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

With its excellent traceability, stability and 5.5-digit resolution, the GS200 generates extremely low-noise DC voltage and current signals for a wide range of devices that drive and test measurement applications.

An optional monitoring feature can turn the GS200 into a voltage- and current-measuring instrument.

The GS200 acts as a voltage source up to 32V and a current source up to 200mA.

Typical accuracy is 0.016 per cent (on the 10V range) and the high stability is indicated by a temperature coefficient of 0.0008 per cent /degC (also on the 10V range).

High resolution is provided by a 5.5-digit display with a display count of 120,000.

Noise level is low: only 100uV p-p on the 10V range.

Other key features include an output that is programmable up to 10,000 steps of output values, a built-in USB mass-storage device and an optional Ethernet interface.

Channel expansion is enabled by the synchronous operation of multiple units.

The GS200 can perform four-quadrant operation by operating as a current source or a current sink in the range of 30V and 200mA.

When the GS200 is sinking current, it can operate over exactly the same range as when it is operating as a current source.

The GS200 can thus be used not just as a highly accurate voltage source but also as a highly accurate constant-current electronic load.

The optional voltage and current-monitoring feature allows the GS200 to function 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 4.5 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 that 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 the evaluation of zero-crossing comparators and for output polarity inversion during program operation.

Moreover, voltage or current glitches do not occur when the setting is changed within the same range.

Applications include usage as a DC voltage/current reference or pulse voltage/current source, measurements of the basic electrical characteristics of semiconductor devices, pulse current driving for LEDs and organic EL displays, charge/discharge characteristics tests on batteries, ‘pass/fail’ component testing, and the evaluation of zero crossing comparators.

Yokogawa – Test and Measurement

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