Nibuliso!
Ndiyongeza inqaku elifutshane kwisihloko sokukhetha i-oscilloscope ye-compact yasekhaya ye-entry-level yomsebenzi kunye nezinto ezithandwayo.
Kutheni siza kuthetha ngepokotho kunye ne-compact - kuba ezi zikhetho ezininzi zebhajethi. Ii-oscilloscopes zeDesktop zininzi kakhulu, izixhobo ezisebenzayo, kwaye, njengomthetho, iimodeli ezibiza kakhulu (i-200-400 yeedola okanye ngaphezulu) ezinetshaneli ezi-4 ezinemisebenzi emininzi.
Kodwa iimodeli ezidibeneyo kunye ne-channel ye-1 yemilinganiselo elula kunye novavanyo lwemilo yomqondiso zingathengwa ngokoqobo $ 20 ... $ 40.
Ngoko ke, iimpawu eziphambili zobugcisa be-pocket oscilloscopes yi-bandwidth yokusebenza, elinganiswa kwi-MHz, kunye ne-frequency yesampuli, echaphazela ngokuthe ngqo umgangatho wemilinganiselo.
Kweli nqaku ndiza kuzama ukuchaza ii-oscilloscopes endinazo ngokwam kwaye ndinike izinto ezilungileyo kunye nezibi kwezi modeli.
Inketho yokuqala ukuba abaninzi abathandi berediyo baye badlula kuyo i-oscilloscope esekelwe kwi-microcontroller ye-ATmega, u-Ali unokhetho oluninzi, kubandakanywa nokuzihlanganisa, umzekelo, i-DSO138. Uphuhliso lwayo olusekelwe kwi-STM32 microcontroller ibizwa ngokuba yi-DSO150.
- Le yi-oscilloscope elungileyo yenqanaba lokungena likanomathotholo. Ikhithi ibandakanya i-P6020 probe. I-oscilloscope ngokwayo ine-bandwidth malunga ne-200 kHz. Yakhelwe kwisiseko se-STM32, i-ADC ukuya kuthi ga kwiisampuli ze-1M. Inketho elungileyo yokuvavanya izixhobo zamandla ezilula (PWM) kunye neendlela zomsindo. Ifanelekile kubaqalayo, umzekelo, ukufunda iimpawu zesandi (ukusetha i-amplifier, njl.). Phakathi kwezinto ezingalunganga, ndiphawula ukungakwazi ukugcina umfanekiso we-oscillogram, kunye ne-bandwidth encinci.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 1 MSa/s
- Ububanzi be-Analog: 0 - 200 kHz
- Uluhlu lobuthathaka: 5 - 20 mV/div
- Ubuninzi begalelo lombane: 50V max. (1x probe)
- Uluhlu lwexesha lokutshayela: 500s/div – 10 µs/div
Ukuba uyanqwenela, ungafumana inguqulelo engabizi mali ifikelelekayo. Ifanelekile ukufunda i-soldering "enentsingiselo".
Kodwa umdlalo wokuzilibazisa wadlula ngokukhawuleza kwaye wadlulela kwiimodeli ezinzulu.
Ekuqaleni kuka-2018, ndiye ndafumana enye yeendlela ezidumileyo zokungena kwinqanaba le-oscilloscopes-ilula, kodwa ayimbi.
I-oscilloscope ye-DSO188 "imitha yokubonisa" elula kunye neshaneli enye, akukho memori, kodwa kunye nomboniso wombala, ibhetri ye-300mAh kunye nobukhulu obuncinci kakhulu. Inzuzo yayo kukubumbana kwayo kunye nokuphatheka, kwaye ibhendi yefrikhwensi yanele kwizicelo ezininzi (umzekelo, ukuseta izixhobo zomsindo).
