The Computer Simulation Study Of "Nose-to-Nose" Calibration Technology For Broadband Sampling Oscilloscope

The paper expounds the principle, process of the realization and the advantages of the "Nose-to-Nose" calibration technology, based on the introducing of the background of the "Nose-to-Nose" calibration technology to be developed.The content of the research in the paper is taking the entirely and systemic research of the key theory and methods of the "Nose-to-Nose" calibration technology by the PSPICE software. This is very important for the realistic of the "Nose-to-Nose" technology, and it is helpful in establishing national impulse parameter standard. The paper described from three parts as followed:Firstly, the computer simulations about the sampler of the single sampling oscilloscope are performed. Including the effect of the "kick-out" impulse, which is caused by the changment of the key parameters in the sampler circuit, and the argumentation about the unbalance of the sample caused by the asymmetry of the key parameters. Therefore, the new viewpoint is put forward that the leak of the strobe impulse is one of the reasons of the "kick-out" impulse.Secondly, the computer simulation focus on the "Nose-to-Nose" connection is completed. At the beginning, the impedance match of the connected circuit is introduced, then discuss about how to obtain the response of the "kick-out" impulse and the methods of simulation realization. At the end of this part, the simulation results, data of the measurement practically, and the conclusion in the literature are compared.Thirdly, two sampling oscilloscope, Agilent 86100A, are connected successfully. The configuration is introduced detailed and the simple procession to separate the kick-out pulse from the measured data is given. And the argumentation related to increase the precision, remove the noise and the deconvolution are conclude.