DC Voltage Calibrator 0-1100V output, 0-25mA The Fluke 343A is a DC Voltage Calibrator and is a 7-digit instrument with a basic accuracy of 20 ppm and a resolution of 1 µV on the 10 µV range. Features a four-terminal floating output and adjustable current limit with indicator. 3 ranges: 10 V, 100 V, 1000 V Voltage range: 1 µV to 1111,111 V Output current: 0 to 25 mA Accuracy: +/- 0.003% of setting or +/- 0.0003% of range (worst case) Ripple and noise: 50 µV rms