I-APEX WAVES NI PCI-1200 Multifunctional IO Idivayisi ye-PCI Bus Computers User Manual

 

I-DAQ
I-NI PCI-1200 Incwadi Yomsebenzisi
I-Multifunctional I/O Idivayisi ye-PCI Bus Computers

Ukusekela Kwezobuchwepheshe Komhlaba Wonke kanye Nolwazi Lomkhiqizo
ni.com
Ikomkhulu Lenkampani Yezinsimbi Kazwelonke
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Ukuze uthole ulwazi olwengeziwe lokusekela, bheka isithasiselo Sezinkonzo Zobuchwepheshe Nezinkonzo Zochwepheshe. Ukuze ubeke amazwana ngemibhalo, thumela i-imeyili ku-techpubs@ni.com.
© 1996–2002 National Instruments Corporation. Wonke Amalungelo Agodliwe.

 

Ulwazi Olubalulekile

Iwaranti
I-NI PCI-1200 iqinisekisiwe ngokumelene nokukhubazeka kokusebenza nokusebenza isikhathi esingangonyaka kusukela ngosuku lokuthunyelwa, njengoba kufakazelwa amarisidi noma amanye amadokhumenti. Amathuluzi Kazwelonke, ngokukhetha kwawo, azolungisa noma ashintshe amathuluzi abonakala enokukhubazeka ngesikhathi sewaranti. Lesi siqinisekiso sihlanganisa izingxenye kanye nezabasebenzi.

Imithombo yezindaba owamukela kuyo isofthiwe ye-National Anstruments iqinisekiswa ukuthi ingahluleki ukwenza imiyalelo yezinhlelo, ngenxa yokukhubazeka kwempahla nokusebenza, isikhathi esiyizinsuku ezingama-90 kusukela ngedethi yokuthunyelwa kwayo, njengoba kufakazelwa amarisidi noma amanye amadokhumenti. Amathuluzi Kazwelonke, ngokukhetha kwawo, azolungisa noma ashintshe imidiya yesofthiwe engasebenzisi imiyalelo yezinhlelo uma Amathuluzi Kazwelonke ethola isaziso salokho konakala ngesikhathi sewaranti. Amathuluzi Kazwelonke awaqinisekisi ukuthi ukusebenza kwesofthiwe ngeke kuphazamiseke noma kungabi namaphutha.

Inombolo ye-Return Material Authorization (RMA) kufanele itholwe efekthri futhi imakwe ngokucacile ngaphandle kwephakeji ngaphambi kokuba noma iziphi izisetshenziswa zizokwamukelwa emsebenzini wewaranti. Amathuluzi Kazwelonke azokhokha izindleko zokuthumela zokubuyela ezingxenyeni zomnikazi ezikhavelelwa iwaranti.

I-National Instruments ikholelwa ukuthi ulwazi olukulo mbhalo lunembile. Idokhumenti yenziwe kabusha ngokucophelelaviewed ukuze uthole ukunemba kobuchwepheshe. Esimeni lapho kukhona amaphutha ezobuchwepheshe noma okuthayipha, Amathuluzi Kazwelonke anelungelo lokwenza izinguquko ezinhlelweni ezilandelayo zalo mbhalo ngaphandle kwesaziso sangaphambili kubaphathi balolu hlobo. Umfundi kufanele abheke Izinsimbi Zesizwe uma kusolwa amaphutha. Akukho mcimbi lapho Amathuluzi Kazwelonke azobophezeleka kunoma yimuphi umonakalo ovela noma ohlobene nalo mbhalo noma ulwazi oluqukethwe kuyo.

NGAPHANDLE NJENGOBA KUBALULEKILE LAPHA, IZIGCAWU ZIKAZWELONKE AWENZI IZIQINISEKISO, EZIKUCHAZILE NOMA EZISHIWO, FUTHI ZIKHIPHULA NGOKUQONDILE NANOMA Isiphi isiqinisekiso
UKUTHENGISWA NOMA UKULUNGELA NGENHLOSO ETHILE. ILUNGELO LEKHASIMENDE LOKUBUYISELA UMONAKALO OBALULEKE IPHUTHA NOMA UKUNGANAMBI Engxenyeni
AMATHUBA KAZWELONKE AYOBEKELWA EMALI NGAKHO-KE EKHOKHWA YIKHASIMENDE. IMISEBENZI KAZWELONKE NGEKE IBOPHELWE
UMONAKALO OBUBELE OKULAHLEKILE IDATHA, IZIMALI, UKUSETSHENZISWA KWEMIKHIQIZO, NOMA UMONAKALO OYIZENZAKALO NOMA OBALULEKE KAKHULU, NOMA UMA BELULEKWA NGAKHO.
LAPHO. Lo mkhawulo wesibopho sezomthetho sama-National Anstruments uzosebenza kungakhathaliseki ukuthi hlobo luni lwesenzo, noma ngabe kuyinkontileka noma ukwephula umthetho, okuhlanganisa ubudedengu. Noma yiziphi izinyathelo ezimelene nezisetshenziswa zikaZwelonke kufanele zenziwe ungakapheli unyaka owodwa ngemuva kokwanda kwesenzo. Amathuluzi Kazwelonke ngeke abe nesibopho sanoma yikuphi ukubambezeleka ekusebenzeni ngenxa yezizathu ezingaphezu kokulawula kwawo okufanele. Iwaranti enikezwe lapha ayifaki umonakalo, amaphutha, ukungasebenzi kahle, noma ukwehluleka kwesevisi okubangelwa ukwehluleka komnikazi ukulandela imiyalelo yokufaka, ukusebenza, noma ukulungiswa kwamathuluzi Kazwelonke; ukuguqulwa komnikazi womkhiqizo; ukuhlukunyezwa komnikazi, ukusetshenziswa kabi, noma izenzo zobudedengu; kanye nokuphelelwa amandla noma amagagasi, umlilo, izikhukhula, ingozi, izenzo zezinkampani zangaphandle, noma ezinye izehlakalo ezingaphandle kokulawula okuphusile.

I-copyright
Ngaphansi kwemithetho yelungelo lobunikazi, lokhu kushicilelwa akumele kukhiqizwe kabusha noma kudluliselwe nganoma yiluphi uhlobo, ngogesi noma ngomshini, okuhlanganisa ukufothokhopha, ukurekhoda, ukugcinwa ohlelweni lokuthola ulwazi, noma ukuhumusha, lonke noma ingxenye, ngaphandle kwemvume ebhaliwe yangaphambili ye-National Instruments. Inhlangano.

Izimpawu zokuhweba
CVI™, DAQCard™, LabVIEWI-™, Measurement Studio™, MITE™, National Instruments™, NI™, ni.com™, NI-DAQ™, kanye ne-SCXI™ yizimpawu zokuthengisa ze-National Instruments Corporation.
Amagama omkhiqizo nawezinkampani ashiwo lapha yizimpawu zokuhweba noma amagama okuhweba ezinkampani zawo.

Amalungelo obunikazi
Ngamalungelo obunikazi amboza imikhiqizo Yezinsimbi Zesizwe, bheka indawo efanele: Usizo»Amalungelo obunikazi kusofthiwe yakho, i-patents.txt file ku-CD yakho, noma ni.com/patents.

