{"id":777,"date":"2019-01-31T12:34:52","date_gmt":"2019-01-31T09:34:52","guid":{"rendered":"http:\/\/new.yetri.am\/?p=777"},"modified":"2019-01-31T12:34:52","modified_gmt":"2019-01-31T09:34:52","slug":"modulators-for-tv-transmitters","status":"publish","type":"post","link":"https:\/\/milcom.am\/?p=777","title":{"rendered":"MODULATORS\u00a0\u00a0 FOR\u00a0 TV-TRANSMITTERS"},"content":{"rendered":"<p style=\"font-weight: 400;\">Modulators are intended for carrier frequency formation and \u00a0TV-signal frequency\u00a0translation (image and sound) to necessary TV- channel frequency.<\/p>\n<p style=\"font-weight: 400;\">Modulators are used in TV-transmitters, cable TV systems, MMDS and other systems of TV-signal\u00a0transmitting.<\/p>\n<p style=\"font-weight: 400;\"><u>Carries out:<\/u><\/p>\n<ul style=\"font-weight: 400;\">\n<li>stabilization of sound and image carrier frequencies by the synthesizers based on the thermos-tatted\u00a0frequency oscillator;<\/li>\n<li>forming of signal with single side band by the SAW filter;<\/li>\n<li>stabilization of output signal level;<\/li>\n<li>indication of video signal absent;<\/li>\n<li>indication of over modulation of audio signal;<\/li>\n<li>high amplitude and frequency linearity of the section;<\/li>\n<li>correction of amplitude non- linearity of power amplifier of the TV-transmitters;<\/li>\n<li>balanced input for audio signal.<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">\n<p style=\"font-weight: 400;\"><strong>SPECIFICATIONS<\/strong><\/p>\n<table style=\"font-weight: 400;\" width=\"480px\">\n<tbody>\n<tr>\n<td><\/td>\n<td><strong>Image<\/strong><\/td>\n<td><strong>\u00a0Sound<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Frequency range<\/td>\n<td>20&#8230;6C106 Hz<\/td>\n<td>20&#8230;14C103 Hz<\/td>\n<\/tr>\n<tr>\n<td>Modulation type<\/td>\n<td>amplitude<\/td>\n<td>frequency<\/td>\n<\/tr>\n<tr>\n<td>Nominal level of input signal<\/td>\n<td>1V(at Rinp=75 Ohms)<\/td>\n<td>0,75V(at Rinp=600 Ohms)<\/td>\n<\/tr>\n<tr>\n<td>Input signal levels range<\/td>\n<td>0,5&#8230;1,5 V<\/td>\n<td>0,25&#8230;1,75 V<\/td>\n<\/tr>\n<tr>\n<td>Signal\/noise ratio<\/td>\n<td>60 dB<\/td>\n<td>60 dB<\/td>\n<\/tr>\n<tr>\n<td>Amplitude frequency\u00a0characteristics unevenness of\u00a0\u00a0video signal<\/td>\n<td>\u00b10,2 dB<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-weight: 400;\">\n<table style=\"font-weight: 400;\" width=\"480px\">\n<tbody>\n<tr>\n<td>Output signal to channel intermodulation products ratio<\/td>\n<td>60 dB<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Non-linearity\u00a0of carrier frequency:<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 \u00a0 \u00a0 \u00a0-in VHF range<\/td>\n<td>\u00b1 50 Hz<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 \u00a0 \u00a0 \u00a0-in UHFrange<\/td>\n<td>\u00b1 200 Hz<\/td>\n<\/tr>\n<tr>\n<td>Power supply<\/td>\n<td>(220\u00b1 20) V<\/td>\n<\/tr>\n<tr>\n<td>Operating temperature range<\/td>\n<td>5&#8230;450\u0421<\/td>\n<\/tr>\n<tr>\n<td>HF signal output level at Rloading=50\/75 Ohms<\/td>\n<td>0,3&#8230;3 V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Modulators are intended for carrier frequency formation and \u00a0TV-signal frequency\u00a0translation (image and sound) to necessary TV- channel frequency. Modulators are used in TV-transmitters, cable TV systems, MMDS and other systems of TV-signal\u00a0transmitting. Carries out: stabilization of sound and image carrier<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"https:\/\/milcom.am\/index.php?rest_route=\/wp\/v2\/posts\/777"}],"collection":[{"href":"https:\/\/milcom.am\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/milcom.am\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/milcom.am\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/milcom.am\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=777"}],"version-history":[{"count":0,"href":"https:\/\/milcom.am\/index.php?rest_route=\/wp\/v2\/posts\/777\/revisions"}],"wp:attachment":[{"href":"https:\/\/milcom.am\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=777"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milcom.am\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=777"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milcom.am\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}