Moni!
Ndikuwonjezera nkhani yaifupi pamutu wakusankha oscilloscope yapanyumba yolumikizirana ndi ntchito ndi zokonda.
Chifukwa chiyani tikambirana za thumba ndi zazing'ono - chifukwa izi ndizomwe mungasankhe pa bajeti. Ma oscilloscope apakompyuta ndi ochulukirapo, zida zogwirira ntchito, ndipo, monga lamulo, zitsanzo zodula ($ 200-400 kapena kupitilira apo) zokhala ndi ma tchanelo anayi okhala ndi ntchito zambiri.
Koma mitundu yophatikizika yokhala ndi tchanelo chimodzi choyezera mosavuta ndikuwunika mawonekedwe azizindikiro zitha kugulidwa ndi $1...$20.
Chifukwa chake, mawonekedwe akuluakulu aukadaulo a thumba la oscilloscopes ndi bandwidth yogwira ntchito, yomwe imayesedwa mu MHz, komanso mafupipafupi a sampuli, omwe amakhudza mwachindunji miyeso.
M'nkhaniyi ndiyesera kufotokoza ma oscilloscopes omwe ine ndekha ndimakhala nawo ndikupereka ubwino ndi kuipa kwa zitsanzozi.
Njira yoyamba yomwe amateurs ambiri amadutsamo ndi oscilloscope yotengera ATmega microcontroller; Ali ali ndi zosankha zambiri, kuphatikiza kudziphatikiza, mwachitsanzo, DSO138. Kukula kwake kutengera STM32 microcontroller kumatchedwa DSO150.
- Ichi ndi oscilloscope yabwino kwa olowa-level amateur wailesi. Chidacho chimaphatikizapo kafukufuku wa P6020. Oscilloscope palokha imakhala ndi bandwidth pafupifupi 200 kHz. Zomangidwa pamaziko a STM32, ADC mpaka zitsanzo za 1M. Njira yabwino yoyesera magetsi osavuta (PWM) ndi njira zomvera. Oyenera oyamba kumene, mwachitsanzo, pophunzira ma siginecha amawu (kukhazikitsa amplifier, etc.). Pakati pazovuta, ndikuwona kulephera kusunga chithunzi cha oscillogram, komanso bandwidth yaying'ono.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 1 MSa/s
- Bandwidth ya Analogi: 0 - 200 kHz
- Kumverera kosiyanasiyana: 5 - 20 mV / div
- Mphamvu yolowera kwambiri: 50V max. (1x kufufuza)
- Nthawi yosesa: 500s/div - 10 Β΅s/div
Ngati mungafune, mutha kupeza mtundu wosatsika mtengo womwe unsoldered. Oyenera kuphunzira soldering "ndi tanthauzo".
Koma chizolowezicho chinadutsa mwachangu ndipo adasamukira kumitundu yayikulu.
Kumayambiriro kwa 2018, ndidapeza imodzi mwazosankha zodziwika bwino zama oscilloscopes olowera - osavuta, koma osati oyipa.
DSO188 oscilloscope ndi "mita yowonetsera" yosavuta yokhala ndi njira imodzi, yopanda kukumbukira, koma yokhala ndi maonekedwe amtundu, batire ya 300mAh ndi kukula kochepa kwambiri. Ubwino wake ndi kuphatikizika kwake komanso kusuntha, ndipo gulu la frequency ndilokwanira pazogwiritsa ntchito zambiri (mwachitsanzo, kukhazikitsa zida zomvera).
