- Ukuqonda ukuvinjelwa, ukuhlanekezela, impendulo yemvamisa, kanye nama-harmonics kubalulekile ekuchazeni lokho okuboniswa yi-oscilloscope ku-amplifier yomsindo.
- Ngelabhorethri encane eyenziwe ekhaya (i-oscilloscope, ijeneretha noma isofthiwe kanye nemithwalo) ungalinganisa okokufaka, okuphumayo, i-THD, ukugcwala, umsindo kanye nokuhumza kwe-tube, i-transistor kanye nama-amplifiers e-class D.
- Ukuhlaziywa kwe-FFT kanye nempendulo yemvamisa kwembula ukusatshalaliswa kwe-harmonic kanye nokuziphatha kwethoni, kodwa kufanele kuhunyushwe njalo kumongo wokulalela kwangempela.
- Ukuhlanganiswa kwe-oscilloscope nesofthiwe yamahhala kuguqula ikhadi lomsindo libe yi-analyzer yomsindo ephumelelayo yokuthola ukunyakazisa, ukuphazamiseka, kanye nezinkinga zokuklama.
Uma siqala ukushintsha ama-amplifiers, ngokushesha noma kamuva sidlulela ngale kwalokho okuvamile "okuzwakala kunomsindo" bese siqala ukufuna ukwazi ukuthi i-circuitry yenzani ngempela ngaphakathi . Ikakhulukazi uma sithenga i-amplifier ye-Class D eshibhile ku-inthanethi noma sakha i-tube amp eyenziwe ekhaya, kuvamile ukuzibuza ukuthi ama-waveform esiwabona ku-oscilloscope asho ukuthi idivayisi ilungile, imbi, noma imane "ifanele intengo."
Abantu abaningi abathanda ukuzwa umsindo bayamangala ukubona ukuthi i-amplifier yama-euro ayishumi ethengwe ku-AliExpress ibonisa isignali "engcolile" ku-oscilloscope, ene-residue eshintshayo nomsindo we-frequency ephezulu, kodwa uma idlalwa ngomculo wangempela, umsindo uyamukeleka kakhulu. Lolu hlobo lwesimo lusiphoqa ukuthi siqonde ukuthi ukulinganisa i-amplifier yomsindo nge-oscilloscope akukhona nje ukuhlola ukuthi i-waveform ibukeka kahle yini , kodwa mayelana nokuhumusha lokho esikubonayo, ukwazi ukuthi yiziphi izivivinyo ezinenjongo, nokuthi singazifaka kanjani kumongo nalokho izindlebe zethu ezikuzwayo ngempela.
Kungani kunengqondo ukukala ama-amplifiers omsindo nge-oscilloscope
Uma uqala ezweni lama-audiophiles noma ukwakha i-DIY amplifier, kuvamile ukucabanga ukuthi uma nje into "ingaphambuki endlebeni," ilungile ngokwanele. Kodwa kuvela ilukuluku ngokushesha lokuhlola ukuthi i-amp iyanqamula yini, ukuthi ingenisa umsindo ongakanani, ukuthi iphatha kanjani amaza ahlukene , noma ukuthi iyanyakaza lapho kungafanele khona. Yilapho i-oscilloscope ingena khona, kanye nejeneretha yesiginali noma, uma kungenjalo, isofthiwe yamahhala esebenza njengejeneretha kanye ne-analyzer.
Isihluthulelo ukusetha uhlobo lwelebhu encane yasekhaya lapho singenza khona izivivinyo ezifana kakhulu nalezo ezisebhentshini lokuhlola lochwepheshe, kodwa ngamathuluzi atholakala kalula: i-oscilloscope ebonakalayo (noma i-oscilloscope yesofthiwe sisebenzisa ikhadi lomsindo), ijeneretha yomsebenzi noma i-PC ekhipha umsindo ophumayo, kanye neminye imithwalo kanye nama-attenuator. Ngalokho, ungathola idatha ewusizo kakhulu kunoma iyiphi i-amplifier, kusukela ku-amplifier yeshubhu ephezulu kuya ku-module ye-Class D eshibhile.
