Title :
Automatic calibration of DC low level current at SCL
Author :
Lee, D.W.K. ; Chau, Y.C.
Author_Institution :
Gov. of the Hong Kong Special Administrative Region Stand. & Calibration Lab. (SCL), Hong Kong, China
Abstract :
At SCL, an automated system is developed to calibrate DC current sources and meters, including electrometers and femto-ammeters, from 100 pico-amperes (pA) down to 100 femto-amperes (fA). The system comprises an in-house developed control software, a ramping voltage generation circuitry and a precision air capacitor.
Keywords :
calibration; computerised instrumentation; electric current measurement; electrometers; DC current meter calibration; DC current source calibration; DC low level current; SCL; automated system; automatic calibration; current 100 pA to 100 fA; electrometers; femtoammeters; in-house developed control software; precision air capacitor; ramping voltage generation circuitry; Calibration; Capacitors; Current measurement; Generators; Integrated circuits; Ultrafast electronics; Voltage control; Electrometer; current measurement; current source;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250724
