| 摘要 |
<p>The signal pulse trains and the reference pulse trains are compared, and the result operates a display. The frequency of the reference pulse trains is lower, and the keying ratio is approx. the same as those of the tested pulse train. The generator is synchronised by the tested pulse train, so that both voltages become congruent. They are compared in a coincidence circuit which controls a display for coincidence or non-coincidence. The system includes five gates which are connected via resistors and capacitors.</p> |