Ngaphezu kwalokho, lolu hlobo lokulinganisa lusiza ekususeni inganekwane yokuthi noma yiluphi uhlobo lwe-waveform "olubi" lufana nomsindo omubi. Ngezinye izikhathi okuphambene nalokho kuyiqiniso: amagrafu angase ashaqise, kodwa umsindo ovelayo uhambisana kahle nalokho esikulindele ohlelweni olungabizi noma olusezingeni lokuqala. Yiqiniso, imishini ephezulu idinga ama-waveform angenaphutha kanye nezibalo eziphambene, kodwa umongo ubalulekile.
Elinye iphuzu elithakazelisayo ukuthi eziningi zalezi zivivinyo zincike kusofthiwe yokuhlaziya umsindo yamahhala eyenzelwe ukusebenza nekhadi lomsindo lekhompyutha. Lezi zinhlelo zikuvumela ukuthi ubuke ama-spectra, ama-harmonics, impendulo yemvamisa, amazinga e-THD, nokuningi ngendlela ebonakalayo kakhulu, okwenza kube yisithasiselo esifanele se-oscilloscope yendabuko.
Ngamafuphi, ukulinganisa nge-oscilloscope kanye nesofthiwe akukona okonjiniyela kuphela: noma yimuphi umuntu othanda izinto zokuzijabulisa onakekela kancane futhi ozimisele ukufunda angathola okuningi kuma-amplifier akhe , alungise imiklamo, abone amaphutha, futhi, ngaphezu kwakho konke, aqonde ukuthi kungani imishini yakhe izwakala ngendlela ezwakala ngayo.
Imiqondo eyisisekelo ngaphambi kokuxhuma i-oscilloscope
Ngaphambi kokuthi uqale ukufaka i-oscilloscope probe kunoma iyiphi ingxenye yesekethe, kungumqondo omuhle ukuqonda imiqondo embalwa kagesi ezovela ngokuphindaphindiwe : impedance, ukuhlanekezela, impendulo yemvamisa, ama-harmonics, ukugcwala, umsindo wangemuva, i-mains hum, njll. Akudingeki ube unjiniyela, kodwa udinga ukwazi ukuthi uzama ukukala ini.
Ekuhlolweni kwe-audio amplifier, sihlala sihlukanisa phakathi kwengxenye yesignali yemvamisa ephansi (umsindo ngokwawo) kanye, kwezinye izilungiselelo, ingxenye yemvamisa yomsakazo (RF), isibonelo, lapho sisebenza nama-amplifier asebenza cishe nge-1 MHz. Kulezi zimo, kusetshenziswa izingxenye ezifana nama-DC blockers, ama-terminator angu-50 Ω, kanye nama-RF attenuator azinikele ngezinye izikhathi.
Ku-RF, uchungechunge olujwayelekile lungase lubukeke kanje: i-RF amplifier → i-DC blocker → umthwalo noma i-terminator engu-50 Ω . Ukuqonda umsebenzi wengxenye ngayinye kuvimbela amaphutha abizayo, njengoba sibhekene namazinga wamandla kanye nama-frequency lapho ukungaboni ngaso linye kungalimaza okuthile ngokushesha. Nokho, emsindweni omsulwa, isimo siyashintsha, futhi esikhundleni sokukhathazeka ngemigqa engu-50 Ω, sigxila ekuphazamisekeni kokufaka nokukhipha, ukuhlanekezela, ukunqunywa, nomsindo.
Ngisho ne-oscilloscope elula isenza sikwazi ukubuka ama-waveform ngokuhamba kwesikhathi, ukubona ukunqunywa, ukunyakazisa, ukuphakama okungavamile, umsindo ovunguzayo, noma umsindo ovama kakhulu . Uma futhi inomsebenzi we-FFT, noma uma siyihlanganisa nesofthiwe yokuhlaziya, singabona nokuqukethwe kwemvamisa kanye nokusatshalaliswa kwe-harmonic, okuvula umnyango wokulinganisa impendulo ye-THD kanye nemvamisa okunembile.