Ngexabiso eliphantsi (i-$ 30), ibonisa iimpawu kwi-1 MHz (i-5MSA / s isampuli). Iiprobe ze-MMCX zisetyenziselwa ukusebenza, kodwa ikhithi ibandakanya iadaptha ye-MMCX-BNC. I-5MSPS ADC eyahlukileyo ifakwe, i-bandwidth ifikelela kwi-1 MHz, ityala lihlanganiswe kwiipaneli, ezibonakala zihle kakhulu. Kwicala elihlangeneyo, ndiqaphela ubungakanani be-compact kunye ne-bandwidth ehloniphekileyo, xa kuthelekiswa ne-DSO150 (1 MHz), kunye nobukhulu be-compact. Ilungele kakhulu ukusebenzisa kunye nomvavanyi oqhelekileyo. Ingena lula epokothweni yakho. Kwiminus, ityala linoyilo oluvulekileyo olungakhuselwanga kwiimpembelelo zangaphandle (udinga ukuguqulwa), kunye nokungakwazi ukudlulisa imifanekiso egciniweyo kwikhompyutheni. Ubukho bomdibaniso we-MMCX bukulungele, kodwa ukuze usebenze ngokupheleleyo uya kufuna i-adapter ye-BNC okanye i-probes ekhethekileyo. Ngemali, olu lukhetho oluhle kakhulu lwenqanaba lokungena.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 5 MSa/s
- Ububanzi be-Analog: 0 - 1 MHz
- Uluhlu lobuthathaka: 50 mV/div ~ 200 V/div
- Ubuninzi begalelo lombane: 40 V (1X probe), 400 V (10X probe). Akukho sithinteli somqondiso esakhelweyo.
- Ixesha lokutshayela uluhlu: 100mS/div ~ 2uS/div
Ukuba i-megahertz enye ayonelanga, unokujonga ngakwipokotho ye-oscilloscopes kwindlu enekhonkco le-BNC, umzekelo, ipokotho engabizi kakhulu i-oscilloscope DSO FNISKI PRO.
Olu lukhetho oluhle kakhulu lwemali yakho. Ibhendi 5 MHz (sine). Kuyenzeka ukugcina iigrafu kwimemori yangaphakathi yesixhobo.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 20 MSa/s
- Ububanzi be-Analog: 0 - 5 MHz
- Uluhlu lobuthathaka: 50 mV/div ~ 200 V/div
- Ubuninzi begalelo lombane: 40 V (1X probe), 400 V (10X probe). Akukho sithinteli somqondiso esakhelweyo.
- Ixesha lokutshayela uluhlu: 50S/div ~ 250nS/div
(nge-bandwidth ukuya kuthi ga kwi-10 MHz).
Ndingathatha ukhetho lokuqala (kunye neengwenya) kwaye ndithenge iiprobes ezongezelelweyo ngokwahlukeneyo. Ikhonkco kwi-probes ingezantsi.
Ngokusekwe kwiziphumo zokusetyenziswa, ndingathanda ukuqaphela imeko ekhululekile kunye nomboniso omkhulu. Isignali yovavanyo kwi-5 MHz (sine) ibonisa ngaphandle kweengxaki, ezinye iimpawu zexesha kunye ne-aperiodic zidla ngokubonisa ukuya kwi-1 MHz.
Ukuba i-bandwidth engaphezulu kwe-1 MHz ayibalulekanga kwaye akudingeki ukuba usebenze ngee-voltages eziphezulu, ngoko i-DSO FNIRSI PRO kunye ne-BNC connector lukhetho oluhle. Isebenzisa iiprobes eziqhelekileyo kwaye ingasetyenziswa njengepokotho ekhawulezayo ye-oscilloscope probe - gxuma kwaye ubone ukuba utshintshiselwano, i-microcircuit, njl njl. Kwaye emva koko unyathele ngasemva kwe-oscilloscope enkulu, okanye uthwale isigulana usibeke etafileni kwaye usivule.
Kodwa ukuba ufuna i-bandwidth encinci, nikela ingqalelo kwizinto ezingabizi
I-oscilloscope ye-DSO168 inoyilo olungaqhelekanga olufana nabadlali beMP3 abaziwayo. Oku kokubini kukudibanisa (umzimba wentsimbi enesitayile) kunye nokuthabatha isixhobo. Ayilolona khetho lulungileyo lokudibanisa-iMiniUSB yokutshaja ibhetri. Ndiza kuqaphela uxhulumaniso nge-3.5 mm jack - eyona nto iphosakeleyo yalo mzekelo.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 50 MSa/s
- Ububanzi be-Analog: 0 - 20 MHz
- Uluhlu lobuthathaka: 50 mV/div ~ 200 V/div
- Elona galelo lombane liphezulu: 40 V (1X probe)
- Ixesha lokutshayela uluhlu: 100S/div ~ 100nS/div
I-DSO168 sisixhobo esinomdla kwixabiso layo.
