Title :
Design and performance evaluation of the NIST digital impedance bridge
Author :
Waltrip, B.C. ; Oldham, N.M.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
June 27 1994-July 1 1994
Abstract :
An impedance bridge that compares two-terminal standard inductors to characterized resistors is described. A dual-channel digitally synthesized source and sampling digital multimeter are used to generate and measure relevant bridge signals. A linear interpolation algorithm is used to autocalibrate the bridge to a 1 nF air-dielectric capacitor. An intercomparison of the new bridge with existing measurement standards in the low audio frequency range for inductors 1 mH to 10 H is reported.<>
Keywords :
automatic test equipment; bridge instruments; calibration; digital multimeters; electric impedance measurement; inductors; interpolation; measurement standards; NIST digital impedance bridge; air-dielectric capacitor; audio frequency range; autocalibration; bridge signals; dual-channel digitally synthesized source; intercomparison; linear interpolation algorithm; measurement standards; sampling digital multimeter; two-terminal standard; Bridges; Capacitors; Impedance; Inductors; Interpolation; NIST; Resistors; Sampling methods; Signal generators; Signal synthesis;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333190
