{"id":1985,"date":"2022-10-03T16:44:48","date_gmt":"2022-10-03T07:44:48","guid":{"rendered":"https:\/\/www.kyu.kr\/?p=1985"},"modified":"2022-10-03T16:44:48","modified_gmt":"2022-10-03T07:44:48","slug":"%ec%98%a4%eb%94%94%ec%98%a4-%ec%95%84%eb%82%a0%eb%9d%bc%ec%9d%b4%ec%a0%80-%ec%82%ac%ec%9a%a9%eb%b2%95-%ea%b3%b5%eb%b6%80","status":"publish","type":"post","link":"https:\/\/www.kyu.kr\/?p=1985","title":{"rendered":"\uc624\ub514\uc624 \uc544\ub0a0\ub77c\uc774\uc800 \uc0ac\uc6a9\ubc95 \uacf5\ubd80"},"content":{"rendered":"\n<p id=\"SE-1093e05f-727b-4d48-a3f1-db7d15aeed79\">HP8903B audio analyzer\ub97c \uc21c\uc804\ud788 \uc65c\uace1 \uce21\uc815\uc6a9\uc73c\ub85c \uad6c\uc785\ud588\uc2b5\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-d27037b3-5533-4068-8259-794aaa937f38\">THD \ubbf8\ud130 \uc911\uace0\ubcf4\ub2e4\ub294 \ud6e8\uc52c \uc2f8\uac8c \uc0b0 \uac83 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-18ecd51d-ce2a-4b71-bc89-9bb0355d76d7\">\uad6c\uc785\uc744 \ud588\uc73c\ub2c8 \uc0ac\uc6a9\ubc95\uc740 \uc775\ud600\uc57c \ud558\uaca0\uace0 \uae34 \uc5f0\ud734 \ub355\ubd84\uc5d0 \uc2dc\uac04\uc740 \uc788\uc73c\ub2c8 \ub9cc\uc838\ubd24\uc2b5\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-f5493340-da0e-45c5-b2c3-15279a5d5c5f\">\u200b<\/p>\n\n\n\n<p id=\"SE-1714079c-be4c-416e-9e02-0976e1943a23\">\uc870\uc791\ubc95\uc740 \uc26c\uc6e0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-676c03ed-0dd0-4cac-9f94-5f17bf9881ac\">FREQ \ubc84\ud2bc \ub204\ub974\uace0 \uc8fc\ud30c\uc218 \uc785\ub825, AMPTD \ubc84\ud2bc \ub204\ub974\uace0 \uc785\ub825\uc804\uc555 \uc785\ub825, AC LEVEL \ubc84\ud2bc \ub204\ub974\uace0 \ucd9c\ub825\uc804\uc555 \ud655\uc778,<\/p>\n\n\n\n<p id=\"SE-fa0f5ee4-be9c-41ca-8042-85b27326fcd6\">\uadf8 \ud6c4\uc5d0 \ud544\uc694\ud55c \ubc84\ud2bc\uc744 \uc544\ub798\uc5d0\uc11c \ucc3e\uc544 \ub204\ub974\uba74 7\uc138\uadf8\uba3c\ud2b8 LED\uc5d0 \uce21\uc815\uac12\uc774 \ub098\uc635\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-afae2bf3-723f-4765-8c3e-9e1f0bf38674\">AC LEVEL\uc744 \ubcf4\uace0 \uc2f6\uc73c\uba74 \uadf8\ub0e5 \ub204\ub974\uba74 \ub418\uace0 DC LEVEL\uc744 \ubcf4\uace0 \uc2f6\uc73c\uba74 S\ub97c \ub204\ub974\uace0 AC LEVEL \ubc84\ud2bc\uc744 \ub204\ub974\ub294 \uc2dd\uc785\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-936d5d2f-d2a7-44cd-b57f-05db9e45ce44\">S\uac00 Shift \ud0a4\ub124\uc694<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"632\" height=\"454\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image.png\" alt=\"\" class=\"wp-image-1986\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image.png 632w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-150x108.png 150w\" sizes=\"auto, (max-width: 632px) 100vw, 632px\" \/><\/figure>\n<\/div>\n\n\n<p id=\"SE-4dd85928-c795-4636-aefb-1e6ef43a83ce\">\uc704\uc5d0 \ud544\ud130\uac00 4\uac00\uc9c0\uac00 \uc788\ub294\ub370 \ub9e4\ub274\uc5bc\uc5d0 \ubcf4\ub2c8<\/p>\n\n\n\n<p id=\"SE-a3e5ec87-fd6f-4693-b86d-7d285228d6e2\">&#8211; C-MESSAGE WEIGHTING : CCITT weighting (band pass) \ud544\ud130\ub77c\uace0 \ud558\ub124\uc694. \uc774\uac8c \uc804\ud654\uac19\uc740 \uc74c\uc131 \uc751\uc6a9\uc744 \uc704\ud55c \ud544\ud130\uc778 \uac83 \uac19\uc2b5\ub2c8\ub2e4. \uc0c1\ub2f9\ud788 \ud611\ub300\uc5ed\uc785\ub2c8\ub2e4. \ub2e4\ub9cc, \uc774\uac78 \ucf1c\uba74 \ub098\uba38\uc9c0 3\uac1c\uc758 \ud544\ud130\ub294 \ucf24 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc989, \ub2e8\ub3c5 \uc0ac\uc6a9\uc785\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \ud611\ub300\uc5ed\uc774\ub77c \uce21\uc815\uac12\uc774 \uc81c\uc77c \uc88b\uc544\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-b33e9cfe-8d7f-4754-9579-0c5d8a66549a\">&#8211; 