Okokugcina, kubalulekile ukucabangela ukulinganiselwa kwemishini yokulinganisa ngokwayo: ububanzi bamandla kagesi obuvumelekile, impedance yokufaka, i-bandwidth, uhlobo lwe-probe, njll. Ukwazi lolu lwazi kubalulekile ukuze kunqunywe ukuthi singaxhuma i-oscilloscope ngqo kumphumela we-amplifier noma ukuthi sidinga i-probe ye-attenuator engu-10:1 noma i-attenuator eyengeziwe ukuze sigweme ukudlula ububanzi noma ukushintsha kakhulu isekethe evivinywayo.
Ukuhlolwa okuyisisekelo kuma-amplifiers alalelwayo: yini okufanele ukukalwa
Uma ufuna ukudlulela ngale kokuthi "kuzwakala kukuhle," kufanele ucabangele ibhethri elijwayelekile lokuhlolwa elizokunikeza ukuqonda kobuchwepheshe ngokusebenza kwe-amplifier. Ezweni lobuchwepheshe, amapharamitha amaningi ayalinganiswa, kodwa ngemishini yasekhaya, ungagxila kokumbalwa okunikeza ulwazi oluningi ngaphandle kokwenza izinto zibe nzima kakhulu.
Phakathi kokuhlolwa okuwusizo kakhulu sithola ukulinganiswa kwe -input impedance (ukwazi ukuthi umthombo wesignali ubona umthwalo onjani), i-output impedance (ukuqonda ukuthi isikhulumi silawula kanjani kanye ne-damping factor), i-impedance phakathi kwezigaba (okuthakazelisa kakhulu kuma-tube amplifiers anezigaba eziningana zokuzuza), kanye nezinhlobo ezahlukene zokuphambuka kwe-harmonic, kokubili okunempendulo engemihle exhunyiwe futhi ngaphandle kwayo.
Kuyisibonelo esihle kakhulu futhi ukutadisha ukugcwala kwe-amplifier nge-sine wave : kuze kube yilapho isignali ihlala ihlanzekile khona nokuthi i-amplifier iqala ukunqamula kusukela kuphi. I-oscilloscope ikhombisa ngokusobala ukuguquka kusuka ku-sine wave "eyindilinga" kuya kusignali eneziqongo ezisicaba, ezilinganayo noma ezingalingani kuye ngomklamo wesekethe.
Ngaphezu kwalezi zivivinyo ezigxile ekuqondeni okuqondile, kufanelekile ukuthatha isikhathi ukukala umsindo, umsindo we-mains hum, ukuphazamiseka kwemvamisa yomsakazo, nanoma yikuphi ukushukuma okungaphandle kwebhendi. Ama-amplifier amaningi abonakala ethule empeleni ayashukuma kububanzi be-ultrasonic, okungafudumeza izingxenye, kubangele ukungasebenzi kahle, noma kuphazamise eminye imishini, noma ngabe ayibonakali endlebeni.
Okokugcina, ukuhlaziywa kwempendulo yemvamisa kanye ne-spectrum kungenziwa , kuhlolwe ukuthi i-gain iyahlukahluka kanjani kuma-bass, midrange, kanye nama-treble frequency, lapho izinga liqala ukwehla khona, ukuthi ngabe kukhona yini ama-resonances angafuneki, njll. Kuma-tube amplifiers ane-transformer yokukhipha, isibonelo, lezi zivivinyo zisiza ukubona ukuthi i-transformer ikhawulela kangakanani amazinga aphezulu ebhendi.
Ukusetshenziswa kwe-oscilloscope ekusethweni kwe-RF: i-DC blocker, i-terminator kanye ne-attenuator
Uma i-amplifier esisebenza ngayo ingeyona nje i-amplifier yomsindo, kodwa i -amplifier ye-RF esebenza cishe ku-1 MHz noma ngaphezulu, kuvela ezinye izinto ezengeziwe mayelana nokufanisa i-impedance kanye nokuvikelwa kwemishini yokulinganisa. Kulezi zimo, kuvamile kakhulu ukuthola amasethingi afaka phakathi ama-DC blockers nama-terminator angu-50 Ω ekuphumeni.