Ingcono kakhulu kunenani elikhulu le-DSO138 efanayo, eyakhiwe ngesiseko se-microcontrollers kunye ne-ADC eyakhelwe ngaphakathi (200kHz).
Lo mzekelo we-DSO168 une-AD9283 ADC eyahlukileyo, enika uhlalutyo oluthembekileyo lweempawu ukuya kwi-1 MHz. Ukuya kuthi ga kwi-8 MHz, esi sixhobo sinokusetyenziswa, kodwa njenge "displayer" yeempawu, ngaphandle kwemilinganiselo enzulu. Kodwa ukuya kuthi ga kwi-1 MHz - akukho ngxaki.
Ikiti ibandakanya i-probe ye-P6100 BNC eqhelekileyo, kunye ne-adapter esuka kwi-3.5mm jack ukuya kwi-BNC.
I-oscilloscope ye-DSO168 ine-bandwidth ye-20 MHz (kunye nomlinganiselo wesampulu ye-60MSA / s), kungekhona eyona nto iphumeleleyo, kodwa i-ala iPod ingaphezulu okanye icocekile, ibhetri eyakhelwe ngaphakathi 800 mah (inokuthi inikwe amandla kwi-USB). Ukufana nomdlali kongezwa nge-probes nge-3,5 mm jack (kukho i-adapter ye-BNC-3.5mm). Akukho nkumbulo yokugcina iifom zamaza. Ndingathanda ukuqaphela isiphene soyilo - i-jack ye-3,5 mm ayijoliswanga ukuhambisa iimpawu ze-microwave; Ke isixhobo sinomdla, kodwa ndingakhetha ukhetho olwahlukileyo.
Okulandelayo, ndicebisa ukujonga enye imodeli engabizi kakhulu ye-oscilloscope ye-DSO338 ene-bandwidth ye-30 MHz.
Le yi-oscilloscope esebenza ngebhetri epokothweni yetshaneli enye enesampulu yesampulu efikelela kuma-200Msps. Iimpawu azibi, kuba abaninzi le modeli yanele emehlweni. Kukho ishaneli enye, umboniso unama-angles amahle okubukela, kwaye ixesha lokusebenza lifikelela kwiiyure ze-8 kwintlawulo enye ngokuqhubekayo.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 200 MSa/s
- Ububanzi be-Analog: 0 - 30 MHz
- Uluhlu lobuthathaka: 50 mV/div ~ 200 V/div
- Ubuninzi begalelo lombane: 40 V (1X probe), 400 V (10X probe). Akukho sithinteli somqondiso esakhelweyo.
- Uluhlu lokutshayela ixesha: 100mS/div ~ 125nS/div
Uvavanyo oluqhelekileyo lwe-P6100 BNC lusetyenziselwa imilinganiselo.
I-oscilloscope iqhuba kakuhle kakhulu kwiifrikhwensi ezingaphezulu kwe-10-20 MHz.
Inketho efanelekileyo, kodwa inikwe iindleko zayo, unokujonga ezinye iimodeli.
Umzekelo, ungathenga indleko encinci
Imodeli entsha kunye neyona nto ingcono kakhulu yemali - i-oscilloscope eyodwa ye-100 MHz enememori. Amazinga esampula afikelela kwi-500 Msps.
I-oscilloscope yenye yezona "zinamandla" kwaye "zintsonkothile" kuluhlu lwamaxabiso. Kukho itshaneli ye-1 ye-BNC, kodwa i-oscilloscope inokubonisa uphawu lwe-sine wave ukuya kuthi ga kwi-100MHz. Ezinye iimpawu zexesha kunye ne-aperiodic zibukeka ziqhelekileyo ukuya kuthi ga kwi-70-80 MHz.
I-oscilloscope iza neprobe elungileyo ye-P6100 ene-10x isahluli kunye ne-bandwidth ukuya kwi-100 MHz, kunye necala lokugcina kunye nokuthwala.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 500 MSa/s
- Ububanzi be-Analog: 0 - 100 MHz
- Uluhlu lobuthathaka: 50 mV/div ~ 100 V/div
- Ubuninzi begalelo lombane: 80 V (1X probe), 800 V (10X probe). Akukho sithinteli somqondiso esakhelweyo.
