Title :
A simple DMM-based measuring system for QHE resistance measurements
Author :
Svoboda, P. ; Chrobok, P. ; Vasek, P.
Author_Institution :
Inst. of Phys., Czechoslovak Acad. of Sci., Prague, Czech Republic
Abstract :
We have developed a simple, computer controlled DC measuring system for calibration of wire-wound 10 k/spl Omega/ resistors against a QHE structure. The system employs a high-accuracy DMM in both voltage and four-terminal resistance measurement modes. In both cases, resolution down to 10/sup -8/ and combined standard uncertainty at the level of 10/sup -7/ could be achieved. The system proved to be also useful for testing new QHE samples fabricated for quantum resistance metrology.
Keywords :
calibration; computerised instrumentation; digital multimeters; electric resistance measurement; measurement standards; measurement systems; measurement uncertainty; quantum Hall effect; resistors; 10 kohm; DMM-based measuring system; QHE resistance measurements; calibration; combined standard uncertainty; computer controlled DC measuring system; four-terminal resistance measurement mode; high-accuracy DMM; quantum resistance metrology; voltage measurement mode; wire-wound resistors; Battery charge measurement; Calibration; Circuits; Current supplies; Electrical resistance measurement; Metrology; Resistors; Switches; System testing; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851134