I-DC blocker ifakiwe ukuze isuse noma iyiphi ingxenye ye-DC engase ivele ku-amplifier futhi ingalimaza kokubili umthwalo kanye nemishini engezansi komfula. Empeleni iyi-capacitor enobukhulu obufanele ukusebenza kubhendi yemvamisa oyifunayo ngaphandle kokuletha ukwehla kwesignali okubonakalayo.
Okulandelayo, i-RF terminator ivame ukuxhunywa, ngokuvamile i -resistor engu-50 Ω esebenza njengomthwalo ohambisanayo . Lokhu kuvimbela ukubonakaliswa kwesignali emgqeni futhi kudala izimo zokusebenza ezizinzile ze-amplifier. Uma uhlelo lwenzelwe i-50 Ω, ukusebenzisa lolu hlobo lwe-terminator cishe kuyimpoqo.
Umbuzo ojwayelekile uwukuthi ingabe i-oscilloscope ingaxhunywa ngqo kulo mugqa we-RF noma uma kudingeka i-attenuator ethile. Impendulo incike ezingeni le-voltage kanye ne-output impedance ye-amplifier, kanye nomthamo wesiteshi se-oscilloscope. Ezimweni eziningi, i- probe engu-10:1 isivele isebenza njenge-attenuator futhi inciphisa umthelela kusekethe , kodwa ku-RF emsulwa futhi kuvamile kakhulu ukusebenzisa ama-attenuator alinganisiwe agcina i-50 Ω impedance match kulo lonke uchungechunge.
Uma sisebenzisa i-amplifier eshibhile ukuze sisebenze nemishini ebizayo , kubalulekile ukwazi i-voltage ephezulu kakhulu engalethwa yisiteji, uhlobo lomthwalo esiklanyelwe wona, kanye nemikhawulo ye-oscilloscope yethu. Ukusuka lapho, singanquma ukuthi i-probe encishisiwe yanele yini, ukuthi i-attenuator eqondile ye-10 dB noma i-20 dB iyadingeka yini, noma ukuthi kunenzuzo yini ukuhlukanisa ingxenye yesignali usebenzisa i-splitter noma i-directional coupler.
Ukulinganisa ama-amplifiers eshubhu: izivivinyo ezijwayelekile nokuthi ungawahumusha kanjani
Ama-amplifiers e-Tube anezinto ezikhethekile: ahlanganisa ubuciko, ukwakheka kwakudala, kanye nomthamo onempilo we-sonic subjectivity . Kodwa-ke, ngaphandle kokuzwakala kahle nje, kuyasiza kakhulu ukuwafaka ochungechungeni lwezivivinyo ezijwayelekile ukuze aqonde ukuthi akwenzani ngempela nokuthi anayo indawo yokuthuthukisa.
Esinye sezilinganiso zokuqala ezinconywayo yi- input impedance . Ukwazi ukumelana okubonwa umthombo wesiginali (i-preamp, i-DAC, i-pedal, njll.) kusiza ukugwema imithwalo ephansi kakhulu engacindezela isigaba esandulele, ishintshe impendulo yayo yemvamisa, noma ilethe ukuphazamiseka okwengeziwe. I-input impedance ephezulu ivame ukuba mnandi emthonjeni, yize ingenza futhi isekethe izwele kakhulu emsindweni nasezintanjeni ezinde.
Ukuphazamiseka kokukhipha kubaluleke ngokulinganayo, njengoba kunquma izinga i-amplifier elawula ngalo ukunyakaza kwesipikha. Kuma-amplifiers e-tube, i-transformer yokukhipha idlala indima ebalulekile, futhi ukwakheka kwayo kuthonya kokubili i-damping factor kanye nokwandiswa kwama-bass nama-treble frequency. Ngokulinganisa ukuthi umphumela uziphatha kanjani ngaphansi kwemithwalo ehlukene, singathola umbono womdlalo wangempela phakathi kwe-amplifier nezipikha.
