| 摘要 |
PURPOSE:To view the amplitude of a signal instantaneously at a desired measurement point by latching the analog/digital conversion output of a signal to be measured when a measurement point signal is outputted, and varying it to a display value which can be viewed. CONSTITUTION:When a bipolar signal is inputted, a waveform shaping circuit 1' outputs an enable pulse and a rectified signal in synchronism with the leading of the bipolar signal. The rectified signal is supplied to an analog/digital converter 2, which outputs an amplitude digital value in response to a sample clock. A latch clock generating circuit 3', on the other hand, generates a latch clock in synchronism with the enable pulse from the waveform shaping circuit 1' and the sample clock and a latch circuit 4' latches the current digital value, so that the display value which can be viewed is outputted through an output means 5.
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