Aloha!
Ke hoʻohui nei au i kahi ʻatikala pōkole e pili ana i ke kumuhana o ke koho ʻana i kahi oscilloscope home compact level entry no ka hana a me nā leʻaleʻa.
No ke aha mākou e kamaʻilio ai e pili ana i ka ʻeke a me nā mea paʻa - no ka mea ʻo kēia nā koho kālā nui loa. ʻOi aku ka nui o nā oscilloscopes papapihi, nā mea hana, a, ma ke ʻano he kumu, nā hiʻohiʻona kumu kūʻai ($200-400 a ʻoi aku paha) me nā kaha 4 me nā hana he nui.
Akā, hiki ke kūʻai ʻia nā hiʻohiʻona paʻa me 1 kahawai no nā ana maʻalahi a me ka loiloi ʻana i ke ʻano hōʻailona no $20...$40.
No laila, ʻo nā hiʻohiʻona ʻenehana nui o ka pocket oscilloscopes ka bandwidth hana, i ana ʻia ma MHz, a me ka pinepine sampling, e pili pono ana i ka maikaʻi o nā ana.
Ma kēia ʻatikala e hoʻāʻo wau e wehewehe i nā oscilloscopes i loaʻa iaʻu iho a hāʻawi i kekahi mau mea maikaʻi a maikaʻi ʻole o kēia mau hiʻohiʻona.
ʻO ka koho mua i hele ai ka poʻe hoʻokalakupua lekiō he oscilloscope e pili ana i ka microcontroller ATmega he nui nā koho, me ka hui pū ʻana, no ka laʻana, DSO138; ʻO kona hoʻomohala ʻana ma muli o ka microcontroller STM32 i kapa ʻia ʻo DSO150.
- He oscilloscope maikaʻi kēia no ka mea hoʻokani lekiō komo. Aia ka pahu i kahi probe P6020. Loaʻa i ka oscilloscope ponoʻī kahi bandwidth ma kahi o 200 kHz. Kūkulu ʻia ma ke kumu o STM32, ADC a hiki i 1M mau laʻana. He koho maikaʻi no ka hoʻāʻo ʻana i nā lako mana maʻalahi (PWM) a me nā ala leo. He kūpono no ka poʻe hoʻomaka, no ka laʻana, no ke aʻo ʻana i nā hōʻailona kani (hoʻonohonoho ʻana i kahi amplifier, etc.). Ma waena o nā hemahema, ʻike wau i ka hiki ʻole ke mālama i kahi kiʻi oscillogram, a me kahi bandwidth liʻiliʻi.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 1 MSa/s
- Analog Bandwidth: 0 - 200 kHz
- Laulā naʻau: 5 – 20 mV/div
- Volta hookomo kiʻekiʻe: 50V max. (1x ʻimi)
- Ka lōʻihi o ka manawa: 500s/div – 10 µs/div
Inā makemake ʻoe, hiki iā ʻoe ke loaʻa i kahi mana kūʻai ʻole i kūʻai ʻia. He kūpono no ke aʻo ʻana i ka soldering "me ka manaʻo".
Akā ua hala koke ka leʻaleʻa a neʻe ʻo ia i nā hiʻohiʻona koʻikoʻi.
I ka hoʻomaka ʻana o 2018, ʻike wau i kekahi o nā koho kaulana no nā oscilloscopes komo - maʻalahi, akā ʻaʻole maikaʻi.
ʻO ka DSO188 oscilloscope he "mika hōʻike" maʻalahi me hoʻokahi kahawai, ʻaʻohe hoʻomanaʻo, akā me kahi hōʻike kala, kahi pākaukau 300mAh a liʻiliʻi loa i ka nui. ʻO kāna mea maikaʻi ʻo kona compactness a me ka portability, a ua lawa ka band frequency no ka hapa nui o nā noi (no ka laʻana, hoʻonohonoho i nā lako leo).
