Humphreys, D A; Hudlicka, M*; Fatadin, I (2015) Calibration of wideband digital real-time oscilloscopes. IEEE Trans. Instrum. Meas., 64 (6). pp. 1716-1725.
Full text not available from this repository.Abstract
We describe a frequency selection algorithm for calibrating the impulse-response (vector frequency response) and timebase characteristics of Digital Real-Time Oscilloscopes (DRTO). The objective of the algorithm is allow the DRTO to be calibrated as closely as possible to a chosen frequency grid while optimizing oversampling, timebase fidelity and minimizing the uncertainty contribution due to instrument impairments. Measurement examples are given for cases where the measurement frequency can be selected by the user and where this frequency is predetermined. The use of Allan variance in the frequency-selection process is described and an algorithm and example for inter-channel delay measurement is presented. We also discuss the merits of representing the calibration results either as a convolutional correction or as an impulse response.
Item Type: | Article |
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Keywords: | Oscilloscope, Real-time, Sampling, Multi-sine, RF Communication |
Subjects: | Electromagnetics Electromagnetics > Wireless Communications |
Identification number/DOI: | 10.1109/TIM.2015.2407471 |
Last Modified: | 02 Feb 2018 13:13 |
URI: | http://eprintspublications.npl.co.uk/id/eprint/6675 |
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