Pamtengo wotsika ($ 30), imawonetsa zizindikiro pa 1 MHz (5MSA/s sampling). Ma probe a MMCX amagwiritsidwa ntchito pogwira ntchito, koma zidazo zimaphatikizapo adaputala ya MMCX-BNC. 5MSPS ADC yosiyana imayikidwa, bandwidth mpaka 1 MHz, mlanduwu umasonkhanitsidwa kuchokera ku mapanelo, omwe amawoneka bwino kwambiri. Kumbali yabwino, ndimawona kukula kophatikizika ndi bandwidth yabwino, poyerekeza ndi DSO150 (1 MHz), komanso kukula kwake. Zosavuta kugwiritsa ntchito limodzi ndi tester wamba. Imalowa mosavuta m'thumba lanu. Mwa minuses, mlanduwu uli ndi mapangidwe otseguka omwe samatetezedwa kuzinthu zakunja (zofunikira kusinthidwa), komanso kulephera kusamutsa zithunzi zosungidwa ku kompyuta. Kukhalapo kwa cholumikizira cha MMCX ndikosavuta, koma kuti mugwire ntchito yonse mudzafunika adaputala ya BNC kapena ma probe apadera. Kwa ndalama, iyi ndi njira yabwino kwambiri yolowera.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 5 MSa/s
- Bandwidth ya Analogi: 0 - 1 MHz
- Sensitivity osiyanasiyana: 50 mV/div ~ 200 V/div
- Magetsi olowera kwambiri: 40 V (1X probe), 400 V (10X probe). Palibe cholumikizira chizindikiro chomangidwira.
- Nthawi yosesa: 100mS/div ~ 2uS/div
Ngati megahertz imodzi ndiyosakwanira, mutha kuyang'ana m'thumba la oscilloscopes m'nyumba yokhala ndi cholumikizira cha BNC, mwachitsanzo, thumba lotsika mtengo la oscilloscope DSO FNISKI PRO.
Iyi ndi njira yabwino kwambiri kwa ndalama zanu. Band 5 MHz (sine). Ndizotheka kusunga ma graph ku kukumbukira kwamkati kwa chipangizocho.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 20 MSa/s
- Bandwidth ya Analogi: 0 - 5 MHz
- Sensitivity osiyanasiyana: 50 mV/div ~ 200 V/div
- Magetsi olowera kwambiri: 40 V (1X probe), 400 V (10X probe). Palibe cholumikizira chizindikiro chomangidwira.
- Nthawi yosesa: 50S/div ~ 250nS/div
(ndi bandwidth mpaka 10 MHz).
Ndikadasankha njira yoyamba (ndi ng'ona) ndikugula ma probe owonjezera padera. Ulalo wama probe uli pansipa.
Kutengera ndi zotsatira zakugwiritsa ntchito, ndikufuna kudziwa vuto lomasuka komanso chiwonetsero chachikulu. Chizindikiro choyesera pa 5 MHz (sine) chimasonyeza popanda vuto, zizindikiro zina za nthawi ndi nthawi zimawonekera mpaka 1 MHz.
Ngati bandwidth yomwe ili pamwamba pa 1 MHz siili yovuta ndipo simukusowa kugwira ntchito ndi magetsi apamwamba, ndiye kuti DSO FNIRSI PRO yokhala ndi cholumikizira cha BNC ndi chisankho chabwino. Amagwiritsa ntchito ma probes okhazikika ndipo angagwiritsidwe ntchito ngati kafukufuku wofulumira wa thumba la oscilloscope - poke ndikuwona ngati kusinthanitsa, microcircuit, ndi zina zambiri. Kenako pondani kumbuyo kwa oscilloscope yayikulu, kapena kunyamula wodwalayo patebulo ndikutsegula.
Koma ngati mukufuna bandwidth pang'ono, tcherani khutu ku zotsika mtengo
DSO168 oscilloscope ili ndi mawonekedwe achilendo omwe amafanana ndi osewera otchuka a MP3. Izi ndi kuphatikiza (thupi lachitsulo chowoneka bwino) komanso kuchotsera kwa chipangizocho. Osati chisankho chabwino kwambiri cholumikizira - MiniUSB pakulipiritsa batire. Ndiwonanso kulumikizana kudzera pa jack 3.5 mm - choyipa chachikulu chamtunduwu.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 50 MSa/s
- Bandwidth ya Analogi: 0 - 20 MHz
- Sensitivity osiyanasiyana: 50 mV/div ~ 200 V/div
- Magetsi olowera kwambiri: 40 V (1X probe)
- Nthawi yosesa: 100S/div ~ 100nS/div
DSO168 ndi chida chosangalatsa pamtengo wake.