Ma ke kumu kūʻai haʻahaʻa ($30), hōʻike ia i nā hōʻailona ma 1 MHz (5MSA/s sampling). Hoʻohana ʻia nā ʻōkuhi MMCX no ka hana, akā aia ka pahu i kahi mea hoʻololi MMCX-BNC. Hoʻokomo ʻia kahi 5MSPS ADC ʻokoʻa, ʻo ka bandwidth a hiki i 1 MHz, ua hōʻuluʻulu ʻia ka hihia mai nā panela, e nānā maikaʻi loa. Ma ka ʻaoʻao hoʻohui, ʻike wau i ka nui compact a me ka bandwidth kūpono, i hoʻohālikelike ʻia me ka DSO150 (1 MHz), a me ka nui compact. Maʻalahi loa e hoʻohana pū me kahi mea hoʻāʻo maʻamau. Hoʻopili maʻalahi i kāu ʻeke. ʻO nā minuses, loaʻa ka hihia i kahi hoʻolālā wehe ʻole i pale ʻia mai nā mana o waho (pono e hoʻololi), a me ka hiki ʻole ke hoʻololi i nā kiʻi i mālama ʻia i kahi kamepiula. Maʻalahi ka hele ʻana o kahi mea hoʻohui MMCX, akā no ka hana piha e pono ai ʻoe i kahi adapter BNC a i ʻole nā probes kūikawā. No ke kālā, he koho komo-level maikaʻi loa kēia.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 5 MSa/s
- Analog Bandwidth: 0 - 1 MHz
- Laulā naʻau: 50 mV/div ~ 200 V/div
- Voli uila komo loa: 40 V (1X probe), 400 V (10X probe). ʻAʻohe attenuator hōʻailona i kūkulu ʻia.
- Ka lōʻihi o ka manawa: 100mS/div ~ 2uS/div
Inā ʻaʻole lawa ka megahertz, hiki iā ʻoe ke nānā i nā oscilloscope pocket i loko o kahi hale me kahi mea hoʻohui BNC, no ka laʻana, ka oscilloscope pocket inexpensive DSO FNISKI PRO.
He koho maikaʻi loa kēia no kāu kālā. Band 5 MHz (sine). Hiki ke mālama i nā kiʻi i ka hoʻomanaʻo o loko o ka hāmeʻa.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 20 MSa/s
- Analog Bandwidth: 0 - 5 MHz
- Laulā naʻau: 50 mV/div ~ 200 V/div
- Voli uila komo loa: 40 V (1X probe), 400 V (10X probe). ʻAʻohe attenuator hōʻailona i kūkulu ʻia.
- Ka lōʻihi o ka manawa: 50S/div ~ 250nS/div
(me ka bandwidth a hiki i 10 MHz).
E lawe au i ka koho mua (me nā crocodiles) a kūʻai kaʻawale i nā probes hou. Aia ma lalo ka loulou i nā ʻimi noiʻi.
Ma muli o nā hopena o ka hoʻohana ʻana, makemake wau e nānā i ka hihia ʻoluʻolu a me ka hōʻike nui. Hōʻike ka hōʻailona hōʻike ma 5 MHz (sine) me ka pilikia ʻole, hōʻike maʻamau nā hōʻailona manawa a me aperiodic i ka 1 MHz.
Inā ʻaʻole koʻikoʻi ka bandwidth ma luna o 1 MHz a ʻaʻole pono ʻoe e hana me nā voltages kiʻekiʻe, a laila ʻo ka DSO FNIRSI PRO me kahi mea hoʻohui BNC he koho maikaʻi. Hoʻohana ʻo ia i nā probes maʻamau a hiki ke hoʻohana ʻia ma ke ʻano he ʻeke oscilloscope ʻeke wikiwiki - poke a ʻike inā ola ka hoʻololi, microcircuit, etc. A laila e hehi ma hope o kahi oscilloscope nui, a i ʻole e lawe i ka mea maʻi ma luna o ka papaʻaina a wehe i luna.
Akā inā makemake ʻoe i kahi bandwidth hou aʻe, e hoʻolohe i ka inexpensive
ʻO ka DSO168 oscilloscope kahi hoʻolālā maʻamau e like me nā mea pāʻani MP3 kaulana. He mea hoʻohui kēia (ke kino metala ʻano) a me ka hapa o ka hāmeʻa. ʻAʻole ke koho maikaʻi loa o ka mea hoʻohui - MiniUSB no ka hoʻouka ʻana i ka pā. E nānā pū wau i ka pilina ma o kahi jack 3.5 mm - ka hemahema nui o kēia kükohu.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 50 MSa/s
- Analog Bandwidth: 0 - 20 MHz
- Laulā naʻau: 50 mV/div ~ 200 V/div
- Voli uila komo loa: 40 V (1X probe)
- Ka lōʻihi o ka manawa: 100S/div ~ 100nS/div
ʻO DSO168 kahi mea hoihoi no kona kumukūʻai.
