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		<em>Rustamaji Rustamaji</em>
								<br />Jurusan Teknik Elektro, Institut Teknologi Nasional		<br />Indonesia	</p>

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		<em>Kania Sawitri</em>
								<br />Jurusan Teknik Elektro, Institut Teknologi Nasional		<br />Indonesia	</p>

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	<div id="articleTitle"><h3>Perancangan Pembangkit dan Detektor Sinyal Beacon Black Box Locator Acoustic  37,5 kHz atau Pinger</h3></div>
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		<h4>Abstract</h4>
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		<div><em>Black box </em>yang terdiri <em>cockpit voice recorder </em>dan <em>flight data recorder </em>dapat dideteksi lokasinya karena dilengkapi dengan <em>beacon black box locator acoustic </em>37,5 kHz atau <em>pinger</em> yang memancarkan sinyal akustik 37,5 kHz. Untuk mendeteksi sinyal <em>pinger </em>yang mempunyai frekuensi 37,5 kHz, digunakan detektor sinyal <em>pinger</em>, yang mampu mendeteksi gelombang <em>ultrasonic</em> di dalam air pada frekuensi 37,5  1 kHz. Makalah ini membahas perancangan pembangkit dan detektor sinyal <em>pinger</em> 37,5 kHz. Rancangan pembangkit sinyal <em>pinger</em> untuk membangkitkan sinyal <em>pinger</em> dengan frekuensi keluaran 37,5  1 kHz, terdiri rangkaian osilator, <em>pulse</em> <em>generator</em>, <em>pulse</em> <em>inverter</em>, modulator OOK, dan <em>audio</em> <em>amplifier</em>. Rancangan detektor sinyal <em>pinger</em> untuk mendeteksi sinyal <em>pinger</em> dengan frekuensi 37,5  1 kHz, terdiri rangkaian <em>band pass filter</em>, demodulator OOK, <em>audio</em><em> amplifier</em>, dan <em>loudspeaker</em>. Berdasarkan hasil pengujian, pembangkit sinyal <em>pinger</em> mampu membangkitkan sinyal <em>pinger</em> dengan amplitudo 12,2 V<sub>p-p</sub>, frekuensi 37,69 kHz, lebar pulsa (kondisi <em>on</em> sebesar 9,8 ms), dan PRF sebesar 1 s sedangkan detektor sinyal <em>pinger</em> mampu mendeteksi sinyal pinger 37,5 kHz dan menghasilkan keluaran berupa pulsa dengan amplitudo 9 V<sub>p-p</sub>, lebar pulsa 14 ms, dan PRF sebesar 1 s, serta suara yang dihasilkan terdengar jelas setiap interval 1 s.</div>
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							<p>Retrieved from "http://en.wikipedia.org/w/index.php?title=Underwater_locator_beacon&amp;oldid=647781716".</p>
							<p>Venugopalan Pallayil, Mandar Chitre, Subash Kuselan, Amogh Raichur, Manu Ignatius, and John R. Potter. Development of a Second-Generation Underwater Acoustic Ambient Noise Imaging Camera. IEEE Journal of Oceanic Engineering, VOL. 41, NO. 1, January 2016.</p>
							<p>Sylvie Breton; Mohamed Benbouzid. Sensor Conditioning for Ultrasonic Remote Sensing Immersion. Journal of Surveying and Mapping Engineering Jun, 2013, Vol. 1 Iss. 1, PP. 7-14.</p>
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