| 摘要 |
PURPOSE:To facilitate waveform analysis by switching received wave waveform with waveform obtained by differentiating a received signal. CONSTITUTION:Received waveform 13 received by wave receiving section 1 is differentiated by a differentiating circuit 3 to make it differentiated waveform 14 and added to a trigger circuit 5. The output pulse from the trigger circuit 5 advances a counter 4 successively from ''1'' to ''3'' and switch-on signals 15, 16, 17 are distributed from a decoder 6 to analog switches 7, 8, 9. On the other hand, received waveform 13 is delayed by a delay circuit 12 so that above-mentioned signals are added to analog switches 7, 8, 9 when supplied. Consequently, while the switch-on signal 15 is sent out, a received wave signal 18 is supplied to an analyser 10 and a recorder 11. Similarly, when switch-on signals 16, 17 are sent out, received wave signals 19, 20 are supplied to the analyser 10 and recorder 11. |
