Title :
An accurate, self-checking digital teraohmmeter
Author :
Chen, G.C.C. ; Lin, W.Y.C. ; Hsu, J.C.M. ; Tsao, S.H.
Author_Institution :
Nat. Meas. Lab., Hsinchu, Taiwan
fDate :
June 27 1994-July 1 1994
Abstract :
We describe a new digital teraohmmeter achieving state-of-the-art linearity and long-term stability through the application of automatic self-checking circuits and routines. To ensure its voltage-independence up to 1000 V and <100 ppm linearity in measuring 10/sup 5/ to 10/sup 15/ /spl Omega/ (at /spl ges/1 pA), internal scaling and timing circuits have been upgraded for higher speed and better performance.<>
Keywords :
automatic test equipment; digital instrumentation; electric resistance measurement; ohmmeters; scaling circuits; timing circuits; 1 pA; 10/sup 5/ to 10/sup 15/ ohm; 1000 V; automatic self-checking circuits; digital teraohmmeter; internal scaling circuits; internal timing circuits; linearity; stability; voltage-independency; Capacitors; Counting circuits; Dispersion; Electrical resistance measurement; Electromagnetic shielding; JFET circuits; Operational amplifiers; Resistors; Voltage;
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.1994.333299
