Naslov
Determination of digital voltmeter input parameters

Autori
Leniček, Ivan ; Ilić, Damir ; Malarić, Roman

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 2007 IEEE Instrumentation and Measurement Technology Conference / Roman Morawski - Varšava : Institute of Electrical and Electronics Engineers (IEEE), 2007

ISBN
1-4244-1080-0

Skup
2007 IEEE Instrumentation and Measurement Technology Conference

Mjesto i datum
Varšava, Poljska, 01.05.2007. - 03.05.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
digital voltmeter; input parameters

Sažetak
The digital voltmeter input circuitry can contribute to measurement uncertainty, and is therefore important to characterize it. In this paper the methods for the determination of input resistance, capacitance and input bias current of the precise digital voltmeters HP 3458A are presented. The method with voltage source and high-ohmic divider resistor has been developed for the determination both the input offset currents IS, as well as the input resistance RV. The second method with source of linear voltage ramp and picoampermeter is primary used for the determination of input capacitance CV. It was shown that: internal current of voltmeters is in the range of picoamperes, with relative instability of approximately &plusmn ; 0, 1 ; input resistance is in the range of T Ω with the relative instability of &plusmn ; 0, 15 ; and the input capacitance was measured with an uncertainty of a few picofarads

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA