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- W3137348638 abstract "This paper proposes a method for measuring the linearity characteristics of lock-in amplifiers and describes how this method was used to measure the linearity factor of three nominally identical commercially-available digital lock-in amplifiers. The results of this study show that the linearity factor of these lock-in amplifiers can deviate from unity by more than 0.1% over a factor of 2 change in output. Moreover, the linearity characteristics of these lock-in amplifiers vary from one instrument to the next. The linearity characteristics were shown to be independent of the reference frequency, the time constant and the temporal profile of the signal being analysed. However, they were found to be dependent on the sensitivity settings of these instruments. The linearity characteristics of these instruments were observed not to change with time." @default.
- W3137348638 created "2021-03-29" @default.
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- W3137348638 date "2008-01-01" @default.
- W3137348638 modified "2023-09-26" @default.
- W3137348638 title "Absolute linearity calibration of lock-in amplifiers." @default.
- W3137348638 hasPublicationYear "2008" @default.
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