Kuyathakazelisa futhi ukuhlaziya ama -impedances phakathi kwezigaba ngaphakathi kwe-amplifier uqobo , ikakhulukazi emiklamo enama-gain tubes amaningi nabalandeli be-cathode. Ukuqhathaniswa kwe-impedances okungekuhle phakathi kwezigaba kungabangela ukwehla kwezinga, ukunqunywa kwebhendi ephezulu, noma ngisho nokungazinzi, kuyilapho ubukhulu obufanele buqinisekisa ukudluliselwa kwesignali okuhlanzekile nokubikezelwayo.
Esinye isici esibalulekile ukutadisha ukuhlanekezelwa kwe-harmonic okuphelele (i-THD) ngempendulo engemihle kanye nangaphandle kwayo . Impendulo inciphisa kakhulu ukuhlanekezelwa futhi ivame ukunciphisa impendulo yemvamisa, kodwa futhi ishintsha ukusatshalaliswa kwe-harmonic (okulinganayo, okungajwayelekile, okuphezulu, njll.). Ngokulinganisa ngegagasi elimsulwa le-sine kanye nokubuka i-spectrum, singabona ukuthi yimaphi ama-harmonics avelele nokuthi izinga lawo lishintsha kanjani lapho i-feedback loop ixhunyiwe noma inqanyuliwe.
Okokugcina, ukuhlolwa kokugcwala kanye nokusika ngezibonakaliso ze-sinusoidal kusibonisa ukuthi i-amplifier iziphatha kanjani njengoba isondela emkhawulweni wayo. Ukuphakama kwesignali yokufaka kuyanda kancane kancane kuze kube yilapho kuvela iziqongo ezisicaba ku-oscilloscope. Uhlobo lokusika (oluthambile, oluqinile, olulinganayo, olungalingani) lwembula okuningi ngesimo sedivayisi futhi lusiza ukuchaza ukuthi kungani ama-amplifier athile "ephuka" kamnandi kunamanye lapho ecindezelwa.
Impendulo evamile kanye nokusetshenziswa kwesofthiwe yamahhala
Enye yezivivinyo ezivuza kakhulu, ngisho nangemishini eyisisekelo, ukukala impendulo yemvamisa ye-amplifier . Umgomo ukuqonda ukuthi inzuzo ihlukahluka kanjani kulo lonke uhla lomsindo (isibonelo, kusukela ku-20 Hz kuya ku-20 kHz) bese uthola ukuhla, ukuphakama, noma ukungahleleki okube sekuhumusha kube umsindo omnyama, okhanyayo, noma "okhushuliwe".
Ukuze wenze lokhu kuhlola, ungasebenzisa i-function generator eyenza i-frequency sweep, kodwa abantu abaningi basebenzisa isofthiwe yamahhala edala umsindo we-sweep noma we-pink/white ovela kukhompyutha bese iwuthumela ngekhadi lomsindo. Enye indlela ukudlala amafayela e-WAV enziwe ngaphambilini ngama-sweep noma imisindo yokuhlola bese uthatha umphumela we-amplifier ukuze uhlaziywe.
Ukulinganisa kungathathwa ngqo nge-oscilloscope ekuphumeni kwe-amplifier, kuqashelwe ubukhulu besignali kumaza ahlukene bese kwakhiwe ijika. Kodwa-ke, kulula kakhulu ukusebenzisa ikhadi lomsindo ngokwalo njengethuluzi lokulinganisa , ukuxhuma okuphumayo kwe-amplifier kokufakwayo komugqa wayo (njalo ngama-attenuator afanele kanye nokuvikelwa) nokuvumela isofthiwe ukuthi idwebe ubukhulu kanye namagrafu esigaba alinganayo.
Kunezinhlelo eziningi zamahhala ezenzelwe ukulinganisa imishini yomsindo: zikuvumela ukuthi ubuke ijika lokuphendula imvamisa, uhlaziye i-spectrum yomsindo, ubale i-THD, nokuningi. Uma zihlanganiswe nokunakekelwa okuncane ukugwema ukulayisha ngokweqile okokufaka kwe-PC, zingaguqula ikhompyutha evamile ibe yi- analyzer yomsindo engabizi kakhulu . Kubalulekile ukukhumbula ukuthi ikhadi lomsindo nalo linemikhawulo yalo, kodwa ezinhlelweni eziningi ze-DIY, lanele kakhulu.
