JPS60109059U - waveform recording device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Figure 1 is a block diagram of a conventional diagnostic waveform recorder;
The figure is a block diagram showing an embodiment of the present invention, Figures 3a and b
are waveform diagrams showing an analog input waveform and a delayed waveform, respectively. In the figure, 1...sample hold circuit, 2...
A/D conversion circuit, 3...control computer, 5...
・Waveform memory, 7... Analog delay element circuit, 8...
- Drive clock circuit. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Scope of utility model registration request] (1) In a diagnostic waveform recording device that samples an analog input waveform through a sample-hold circuit, converts it into a digital signal, and then records it in a waveform memory, an analog delay circuit is provided before the sample-hold circuit,
A waveform recording device characterized in that a circuit downstream of the analog delay circuit starts to be driven after a diagnostic timing occurs. (2) The scope of the utility model registration claim, characterized in that when the analog delay circuit is a multi-stage delay element circuit and the sampling output thereof is read into a waveform memory, the drive clock frequency of the analog multi-stage delay element circuit is cut down. The waveform recording device according to item 1 of the above.