Zabwino kwambiri kuposa kuchuluka kwa DSO138 yofananira, yomwe idamangidwa pamaziko a ma microcontrollers okhala ndi ADC yomangidwa (200kHz).
Mtundu uwu wa DSO168 uli ndi AD9283 ADC yosiyana, yomwe imapereka kusanthula kodalirika kwa zizindikiro mpaka 1 MHz. Kufikira 8 MHz, chipangizochi chitha kugwiritsidwa ntchito, koma ngati "chowonetsa" chazizindikiro, popanda miyeso yayikulu. Koma mpaka 1 MHz - palibe vuto.
Chidacho chimaphatikizapo kafukufuku wamba wa P6100 BNC, komanso adaputala kuchokera ku 3.5mm jack kupita ku BNC.
DSO168 oscilloscope ili ndi 20 MHz bandiwifi (ndi zitsanzo pafupipafupi 60MSA/s), osati bwino kwambiri, koma zambiri kapena zochepa mwaukhondo nkhani ala iPod, anamanga-800 mAh batire (akhoza mothandizidwa ndi USB). Kufanana ndi wosewera mpira kumawonjezedwa ndi ma probes kudzera pa jack 3,5 mm (pali adaputala ya BNC-3.5mm). Palibe kukumbukira kusunga ma waveform. Ndikufuna kuzindikira cholakwika cha kapangidwe kake - jack 3,5 mm sichinapangidwe kuti itumize ma siginecha a microwave; pali zosokoneza pamawonekedwe azizindikiro pamafuridwe apamwamba kuposa 1 MHz. Chifukwa chake chipangizocho ndi chosangalatsa, koma ndingasankhe njira ina.
Kenako, ndikupangira kuyang'ana mtundu wina wotsika mtengo wa DSO338 oscilloscope wokhala ndi bandwidth ya 30 MHz.
Ichi ndi oscilloscope yoyendetsedwa ndi batire ya m'thumba ya tchanelo chimodzi chokhala ndi mafupipafupi ofikira 200Msps. Makhalidwe si oipa, kwa ambiri chitsanzo ichi ndi chokwanira kwa maso. Pali njira imodzi, zowonetsera zimakhala ndi ma angles abwino, ndipo nthawi yogwiritsira ntchito imafika maola 8 pa mtengo umodzi mosalekeza.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 200 MSa/s
- Bandwidth ya Analogi: 0 - 30 MHz
- Sensitivity osiyanasiyana: 50 mV/div ~ 200 V/div
- Magetsi olowera kwambiri: 40 V (1X probe), 400 V (10X probe). Palibe cholumikizira chizindikiro chomangidwira.
- Nthawi yosesa: 100mS/div ~ 125nS/div
Kufufuza kokhazikika kwa P6100 BNC kumagwiritsidwa ntchito poyezera.
Oscilloscope imachita bwino pamafuridwe apamwamba kuposa 10-20 MHz.
Njira yabwino, koma chifukwa cha mtengo wake, mukhoza kuyang'ana zitsanzo zina.
Mwachitsanzo, mutha kugula zodula pang'ono
Chitsanzo chatsopano ndi chimodzi mwa zabwino kwambiri ndalama - njira imodzi 100 MHz oscilloscope ndi kukumbukira. Miyezo ya zitsanzo imafika 500 Msps.
Oscilloscope ndi imodzi mwa "zamphamvu" komanso "zotsogola" pamitengo yake. Pali njira imodzi ya BNC, koma oscilloscope imatha kuwonetsa chizindikiro cha sine wave mpaka 1MHz. Zizindikiro zina zanthawi ndi nthawi zimawoneka bwino mpaka 100-70 MHz.
Oscilloscope imabwera ndi kafukufuku wabwino wa P6100 wokhala ndi chogawa cha 10x ndi bandwidth mpaka 100 MHz, komanso mlandu wosungira ndi kunyamula.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 500 MSa/s
- Bandwidth ya Analogi: 0 - 100 MHz
- Sensitivity osiyanasiyana: 50 mV/div ~ 100 V/div
- Magetsi olowera kwambiri: 80 V (1X probe), 800 V (10X probe). Palibe cholumikizira chizindikiro chomangidwira.