ISEXWAYISO MAYELANA NOKUSETSHENZISWA KWEMIKHIQIZO KAZWELONKE YEZIGCAWU
(1) IMIKHIQIZO KAZWELONKE AYIKAZWE NGEZINTO FUTHI IYAHLOLWA IZINGA LOKUTHEMBEKA OKUFANELE UKUSETSHENZISWA NOMA OKUXHUMANA NEZINTO EZOKUFAKA OKUHLANGANISIWE NOMA NJENGEZINGXENYE EZIBALULEKILE KUNOMA YILUPHI UHLELO LOKUSEKELA IMPILO EZWENI EZISISEKO E UKULIMALA OKUBALULEKILE KU UMUNTU.
(2) KUNOMA YILUPHI ISICELO, KUHLANGANISA OKUPHEZULU, UKWETHEMBEKA KOKUSEBENZA KWEMIKHIQIZO YESOFTWARE KUNGAKAKAZWA YIZINTO EZILIMBI, KUHLANGANISA KODWA AKUPHELELE EKUGUQUKA KOKUSHINIKA KWAMANDLA KAgesi, I-COMPUTER HARDWARE, UKUSEBENZA KWE-COMPUTER HARDWARE, UKWENZA KOKUSEBENZA, UKUSEBENZA KWAMANDLA KAZIMALI UKULUNGA KWABAHLANGANISI KANYE I-SOFTWARE YOKUTHUTHUKISA ISETSHENZISWA UKWENZA ISICELO, AMAPHUTHA UKUFAKA, IZINKINGA ZOKUHAMBISANA KWE-SOFTWARE KANYE NE-Hardware, UKWEHLULEKA NOMA UKWEHLULEKA KOKUQAPHA UKUSETSHENZISWA KA-ELEKHISHI NOMA OKULAWULA, UKWEHLULEKA KWESIKHATHI ESIKHATHINI KANYE KANYE KANYE NE-ELECTRONIKI UKUSEBENZISA KAHLE, NOMA AMAPHUTHA NGASO YOMSEBENZISI NOMA UMQANSI WEZINCELO (IZINTO EZINGABI NJENGEZI BONKE ZIBIZWA ngokuthi “UKUHLULEKA UHLELO”). NOMA ILUPHI ISICELO LAPHO UKUHLULEKA UHLELO KUZODALA INGOZI YOKULIMAZA IMPAHLA NOMA ABANTU (KUHLANGANISA NENGOZI YOKULIMALA EMZIMBENI NOKUFA) AKUMELE KUTHEMBEKILE KUPHELA EFOMU OLULODWA LOHLELO LOKUFANELEKILE LWE-ELECTRONIC DUE FLUSE OF THE SYSTEM. UKUZE UGWEME UKULIMALA, UKULIMALA, NOMA UKUFA, UMSEBENZISI NOMA UMQANSI WESICELO KUFANELE ATHATHE IZINYATHELO EZIHLAKANISILEYO UKUZE AVIKELE EKUHLULEKENI KOHLELO, KUHLANGANISA NAKHO KODWA AKUPHELELE UKWENZA Ikhophi yasenqolobaneni NOMA UKUVALA IZINKINGA. NGENXA yokuthi UHLELO NGALUNYE LOKUSEBENZA LOKUSEBENZA FUTHI LEHLUKA EZINKULUMENI ZOKUHLOLA ZIKAZWELONKE ZOKUHLOLA FUTHI NGENXA yokuthi UMSEBENZISI NOMA UMQANSI WESICELO ANGASEBENZISA IMIKHIQIZO KAZWELONKE YEZITHULUTHU NGOKUHLANGANISA NEMINYE IMIKHIQIZO EPHAWISIWEYO NGENXA YEZINDLU EZIBONAKALISIWEYO. UMSEBENZISI NOMA UMQANSI WOKUSEBENZA NGU EKUGCINENI UNOMANDLA WOKUQINISEKISA NOKUQINISEKISA UKUFANELEKA KWEMIKHIQIZO KAZWELONKE YEMIKHIQIZO UMA IMIKHIQIZO KAZWELONKE IHLANGANISIWE OHLELO NOMA ISICELO, KUHLANGANISA, NGAPHANDLE KOMNIKELO, UKUSEBENZA OKUFANELEKILE, OKUFANELEKILE, OKUFANELEKILE KANYE NOKUSEBENZA OKUFANELEKILE. I-CATION.

 

Mayelana Nale Manuwali

Le manuwali ichaza izici zikagesi nezomshini ze-National Instruments PCI-1200 data acquisition (DAQ) idivayisi futhi iqukethe ulwazi olumayelana nokusebenza kwayo nohlelo. I-NI PCI-1200 iyi-analog ye-multifunction ebiza kancane, idijithali, kanye nedivayisi yesikhathi. I-NI PCI-1200 iyilungu le-National Instruments PCI Series yamadivayisi okwandisa amakhompyutha ebhasi e-PCI. Lawa madivayisi adizayinelwe ukutholwa kwedatha yokusebenza okuphezulu nokulawula izinhlelo zokusebenza ekuhlolweni kwaselabhorethri, ukuhlolwa kokukhiqiza, nokuqapha nokulawula inqubo yezimboni.

Izivumelwano Ezisetshenziswe Kule Manuwali

Imibhalo Yezinsimbi Zikazwelonke
I-PCI-1200 User Manual iyisiqephu esisodwa semibhalo esethelwe wena
Uhlelo lwe-DAQ. Ungaba nanoma yiziphi izinhlobo eziningana zamamanyuwali, kuye ngehadiwe nesofthiwe ohlelweni lwakho. Sebenzisa amamanuwali onawo kanje:

• Ukuqalisa nge-SCXI—Uma usebenzisa i-SCXI, lena imanuwali yokuqala okufanele uyifunde. Inikeza phezuview yesistimu ye-SCXI futhi iqukethe ulwazi oludingeka kakhulu lwamamojula, i-chassis, nesofthiwe.
• Imanuwali ye-SCXI Chassis—Uma usebenzisa i-SCXI, funda le manuwali ukuze uthole ulwazi lokugcinwa kwe-chassis neziyalezo zokuyifaka.
• Imanyuwali yomsebenzisi wezingxenyekazi zekhompyutha ze-SCXI—Uma usebenzisa i-SCXI, funda la mabhukwana ngokulandelayo ukuze uthole ulwazi oluningiliziwe mayelana noxhumo lwesignali nokucushwa kwemojuli. Baphinde bachaze ngokuningiliziwe ukuthi imojuli isebenza kanjani futhi iqukethe amasu ohlelo lokusebenza.
• Imanyuwali yomsebenzisi wezingxenyekazi zekhompyutha ye-DAQ—Lawa manuwali anolwazi oluningiliziwe mayelana nezingxenyekazi zekhompuyutha ze-DAQ ezixhumeka kukho noma ezixhunywe kukhompuyutha. Sebenzisa lawa manuwali ngokufakwa kwezingxenyekazi zekhompuyutha nemiyalelo yokumisa, imininingwane ebekiwe mayelana nehardware ye-DAQ, namacebo ohlelo.
• Amadokhumenti e-software—EksampImibhalo yesofthiwe ongase ube nayo ilebhuVIEW noma amasethi emibhalo ye-LabWindows/CVI kanye nemibhalo ye-NI-DAQ. Ngemuva kokusetha isistimu yehadiwe, sebenzisa isoftware yohlelo (LabVIEW noma i-LabWindows/CVI) noma imibhalo ye-NI-DAQ ukuze ikusize ubhale isicelo sakho. Uma unesistimu enkulu futhi eyinkimbinkimbi, kuyafaneleka ukubheka imibhalo yesofthiwe ngaphambi kokumisa ihadiwe.
• Imihlahlandlela yokufaka izesekeli noma amamanyuwali—Uma usebenzisa imikhiqizo yesesekeli, funda ibhulokhi yetheminali kanye nemihlahlandlela yokufaka ikhebula kanye nezisetshenziswa zemanyuwali zomsebenzisi. Bachaza indlela yokuxhuma ngokomzimba izingcezu ezifanele zesistimu. Bheka le mihlahlandlela lapho wenza ukuxhumana.

