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The Fluke 734A DC Reference Standard is a direct voltage reference used to maintain the volt in primary and secondary standards laboratories. It consists of four electrically and mechanically independent 732B DC Standards and a rackwidth enclosure. Individual 732Bs provide 10 V and 1.018 V outputs and may be transported easily to remote locations while the reference is maintained in the laboratory. Stability for each output is ±2 ppm per year (10 V) and ±0.8 ppm per month (1.018 V). Each 10 V output can drive up to 12 mA of current to simplify use with instrumentation with low input impedance.