Feature: T&M
The peak instantaneous current is often measured to ensure that the charging current of the power supply’s input capacitor does not exceed its maximum current rating or that of any other component in the power supply
interactive test sequences for system developers or as fully- automatic EMC test software for device certification. The Elektra test software controls complete EMC systems
and automates measurements of systems for both emissions and immunity. In fact, this software simplifies configuration of test systems and test descriptions in accordance with common standards. It speeds up test execution and paves the way to quickly generating a comprehensive test report. Modern, reliable and highly-efficient automatic and interactive measuring procedures create accurate results and allow in-depth analysis of EMI and EMC measurements during development and certification. The FPC1000 base instrument has a frequency range of
5kHz to 1GHz, and can either be on a bench-top or rack- mounted; see Figure 5, left. Also, designed as a portable instrument with optional battery operation (Figure 5, middle), the FPC1000 can travel in a transport bag in the field; see Figure 5, right. Indeed, the fully-portable FPC1000 comes with a UWB patch antenna. The FPL1000 fixed and portable spectrum analysers
provide measurement functions that make them ideal for different tasks, such as EMC pre-compliance measurements, analysing analogue and digital signals, and scalar network analysis. When developing communications modules, for example for the IoT sector, tracking down very small and rare or sporadic interfering signals is often a challenge. This instrument features the largest and most detailed
display in its class at 10.1” WXGA (1366 × 768 pixel) resolution. Its display is 26% larger than other similar instruments and has a 160% higher resolution than other instruments. Virtual control enables remote control and measurement,
so this instrument supports both wired Ethernet and wireless Wi-Fi connectivity. The InstrumentView software for Windows as well as the iOS/Android app-based MobileView platforms enable remote control and measurement from anywhere at any time.
46 December/January 2021
www.electronicsworld.co.uk
Power supply testing For tests of built-in power sources, it is important that the power supply of different types of instruments are delivered at the right time and in the right order. There are many producers of these instruments, but the visual persistence oscilloscopes (VPO) manufactured by GV Instek from Taiwan are ideal solutions for measuring power sequencing, allowing simultaneous analysis of up to 20 voltages. Figure 6, left, shows Instek’s GDS-3000 series digital storage
oscilloscope as a platform with four-input channels, 500MHz bandwidth, 5GSa/s sampling rate and VPO waveform display. Its split-screen feature enables multi-window and multi- signal tests so important in the research and manufacturing fields. There is optional power analysis and serial bus analysis software making of testing even easier. The GDS-3000’s instrument’s features include 500/350/250/150MHz with 2/4-channels 5GSa/s RT or 100GSa/s ET sampling rate, independent memory for each channel, 8-inch 800x600 display, split-screen function, three built-in input impedances (50Ω/75Ω/1MΩ), power analysis software (optional), serial bus analysis software for I2
and an optional UART. The differential probe, such as GDP-025, -050 and -100,
and current probes, GCP-020, -100, -530 and -1030, are supplied with the instrument. The peak instantaneous current can be measured to ensure that the charging current of the power supply’s input capacitor does not exceed its maximum current rating or that of any other component in the power supply. In fact, its software is able to measure the first peak inrush current, to allow easy selection of fuse specifications, eliminating time-consuming manual calculations. In addition to measuring first peak inrush current, this instrument is also able to measure second peak inrush current to easily observe the changes to instantaneous power.
Power integrity measurements The versatile T5000 Series bench-top vector network analyser by Transcom Instruments is shown in Figure 6, right. This instrument offers high RF performance, wide frequency range and many versatile functions. The T5000 Series is an economical solution for R&D engineers evaluating RF components and circuits, and is ideal for power integrity measurements at frequencies to 8GHz. Its main features are as follows: frequency range from
300kHz to 3GHz/8GHz for models T5230A/T5280A and 500kHz to 4.5GHz/6.5GHz for models T5240A/T5260A. Dynamic range is typically 117dB (IFBW = 10Hz), 121dB, and noise level is < -120dB (IFBW = 10Hz). Low trace noise is 1mdB rms (IFBW = 3kHz); high measurement speed is 120μs/point; high effective directivity is > 45dB and remote control is via LAN. It offers multiple analysis options of a communication interface for multi-types testing instruments, a simplified testing manipulation and up to four ports where needed.
C and SPI,
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