Imibhalo Ehlobene
Amadokhumenti alandelayo aqukethe ulwazi ongaluthola luwusizo:

• Okokufundisa kwe-NI Developer Zone, i-Field Wiring kanye nokucatshangelwa komsindo wama-Analog Signals, atholakala ku-ni.com/zone
• I-PCI Local Bus Specification, Ukubuyekeza 2.2, kuyatholakala ku-pcisig.com
• Imanuwali yereferensi yekhompyutha

 

1. Isingeniso

Lesi sahluko sichaza i-NI PCI-1200, sibala lokho okudingayo ukuze uqalise, ukukhetha kwezinhlelo zesofthiwe, kanye nemishini ozikhethela yona, futhi sichaza indlela yokwakha izintambo zangokwezifiso nokuqaqa i-NI PCI-1200. Mayelana ne-NI PCI-1200

Siyabonga ngokuthenga i-NI PCI-1200, i-analog esebenza ngokuningi esebenza kahle ebiza kancane, edijithali, kanye neyesikhathi yamakhompyutha ebhasi e-PCI.

I-NI PCI-1200 ineziteshi eziyisishiyagalombili ze-analog (AI) ongazilungisa zibe okokufaka okuyisiphetho okukodwa noma okune okuhlukile, i-12-bit ngokulandelana-approximation A/D converter (ADC), iziguquli ezimbili ze-12-bit D/A (ama-DAC) ane-voltagImiphumela ye-e, imigqa engu-24 ye-TTL-compatible digital I/O (DIO), kanye nezibali/izikhathi ezintathu ze-16-bit ze-I/O (TIO) yesikhathi. Imininingwane enemininingwane ye-NI PCI-1200 ikuSithasiselo A, Ukucaciswa.

Okudingayo Ukuze Uqalise
Ukuze usethe futhi usebenzise i-NI PCI-1200 yakho, udinga izinto ezilandelayo:
❑ Ikhompyutha
❑ Idivayisi ye-NI PCI-1200
❑ I-NI PCI-1200 Incwadi Yomsebenzisi
❑ Enye yalezi zinhlelo zesofthiwe kanye nemibhalo elandelayo:
– LabVIEW ye-Macintosh noma iWindows
- I-Measurement Studio yeWindows
- I-NI-DAQ ye-Macintosh noma iWindows

Izinketho Zokuhlela Isoftware
Lapho uhlela izingxenyekazi zekhompuyutha ze-National Instruments DAQ, ungasebenzisa imvelo yokuthuthukisa uhlelo lwe-NI (ADE) noma amanye ama-ADE. Kunoma ikuphi, usebenzisa i-NI-DAQ.

I-NI-DAQ
I-NI-DAQ, ehamba nge-NI PCI-1200, inomtapo wezincwadi obanzi wemisebenzi ongayibiza usuka kwa-ADE. Le misebenzi ikuvumela ukuthi usebenzise zonke izici ze-NI PCI-1200.

I-NI-DAQ yenza ukusebenzisana okuningi okuyinkimbinkimbi, njengokuphazamiseka kwezinhlelo, phakathi kwekhompyutha nehadiwe ye-DAQ. I-NI-DAQ igcina ukusebenzelana kwesofthiwe okungaguquki phakathi kwezinguqulo zayo ezihlukene ukuze ukwazi ukushintsha amapulatifomu anokuguqulwa okuncane kukhodi. Ukuthi usebenzisa i-LabVIEW, Isitudiyo Sokulinganisa, noma amanye ama-ADE, uhlelo lwakho lokusebenza lisebenzisa i-NI-DAQ, njengoba kubonisiwe kuMfanekiso 1-1.

Umfanekiso 1-1. Ubudlelwano Phakathi Kwendawo Yokuhlela, i-NI-DAQ, ne-Hardware

Ukulanda ikhophi yamahhala yenguqulo yakamuva ye-NI-DAQ, chofoza Landa Isoftware ku-ni.com.

Izinsimbi Zikazwelonke ze-ADE Software
IlebhuVIEW ihlanganisa ihluzo ezisebenzisanayo, isixhumi esibonakalayo sesimanjemanje, kanye nolimi olunamandla lokuhlela. I-LabVIEW I-Data Acquisition VI Library, uchungechunge lwamathuluzi abonakalayo okusebenzisa IlebhuVIEW nge-National Instruments DAQ hardware, ifakiwe ne-LabVIEW. I-Measurement Studio, ehlanganisa i-LabWindows/CVI, amathuluzi e-Visual C++, namathuluzi e-Visual Basic, iyisudi yokuthuthukisa ekuvumela ukuthi usebenzise i-ANSI C, i-Visual C++, ne-Visual Basic ukuze udizayine isofthiwe yokuhlola neyokulinganisa. Konjiniyela be-C, i-Measurement Studio ihlanganisa i-LabWindows/CVI, indawo yokuthuthukiswa kohlelo lokusebenza ye-ANSI C ehlanganiswe ngokugcwele enezithombe ezisebenzisanayo kanye Nokuthola Idatha Ye-LabWindows/CVI kanye nemitapo yolwazi ye-Easy I/O. Konjiniyela be-Visual Basic, i-Measurement Studio ifaka isethi yezilawuli ze-ActiveX zokusebenzisa izingxenyekazi zekhompuyutha ze-National Instruments DAQ. Lezi zilawuli ze-ActiveX zinikeza isixhumi esibonakalayo sezinga eliphezulu sokwakha amathuluzi abonakalayo. Konjiniyela be-Visual C++, I-Measurement Studio inikeza isethi yamakilasi e-Visual C++ namathuluzi okuhlanganisa lawo makilasi kuzinhlelo zokusebenza ze-Visual C++. Amalabhulali, izilawuli ze-ActiveX, namakilasi atholakala nge-Measurement Studio kanye ne-NI-DAQ.

Ukusebenzisa i-LabVIEW noma Isitudiyo Sokulinganisa sinciphisa kakhulu isikhathi sokuthuthukisa sokutholwa kwedatha yakho kanye nohlelo lokusebenza lokulawula.

Izisetshenziswa ozikhethela
I-NI inikeza imikhiqizo eyahlukene ongayisebenzisa nedivayisi ye-NI PCI-1200, okuhlanganisa izintambo, amabhulokhi okuxhuma, nezinye izesekeli, kanje:

• Izintambo ezivikelekile namakhebula ahlanganisayo
• Amabhulokhi ezixhumi, izintambo zamabhasi e-RTSI, amatheminali avikelwe angu-50 kanye nezikhonkwane ezingu-68
• Amamojula we-SCXI nezinye izesekeli zokuzihlukanisa, ampamasiginali aphakamisayo, ajabulisayo, kanye nama-multiplexing okudluliselwa kanye nokuphumayo kwe-analog. Nge-SCXI ungalungisa futhi uthole iziteshi ezingafika ku-3,072. Ukuze usebenzise i-NI PCI-1200 nge-SCXI udinga i-adaptha ye-SCXI-1341.
• Amamojula okulungisa amasignali anenani eliphansi lesiteshi, amadivaysi, kanye nezinsiza, okuhlanganisa isimo samageji obunzima kanye nezitholi zokushisa zokumelana (RTDs), kanyekanyeample bese ubamba, bese udlulisela

Ukuze uthole ulwazi olwengeziwe mayelana nezinto ozikhethela zona ezitholakala kwa-NI, bheka ku ni.com/catalog.

Ikhebula Ngokwezifiso
I-NI ikunikeza amakhebuli nezinto ezisetshenziswayo ukuze ufanekisele uhlelo lwakho lokusebenza noma ukusebenzise uma ushintsha njalo ukuxhuma kwedivayisi.
Uma ufuna ukwakha eyakho ikhebuli, nokho, le mihlahlandlela elandelayo ingase ibe usizo:
• Kumasiginali we-AI, izintambo ezisontekile ezivikelekile zepheya ngayinye ye-AI zikhiqiza imiphumela engcono kakhulu, kucatshangwa ukuthi usebenzisa okokufaka okuhlukile. Bopha isihlangu sebhangqa lesiginali ngayinye kusithenjwa esiphansi emthonjeni.
• Kufanele uhambise imigqa ye-analogi ngokwehlukana nemigqa yedijithali.
• Uma usebenzisa isivikelo sekhebula, sebenzisa izihlangu ezihlukene ze-analog nengxenye yedijithali yekhebula. Ukwehluleka ukwenza kanjalo kubangela ukuhlangana komsindo kumasignali e-analogi osuka kumasignali edijithali yesikhashana.
Isixhumi sokukhwelana se-NI PCI-1200 siyindawo engama-50, esenziwe i-polarized, isixhumi sesokhethi seribhoni esinokukhululeka kobunzima. I-NI isebenzisa isixhumi se-polarized (keyed) ukuvimbela ukuxhuma okubheke phansi okungaqondile ku-NI PCI-1200.