400Hz High pass: 400Hz \uc544\ub798\uc758 \uac83\ub4e4\uc744 \ucee4\ud305\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uba74 60Hz hum \uac19\uc740 \uac83\uc744 \ud544\ud130\ub9c1\ud560 \ub54c \uc4f4\ub2e4\uace0 \ud569\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-c66b2ba7-4723-41e0-a315-a3d2eca66590\">&#8211; 30KHz\/80KHz Low pass: \uc624\ub514\uc624\uc5d0\uc11c \uc758\ubbf8\uc5c6\ub294 \ucd08\uace0\uc5ed\uc744 \ucee4\ud305\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-fe7b553f-6f5f-4773-8669-398ca714baa4\">\u200b<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"448\" height=\"439\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-4.png\" alt=\"\" class=\"wp-image-1990\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-4.png 448w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-4-150x147.png 150w\" sizes=\"auto, (max-width: 448px) 100vw, 448px\" \/><\/figure>\n<\/div>\n\n\n<p id=\"SE-7b1da8c0-3f3f-41e2-ab3d-09a72644562a\">\uc5ec\ub7ec \uc870\ud569\uc744 \ub9cc\ub4e4 \uc218 \uc788\ub294\ub370, \uc544\ub798\uc640 \uac19\uc740 \uc870\ud569\uc73c\ub85c \uce21\uc815\ud574\ubcf4\uae30\ub85c \ud588\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-11dcf38f-3197-4cd4-aac6-521ca2243c64\">30KHz \ud544\ud130\ub294 \uadf8\ub0e5 \uc870\ud569\uc774 \ub108\ubb34 \ub9ce\uc544\uc9c0\ub2c8 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uae30\ub85c \ud588\uc2b5\ub2c8\ub2e4<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"901\" height=\"148\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-1.png\" alt=\"\" class=\"wp-image-1987\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-1.png 901w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-1-800x131.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-1-150x25.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-1-768x126.png 768w\" sizes=\"auto, (max-width: 901px) 100vw, 901px\" \/><\/figure>\n<\/div>\n\n\n<p id=\"SE-7658f6af-4a5d-4331-af5a-2c0e94fecf5c\">\uba3c\uc800 SNR\uc785\ub2c8\ub2e4. \ub300\uc0c1 \uc570\ud504\ub294 \uc0c8\ub85c \ub9cc\ub4e0 PP \uc570\ud504\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-5d02dc48-14ab-45de-a747-a552ca7065e6\">1W \ucd9c\ub825\uc744 \ub9cc\ub4e4\uae30 \uc704\ud574 0.5V amplitude \uc785\ub825\uc744 \uc8fc\uace0 \uc57d 2.8V \ucd9c\ub825\uc774 \ub098\uc624\ub294 \uac83\uc744 \ud655\uc778\ud558\uace0 \uce21\uc815\ud588\uc2b5\ub2c8\ub2e4<\/p>\n\n\n\n<p id=\"SE-15a57b26-c82d-472d-a697-566114e11f1a\">\uc8fc\ud30c\uc218\ub294 1KHz\ub9cc \ud574\ubd24\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"904\" height=\"303\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-2.png\" alt=\"\" class=\"wp-image-1988\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-2.png 904w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-2-800x268.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-2-150x50.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-2-768x257.png 768w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p id=\"SE-eaeb3432-55a0-4e3e-98ce-1eb1fee3d523\">1W \ucd9c\ub825\uc2dc \uce21\uc815\uac12\uc774 \uc800\ub807\uc2b5\ub2c8\ub2e4. \uc774\ubc88\uc5d4 \ucd5c\ub300\ucd9c\ub825\uc2dc \uce21\uc815\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p id=\"SE-3a6391ed-f42c-440a-9317-d14140f186c4\">1V amplitude \uc785\ub825\uc744 \uc8fc\uace0 \ubcfc\ub968\uc744 \ub05d\uae4c\uc9c0 \ub3cc\ub838\uc2b5\ub2c8\ub2e4. \uc57d 17.8V \uc815\ub3c4\uc758 AC level\uc774 \ub429\ub2c8\ub2e4<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"899\" height=\"289\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-3.png\" alt=\"\" class=\"wp-image-1989\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-3.png 899w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-3-800x257.