{"id":4665,"date":"2019-04-12T01:07:26","date_gmt":"2019-04-12T00:07:26","guid":{"rendered":"http:\/\/www.crowave.com\/blog\/?p=4665"},"modified":"2019-04-12T01:07:26","modified_gmt":"2019-04-12T00:07:26","slug":"signal-generator-siemens-w2008","status":"publish","type":"post","link":"https:\/\/www.crowave.com\/blog\/2019\/04\/12\/signal-generator-siemens-w2008\/","title":{"rendered":"Signal generator Siemens W2008"},"content":{"rendered":"<p>Danas je nabavljen generator signala frekvencije podesive u rasponu 0,2 &#8211; 18600 kHz i amplitude podesive u rasponu -70 do +10 dB, proizvod njema\u010dke tvrtke Siemens, oznake W2008 iz 1970-tih godina. Tvrtku Siemens je davne 1847. godine osnovao njema\u010dki izumitelj Werner von Siemens te se do danas razvila u jednu od vode\u0107ih svjetskih tvrtki na podru\u010dju elektronike, elektrotehnike, telekomunikacija i drugih srodnih grana tehnike.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_03.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4668\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_03-1024x452.jpg\" alt=\"level_oscillator_siemens_w2008 _03\" width=\"1024\" height=\"452\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_03-1024x452.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_03-300x133.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_03-768x339.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_02.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4667\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_02-1024x721.jpg\" alt=\"level_oscillator_siemens_w2008 _02\" width=\"1024\" height=\"721\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_02-1024x721.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_02-300x211.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_02-768x540.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_01.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4666\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_01-1024x474.jpg\" alt=\"level_oscillator_siemens_w2008 _01\" width=\"1024\" height=\"474\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_01-1024x474.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_01-300x139.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_01-768x355.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Za LEVEL OSCILLATOR W2008 nismo uspjeli na\u0107i nikakvu dokumentaciju, no kontrole na prednjoj plo\u010di dobro su ozna\u010dene i odmah se mo\u017ee utvrditi njihova uloga:<\/p>\n<ul>\n<li>S1 &#8211; sklopka (atenuator) za odabir ja\u010dine izlaznog signala u koracima od 10 dB<\/li>\n<li>S2 &#8211; sklopka za uklju\u010denje ili isklju\u010denje izlaznog signala na priklju\u010dnicama<\/li>\n<li>S3 &#8211; sklopka za namje\u0161tanje izlazne impedancije: izravni izlaz 75 \u2126 na koaksijalnu priklju\u010dnicu Bu1 ili izlaz 0-600 \u2126 preko prilagodnog transformatora na priklju\u010dnice Bu2. Zbog frekvencijskog ograni\u010denja prilagodnog transformatora izlazi na Bu2 mogu se koristiti u rasponu frekvencija 0,2 &#8211; 1600 kHz nakon \u010dega amplituda signala po\u010dinje opadati i ne podudara se sa pokazivanjem indikacijskog instrumenta.<\/li>\n<li>P1 i P2 &#8211; potenciometri za grubo i fino namje\u0161tanje ja\u010dine izlaznog signala unutar pojedinog opsega odabranog sklopkom S1<\/li>\n<li>Bu1 i Bu2 &#8211; priklju\u010dnice izlaznog signala<\/li>\n<li>S5 &#8211; sklopka za kontrolu glavnog oscilatora: interni oscilator ili kontrola nekim vanjskim oscilatorom preko priklju\u010dnice Bu7 na zadnjoj strani ure\u0111aja<\/li>\n<li>S6 &#8211; sklopka za odabir rezolucije kod namje\u0161tanja izlazne frekvencije, pomak decimalne to\u010dke na displeju (100 Hz ili 10 Hz)<\/li>\n<li>S7 &#8211; opcionalna kontrola koja nije ugra\u0111ena u na\u0161 ure\u0111aj, a omogu\u0107uje zaklju\u010davanje namje\u0161tene frekvencije oscilatora na rezoluciju 10 Hz kako bi se postigla bolja stabilnost frekvencije izlaznog signala na najmanjoj rezoluciji<\/li>\n<li>f &#8211; ve\u0107i dvostruki gumb za odabir frekvencije u rezolucijama x10 i x100, te manji gumb za fini odabir frekvencije u rezoluciji x1 (ovisno o polo\u017eaju sklopke S6)<\/li>\n<li>Bu7 &#8211; priklju\u010dnica za vanjsku kontrolu oscilatora (u kombinaciji sa sklopkom S5)<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4669\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04-1024x989.jpg\" alt=\"level_oscillator_siemens_w2008 _04\" width=\"1024\" height=\"989\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04-1024x989.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04-300x290.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04-768x742.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_04.jpg 1754w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4678\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13-1024x995.jpg\" alt=\"level_oscillator_siemens_w2008 _13\" width=\"1024\" height=\"995\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13-1024x995.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13-300x292.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13-768x746.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_13.jpg 1740w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_14.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4679\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_14-1024x426.jpg\" alt=\"level_oscillator_siemens_w2008 _14\" width=\"1024\" height=\"426\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_14-1024x426.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_14-300x125.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_14-768x320.