traditionally inspected using in-circuit testing (ICT) and functional testing. Other testing methods, such as expensive optical and X-ray inspections, are often ...
1. Overview Switching systems are a key part of any test system. They allow customers to connect test instruments and devices under test in different ways, thereby ensuring the safety of the devices under test during the test. ...
1 Introduction The measurement of voltage and current in industrial applications is the most basic but also the most important. Industrial pressure, temperature, humidity, etc. Many measurements are made by using sensors to convert physical signals into ...
The quality of a measuring instrument is often assessed with a simple question: How accurate is the measurement? Choosing the most suitable measuring instrument requires understanding some of the factors that affect measurement uncertainty. This is the other way around ...
The English name of flowmeter is flowmeter, which is defined by the National Committee for the Approval of Scientific and Technical Terms as: an instrument that indicates the measured flow rate (or) the total amount of fluid within a selected time interval. To put it simply, it is ...
Optimizing battery life requires keeping the standby current loss of the product as low as possible. The lower the better. This requires design engineers to use low-power devices and employ efficient techniques to ...
Measuring the frequency characteristics of circuit systems, such as amplifiers (including amplitude-frequency characteristics and phase-frequency characteristics), is an important part of circuit measurement. The measurement method of the frequency characteristics of the circuit can be in the following forms: sweep ...
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