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Vitaly Pipko C.A 8335 - new model of power quality analyzer from Chauvin Arnoux
The article describes a new device from Chauvin Arnoux, which is intended for the energy and maintenance departments of industrial and administrative buildings and provides an instant picture of the main characteristics of the power grid, complemented by design parameters and numerous processing functions.
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Measuring technology
Johnnie Hancock Measuring Jitter and Plotting a FlexRay Signal Eye Diagram Using an Oscilloscope
The problem of evaluating the jitter of the edges of pulses (jitter) and synchronization errors of signals of serial communication buses using oscilloscopes is considered. To create a repeating eye diagram on an oscilloscope screen, a timing reference is required that is not explicitly found in many modern serial protocols because it is embedded in the serial data signal. This article shows you how you can get eye diagrams on an oscilloscope screen without an explicit clock signal.
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Measuring technology
Vladimir Nikonenko Problems and prospects for the development of metrology of temperature measurements
The production of technical measuring instruments for temperature should provide for the availability of means for their verification both during production and release, and in operation. With the help of measurements at the highest level, the quality and quantity of goods and services are reliably assessed, and consumer rights are protected.
The resulting "niche" in the metrological support of temperature measurements is quickly filled with equipment supplied from far abroad. However, not all advertised and certified imported products meet metrological standards.
21
Measuring technology
Ai-Lee Kuan Logic Analyzer Basics
The article discusses the principles of the logic analyzer. The basic methods of working with the logic analyzer and the peculiarities of its use as a timing analyzer and as a state analyzer are described. The article is useful as an educational one for beginners to debug digital circuits.
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Measuring technology
Jae-Yong Chang Tips for measuring low currents with an oscilloscope and current probes
The article discusses the issues of measuring low currents using an oscilloscope. This measurement is affected by oscilloscope noise. This becomes a problem when it comes to high-precision measurements. This article provides helpful guidelines for making accurate measurements of low currents.
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Measuring technology
Tom Elliott Scan, Classify, Localize: RF Signal Processing in the Field
Digital modulated radio frequency (RF) signals are increasingly used, and identification and processing tasks are beginning to prevail in the list of radio monitoring tasks. While there are developed methods for identifying and processing any unknown RF signals, digital signals pose new challenges due to regulatory changes and security and intelligence requirements that require improved and evolved processing techniques. This article explores new Tektronix digital RF signal handling techniques in the field.
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Microcontrollers
Anatoly Shamraev Architecture and programming fundamentals of DSP family C28x from Texas Instruments. TMS320F2812 processor interrupt system
The article discusses the features of the organization of the interrupt system of the TMS320F2812 processor, the methodology for configuring the PIE interrupt extension module, and methods of controlling the boot procedure.
40
Microcontrollers
Vladimir Rufitsky Real-time operating system for microcontrollers
Real-time operating system (RTOS), multitasking are terms known to most digital developers and programmers. For modern high-performance processors, powerful operating systems have been created that implement parallel execution of many tasks in real time [1]. Microcontrollers did not remain uncovered by the ideas of multitasking. A number of RTOSs have been developed for microcontrollers of various types and are distributed as a market product [2–4]. Developments of our own RTOS are also proposed [5]. The article discusses one of the possible options for the implementation of such an RTOS, which has been successfully applied in a number of practical developments.
46
Memory
Artem Kozlov FRAM: efficient and reliable memory for modern electronic measuring instruments
Electricity consumption is constantly growing all over the world. As a result, there is a growing demand for innovative solutions in energy metering and energy management. Measuring equipment should be multifunctional and low-power. Ramtron offers FRAM memory chips for use in modern measuring instruments. The products of this company are distinguished by a long service life, ease of use and low energy consumption: thanks to this, they are ideal for use in various household meters, automatic data retrieval (AMR) systems, taximeters, slot and vending machines, etc.
52
Debugging tools
Mikhail Dmitriev BeagleBoard: Texas Hound
BeagleBoard.org is a community of developers building a single board computer based on the TI OMAP3530 processor. A feature of the project is that it is open, drawings, diagrams are available, i.e. everything is implemented according to the open source ideology. At the moment, there is already the board itself and a sufficient amount of software for it, including prepared Linux distributions. The article will consider the board itself, the process of installing and running Linux on it.
56
ADC and DAC
Bob Lee Features of the selection of the specification of a high-precision analog-to-digital converter
The relationship between the resolution of the ADC and the signal coding accuracy is considered. It is noted that increasing the ADC bit depth does not necessarily improve performance in terms of resolution and accuracy. The reasons why high resolution does not guarantee high accuracy and why for very high resolution ADCs high accuracy can only be obtained as a result of some offset and gain calibration are analyzed.
60
Power electronics
Vitaly Shevchenko International Rectifier's new MOSFET family
By dynamically developing the direction of development of devices for portable electronics with the best performance and reliability on the market, International Rectifier aims to establish itself as one of the main suppliers in this sector of the electronic components market. The article will discuss the new generation of MOSFET transistors from International Rectifier that have appeared on the market.
64
Power electronics
Alexander Dovgy Flashtrab compact - comprehensive surge protection for energy systems
The article discusses the features of a new generation of devices - products of the Flashtrab compact and Valvetrab compact series, which provide reliable protection of electronics against surge voltage.
68
Power electronics
Grigory Lazarev Converters for variable frequency drive
About 65% of electricity in industry, electricity, housing and communal services and other industries is consumed by asynchronous electric drives of pumping and fan units operating at a constant speed. The use of electric drives with variable speed can improve the efficiency of electricity use, increase the profitability and competitiveness of the enterprise, and improve the environmental situation. The article discusses the features of frequency control systems for high-voltage asynchronous electric motors.
70
FPGA and BMK
Valery Zotov Practical course of end-to-end design of digital devices based on FPGAs from Xilinx. Part 17
The seventeenth part of the course introduces the parameters of reports on the execution of the procedure for analyzing temporal characteristics, which is carried out after mapping the logical description of the project to the physical resources of the FPGA and after placing and routing the designed device in the crystal, and the parameters of the complete time model of the device being developed. The implementation of the process of implementing the device under development in FPGA with FPGA architecture is considered. The necessary information on the structure and content of the reports generated at this stage is provided.
78
Power supplies
Sergey Krivandin Mean Well 1U power supplies for telecommunications equipment
Mean Well products are well known in the Russian market and are widely used in various telecommunications equipment [1, 2]. In 2007, the company released the RCP-3K1U power supply in a 1U chassis specifically for mounting in a 19 ”rack for powering telecommunications equipment. This article discusses the parameters of this product and other power supplies used in telecommunications equipment.
82
Embedded systems
Bernhard Linke Choosing the Right Single Wire Control Bus for Embedded Applications
This article examines the four categories of single-wire circuits for embedded applications and discusses their capabilities and requirements in relation to available (unused) system resources. The above schemes refer to short networks with a range not exceeding 1 m, which include a small number of actuators. Instructions and a table are provided for making a decision on the selection of a cost effective single-wire control device for the selected application. It is assumed that the reader is familiar with the basics of microcontroller design and the principles of the single-wire bus.
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Exhibitions
The XVI International Exhibition "Informatics and Communications 2008" has ended, passing the baton to the successor
From 12 to 14 November at the International Exhibition Center (Ukraine, Kiev, Brovarskoy Prospect, 15) the XVI International Exhibition "Informatics and Communication 2008" was organized by Premier Expo (Ukraine), ITE Group Plc (Great Britain).
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Exhibitions
Exhibitions
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Business card CHIP NEWS Ukraine
Business cards
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