A wideband sampling voltmeter

Author

Souders, T. Michael ; Waltrip, Bryan Cristopher ; Laug, Owen B. ; Deyst, J.P.

Author_Institution

Dept. of Commerce, Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA

Volume

46

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

947

Lastpage

953

Abstract

A high-accuracy sampling voltmeter, designed to span the frequency range of 10 Hz-200 MHz, is described. The instrument operates autonomously, at a measurement update rate of at least one per second. A novel quasiequivalent time sampling process is used, with a custom strobed comparator as the sampling device and decision element. The architecture and control are presented, along with the time-base design principles. Major error sources associated with the time-base are also discussed

Keywords

analogue-digital conversion; comparators (circuits); digital-analogue conversion; error analysis; feedback; signal sampling; time bases; voltage measurement; voltmeters; 10 Hz to 200 MHz; 2.3 GHz; DAC; NIST; custom strobed comparator; decision element; error sources; feedback; quasiequivalent time sampling process; sampling device; time-base design; wideband sampling voltmeter; Bandwidth; Error correction; Frequency measurement; Instruments; NIST; Quantization; Sampling methods; Signal sampling; Voltmeters; Wideband;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.650806

Filename

650806