Output Current Accuracy of an LDX-3525B

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Output Current Accuracy of an LDX-3525B

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This technical note presents the results of measurement (display) accuracy tests performed on a typical production model LDX-3525B Precision Current Source.The test setup is shown in Figure 1. The LDX-3525B was placed in low range (200 mA max.) and was set to drive a precision resistor. The LDX-3525B set current was adjusted (at 10 mA intervals up to full scale) via an internal serial connection. Actual output current was measured with a calibrated ammeter. The LDX-3525B current measurement (front-panel display) values were compared to actual current values. Raw data was fed to a computer and converted to accuracy data as a percent of full-scale current (% FS).

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