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-3-150x48.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2022\/10\/image-3-768x247.png 768w\" sizes=\"auto, (max-width: 899px) 100vw, 899px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p id=\"SE-cc8bf960-a544-4026-8d45-deb1d1764900\">\uc544\ubb34\ud2bc \uce21\uc815\uc744 \uc774\ub807\uac8c \ud588\ub294\ub370, \uc5b4\ub5a4 \uba54\uc2dc\uc9c0\ub97c \uc5bb\uc5b4\uc57c \ud558\ub294\uc9c0\ub294 \uc798 \ubaa8\ub985\ub2c8\ub2e4 ^^<\/p>\n\n\n\n<p id=\"SE-453d9e69-3554-4243-8ac3-b920d30bdaeb\">400Hz high pass \ud544\ud130\ub97c \ucf1c\uba74 1W\uc5d0\uc11c\ub294 5dB, \ucd5c\ub300 \ucd9c\ub825\uc5d0\uc11c\ub294 10dB\uc758 SNR\uc774 \uac1c\uc120\ub418\ubbc0\ub85c<\/p>\n\n\n\n<p id=\"SE-09b12418-8ca6-4b43-b2e0-6a863b59534c\">\uc81c\uc791\ud560 \ub54c \ubc30\uc120\uacfc \uc811\uc9c0\ub97c \ub354 \uc798\ud588\uc73c\uba74 \uc88b\uc558\uaca0\ub2e4 \uc774 \uc815\ub3c4\uc758 \uad50\ud6c8\uc744 \uc5bb\uc5b4\uc57c \ud558\ub294 \uac83\uc77c\uae4c\uc694?<\/p>\n\n\n\n<p id=\"SE-022dbb9f-8c78-4537-ad1c-20884c83efcf\">\u200b<\/p>\n\n\n\n<p id=\"SE-8c1c9897-d9ac-451a-96a5-0bbbbc3d7f6a\">\uc0c8\ub85c \uc7a5\ube44\ub97c \uc0c0\uaca0\ub2e4, \ub9c8\uce68 \uc570\ud504\ub3c4 \uc0c8\ub85c \ub9cc\ub4e4\uc5c8\uaca0\ub2e4, \uc2e0\ub098\uac8c \uce21\uc815\uc744 \ud574\ubd24\ub294\ub370<\/p>\n\n\n\n<p id=\"SE-bd45c5a3-d4b0-4d08-94f2-a0f8d56b905c\">1\ub144\uc5d0 \uba87 \ubc88\uc774\ub098 \uc0ac\uc6a9\ud558\uac8c \ub420\uc9c0\ub294 \uc798 \ubaa8\ub974\uaca0\uc2b5\ub2c8\ub2e4 ^^<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HP8903B audio analyzer\ub97c \uc21c\uc804\ud788 \uc65c\uace1 \uce21\uc815\uc6a9\uc73c\ub85c \uad6c\uc785\ud588\uc2b5\ub2c8\ub2e4 THD \ubbf8\ud130 \uc911\uace0\ubcf4\ub2e4\ub294 \ud6e8\uc52c \uc2f8\uac8c \uc0b0 \uac83 \uac19\uc2b5\ub2c8\ub2e4. \uad6c\uc785\uc744 \ud588\uc73c\ub2c8 \uc0ac\uc6a9\ubc95\uc740 \uc775\ud600\uc57c \ud558\uaca0\uace0 \uae34 \uc5f0\ud734 \ub355\ubd84\uc5d0 \uc2dc\uac04\uc740 \uc788\uc73c\ub2c8 \ub9cc\uc838\ubd24\uc2b5\ub2c8\ub2e4 \u200b \uc870\uc791\ubc95\uc740 \uc26c\uc6e0\uc2b5\ub2c8\ub2e4. FREQ \ubc84\ud2bc \ub204\ub974\uace0 \uc8fc\ud30c\uc218 \uc785\ub825, AMPTD \ubc84\ud2bc \ub204\ub974\uace0 \uc785\ub825\uc804\uc555 \uc785\ub825, AC LEVEL \ubc84\ud2bc \ub204\ub974\uace0 \ucd9c\ub825\uc804\uc555 \ud655\uc778, \uadf8 \ud6c4\uc5d0 \ud544\uc694\ud55c \ubc84\ud2bc\uc744 \uc544\ub798\uc5d0\uc11c \ucc3e\uc544 \ub204\ub974\uba74 7\uc138\uadf8\uba3c\ud2b8 LED\uc5d0 \uce21\uc815\uac12\uc774 &hellip;<br \/><a href=\"https:\/\/www.kyu.kr\/?p=1985\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\"><span class=\"screen-reader-text\">\uc624\ub514\uc624 \uc544\ub0a0\ub77c\uc774\uc800 \uc0ac\uc6a9\ubc95 \uacf5\ubd80<\/span> \ub354\ubcf4\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":1986,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[227,226,204,225,224,223],"class_list":["post-1985","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-108","tag-ccitt-weighting","tag-high-pass","tag-hp8903b","tag-low-pass","tag-sinad","tag-snr"],"_links":{"self":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/1985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1985"}],"version-history":[{"count":1,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/1985\/revisions"}],"predecessor-version":[{"id":1991,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/1985\/revisions\/1991"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/media\/1986"}],"wp:attachment":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}