Rohde and Schwarz NGU411 – Four Quadrant Source Measure Unit (-20V to +20V; 20W)

• Four quadrant source measure unit
• Catalog number 3639.3763.04
• Output voltage: -20V to +20V
• Maximum output/sink power: 20W
• Maximum output / sink current: ≤ 10V: 2A; > 10V:1A

Thanks to their extremely high accuracy and fast load recovery time, 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 2μs resolution. The R&S NGU source measure units provide two- or four-quadrant architecture, allowing them to function both as a source and a sink to simulate batteries and loads.

With its four-quadrant architecture, the R&S NGU401/NGU411 can supply positive or negative voltages or currents and can act as a source or sink in both polarities. This enables tasks such as measuring the forward and reverse characteristics of semiconductor devices in a single test operation without having to make changes to the circuit.

The power supplies automatically switch from source mode to sink mode. When the applied external voltage exceeds the set output voltage, current flows into the device. This is indicated by the opposite sign for the current measurement.

The R&S NGU401/NGU411 source measure unit provides a modulation input to connect an arbitrary generator, for instance. The output follows the modulation input signal, enabling the instrument to act as an AC source or be used to simulate glitches or unstable conditions.