ʻOi aku ka maikaʻi ma mua o ka helu nui o DSO138 like, i kūkulu ʻia ma ke kumu o nā microcontrollers me kahi ADC i kūkulu ʻia (200kHz).
ʻO kēia hiʻohiʻona DSO168 he AD9283 ADC kaʻawale, e hāʻawi ana i ka nānā pono ʻana o nā hōʻailona a hiki i 1 MHz. Hiki i ka 8 MHz, hiki ke hoʻohana ʻia kēia mea, akā ma ke ʻano he "hōʻike" o nā hōʻailona, me ka ʻole o nā ana koʻikoʻi. Akā a hiki i 1 MHz - ʻaʻohe pilikia.
Aia i loko o ka pahu kahi pahu P6100 BNC maʻamau, a me kahi mea hoʻopili mai 3.5mm jack i BNC.
ʻO ka DSO168 oscilloscope he 20 MHz bandwidth (ma ka laʻana pinepine o 60MSA/s), ʻaʻole ka mea kūleʻa loa, akā ʻoi aku ka maikaʻi o ka hihia ala iPod, i kūkulu ʻia i loko o 800 mAh pākahi (hiki ke hoʻohana ʻia mai USB). Hoʻohui ʻia ka like me ka mea pāʻani e nā ʻimi noiʻi ma o kahi jack 3,5 mm (aia kahi adapter BNC-3.5mm). ʻAʻohe hoʻomanaʻo no ka mālama ʻana i nā ʻano nalu. Makemake au e ʻike i kahi hemahema o ka hoʻolālā - ʻaʻole i manaʻo ʻia ka jack 3,5 mm no ka hoʻouna ʻana i nā hōʻailona microwave; No laila, hoihoi ka hāmeʻa, akā koho wau i kahi koho ʻē aʻe.
Ma hope aʻe, manaʻo wau e nānā i kahi kumu kūʻai ʻē aʻe o ka oscilloscope DSO338 me kahi bandwidth 30 MHz.
ʻO kēia kahi oscilloscope i hoʻopaʻa ʻia i ka pākaukau no hoʻokahi kahawai me kahi alapine sampling o ka nui o 200Msps. ʻAʻole maikaʻi nā hiʻohiʻona no nā mea he nui, ua lawa kēia hiʻohiʻona no nā maka. Aia hoʻokahi kahawai, he mau kihi nānā maikaʻi ka hōʻike, a ʻo ka manawa hana a hiki i 8 mau hola ma ka uku hoʻokahi.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 200 MSa/s
- Analog Bandwidth: 0 - 30 MHz
- Laulā naʻau: 50 mV/div ~ 200 V/div
- Voli uila komo loa: 40 V (1X probe), 400 V (10X probe). ʻAʻohe attenuator hōʻailona i kūkulu ʻia.
- Ka lōʻihi o ka wā: 100mS/div ~ 125nS/div
Hoʻohana ʻia kahi mākau P6100 BNC maʻamau no nā ana.
Hana maikaʻi ka oscilloscope ma nā alapine ma luna o 10-20 MHz.
ʻO kahi koho maikaʻi, akā hāʻawiʻia i kona kumukūʻai, hiki iāʻoe ke nānā i nā hiʻohiʻona'ē aʻe.
No ka laʻana, hiki iā ʻoe ke kūʻai i kahi pipiʻi iki
ʻO kahi hiʻohiʻona hou a me kekahi o nā mea maikaʻi loa no ke kālā - kahi oscilloscope hoʻokahi-kanal 100 MHz me ka hoʻomanaʻo. Hiki i nā helu hoʻohālike i 500 Msps.
ʻO ka oscilloscope kekahi o ka "mana" a me ka "paʻakikī" ma kāna kumukūʻai. Aia he 1 BNC channel, akā hiki i ka oscilloscope ke hōʻike i kahi hōʻailona hawewe sine a hiki i 100MHz. ʻO nā hōʻailona manawa a me nā hōʻailona aperiodic e nānā maʻamau a hiki i 70-80 MHz.
Hele mai ka oscilloscope me kahi probe P6100 maikaʻi me ka 10x divider a me ka bandwidth a hiki i 100 MHz, a me kahi hihia no ka mālama ʻana a me ka lawe ʻana.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 500 MSa/s
- Analog Bandwidth: 0 - 100 MHz
- Laulā naʻau: 50 mV/div ~ 100 V/div
- Voli uila komo loa: 80 V (1X probe), 800 V (10X probe). ʻAʻohe attenuator hōʻailona i kūkulu ʻia.
