Title :
A method to improve cathode ray oscilloscope accuracy
Author :
Wilson, S. Kerry ; Delay, Patrick
Author_Institution :
Los Alamos Nat. Lab., NM, USA
fDate :
6/1/1994 12:00:00 AM
Abstract :
Distortion in cathode ray oscilloscopes limits the achieved accuracy in spite of piecewise linear correction. Polynomial functions for static and timebase nonlinearity corrections can achieve 4 to 5 times improvement inaccuracy compared to only about 2 times improvement for linear correction. For fast transient waveform recording this improvement is important in increasing dynamic range and decreasing waveform noise
Keywords :
approximation theory; cathode-ray oscilloscopes; curve fitting; measurement errors; oscilloscopes; polynomials; surface fitting; time bases; waveform analysis; accuracy; cathode ray oscilloscope; distortion; dynamic range; linear correction; piecewise linear correction; polynomial functions; static corrections; timebase nonlinearity corrections; transient waveform recording; waveform noise; Antenna measurements; Antennas and propagation; Cathodes; Current distribution; Electromagnetic measurements; Electromagnetic propagation; Geophysical measurements; Oscilloscopes; Surface fitting; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
