Yokogawa GS200 programmable DC voltage/current source

The Yokogawa GS200 is a programmable DC voltage/current source with high accuracy, high stability and high resolution.

With its good traceability, stability and 5½-digit resolution, the device generates low-noise DC voltage and current signals for a wide range of device driving and test and measurement applications.

In addition, an optional monitoring feature turns it into a voltage and current measuring instrument.

The device will act as a voltage source up to ±32 and a current source up to ±200 mA. Typical accuracy is ±0.016% (on the 10 V range) and the high stability is indicated by a temperature coefficient of ±0.0008%/°C (also on the 10 V range).

High resolution is provided by the display with a count of ±120,000. Noise level is low at only 100 (V p-p on the 10 V range).

Other features include: output that is programmable up to 10,000 steps of output values; built-in USB mass storage device; optional ethernet interface. Channel expansion is enabled by the synchronous operation of multiple units.

It can perform four-quadrant operation by operating as a current source or a current sink in the range of ±30 V and ±200 mA. When it is sinking current, it can operate over exactly the same range as when it is operating as a current source.

The optional voltage and current monitoring feature allows functioning as a current monitor when it is generating voltage and as a voltage monitor when it is generating current. The display resolution using this option is 4½ digits. The measured values can be stored along with the source values in the internal USB mass storage device.

The instrument features a seamless bipolar output function which inverts the signal polarity without the use of a mechanical contact. As a result, no abnormal voltage or current is generated when the polarity is inverted, providing truly continuous voltage variation from the maximum negative output to the maximum positive output.

This feature is invaluable for evaluating zero-crossing comparators and for output polarity inversion during program operation.