- Ka lōʻihi o ka manawa: 50S/div ~ 6nS/div
Hoʻopili ka oscilloscope me nā hōʻailona ʻaʻole i ʻoi aku ka hewa ma mua o kona kaikuaʻana ʻo Rigol.
E hoʻomaopopo wau i ka nele o ka pilina me ke kamepiula (ʻo kekahi hapa ʻaʻole ia he mea liʻiliʻi, no ka mea ʻaʻohe pono o ka hoʻokaʻawale galvanic), a me ka loaʻa ʻana o hoʻokahi kahawai no ke ana.
He koho maikaʻi ʻo DSO Fniski 100MHz, ʻoiai inā ʻaʻohe mea kūpono a ʻoi aku ka pilikia o ke kumukūʻai. Inā hiki ke hoʻohui, ʻoi aku ka maikaʻi o ka hoʻohui a lawe i kekahi mea ma nā kahawai ʻelua a me ka hiki ke mālama i nā hopena.
ʻO ka pā o 2019 he oscilloscope portable me ke alapine o 40 MHz (aia he kumu hoʻohālike 2C72 a hiki i 70 MHz) me ʻelua mau kahawai a me kahi mea hana alapine. Multimeter i kūkulu ʻia. Hele mai me ka ʻeke ʻeke. Kumukuai mai $99.
Aia ka pahu i nā mea a pau āu e makemake ai + kahi pahu lawe. ʻO nā helu laʻana a hiki i 250MSa/s nā hopena maikaʻi loa no nā oscilloscopes portable. Loaʻa nā mana 2С42 / 2С72 me ka ʻole o kahi mea hana i kūkulu ʻia, akā ʻaʻole hoihoi loa lākou i ke kumukūʻai a me ka hana.
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 250 MSa/s
- Analog Bandwidth: 0 - 40 MHz
- Laulā naʻau: 10 mV/div ~ 10 V/div
- Voli uila komo kiʻekiʻe: 60 V (1X probe), 600 V (10X probe).
- Ka lōʻihi o ka manawa: 500S/div ~ 5nS/div
ʻOi aku ka maikaʻi o ka oscilloscope ma mua o nā mea ma mua, akā ua hoʻolako ʻia ka hiʻohiʻona 2Dx2 me kahi mea hana alapine. Hōʻike ke kiʻi ma lalo nei i ka hana ʻana o kahi hawewe sine 1 MHz.
A i ʻole, ʻaʻole ʻoi aku ka hewa o Hantek ma mua o kona mau kaikuaʻana. E hoʻomaopopo wau i ka hiki ʻana mai o kahi multimeter i kūkulu ʻia, e hana ana i kēia hiʻohiʻona he mea 3-in-1.
Ua pau nā oscilloscopes i loaʻa iaʻu, akā e kuhikuhi aku au i hoʻokahi kumu hoʻohālike i loaʻa ke kuleana o ke ola. I loko o kēia kumukūʻai, aia kahi ʻoluʻolu a kiʻekiʻe .
Kūlana kūpono:
- Lapaʻau laʻana manawa maoli: 200 MSa/s
- Analog Bandwidth: 0 - 30 MHz
- Laulā naʻau: 10 mV/div ~ 10 V/div
- Voli uila komo kiʻekiʻe: 60 V (1X probe), 600 V (10X probe).
- Ka lōʻihi o ka manawa: 500S/div ~ 5nS/div
Manaʻo wau e hoʻolohe i nā mea pono no ka oscilloscope:
ʻO nā mea lawe lima e like me kēia kaʻu e hoʻohana pinepine ai. Maikaʻi loa, ʻoi aku hoʻi i ka hoʻonohonoho ʻana i nā ʻano mea like ʻole, ka nānā ʻana, ka hoʻokō. Hiki iaʻu ke paipai i ka lawe ʻana i ka mana DSO150, a i ʻole ʻoi aku ka maikaʻi, ka DSO138 (200kHz) like i ka mana DIY no ke aʻo ʻana i ka soldering a me nā kumu o ka uila uila. Ma waena o nā hiʻohiʻona hana, makemake wau e hoʻomaopopo i ka DSO Fniski 100MHz e like me ka oscilloscope me ke kumukūʻai maikaʻi loa / hana bandwidth ratio, a me ka Hantek 2D72 e like me ka hana nui loa (3-in-1).
Source: www.habr.com
