| 摘要 |
PURPOSE:To display the voltage values of input signals simultaneously with the observation of their waveforms by adjusting the waveform position of a desired channel to be observed and simultaneously driving a digital display device. CONSTITUTION:The respective input signals of channels CH1-3 are applied via attenuators 2, 3, a switch S1, and vertical amplifiers 4-6 to a switching circuit 7, by which they are switched time-dividedly and are displayed on a CRT11. On the other hand, the voltage generated in the position regulator 12 of the CH3 by switching of the S1 displays a bright line on a CRT11; at the same time, in a decimal point selecting circuit 1 cooperating with the attenuator 2, the bright line of the CH3 is converted to the value associating to the input sensitivity of the CH1, and is applied to a display device 10 via an A/D converter 9, whereby the input level of the CH1 is displayed. At the same time, the position of a decimal point is displayed. Hence, the observation of the input waveforms and the displaying of their voltage values are made possible. |