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Unutra\u0161njost generatora signala W2008 ugodno nas je iznenadila vrlo kvalitetnom modularnom izvedbom komponenti koje nisu vi\u0161eslojno natrpane unutar ku\u0107i\u0161ta (kako to \u010desto biva kog RF ure\u0111aja) te je lako raspoznati veze izme\u0111u komponenti i izvr\u0161iti mjerenja na njima. Na zadnjoj strani nalazimo shemu razmje\u0161taja pojedinih modula unutar ku\u0107i\u0161ta \u0161to dodatno olak\u0161ava njihovu identifikaciju. Zanimljivo je da je unutar ku\u0107i\u0161ta pri\u010dvr\u0161\u0107ena i mala vre\u0107ica sa alatom i dijelovima za eventualnu ugradnju opcionalnog modula za zaklju\u010davanje frekvencije oscilatora.<\/p>\n<p>Generatora signala W2008 sastoji se od slijede\u0107ih osnovnih modula:<\/p>\n<ul>\n<li>promjenjivi oscilator frekvencije 24000,2 &#8211; 42600 kHz<\/li>\n<li>kristalni oscilator frekvencije 24000 kHz sa logi\u010dkim djeliteljem sa 10 \u010dime se dobiva i frekvencija od 2400 kHz<\/li>\n<li>mje\u0161a\u010d sa poja\u010dalom<\/li>\n<li>izlazno poja\u010dalo sa niskopropusnim filtrom<\/li>\n<li>modul sa transformatorom impedancije<\/li>\n<li>broja\u010d frekvencije sa LED indikatorom<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_05.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4670\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_05-1024x520.jpg\" alt=\"level_oscillator_siemens_w2008 _05\" width=\"1024\" height=\"520\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_05-1024x520.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_05-300x152.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_05-768x390.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Transformator koji se vidi na slikama je transformator impedancije 75 &#8211; 124 &#8211; 150 &#8211; 600 \u2126. Atenuatorski otpornici za korake od 10 dB nalaze se oklopljeni na samoj sklopki atenuatora, a dva potenciometra za grubo i fino pode\u0161avanje ja\u010dine signala uo\u010davaju se iza mjernog instrumenta. Plo\u010dica sa logi\u010dkim integriranim krugovima je broja\u010d frekvencije za prikaz na displeju.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_16.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4681\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_16-1024x768.jpg\" alt=\"level_oscillator_siemens_w2008 _16\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_16-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_16-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_16-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_07.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4672\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_07-1024x768.jpg\" alt=\"level_oscillator_siemens_w2008 _07\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_07-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_07-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_07-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Gore se vidi oklopljeno metalno ku\u0107i\u0161te promjenjivog oscilatora frekvencije 24000,2 &#8211; 42600 kHz sa mehanizmom odabira \u017eeljene frekvencije preko vanjskih kontrola. Iznad ku\u0107i\u0161ta oscilatora vidi se dio mati\u010dne plo\u010de u koju su utaknuti ostali moduli ure\u0111aja. Dolje je bolji pogled na mehanizam bira\u010da frekvencije i potenciometre atenuatora.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_09.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4674\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_09-1024x589.jpg\" alt=\"level_oscillator_siemens_w2008 _09\" width=\"1024\" height=\"589\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_09-1024x589.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_09-300x173.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_09-768x442.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4673\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08-904x1024.jpg\" alt=\"level_oscillator_siemens_w2008 _08\" width=\"904\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08-904x1024.jpg 904w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08-265x300.jpg 265w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08-768x870.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_08.jpg 1728w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/a><\/p>\n<p>Pogled iz drugog kuta na plo\u010dicu ili modul bira\u010da frekvencije (gore) i mati\u010dnu plo\u010du sa promjenjivim oscilatorom u pozadini (dolje).<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_10.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4675\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_10-1024x768.jpg\" alt=\"level_oscillator_siemens_w2008 _10\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_10-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_10-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_10-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4676\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11-1024x657.jpg\" alt=\"level_oscillator_siemens_w2008 _11\" width=\"1024\" height=\"657\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11-1024x657.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11-300x192.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11-768x493.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_11.jpg 1743w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Pribor za ugradnju modula zaklju\u010davanja frekvencije (gore) i shema razmje\u0161taja modula u unutra\u0161njosti (dolje).<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_17.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4682\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_17-1024x442.jpg\" alt=\"level_oscillator_siemens_w2008 _17\" width=\"1024\" height=\"442\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_17-1024x442.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_17-300x130.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_17-768x332.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_12.