Lezi zinhlobo zokuhlolwa zingabona kalula ukwehla kwe-bass okubangelwa yi-transformer yokukhipha , ukulahlekelwa kwe-treble okuqhubekayo ngenxa ye-parasitic capacitances, ama-resonances angafuneki kuma-band athile, ngisho nomthelela wempendulo ekuthambekeni kwempendulo yemvamisa. Ukusuka lapho, kungenziwa izinguquko kusekethe, izintambo, noma ukukhethwa kwezingxenye ukuze kulungiswe ukusebenza.
Ama-Harmonic, ama-FFT, kanye nobudlelwano bawo nalokho esikuzwayo ngempela
Olunye uhlu lokuhlola olunamandla kakhulu lujikeleza ama-harmonics kanye nokuqukethwe kwe-spectral kwesignali . Ngokuvamile, lokhu kuhilela ukusebenzisa i-sine wave emsulwa kakhulu ekufakweni kwe-amplifier nokuhlaziya umphumela nge-FFT, kungaba ngokusebenzisa i-oscilloscope ngokwayo (uma ifaka lo msebenzi) noma isofthiwe esebenzisa ikhadi lomsindo njenge-front-end yokubamba.
Esizindeni semvamisa, umgomo ukuthola ukuthi yimaphi ama-harmonics avela ngaphezu kwamazinga ayisisekelo kanye namazinga awo ahlobene. Sinesithakazelo sokuhlukanisa phakathi kwama -harmonics alinganayo nangavamile , avame ukubonwa ngendlela ehlukile ngendlebe, kanye naphakathi kokuhlanekezela okuphansi (okuvame ukuba mnandi noma "okunomculo") kanye nokuhlanekezela okuphakeme, okunolaka kakhulu futhi okukhathazayo.
Yilapho kuvela khona isici esimangalisayo: okubukeka kubi esikrinini akuhlali kufana nalokho esikubona kubi lapho silalele . Isibonelo, i-amplifier encane kakhulu ye-Class D ingabonisa isimo se-wave esibi kakhulu ku-oscilloscope, enezinsalela zemvamisa yokushintsha, umsindo wemvamisa ephezulu, kanye nokungahambi kahle okuncane. Kodwa-ke, uma empeleni ivivinywa ngokulalela umculo ngezipikha, umsindo ungase wamukeleke ngokuphelele ebangeni lentengo.
Lokhu kungenxa yokuthi indlebe yomuntu ihlunga okuningi kwalokhu kungasebenzi kahle, ikakhulukazi uma kungaphandle kwebanga lokuzwakala noma kumazinga aphansi kakhulu. Ngaphezu kwalokho, izikhulumi kanye nezihlungi zokukhipha ze-amplifier zinciphisa umsindo omningi wokushintsha. Ngakho-ke, ikakhulukazi ngama -amplifier angabizi noma amaphrojekthi alula e-DIY , kungcono ukungagxili kakhulu kuzo zonke iziqongo ezincane ze-FFT uma umphumela osebenzayo uhlangabezana nezidingo zethu.
Emishinini esezingeni eliphezulu, vele, indaba iyashintsha: i-waveform kulindeleke ukuthi ibe yisibonelo, okuqukethwe kwe-harmonic kulawulwa ngokuqinile, kanye namazinga e-THD aphansi kakhulu. Kodwa ngisho nakulowo mongo, ukuqonda ukuthi hlobo luni lokuphambuka olukhiqizwayo kusiza ukuchaza ukuthi kungani ama-amplifier athile, anezincazelo ezifanayo kakhulu, ezwakala ehlukile uma siwalalela ngempela.
