| 摘要 |
<p>PURPOSE:To send only a pulse with a prescribed waveform to a transmission output line by allowing a changeover switch to select a dummy load when the waveform of the pulse to be sent does not satisfy a prescribed waveform and allowing the changeover switch to select a transmission output line when the waveform satisfies the prescribed waveform. CONSTITUTION:A waveform comparison correction waveform generating section 6 compares a reference pulse waveform with the waveform of a pulse sent just before the storage in a waveform memory 4 by using a timing signal (a) from a timing control circuit 8 and applies its difference information to a waveform deciding circuit 9. The waveform deciding circuit 9 decides whether or not the pulse to be sent is a prescribed waveform and allows a changeover switch 31 to select a transmission output line when the waveform of the pulse to be sent is within a prescribed range and allows the changeover switch 31 to select a dummy load 32 when the waveform is at the outside of the prescribed range. Thus, the transmission of a pulse not preferred for the transmission is not sent to the transmission output line.</p> |
