Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Quantum Hall Resistance Traceability for the NIST-4 Watt Balance



Dean G. Jarrett, Randolph E. Elmquist, Marlin E. Kraft, George R. Jones, Shamith Payagala, Frank Seifert, Stephan Schlamminger, Darine El Haddad


Scaling from the quantum Hall resistance to 100 Ω standard resistors used by the NIST-4 Watt Balance involves multiple resistance standards and bridges to provide the lowest possible uncertainty. Described here is the infrastructure and procedures developed to support these measurements at better than 20 x 10^-9 standard uncertainty levels.
Conference Dates
July 10-15, 2016
Conference Location
Ottawa, -1
Conference Title
Conference on Precision Electromagnetic Measurements (CPEM) 2016


cryogenic current comparator, direct current comparator, quantum Hall resistance, standard resistor, watt balance
Created July 11, 2016, Updated February 19, 2017