Ukuqaqa
I-NI PCI-1200 ithunyelwa ngephakeji ye-antistatic ukuvimbela ukulimala kwe-electrostatic kudivayisi. I-Electrostatic discharge (ESD) ingalimaza izingxenye ezimbalwa kudivayisi. Ukuze ugweme umonakalo onjalo ekuphatheni idivayisi, thatha izinyathelo zokuphepha ezilandelayo:

Isexwayiso Ungalokothi uthinte izikhonkwane eziveziwe zezixhumi.
• Zigwebe usebenzisa ibhande eliphansi noma ngokubamba into ephansi.
• Thinta iphakheji ye-antistatic engxenyeni yensimbi ye-chassis yekhompyutha yakho ngaphambi kokukhipha idivayisi ephaketheni.

Khipha idivayisi ephaketheni bese uhlola idivayisi ukuze uthole izingxenye ezixegayo nanoma yiluphi olunye uphawu lomonakalo. Yazisa i-NI uma idivayisi ibonakala ilimele nganoma iyiphi indlela. Ungafaki idivayisi eyonakele kukhompyutha yakho. Gcina i-NI PCI-1200 emvilophini ephikisayo uma ingasetshenziswa.

Ulwazi Lokuphepha
Isigaba esilandelayo siqukethe ulwazi olubalulekile lokuphepha okufanele ululandele ngesikhathi ufaka nokusebenzisa umkhiqizo.
Ungawusebenzisi umkhiqizo ngendlela engacacisiwe kule dokhumenti.
Ukusebenzisa kabi umkhiqizo kungadala ingozi. Ungafaka engozini ukuvikelwa kokuphepha okwakhelwe emkhiqizweni uma umkhiqizo wonakaliswa nganoma iyiphi indlela. Uma umkhiqizo wonakele, uwubuyisele kwa-NI ukuze ulungiswe.
Uma umkhiqizo ukalelwe ukusetshenziswa nge-hazardous voltages (>30 Vrms, 42.4 Vpk, noma 60 Vdc), ungase udinge ukuxhuma intambo yasemhlabeni ephephile ngokwemiyalelo yokufaka. Bheka Isithasiselo A, Imininingwane, ukuze uthole umthamo omkhulutage izilinganiso.
Ungashintshi izingxenye noma uguqule umkhiqizo. Sebenzisa umkhiqizo kuphela nge-chassis, amamojula, izesekeli, nezintambo ezishiwo emiyalweni yokufaka. Kufanele ube nawo wonke amakhava namaphaneli okugcwalisa ngesikhathi sokusebenza komkhiqizo.
Ungawusebenzisi umkhiqizo endaweni eneziqhumane noma lapho kungase kube namagesi avuthayo noma intuthu. Sebenzisa umkhiqizo kuphela noma ngaphansi kwezinga lokungcola elishiwo kuSithasiselo A, Imininingwane. Ukungcoliswa yizinto zangaphandle esimweni esiqinile, esiwuketshezi, noma esinegesi esingakhiqiza ukuncishiswa kwamandla we-dielectric noma ukumelana nokukhanya kwendawo. Okulandelayo incazelo yamadigri okungcola:
• Idigri 1 yokungcola isho ukuthi akukho kungcola noma ukungcola okomile, okungaqhubeki okwenzekayo. Ukungcola akunawo umthelela.
• Iziqu 2 zokungcola zisho ukuthi ukungcola okungeyona conductive kuphela okwenzeka ezimweni eziningi. Ngezinye izikhathi, nokho, ukuqhutshwa kwesikhashana okubangelwa ukufingqa kufanele kulindelwe.
• I-pollution degree 3 isho ukuthi kwenzeka ukungcoliswa kwe-conductive, noma ukungcola okomile, okungeyona conductive kwenzeka, okuhamba kahle ngenxa yokufiphala.

Hlanza umkhiqizo ngebhulashi elithambile elingelona elensimbi. Umkhiqizo kumele wome ngokuphelele futhi ungangcolisi ngaphambi kokuwubuyisela emsebenzini.

Kufanele uvale ukuxhumeka kwesignali ukuze uthole ivolumu ephezulutage lapho umkhiqizo ulinganiselwe khona. Ungeqi izilinganiso eziphezulu zomkhiqizo.

Susa amandla emigqeni yesignali ngaphambi kokuxhuma noma ukunqanyulwa kumkhiqizo.

Sebenzisa lo mkhiqizo kuphela noma ngaphansi kwesigaba sokufaka esishiwo ku-Appendix A, Imininingwane.

Okulandelayo incazelo yezigaba zokufaka:

• Isigaba Sokufaka I singokwezilinganiso ezenziwa kumasekhethi angaxhumekile ngokuqondile ku-MAINS1. Lesi sigaba yizinga lesiginali elifana ne-voltages kudivayisi yocingo ephrintiwe (PWB) kwesibili kwesiguquli sokuhlukanisa.
ExampIzigaba Zesigaba Sokufaka I ziyizilinganiso zamasekhethi ezingasuselwe kokuthi AMAINS futhi avikelwe ngokukhethekile (zangaphakathi) amasekhethi asuselwa ku-MAINS.
• Isigaba Sokufaka II singesezilinganiso ezenziwa kumasekhethi axhumeke ngqo ku-low-voltage ukufakwa. Lesi sigaba sisho ukusatshalaliswa kwezinga lendawo njengalokho okunikezwa i-outlet evamile yodonga.
ExampIzigaba Zesigaba Sokufakwa II ziyizilinganiso zezinto zikagesi zasendlini, amathuluzi aphathekayo, nezinto ezifanayo.
• Isigaba sokufakwa kwe-III singokwezilinganiso ezenziwa ekufakweni kwebhilidi. Lesi sigaba izinga lokusabalalisa elibhekisela ezintweni ezisebenza ngocingo olungancikile ekufakeni okuvamile kwesakhiwo.
ExampIzigaba Zesigaba III Sokufaka zihlanganisa izilinganiso kumasekhethi okusabalalisa kanye nama-circuit breaker. Okunye exampngaphansi kwe
Isigaba Sokufaka III izintambo ezihlanganisa izintambo, amabha amabhasi, amabhokisi okuhlanganayo, amaswishi, amasokhethi esakhiweni/ukufakwa okugxilile, nezinto zokusebenza ezisetshenziswa embonini, njengamamotho amile anoxhumo unomphela esakhiweni/ukufakwa okugxilile.
• Isigaba Sokufaka IV esokulinganisa okwenziwe emthonjeni wevolumu ephansitage (<1,000 V) ukufakwa.
ExampIzigaba Zesigaba Sokufaka IV zingamamitha kagesi, kanye nezilinganiso kumadivayisi ayinhloko okuvikela i-overcurrent kanye namayunithi okulawula i-ripple.

I-1 MAINS ichazwa njengohlelo lokuphakelwa kukagesi lapho okokusebenza okuthintekayo kuklanyelwe ukuxhunywa noma ukunika amandla okokusebenza noma ngezinjongo zokulinganisa.

Ngezansi kunomdwebo we-asample ukufakwa.

 

2. Ukufaka kanye nokulungiselela i-NI PCI-1200

Lesi sahluko sichaza indlela yokufaka nokulungisa i-NI PCI-1200.

