Rohde & Schwarz NGU411 introduction, new model in the NGU series

Thanks to their extremely high accuracy and fast load recovery time, the Rohde & Schwarz NGU Source Measure Units (SMU) are perfect for challenging applications. A special ammeter design is used to precisely measure current drains from nA to A in one pass – no need to make multiple measurement sweeps. The instruments’ short recovery times enable them to handle fast load changes that occur, for example, when mobile communications devices switch from sleep mode to transmit mode. With high speed data acquisition, every detail is detected down to 2 μs resolution. The Rohde & Schwarz NGU source measure units provide two- or fourquadrant architecture, allowing them to function both as a source and a sink to simulate batteries and loads.

The two-quadrant Rohde & Schwarz NGU201 and the four- quadrant Rohde & Schwarz NGU4xx provide up to 60 W of output power and sink power, respectively. The channels are floating, galvanically isolated and protected against overload and short circuits.
With six measurement ranges (Rohde & Schwarz NGU411: five ranges) for current and a resolution of up to 6 ½ digits when measuring voltage, current and power, the Rohde & Schwarz NGU source measure units are perfect for characterizing devices that work from extremely low power consumption to high currents in the ampere range. Using ammeters with feedback- amplifier technology increases accuracy and widens the sensitivity down to the nA range.

With an acquisition rate of up to 500 000 samples per second, even extremely fast variations in voltage or current can be captured.
The instruments provide fast load recovery time of <30µs combined with minimum overshoot even during a demanding load change. The linear design of the output stages allows the Rohde & Schwarz NGU source measure units to operate as a source and sink with minimum residual ripple and noise. The two-quadrant Rohde & Schwarz NGU201 source measure unit is a member in the family of wireless communications test instruments, mainly designed to supply devices under test with extremely low sleep currents, such as Bluetooth® low energy devices.

It is ideal for powering battery-operated devices due to its adjustable output impedance and fast impedance regulation. The optional battery simu lation function provides test conditions that imitate the use of a real battery. An optional voltmeter input makes an additional digital multimeter unnecessary in many applications.

The four-quadrant Rohde & Schwarz NGU401 / NGU411 source measure units are the semiconductor testing specialists for general-purpose applications that span many different industries and many different devices under test. They can act as bipolar power supply or bipolar electronic load. The units come with a modulation input to connect an arbitrary generator, for instance, enabling the instrument to act also as an AC source.