Low Cost High Linearity Solid State Digital Double Boxcar
作者:
Gary L. Samuelson,
David C. Ailion,
期刊:
Review of Scientific Instruments
(AIP Available online 1969)
卷期:
Volume 40,
issue 5
页码: 676-680
ISSN:0034-6748
年代: 1969
DOI:10.1063/1.1684034
出版商: AIP
数据来源: AIP
摘要:
In this article, we describe a digital solid state double boxcar of infinite holding time and very high linearity. It uses a Hewlett‐Packard (HP2212 A‐M3) voltage‐to‐frequency converter (VFC) whose output is accumulated on a running counter, thereby providing signal averaging with an infinite holding time. The combination of FET signal gates with zero offset and the highly linear VFC results in a linearity of better than ±0.01% over an input range of ±1.0 V, which is a considerable improvement over that available with other digital boxcars. Integrated circuit pulse generators of high stability provide gating times from a fraction of a microsecond to many seconds. A unique monitoring system allows ease of adjustment with a simultaneous ``master'' display of all gating and signal functions. Other features of this boxcar are extreme compactness, low cost, and very high stability.
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