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4677\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_12-768x1024.jpg\" alt=\"level_oscillator_siemens_w2008 _12\" width=\"768\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_12-768x1024.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_12-225x300.jpg 225w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_12.jpg 1728w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p>Pogled na module utaknute na mati\u010dnu plo\u010du. Gore se vidi zajedni\u010dki modul niskopropusnog filtra i izlaznog poja\u010dala, a dolje su redom: mre\u017eni transformator, ispravlja\u010d i stabilizator napajanja, prazno mjesto za opcionalni modul zaklju\u010davanja frekvencije, oscilator 24 \/ 2,4 MHz, mje\u0161a\u010d (modulator) sa poja\u010dalom i na kraju ve\u0107 spomenuti\u00a0zajedni\u010dki modul niskopropusnog filtra i izlaznog poja\u010dala.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_15.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4680\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_15-1024x768.jpg\" alt=\"level_oscillator_siemens_w2008 _15\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_15-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_15-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_15-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_18.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4683\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_18-1024x768.jpg\" alt=\"level_oscillator_siemens_w2008 _18\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_18-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_18-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_18-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Gore je otvoreno metalno ku\u0107i\u0161te promjenjivog oscilatora frekvencije 24000,2 &#8211; 42600 kHz, a dolje su izva\u0111eni moduli sa mati\u010dne plo\u010de: zajedni\u010dki modul niskopropusnog filtra i izlaznog poja\u010dala, mje\u0161a\u010d (modulator) sa poja\u010dalom, oscilator 24 MHz sa logi\u010dkim djeliteljem sa 10 (2,4 MHz), te\u00a0ispravlja\u010d i stabilizator napajanja.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4685\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20-1024x437.jpg\" alt=\"level_oscillator_siemens_w2008 _20\" width=\"1024\" height=\"437\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20-1024x437.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20-300x128.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20-768x328.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_20-1170x500.jpg 1170w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_21.jpg\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4686\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_21-1024x426.jpg\" alt=\"level_oscillator_siemens_w2008 _21\" width=\"1024\" height=\"426\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_21-1024x426.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_21-300x125.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_21-768x320.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Ne treba puno mudrosti da se zaklju\u010di kako se izlazni opseg frekvencija u rasponu 0,2 &#8211; 18600 kHz dobiva mije\u0161anjem (razlikom) frekvencija oscilatora koji radi u rasponu 24000,2 &#8211; 42600 kHz i oscilatora koji radi na 24000 kHz. Ovo je bilo potrebno napraviti jer je te\u0161ko konstruirati stabilni promjenjivi oscilator koji bi izravno pokrivao frekvencijski opseg 0,2 &#8211; 18600 kHz. Frekvencija od 2400 kHz pak se koristi kao referentna frekvencija za brojilo frekvencije.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_22.gif\" rel=\"lightbox[4665]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4687\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_22.gif\" alt=\"level_oscillator_siemens_w2008 _22\" width=\"814\" height=\"289\" \/><\/a><\/p>\n<p>Testiranje je pokazalo da je na\u0161 primjerak generatora signala W2008 ispravan, frekvencija je to\u010dna i stabilna, sinusoida je bez izobli\u010denja, amplituda signala zadr\u017eava zadanu vrijednost u \u010ditavom deklariranom frekvencijskom opsegu. S obzirom da pokriva vrlo \u0161irok opseg frekvencija (od audio frekvencija do kratkog vala) ovaj Siemensov W2008 odli\u010dno bi upotpunio mjernu opremu elektroni\u010dke radionice no problem mo\u017ee biti \u0161to je za njegov smje\u0161taj potrebno osigurati poprili\u010dno slobodnog prostora na polici. Sve u svemu, dobro je dok je to jedini problem \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Danas je nabavljen generator signala frekvencije podesive u rasponu 0,2 &#8211; 18600 kHz i amplitude podesive u rasponu -70 do +10 dB, proizvod njema\u010dke tvrtke Siemens, oznake W2008 iz 1970-tih godina. Tvrtku Siemens je davne 1847. godine osnovao njema\u010dki izumitelj Werner von Siemens te se do danas razvila u jednu od vode\u0107ih svjetskih tvrtki na [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[],"class_list":{"0":"post-4665","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-generatori-signala","8":"czr-hentry"},"jetpack_featured_media_url":"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/level_oscillator_siemens_w2008-_06.jpg","_links":{"self":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4665","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/comments?post=4665"}],"version-history":[{"count":1,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4665\/revisions"}],"predecessor-version":[{"id":4688,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4665\/revisions\/4688"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media\/4671"}],"wp:attachment":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media?parent=4665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/categories?post=4665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/tags?post=4665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}