Newtons4th Ltd. (abbreviated as N4L) was established in 1997, aiming to design, manufacture, and support innovative electronic devices for the global market. Specializing in complex testing equipment for the power electronics industry, including power analyzers, frequency response analyzers (gain/phase analyzers), AC power sources, impedance analyzers, and selective level gauges.
N4L Power AnalyzerAdopted signal processing technology for fast, accurate, and repeatable measurements in demanding applications. Whether you need to measure the efficiency of a variable-speed motor drive or the losses of a transformer,N4L offers power analyzer measurement solutions. By combining years of experience in high-frequency measurement instruments with innovative advancements in analog and digital design technology, we produce the next generation of precise power analyzers. All N4L power analyzers feature real-time gapless analysis and high sampling rates for all fundamental frequencies, enabling broadband gapless measurements on any input waveform.
Frequency Response Analyzer（FRA is a high-precision measuring instrument used for analyzing components, circuits, and systems in the frequency domain (referred to as the Device Under Test or DUT). FRA typically generates a sine wave and injects it into the DUT. The signal is measured at the injection point using an input channel on the FRA (usually Channel 1). The injected signal passes through the DUT, and the same signal is simultaneously measured at the reference point by the frequency response analyzer - usually the system's output, using Channel 2. Sine waves can be used to determine the frequency-domain behavior (frequency response) of the system. The PSM series includes PSM1700, PSM1735, PSM3750, PSM2200, and PSM2201, offering features such as gain/phase analysis, LCR meters, phase voltage meters, broadband true RMS meters, power analyzers, harmonic analyzers, and more.
PSM1700 PsimetriQ is a DFT and true RMS analysis instrument, suitable for research and development and production testing applications. It is specifically designed for applications like range gain/phase analysis, including switch-mode power supply feedback loop stability analysis and general frequency response analysis of filters. It features a clear, bright graphical display that shows real-time values, graphs, or tables. It can be fully operated remotely via RS232 or LAN. When used with the IAI (Impedance Analysis Interface), PSM becomes a high-precision 1MHz impedance analyzer/LCR meter. It is designed to provide performance, measurement speed, and convenience, offering complex measurement functions in an economically efficient and user-friendly desktop instrument.
PSM1735Utilizing an innovative design that combines direct digital analysis with heterodyne technology, this product offers a wide range of measurement capabilities across a broader frequency spectrum than any other instrument currently available. Typical applications include switch-mode power supply feedback loop analysis, filter testing and design.LVDT testing, sweep response analysis of winding components, and more. Just like other N4L products, the PSM1735 NumetriQ optimizes the use of its analog hardware with DSP and FPGA technology, providing speed and measurement flexibility without compromising the performance of each measurement function. The N4L PSM1735 boasts 0.01 dB gain accuracy and 0.02° phase accuracy, which is true market performance.
PSM3750Established onBuilding on the successful foundation of the PSM2200 and PSM17xx series frequency response analyzers, combined with our experience in designing and developing isolated input channels for our power analyzers, we offer solutions for high-voltage, high-precision, and isolated gain and phase measurements. The PSM3750 features an innovative design, integrating direct digital analysis and heterodyne technology within 500Vpk isolated input/output channels, providing a wide range of measurement functions over a broader frequency spectrum than any other instrument currently available. Like other N4L products, the PSM3750 NumetriQ utilizes DSP and FPGA technology to optimize the use of its analog hardware, offering speed and measurement flexibility without compromising the performance of each measurement function.
LPA Series Power AmplifiersRobust and reliable, suitable for a variety of industrial and laboratory applications. Designed forPSM Series Frequency Response Analyzers, which can also be used anywhere that requires signal enhancement through voltage or current. They combine DC precision with a wide bandwidth, capable of accurately reproducing complex waveforms and driving loads that may be capacitive, inductive, or resistive. DC components can be eliminated through AC coupling, or reduced through AC + (DC) coupling. To limit high-frequency noise, input bandwidth can be reduced using a linear phase, second-order low-pass filter, suitable for low-frequency applications. Amplifier gain can be selected from three precision gain settings.
N4A Series Programmable AC Power SupplyProvided breakthrough low distortion performance, proprietaryThe implementation of a "6-legged output stage" effectively creates a very high switching frequency for waveform construction, resulting in lower distortion. The N4A boasts the unique capability to generate high-frequency power waveforms up to 1kHz and low-frequency power waveforms as low as 0.01Hz. This feature allows engineers to simulate low-frequency power equipment, such as wind turbines with very low fundamental frequencies. To date, the distortion level of switching topologies has been higher than that of more mature linear methods. The introduction of the N4A power supply marks a new chapter in low-distortion AC power supply technology. The N4A AC power supply series complies with a range of international EMC standards, including IEC61000-3-2, IEC61000-3-3, IEC61000-3-11, IEC61000-3-12, IEC61000-4-11, and IEC61000-4-13.