Umsindo, ukuduma, imvamisa yomsakazo, kanye nokunyakaza okunganakwa
Ngale kokuphazamiseka kwe-harmonic, i-oscilloscope iyithuluzi elihle kakhulu lokulandelela imisindo kanye nokunyakaza okuvame ukuphambaniswa nomsindo "ojwayelekile" noma okungabonakali kahle kodwa okukhona, okushisa izingxenye noma okuphazamisa amanye amadivayisi. Eziningi zalezi zinkinga zihlobene nokunikezwa kukagesi, ukumiswa kwesisekelo, kanye nokufakwa kwezintambo kwangaphakathi.
Phakathi kwezehlakalo ezivame kakhulu sithola umsindo wangemuva oshisayo nomsindo ovela ezingxenyeni ezisebenzayo ngokwazo , ovela esikrinini njengohlobo lwenkungu engahleliwe; i-hum yakudala engu-50/60 Hz kanye nama-harmonics ayo, okubangelwa imithombo engahlungiwe kahle noma izihibe zomhlabathi; ukuphazamiseka kwemvamisa yomsakazo okuhlanganiswe emoyeni noma izintambo ezingavikelwe kahle; kanye nokunyakaza kwemvamisa ephezulu okukhiqizwa yimpendulo engakhokhelwa kahle noma imiklamo ye-PCB enganaki.
Kulolu hlobo lokuhlola, okokufaka kwe-amplifier kuvame ukufinyezwa (kuya phansi) , okuphumayo kuxhunywe kumthwalo ofanele, futhi i-oscilloscope isetshenziselwa ukubona okuphumayo ngezikali zesikhathi ezahlukene kanye nokuzwela. Ukushintsha isisekelo sesikhathi kwembula kokubili i-hum yemvamisa ephansi kanye nokushukuma okungenzeka ebangeni le-kHz noma ngisho ne-MHz, okungase kungabonakali endlebeni.
Lezi zinkinga zivame kakhulu kuma-tube amplifiers, njengoba zifaka phakathi ama-voltage aphezulu, ama-transformer amakhulu, izintambo ze-point-to-point, kanye nezindawo ezisatshalaliswayo, uma zingaklanywanga ngokucophelela, zakha indawo yokuzalela i -hum, i-coupling, kanye ne-RF pickup . I-oscilloscope isiza ukukhomba ukuthi inkinga ikuphi ku-circuit nokuthi yiziphi izinguquko (ukuhlela kabusha izindawo, ukusonta izintambo, ukuthuthukisa ukuvikela, njll.) empeleni ezenza umehluko.
Uma i-oscilloscope ihlanganiswe nesofthiwe yokuhlaziya i-spectrum, kuvela isithombe esicacile samaza lapho umsindo ugxile khona. Lokhu kusenza sikwazi ukuhlukanisa ukuthi umthombo uyigridi yamandla (50/60 Hz kanye nama-multiples), ama-semiconductors ngokwawo, i-transformer yokukhipha, ukwakheka kwebhodi okungekuhle, noma ukuphazamiseka kwangaphandle okuvela kuma-radio, ama-router, amafoni angenazintambo, njll. Ngale ndlela, ukuthuthuka akusenziwa "ngokungaboni," futhi siqala ukusebenza ngezivivinyo eziqondile eziqinisekisa ukuthi ukuguqulwa kube yimpumelelo noma cha.
Ekugcineni, nge-oscilloscope eyisisekelo, isofthiwe ethile yamahhala, imithwalo embalwa yokuhlola, kanye nokuzimisela ukuzama, ungasungula i -mini-lab yasekhaya enekhono elimangalisayo . Kungakhathaliseki ukuthi umgomo uwukucindezela imoduli ye-Class D eshibhile noma ukulungisa iphrojekthi yepayipi enamandla aphezulu, amasu afanayo okulinganisa, uma eqondwa kahle, akuvumela ukuthi uvumelanise izinombolo namagrafu nalokho okushiwo yizindlebe zakho. Uzofunda endleleni ukuthi kungani i-amplifier eshibhile ebukeka kabi esikrinini isebenza kahle kakhulu egumbini lokuphumula, kuyilapho i-amplifier eklanywe ngokucophelela iveza kumagrafu ukuthi kungani izwakala ihlanzekile futhi ilawulwa kangaka.