JPS61131669U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of the triangular wave signal calibration device according to this invention, Fig. 2 is a timing chart showing the operation of Fig. 1, Fig. 3 is a diagram showing the RAMP waveform part of the signal to be measured and the sampling state, Figure 4 shows measurement using a conventional oscilloscope, Figure 5
The figure is a diagram illustrating how linearity is calculated by visually observing a waveform on the CRT tube surface of an oscilloscope. In the figure, 1 is a differentiation circuit, 2 is a waveform shaping circuit, 3 is a sampling pulse generation circuit, 4 is a frequency divider, 5 is a clock signal generator, 6 is a pulse counter/comparator, 7 is a high-speed A/D conversion circuit, 8 9 is a memory circuit, 9 is an arithmetic circuit, and 10 is a display circuit.

Claims (1)

[Scope of utility model registration request] A differentiating circuit that differentiates the input signal, a waveform shaping circuit that shapes the output signal of the differentiating circuit, a reference clock signal generator that generates a reference clock signal, and the above-mentioned signal only for a period controlled by the output of the waveform shaping circuit. a sampling pulse generation circuit that generates a pulse train of a reference clock signal or a period twice that of the reference clock signal; an A/D conversion circuit that is triggered by the sampling pulse train and sequentially A/D converts the input signal; and the A/D conversion circuit. A memory circuit for storing the conversion result of the above, an arithmetic circuit for calculating the linearity of the input signal from this set of A/D conversion data, and a display circuit for displaying the arithmetic result of the arithmetic circuit. Characteristic triangular wave signal calibration device.