- Nthawi yosesa: 50S/div ~ 6nS/div
Oscilloscope amalimbana ndi zizindikiro zosaipa kuposa mchimwene wake wamkulu Rigol.
Ndiwona kusowa kwa kulumikizana ndi kompyuta (mwa zina izi sizongochepetsa, popeza palibe chifukwa chodzipatula pagalasi), komanso kupezeka kwa njira imodzi yokha yoyezera.
DSO Fniski 100MHz ndi chisankho chabwino, makamaka ngati palibe chipangizo choyenera komanso nkhani yamtengo wapatali. Ngati n'kotheka kuwonjezera, ndi bwino kuwonjezera ndi kutenga chinachake pa njira ziwiri komanso ndi kuthekera kosunga zotsatira.
Kugunda kwa 2019 ndi oscilloscope yosunthika yokhala ndi ma frequency a 40 MHz (pali mtundu wa 2C72 mpaka 70 MHz) wokhala ndi mayendedwe awiri ndi jenereta pafupipafupi. Multimeter yomangidwa. Amabwera ndi chikwama chonyamulira. Mtengo kuchokera $99.
Chidacho chimaphatikizapo chilichonse chomwe mungafune + chonyamulira. Zitsanzo zofikira ku 250MSa/s ndizotsatira zabwino kwambiri zama oscilloscopes onyamula. Pali mitundu 2Π‘42/2Π‘72 yopanda jenereta yomangidwa, koma sizosangalatsa kwambiri pamitengo ndi magwiridwe antchito.
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 250 MSa/s
- Bandwidth ya Analogi: 0 - 40 MHz
- Sensitivity osiyanasiyana: 10 mV/div ~ 10 V/div
- Magetsi olowera kwambiri: 60 V (1X probe), 600 V (10X probe).
- Nthawi yosesa: 500S/div ~ 5nS/div
Oscilloscope ndi okwera mtengo kwambiri kuposa zam'mbuyomo, koma chitsanzo cha 2Dx2 chili ndi jenereta yafupipafupi. Chithunzi chomwe chili pansipa chikuwonetsa m'badwo wa 1 MHz sine wave.
Kupanda kutero, Hantek siwoyipa kuposa abale ake akulu. Ndidzawona kukhalapo kwa multimeter yomangidwa, yomwe imapangitsa chitsanzo ichi kukhala chipangizo cha 3-in-1.
Ma oscilloscopes omwe ndili nawo atha, koma ndikuwonetsa chitsanzo china chomwe chili ndi ufulu wokhala ndi moyo. Pamtengo wamtengo wapataliwu pali omasuka komanso apamwamba .
Mafotokozedwe:
- Nthawi yeniyeni ya zitsanzo: 200 MSa/s
- Bandwidth ya Analogi: 0 - 30 MHz
- Sensitivity osiyanasiyana: 10 mV/div ~ 10 V/div
- Magetsi olowera kwambiri: 60 V (1X probe), 600 V (10X probe).
- Nthawi yosesa: 500S/div ~ 5nS/div
Ndikupangira kulabadira zida zothandiza za oscilloscope:
Zipangizo zam'manja monga izi ndizomwe ndimagwiritsa ntchito pafupipafupi. Zothandiza kwambiri, makamaka pakukhazikitsa zida zosiyanasiyana, kuyang'ana, kutumiza. Nditha kulangiza kutenga mtundu wa DSO150, kapena kupitilira apo, DSO138 (200kHz) yofananira mu mtundu wa DIY pophunzira kugulitsa ndi zoyambira zamagetsi zamagetsi. Mwa mitundu yogwira ntchito, ndikufuna kuwona DSO Fniski 100MHz ngati oscilloscope yokhala ndi mtengo wabwino kwambiri / bandwidth yogwira ntchito, komanso Hantek 2D72 ngati yogwira ntchito kwambiri (3-in-1).
Source: www.habr.com