Newtons4th Ltd. (abbreviated to N4L) was established in 1997, dedicated to designing, manufacturing, and supporting innovative electronic devices for the global market. Specializing in complex test 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 AnalyzerUtilizing cutting-edge signal processing technology. Offers rapid, 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. 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 base frequencies, enabling broadband gapless measurements on any input waveform.
Frequency Response Analyzer（FRA (Frequency Response Analyzer) is a high-precision measuring instrument used to analyze 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 component, circuit, or system. The signal is measured at the injection point using an input channel on the FRA (usually Channel 1). The injected signal passes through the device under test, 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, featuring 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 R&D and production testing applications. Specifically designed for applications such as range gain/phase analysis, including stability analysis of switch-mode power supply feedback loops 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 easy-to-use desktop instrument.
PSM1735The innovative design, incorporating a fusion of direct digital analysis and heterodyne technology, offers a broad range of measurement capabilities over a wider frequency spectrum than any other current instrument. Typical applications of this product include switching mode power supply feedback loop analysis, filter testing and design.LVDT testing, sweep response analysis of winding components, and more. Like other N4L products, the PSM1735 NumetriQ optimizes the use of its analog hardware with new DSP and FPGA technology, providing speed and measurement flexibility without compromising the performance of each measurement function. The N4L PSM1735 boasts 0.01dB gain accuracy and 0.02° phase accuracy, which is true market performance.
PSM3750EstablishedBuilding 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 employs innovative design, integrating direct digital analysis and heterodyne technology within 500Vpk isolated input/output channels, providing a wide range of measurement capabilities over a broader frequency spectrum than any other instrument currently available. Like other N4L products, the PSM3750 NumetriQ optimizes the use of its analog hardware with new DSP and FPGA technologies, offering speed and measurement flexibility without compromising the performance of each measurement function.
LPA series power amplifiersRobust and reliable, suitable for various industrial and laboratory applications. Designed forPSM series frequency response analyzers, which can also be used anywhere a signal boost in voltage or current is required. They combine DC accuracy with a wide bandwidth, capable of accurately reproducing complex waveforms and driving loads that may be capacitive, inductive, or resistive. The DC component can be eliminated by AC coupling, or reduced by AC + (DC) coupling. To limit high-frequency noise, the input bandwidth can be reduced using a linear phase, second-order low-pass filter, suitable for low-frequency applications. The amplifier gain can be selected from three precision gain settings.
N4A series programmable AC power supplyDelivers breakthrough low distortion performance, proprietary"A 6-legged output stage implementation effectively creates very high switching frequencies 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 levels of switching topologies have been higher than those 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."