Ifaka Isofthiwe
Uma usebenzisa i-NI-DAQ noma isofthiwe yohlelo lokusebenza lwe-NI, bheka imiyalelo yokufaka kumadokhumenti esofthiwe yakho ukuze ufake futhi ulungiselele isofthiwe yakho.

Qedela izinyathelo ezilandelayo ukufaka isofthiwe ngaphambi kokufaka i-NI PCI-1200.

1. Faka indawo yokuthuthukisa uhlelo lokusebenza (ADE), njengeLabVIEW noma Isitudiyo Sokulinganisa, ngokwemiyalelo eku-CD namanothi okukhululwa.
2. Faka i-NI-DAQ ngokwemiyalelo eku-CD kanye ne-DAQ Quick Start Guide efakwe ne-NI PCI-1200.
   Qaphela Kubalulekile ukufaka i-NI-DAQ ngaphambi kokufaka i-NI PCI-1200 ukuze uqinisekise ukuthi i-NI PCI-1200 itholwa ngendlela efanele.

Ifaka i-Hardware
Okulandelayo imiyalelo yokufaka okuvamile. Bheka ikhompuyutha noma imanuwali yomsebenzisi we-chassis noma imanuwali yereferensi yobuchwepheshe ukuze uthole imiyalelo ethile nezexwayiso mayelana namadivayisi amasha.
1. Vala futhi ukhiphe ikhompyutha yakho.
2. Susa ikhava ephezulu noma imbobo yokufinyelela esiteshini se-I/O.
3. Khipha ikhava ye-slot enwetshiwe ephaneli elingemuva lekhompyutha.
4. Zigxilise usebenzisa ibhande eliphansi noma ngokubamba into ephansi. Landela izexwayiso zokuvikela ze-ESD ezichazwe esigabeni Sokuqaqa seSahluko 1, Isingeniso.

5. Faka i-NI PCI-1200 ku-slot yesistimu ye-PCI engasetshenziswa. Ukulingana kungase kuqine, kodwa ungaphoqeleli idivayisi endaweni yayo.
6. Khipha i-NI PCI-1200 ubakaki okhuphukayo kumzila wephaneli wangemuva wekhompuyutha noma sebenzisa amathebhu aseceleni kwesikhala, uma etholakala, ukuze uvikele i-NI PCI-1200 endaweni.
7. Faka esikhundleni ikhava ephezulu kukhompuyutha. Qinisekisa ukufakwa.
Qiniseka ukuthi idivayisi ayithinti ezinye izisetshenziswa noma izingxenye futhi ifakwe ngokugcwele esikhaleni.
8. Xhuma futhi uvule ikhompuyutha.

Idivayisi ye-NI PCI-1200 ifakiwe.

Ilungiselela Idivayisi
I-NI PCI-1200 iyisofthiwe elungisekayo ngokuphelele. I-NI PCI-1200 ihambisana ngokugcwele ne-PCI Local Bus Specification, Revision 2.2. Ngakho-ke, zonke izinsiza zedivayisi zinikezwa isistimu ngokuzenzakalelayo. Ku-NI PCI-1200, lesi sabelo sihlanganisa ikheli lememori eyisisekelo kanye nezinga lokuphazamisa. Awudingi ukwenza noma yiziphi izinyathelo zokumisa ngemva kokuthi isistimu inamandla.

Ukucushwa kwe-Analog I/O
Lapho amandla-up noma ngemva kokusetha kabusha isofthiwe, i-NI PCI-1200 isethelwe ekucushweni okulandelayo:
• Imodi yokufaka enesiphetho esisodwa okubhekiselwe kuyo
• ±5 V AI ububanzi (bipolar)
• ±5 V okukhiphayo kwe-analog (AO) ububanzi (i-bipolar)
Ithebula 2-1 libala zonke izilungiselelo ezitholakalayo ze-analog I/O ze
I-NI PCI-1200 futhi ikhombisa ukucushwa kusimo sokusetha kabusha.

Ithebula 2-1. Izilungiselelo ze-Analog I/O

Zombili izifunda ze-AI ne-AO ziyi-software elungisekayo. Bheka imibhalo yesofthiwe ukuze uthole ulwazi olwengeziwe ngokushintsha lezi zilungiselelo.

I-Analog Output Polarity
I-NI PCI-1200 ineziteshi ezimbili ze-AO voltage kusixhumi se-I/O. Ungalungiselela ishaneli ngayinye yokukhiphayo ye-AO ukuze uthole okuphumayo kwe-unipolar noma kwe-bipolar. Ukucushwa kwe-unipolar kunobubanzi obungu-0 kuye ku-10 V ekuphumeni kwe-analog. Ukucushwa kwe-bipolar kunobubanzi obusuka ku--5 ukuya ku-+5 V ekuphumeni kwe-analog. Ngaphezu kwalokho, ungakhetha uhlelo lokufaka amakhodi lwe-DAC ngayinye njengokuhambisana okubili noma kanambambili okuqondile.

Uma ukhetha ububanzi be-bipolar be-DAC, ukufakwa kwamakhodi okuhambisanayo kokubili kuyanconywa. Kule modi, amanani edatha abhalelwe isiteshi se-AO asukela ku-F800 hex (–2,048 desimali) kuye ku-7FF hex (2,047 desimali). Uma ukhetha ibanga le-unipolar le-DAC, ikhodi kanambambili eqondile iyanconywa. Kule modi, amanani edatha abhalelwe isiteshi se-AO asukela ku-0 kuye ku-FFF hex (4,095 desimali).

I-Analog Input Polarity
Ungakhetha okokufaka kwe-analog ku-NI PCI-1200 noma kububanzi be-unipolar (0 ukuya ku-10 V) noma ububanzi be-bipolar (–5 ukuya ku-+5 V). Ngaphezu kwalokho, ungakhetha uhlelo lokubhala amakhodi lokufaka kwe-analog njengokuhambisana nokubili noma kanambambili oqondile. Uma ukhetha ububanzi be-bipolar, ukufakwa kwamakhodi okuhambisanayo kokubili kuyanconywa. Kule modi, –5 V okokufaka kuhambisana ne-F800 hex (–2,048 desimali) futhi +5 V ihambisana ne-7FF hex (2,047 desimali). Uma ukhetha imodi ye-unipolar, ikhodi kanambambili eqondile iyanconywa. Kule modi, okokufaka okungu-0 V kuhambisana no-0 hex, futhi +10 V kuhambisana ne-FFF hex (4,095 desimali).

Imodi yokufaka ye-Analogi
I-NI PCI-1200 inezinhlobo ezintathu zokufaka—imodi yokufaka ekhonjiswe nge-single-end (RSE), imodi yokufaka engabhekiselwanga ene-single-end (NRSE), kanye nemodi yokufaka ehlukile (DIFF). Ukulungiselela okokufaka okukhawulelwe okukodwa kusebenzisa amashaneli ayisishiyagalombili. Ukucushwa kokufaka kwe-DIFF kusebenzisa amashaneli amane. Ithebula 2-2 lichaza lokhu kulungiselelwa.

Ithebula 2-2. Amamodi Wokufaka we-Analog we-NI PCI-1200

Ngenkathi ufunda izigaba ezilandelayo, ungase ukuthole kuwusizo ukubhekisela esigabeni Sokuxhunywa Kwesiginali Yokufaka kwe-Analog seSahluko sesi-3, Ukuxhunywa Kwesiginali, esiqukethe imidwebo ebonisa izindlela zesignali zokucushwa okuthathu.

Imodi Yokufaka ye-RSE (Iziteshi Eziyisishiyagalombili, Setha Kabusha Isimo)
Okokufaka kwe-RSE kusho ukuthi wonke amasiginali okufakwayo abhekiselwa endaweni efanayo futhi eboshelwe endaweni ye-NI PCI-1200 AI. Umehluko ampokokufaka kwe-lifier negative kuboshelwe emhlabathini we-analog. Imodi ye-RSE iwusizo ekulinganiseni imithombo yesignali entantayo. Ngalokhu kulungiselelwa kokufaka, i-NI PCI-1200 ingaqapha iziteshi eziyisishiyagalombili ze-AI.