- Ixesha lokutshayela uluhlu: 50S/div ~ 6nS/div
I-oscilloscope ihlangabezana neempawu ezimbi ngakumbi kunomntakwabo omdala uRigol.
Ndiya kuqaphela ukungabikho koxhulumaniso kunye nekhompyutheni (ngokuyinxenye oku akusiyo i-minus, kuba akukho mfuneko yokuhlukaniswa kwe-galvanic), kunye nobukho besiteshi esisodwa kuphela sokulinganisa.
I-DSO Fniski 100MHz lukhetho oluhle, ngakumbi ukuba akukho sixhobo sifanelekileyo kwaye umba weendleko unzima. Ukuba kunokwenzeka ukongeza, kungcono ukongeza kwaye uthathe into kwiziteshi ezimbini kunye nokukwazi ukugcina iziphumo.
I-hit ye-2019 yi-oscilloscope ephathekayo ene-frequency ye-40 MHz (kukho imodeli ye-2C72 ukuya kwi-70 MHz) kunye namajelo amabini kunye nejeneretha yefrikhwensi. I-multimeter eyakhelweyo. Iza nebhegi yokuthwala. Ixabiso ukusuka kwi-99 yeedola.
Ikhithi ibandakanya yonke into oyifunayo + ityesi yokuthwala. Iireyithi zesampulu ukuya kuthi ga kwi-250MSa/s zezona ziphumo zibalaseleyo kwii-oscilloscopes eziphathwayo. Kukho iinguqulelo ze-2С42 / 2С72 ngaphandle kwejeneretha eyakhelweyo, kodwa ayinomdla kakhulu ngokwexabiso kunye nokusebenza.
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 250 MSa/s
- Ububanzi be-Analog: 0 - 40 MHz
- Uluhlu lobuthathaka: 10 mV/div ~ 10 V/div
- Ubuninzi begalelo lombane: 60 V (1X probe), 600 V (10X probe).
- Ixesha lokutshayela uluhlu: 500S/div ~ 5nS/div
I-oscilloscope ixabisa kancinci kuneyangaphambili, kodwa imodeli ye-2Dx2 ixhotyiswe ngejeneretha yamaza. Ifoto engezantsi ibonisa isizukulwana se-1 MHz sine wave.
Ngaphandle koko, i-Hantek ayikho mbi kunabazalwana bayo abadala. Ndiya kuqaphela ubukho be-multimeter eyakhelweyo, eyenza le modeli ibe yi-3-in-1 isixhobo.
Iioscilloscopes endinazo ziphelile, kodwa ndiza kukhomba enye imodeli enelungelo lokuphila. Kulo luhlu lwamaxabiso kukho ukukhululeka kunye nomgangatho ophezulu .
Iinkcukacha:
- Ireyithi yesampulu yexesha langempela: 200 MSa/s
- Ububanzi be-Analog: 0 - 30 MHz
- Uluhlu lobuthathaka: 10 mV/div ~ 10 V/div
- Ubuninzi begalelo lombane: 60 V (1X probe), 600 V (10X probe).
- Ixesha lokutshayela uluhlu: 500S/div ~ 5nS/div
Ndincoma ukuba ubeke ingqalelo kwizinto eziluncedo ze-oscilloscope:
Izixhobo eziphathwayo ezifana nezi zizinto endizisebenzisa rhoqo. Ukulungeleka kakhulu, ngakumbi xa useka izixhobo ezahlukeneyo, ukujonga, ukuthuma. Ndingancoma ukuthatha inguqulo ye-DSO150, okanye ngcono, i-DSO138 (200kHz) efanayo kwinguqulo ye-DIY yokufunda i-soldering kunye neziseko ze-electronics zerediyo. Phakathi kweemodeli ezisebenzayo, ndingathanda ukuqaphela i-DSO Fniski 100MHz njenge-oscilloscope enexabiso elihle kakhulu / i-bandwidth ratio yokusebenza, kunye ne-Hantek 2D72 njengeyona isebenzayo (3-in-1).
umthombo: www.habr.com
