A SETUP FOR LINEARITY MEASUREMENT OF AC VOLTMETERS IN THE AUDIO FREQUENCY RANGE |
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| Luca Callegaro, Vincenzo D’Elia, Fabrizio Manta |
- Abstract:
- A setup for the measurement of linearity of precision ac voltmeters in the audio frequency range is described. The setup is based on an inductive voltage divider (IVD) as linearity standard. Since the IVD is calibrated under no-load conditions, the setup is provided with a compensation of the loading current absorbed by the voltmeter. The compensation is automated and based on a commercial lock-in amplifier. As examples, measurements of the linearity of two top-class ac voltmeter (a J. Fluke 5790A and a Datron Wavetek 4920) are reported.
- Download:
- IMEKO-TC4-2008-052.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Title:
- XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
- Place:
- Florence, ITALY
- Time:
- 22 September 2008 - 24 September 2008