Ukucatshangelwa kokusebenzisa imodi ye-RSE kuxoxwe ngakho eSahlukweni 3, Ukuxhunywa Kwesiginali. Qaphela ukuthi kule modi, indlela yokubuya yesiginali ingaphansi kwe-analog kusixhumi ngephinikhodi ye-AISENSE/AIGND.

Imodi yokufaka ye-NRSE (Amashaneli ayisishiyagalombili)
Okokufaka kwe-NRSE kusho ukuthi wonke amasiginali okufakwayo abhekiselwa kuvolumu yemodi efanayo efanayotage, entantayo ngokuphathelene nomhlabathi we-analog we-NI PCI-1200. Le voltagu-e kamuva ususwa okokusebenza kokufakwayo ampi-lifier. Imodi ye-NRSE iwusizo ekulinganiseni imithombo yesignali ekhonjwe phansi.

Ukucatshangelwa kokusebenzisa imodi ye-NRSE kuxoxwe ngakho eSahlukweni 3, Ukuxhunywa Kwesiginali. Qaphela ukuthi kule modi, indlela yokubuya kwesiginali idlula kutheminali eyinegethivu ye ampi-lifier kusixhumi ngephinikhodi ye-AISENSE/AIGND.

Imodi yokufaka ye-DIFF (Iziteshi ezine)
Ukufakwa kwe-DIFF kusho ukuthi isignali ngayinye yokufaka inereferensi yayo, futhi umehluko phakathi kwesignali ngayinye nereferensi yayo uyalinganiswa. Isiginali kanye nereferensi yayo ngayinye inikezwa ishaneli yokufaka. Ngalokhu kucushwa kokufaka, i-NI PCI-1200 ingakwazi ukuqapha amasiginali amane e-AI ahlukene. Ukucatshangelwa kokusebenzisa imodi ye-DIFF kuxoxwe ngakho eSahlukweni 3, Ukuxhumana Kwesiginali. Qaphela ukuthi indlela yokubuya kwesignali idlula kutheminali enegethivu ye ampi-lifier nangeshaneli 1, 3, 5, noma 7, kuye ngokuthi ukhetha yiphi ipheya yesiteshi.

 

3. Ukuxhumana Kwesiginali

Lesi sahluko sichaza ukuthi kwenziwa kanjani ukuxhuma kwesignali okokufaka nokukhiphayo ku-NI PCI-1200 ngesixhumi sedivayisi ye-I/O futhi sinikeze imininingwane ngezicaciso zesikhathi ze-I/O.
Isixhumi se-I/O se-NI PCI-1200 sinamaphinikhodi angu-50 ongakwazi ukuwaxhuma kuzinsiza zamaphini angu-50.

I/O Isixhumi
Umfanekiso 3-1 ubonisa imisebenzi yephinikhodi yesixhumi se-NI PCI-1200 I/O. Isexwayiso Akufanele ushayele ngaphandle imigqa ye-DIO ngenkathi ikhompyutha icishiwe; ukwenza njalo kungalimaza ikhompuyutha. I-NI ayinasibopho sanoma yimuphi umonakalo ovela ekuxhumekeni kwesignali okweqa lezi zilinganiso eziphezulu. Ukuxhumana, okuhlanganisa amasiginali wamandla axhumayo emhlabathini futhi ngokuphambene nalokho, okudlula noma yiziphi izilinganiso eziphezulu zamasiginali okokufaka noma okukhiphayo ku-NI PCI-1200 kungalimaza i-NI PCI-1200 kanye nekhompyutha.

Isahluko 3 Ukuxhumana Kwesiginali

Umfanekiso 3-1. Izabelo zephinikhodi ye-NI PCI-1200 I/O

Izincazelo Zokuxhumanisa Isiginali
Ithebula elilandelayo lichaza izikhonkwane zokuxhuma kusixhumi se-NI PCI-1200 I/O ngenombolo yephini futhi linikeza igama lesignali nencazelo yephinikhodi yesixhumi sesignali ngasinye.

Ithebula 3-1. Izincazelo Zesiginali ze-NI PCI-1200 I/O Izikhonkwane Zokuxhuma

Izikhonkwane zokuxhuma zihlelwe zaba izikhonkwane zesignali ye-AI, izikhonkwane zesignali ye-AO, izikhonkwane zesignali ye-DIO, izikhonkwane zesignali ye-TIO, nokuxhumeka kwamandla. Izigaba ezilandelayo zichaza imihlahlandlela yokuxhuma isignali yeqembu ngalinye kulawa.

Izixhumanisi Zesiginali Yokokufaka kwe-Analogi
Izikhonkwane 1 kuya ku-8 ziyizikhonkwane zesignali ye-AI ye-12-bit ADC. I-Pin 9, AISENSE/AIGND, isignali evamile ye-analog. Ungasebenzisa le phini kuthayi yaphansi yamandla e-analog evamile ku-NI PCI-1200 kumodi ye-RSE noma njengendlela yokubuyisela kumodi ye-NRSE. I-Pin 11, AGND, iyindawo yokubuyisela yamanje echemile yokulinganisa okuhlukile. Izikhonkwane 1 kuya ku-8 ziboshelwe eziteshini eziyisishiyagalombili ze-AI ezinokuphela okukodwa zokuphindaphinda okokufaka ngokusebenzisa izixhasi zochungechunge ezingu-4.7 kΩ. Izikhonkwane 2, 4, 6, kanye no-8 futhi ziboshelwe ku-multiplexer yokufaka yemodi ye-DIFF.

Ububanzi besiginali yokokufaka ACH<7..0> kuzo zonke izinzuzo ezingaba khona ziboniswa kuThebula 3-2 kanye no-3-3. Ukweqa ububanzi besignali yokufaka ngeke kulimaze i-circuitry yokufaka inqobo nje uma ubuningi bevolthi yokufaka amandla evuliwetagIsilinganiso se-e esingu-±35 V noma i-powered off voltagIsilinganiso sika-e esingu-±25 V aseqiwe. I-NI PCI-1200 iqinisekisiwe ukuthi izomelana nokokufaka kuze kufike ku-voltage enkulu yokufakatagisilinganiso.

Isixwayiso Ukweqa ububanzi besiginali yokufaka kuhlanekezela amasignali okokufaka. Yeqa inani eliphezulu
okokufaka voltagukulinganisa kungalimaza idivayisi ye-NI PCI-1200 kanye nekhompyutha. I-NI ayinacala
nganoma imuphi umonakalo obangelwa ukuxhumana okunjalo kwesignali.

Ithebula 3-2. Ububanzi Besiginali Yokufaka kwe-Bipolar Analogi Ngokuqhathaniswa Nokuzuza

Ithebula 3-3. Ububanzi Besiginali Yokufaka kwe-Analogi Engafani Ngokuphikisana Nokuzuza

Ukuthi uwaxhuma kanjani amasiginali we-AI ku-NI PCI-1200 kuncike ekutheni uwumisa kanjani umjikelezo we-NI PCI-1200 AI kanye nohlobo lomthombo wesiginali yokufaka. Ngokucushwa okuhlukile kwe-NI PCI-1200, ungasebenzisa i-NI PCI-1200 instrumentation. ampi-lifier ngezindlela ezahlukene. Umfanekiso 3-2 ubonisa umdwebo we-NI PCI-1200 instrumentation ampokokuphila.

