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We have investigated the performance of a method called the Reference Step Method at low voltage levels. The method has been evaluated earlier at voltage levels from 0.1 V to 1 kV with excellent results. The advantages of this method are that it uses commonly available equipment and can be fully automated. We have made comparisons with three other low-voltage methods and the differences show that...
This paper summarizes a comparison between two methods of building the voltage scale. The first one is the Reference Step Method developed at the Measurement Standards Laboratory of New Zealand. The second one is based on a binary potentiometer represented by the MI 8000/8001 instrument. Both methods were used to calibrate voltage ratios of a Fluke 5720A calibrator. Preliminary results showed good...
We report on the performance of a simple method, known as the Reference Step Method, to build up the dc voltage scale of a source. The key advantages of this method are that it relies on equipment that is readily available in most high-level laboratories and can be fully automated. The Type A uncertainties achieved by this approach can be less than 0.1 µV/V. This performance is achieved because of...
The paper presents preliminary results of the APMP.EM-K6a key comparison of ac-dc transfer conducted during 2000-2003. The ac-dc voltage transfer difference of the travelling standard was measured at 3 V and selected frequencies from 1 kHz to 1 MHz that included those of the CCEM-K6a key comparison. Also discussed are the methods used to compare TVCs with different input connectors, and to link the...
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