Rohde & Schwarz launches two new source measure units (SMU) and enters a market previously not addressed by the power products of the test and measurement specialist. Simultaneous sourcing and measuring of currents and voltages with high precision are enabled by the performance of the new R&S NGU201 and R&S NGU401 SMUs. The R&S NGU201 two-quadrant switches automatically from source mode to sink mode at a defined positive input voltage and the four-quadrant R&S NGU401 can switch at negative voltages, supporting source measurements for a wide range of power supply types.
The current feedback amplifier technology of the instrument provides both high sensitivity and accuracy to reliably measure currents from nA to A in a single sweep. To address the need for fast-changing load conditions typical of battery-powered communications devices switching between sleep and transmit modes, the R&S NGU provides a time of under 30 μs with minimum overshoot with an optimized control loop load.
The R&S NGU SMUs consist of six current ranges from 10 µA with 100 pA resolution, to 10 A with 10 µA resolution, with an accuracy of up to 0.025 %. The voltage is calculated with 10 µV resolution in the 20 V range and 1 µV resolution in the 6 V range. The typical measurement problem of capacitance at the input to the device under test is addressed by the R&S NGU, with a variable capacitance mode adjustable in steps from 1 µF to 470 µF recompensing the capacitance so that the current is displayed as if it was measured directly at the device under test. 20 V, 8 A, and 60 W devices are all supported.
R&S NGU401 four-quadrant is specialized for semiconductor testing. Source measurements for any equipment requiring source and sink voltages in the range from – 20 V to +20 V – are provided by the instrument. A fast current regulation mode is included in the R&S NGU to avoid damaging current-sensitive devices under tests, such as LEDs or other semiconductors. The R&S NGU401 is turned into an AC source with an external waveform source connector, which makes it possible to simulate glitches or unstable power supplies of up to 1 kHz.
The two-quadrant R&S NGU201 can analyze the battery drain of any battery-powered device, including mobile phones, tablets, and the full range of IoT equipment. It can be used by device engineers to simulate real-world battery characteristics. The characteristics of the battery model, once are defined, can be reused whenever required. The instrument even supports fast-charge applications with its 8A maximum current.
The R&S NGU series includes the elaborate features common to all exclusive power supplies from Rohde & Schwarz. Even the shortest intermittent glitches are detected due to the data acquisition rate of 500 samples per second offered by the FastLog functionality captures voltage and current levels every 2 μs. Users can inspect the voltages at any point in the device under test as well as the input voltage with the optional built-in digital voltmeter.
The new R&S NGU201 and R&S NGU401 source measure units are part of the R&S Essentials portfolio and are now available from Rohde & Schwarz and selected distribution partners. A limited number of fully equipped special model R&S NGU401COM is on offer at an attractive price. For more information on the R&S NGU source measure units.
For more details, visit https://www.rohde-schwarz.com/product/ngu.html