Umfanekiso 3-2. I-NI PCI-1200 Instrumentation Ampokokuphila

I-NI PCI-1200 instrumentation ampi-lifier isebenzisa inzuzo, i-common-mode voltage ukwenqatshwa, kanye nokuvinjelwa kokufakwayo okuphezulu kumasiginali we-AI axhunywe ku-NI PCI-1200. Amasignali ahanjiswa kokokufaka okuhle nokubi kwesisetshenziswa ampi-lifier ngokusebenzisa ama-multiplexer okufakwayo kudivayisi. Izinsimbi ampI-lifier iguqula amasiginali wokufaka amabili abe isignali engumehluko phakathi kwamasiginali wokufaka amabili aphindaphindeka ngokuhlelwa kokuzuza kwe ampokokuphila. I- ampokukhishwa kwe-lifier voltage kubhekiselwa ku-NI PCI-1200 phansi. I-NI PCI-1200 ADC ikala lo mthamo wokukhiphayotage uma yenza ukuguqulwa kwe-A/D.

Wonke amasiginali kufanele abhekiswe phansi, kungaba kudivayisi engumthombo noma ku-NI PCI-1200. Uma unomthombo ontantayo, kufanele usebenzise uxhumano lokokufaka olunereferensi yaphansi ku-NI PCI-1200. Uma unomthombo osekelwe phansi, sebenzisa uxhumo lokokufaka olungabhekiselwe ku-NI PCI-1200.

Izinhlobo Zemithombo Yesiginali
Lapho ulungiselela imodi yokufaka ye-NI PCI-1200 futhi wenza uxhumo lwesignali, qala ngokunquma ukuthi umthombo wesignali uyantanta noma ubhekiselwe phansi. Lezi zinhlobo ezimbili zamasignali zichazwe ezigabeni ezilandelayo.

Imithombo Yesiginali Entantayo
Umthombo wesignali ontantayo awuxhunywanga nganoma iyiphi indlela ohlelweni lwephansi lesakhiwo kodwa unephoyinti elihlukile lenkomba yaphansi. Abanye exampImithombo yesignali entantayo iwumphumela wama-transformer, ama-thermocouples, amadivayisi anamandla ebhethri, ukuphuma kwe-optical isolator, kanye nokuhlukaniswa. ampabagibeli.

Bopha ireferensi yaphansi yesiginali entantayo endaweni ye-NI PCI-1200 AI ukuze usungule ireferensi yasendaweni noma esebhodini yesiginali. Uma kungenjalo, isignali yokufaka elinganisiwe iyahlukahluka noma ibonakala intanta. Ithuluzi noma idivayisi enikezela ngokukhiphayo okukodwa iwela esigabeni somthombo wesignali esintantayo.

Imithombo Yesiginali Ekhonjiwe Ephansi
Umthombo wesignali obhekiselwe phansi uxhunywe ngandlela thize endaweni yesistimu yokwakha futhi, ngakho-ke, usuvele uxhumeke endaweni evamile ngokuphathelene ne-NI PCI-1200, kucatshangwa ukuthi ikhompuyutha ixhunywe ohlelweni olufanayo lwamandla. Okuphumayo okungahlangene kwamathuluzi namadivayisi axhumeka kusistimu yamandla okwakha kuwela kulesi sigaba. Umehluko wamandla aphansi phakathi kwezinsimbi ezimbili ezixhunywe ohlelweni olufanayo lwamandla okwakha ngokuvamile uphakathi kuka-1 no-100 mV kodwa ungaba phezulu kakhulu uma amasekhethi okusabalalisa amandla exhunywe ngendlela engafanele. Imiyalo yokuxhumana elandela imithombo yesignali esekelwe phansi isusa lo mehluko ongaba khona phansi kusiginali elinganisiwe.

Qaphela Uma unika amandla kokubili i-NI PCI-1200 kanye nekhompyutha ngomthombo wamandla antantayo
(njengebhethri), uhlelo lungantanta maqondana nomhlabathi. Kulokhu, phatha konke
yemithombo yesignali njengemithombo entantayo.

Ukulungiswa Kokufaka
Ungakwazi ukumisa i-NI PCI-1200 ye-RSE, NRSE, noma imodi yokufaka ye-DIFF. Izigaba ezilandelayo zixoxa ngokusetshenziswa kwezilinganiso eziphela kanye nezihlukanisayo, kanye nokucatshangelwa kokulinganisa kokubili imithombo yesignali entantayo nebhekiselwe phansi. Ithebula 3-4 lifingqa ukulungiselelwa okokufaka okunconyiwe kwazo zombili izinhlobo zemithombo yesignali.

Ithebula 3-4. Isifinyezo Sokuxhumanisa Kokufakwayo kwe-Analogi

Ukucatshangelwa Kokuxhumanisa Okuhlukile (Ukucushwa kwe-DIFF)
Ukuxhumana okuhlukile yilokho lapho isignali ngayinye ye-NI PCI-1200 AI inesiginali yayo yereferensi noma indlela yokubuyisela isignali. Lokhu kuxhumana kuyatholakala uma ulungiselela i-NI PCI-1200 kumodi ye-DIFF. Isignali ngayinye yokokufaka iboshelwe kokokufaka okuphozithivu kwezinsimbi ampi-lifier, kanye nesignali yayo eyireferensi, noma ukubuyisela, kuboshelwe kokokufaka okungekuhle kwesisetshenziswa ampokokuphila.

Lapho ulungiselela i-NI PCI-1200 yokufaka i-DIFF, isignali ngayinye isebenzisa okokufaka okuphindwe kabili kwe-multiplexer-enye yesiginali kanye neyodwa yesignali yayo yereferensi.
Ngakho-ke, iziteshi ezine kuphela ze-AI ezitholakalayo uma usebenzisa imodi ye-DIFF.
Sebenzisa imodi yokufaka ye-DIFF uma kukhona noma yimiphi yezimo ezilandelayo:

• Amasignali okokufaka asezingeni eliphansi (ngaphansi kuka-1 V).
• Imikhondo exhuma amasiginali ku-NI PCI-1200 inkulu kuno-10 ft.
• Noma imaphi amasignali okokufaka adinga indawo ehlukile yereferensi yaphansi noma isignali yokubuyisela.
• Isignali ihola uhambo ezindaweni ezinomsindo.

Ukuxhumeka kwesignali okuhlukile kunciphisa umsindo futhi kukhuphule isignali yemodi evamile kanye nokwenqatshwa komsindo. Ngalokhu kuxhumana, amasiginali okokufaka angantanta ngaphakathi kwemikhawulo yemodi evamile yezinsimbi zokufakwayo ampokokuphila.

Ukuxhumana Okuhlukile Kwemithombo Yesiginali Egxilile
Umfanekiso 3-3 ubonisa indlela yokuxhuma umthombo wesignali okhonjwe phansi ku-NI PCI-1200 elungiselelwe imodi yokufaka ye-DIFF. Imiyalo yokumisa isesigabeni sokucushwa kwe-Analog I/O seSahluko 2, Ukufaka kanye Nokumisa i-NI PCI-1200.

Umfanekiso 3-3. Ukuxhumana Kokufaka Okuhlukile Kwemithombo Yesiginali Egxilile

Ngalolu hlobo lokuxhuma, i-instrumentation ampi-lifier yenqaba kokubili umsindo wemodi evamile kusiginali kanye nomehluko ongase ube phansi phakathi komthombo wesignali nomhlabathi we-NI PCI-1200 (oboniswe njenge-Vcm kumfanekiso 3-3).

Ukuxhumana Okuhlukile Kwemithombo Yesiginali Entantayo
Umfanekiso 3-4 ubonisa indlela yokuxhuma umthombo wesignali ontantayo ku-NI PCI-1200 elungiselelwe imodi yokufaka ye-DIFF. Imiyalo yokumisa isesigabeni sokucushwa kwe-Analog I/O seSahluko 2, Ukufaka kanye Nokumisa i-NI PCI-1200.

