| NOUN | artifact | pinger | a pulse generator used for echo sounding in sonar |
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| Meaning | A pulse generator used for echo sounding in sonar. | |
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| Part of | sonar, echo sounder, asdic | A measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return |
| Broader | pulse generator | A generator of single or multiple voltage pulses |
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