Umfanekiso 3-4. Ukuxhumana Kokufaka Okuhlukile Kwemithombo Entantayo

Ama-resistors angu-100 kΩ aboniswe kuMfanekiso 3-4 adala indlela yokubuyela emhlabathini ukuze uthole ama-bias currents we-instrumentation. ampi-lifier. Uma ingekho indlela yokubuyisela, i-instrumentation ampi-lifier bias currents ishaja amandla alahlekile, okuholela ekukhukhuleni okungalawuleki kanye nokugcwala okungenzeka endaweni. ampokokuphila.
Ngokuvamile, amanani asuka ku-10 kuye ku-100 kΩ asetshenziswa.

I-resistor ukusuka kokokufaka ngakunye ukuya phansi, njengoba kukhonjisiwe kuMfanekiso 3-4, inikeza izindlela zamanje zokubuyisela ezichemile zesignali yokokufaka ehlanganiswe ne-AC.

Uma isignali yokufaka ihlanganiswe ne-DC, udinga kuphela isixhasi esixhuma okokufaka kwesignali eyigethivu phansi. Lokhu kuxhumana akwehlisi ukuthinta okokufaka kwesiteshi se-AI.

Ukucatshangelwa Kokuxhumaniseka Okukodwa

Ukuxhumana okunomkhawulo yilokhu lapho zonke izimpawu ze-NI PCI-1200 AI zibhekiselwa endaweni eyodwa efanayo. Amasignali okokufaka aboshelwe kokokufaka okuhle kwensimbi ampi-lifier, futhi indawo evamile iboshelwe kokokufaka okungekuhle kwesisetshenziswa ampokokuphila.

Lapho i-NI PCI-1200 ihlelelwe imodi yokufaka ephethe isiphetho esisodwa (NRSE noma i-RSE), iziteshi eziyisishiyagalombili ze-AI ziyatholakala. Sebenzisa uxhumo lokokufaka olunomkhawulo owodwa lapho izimo ezilandelayo zihlangabezwa yiwo wonke amasiginali okokufaka:

• Amasignali okokufaka asezingeni eliphezulu (ngaphezu kuka-1 V).
• Imikhondo exhuma amasignali ku-NI PCI-1200 ingaphansi kuka-10 ft.
• Wonke amasignali okokufaka abelana ngesiginali yereferensi evamile (emthonjeni).

Uma noma iyiphi imibandela eyandulele ingafinyelelwanga, sebenzisa ukulungiselelwa kokufaka kwe-DIFF.

Ungakwazi ukumisa isofthiwe i-NI PCI-1200 ngezinhlobo ezimbili zokuxhuma okuphethwe kanye, ukucushwa kwe-RSE kanye nokucushwa kwe-NRSE. Sebenzisa ukucushwa kwe-RSE kwemithombo yesignali entantayo; kulesi simo, i-NI PCI-1200 inikeza iphuzu eliyisisekelo lenkomba yesiginali yangaphandle. Sebenzisa ukucushwa kwe-NRSE kwemithombo yesiginali ekhonjwe phansi; kulokhu, isignali yangaphandle inikeza indawo yayo yenkomba yendawo futhi i-NI PCI-1200 akufanele inikeze eyodwa.

Uxhumano Olunamkhawulo Owodwa Wemithombo Yesiginali Entantayo (Ukucushwa kweRSE) Umfanekiso 3-5 ubonisa indlela yokuxhuma umthombo wesignali ontantayo ku-NI PCI-1200 elungiselelwe imodi ye-RSE. Lungiselela i-NI PCI-1200 AI yokujikeleza okokufaka kwe-RSE ukuze wenze lezi zinhlobo zokuxhuma. Imiyalo yokumisa isesigabeni sokucushwa kwe-Analog I/O seSahluko 2, Ukufaka kanye Nokumisa i-NI PCI-1200.

Uxhumano Olunamkhawulo Owodwa Wemithombo Yesiginali Ephansi (Ukucushwa kwe-NRSE)

Uma ukala umthombo wesignali osekelwe phansi ngokucushwa okuphele kanye, lungiselela i-NI PCI-1200 ekucushweni kokufaka kwe-NRSE. Isignali ixhunywe kokokufaka okuhle kwe-NI PCI-1200 instrumentation ampi-lifier kanye nereferensi yendawo yesiginali yendawo ixhunywe kokokufaka okungalungile kwe-NI PCI-1200 instrumentation ampi-lifier. Ngakho-ke, xhuma indawo ephansi yesignali kuphinikhodi ye-AISENSE. Noma yimuphi umehluko ongaba khona phakathi komhlaba we-NI PCI-1200 kanye nomhlabathi wesignali ubonakala njengesignali yemodi evamile kukho kokubili okokufaka okuhle nokubi kwe-instrumentation. ampi-lifier ngakho-ke yenqatshwa yi- ampi-lifier. Ngakolunye uhlangothi, uma ukujikeleza okokufaka kwe-NI PCI-1200 kubhekiselwa phansi, njengasekucushweni kwe-RSE, lo mehluko emandleni omhlaba.
ivela njengephutha ku-voltage.

Umfanekiso 3-6 ubonisa indlela yokuxhuma umthombo wesignali osekelwe phansi ku-NI PCI-1200 elungiselelwe kumodi yokufaka ye-NRSE. Imiyalo yokumisa ifakiwe kusigaba sokucushwa kwe-Analog I/O seSahluko sesi-2, Ukufaka kanye Nokumisa i-NI PCI-1200.

Umfanekiso 3-6. Uxhumano Lokufaka Olunesiphetho Esodwa Semithombo Yesiginali Esekelwe

Ukucatshangelwa Kokwenqatshwa Kwesiginali Yemodi Evamile
Amanani 3-4 kanye ne-3-6 abonisa ukuxhumana kwemithombo yesignali osekuvele kubhekiselwe kuyo endaweni ethile ngokuphathelene ne-NI PCI-1200. Kulezi zimo, i-instrumentation ampi-lifier inganqaba noma iyiphi i-voltage okubangelwa umehluko ongaba khona phansi phakathi komthombo wesiginali kanye ne-NI PCI-1200. Ngaphezu kwalokho, ngokuxhumeka kokufakwayo okuhlukile, i-instrumentation ampI-lifier ingakwazi ukwenqaba ukulandwa komsindo wemodi evamile emithonjeni exhuma imithombo yesignali ku-NI PCI-1200.

Ububanzi bokufakwa kwemodi evamile ye-NI PCI-1200 instrumentation ampi-lifier ubukhulu besiginali yemodi evamile enkulu kakhulu engenqatshwa.

Ibanga lokufakwayo kwemodi evamile ye-NI PCI-1200 lincike kusayizi wesiginali yokufaka ehlukile, i-Vdiff = (Vin+) – (Vin–), kanye nesilungiselelo senzuzo ye-instrumentation. ampi-lifier. Kumodi ye-unipolar, ububanzi bokufaka okuhlukile bungu-0 kuya ku-10 V. Kumodi ye-bipolar, ububanzi bokufaka okuhlukile bungu-–5 ukuya ku-+5 V. Okokufaka kufanele kuhlale ngaphakathi kwebanga elingu-–5 ukuya ku-10 V kuzo zombili izindlela ze-bipolar ne-unipolar.

Izixhumanisi zesignali yokuphuma kwe-Analog
Izikhonkwane ezingu-10 kuye ku-12 kusixhumi se-I/O zingamaphini esignali e-AO.
Izikhonkwane 10 kanye ne-12 yi-DAC0OUT ne-DAC1OUT yamaphinikhodi. I-DAC0OUT
yi-voltagIsignali ye-e yesiteshi se-AO 0. I-DAC1OUT iyivolumutagIsignali ye-e yesiteshi se-AO 1.
I-Pin 11, AGND, iyindawo eyinkomba ephansi yeziteshi ze-AO ne-AI.
Amabanga alandelayo okukhiphayo ayatholakala:

• Okukhiphayo kwe-Bipolar: ±5 V1
• Okukhiphayo kwe-Unipolar: 0 kuya ku-10 V1

Umfanekiso 3-7 ubonisa indlela yokwenza uxhumano lwesignali ye-AO.

Umfanekiso 3-7. Izixhumanisi zesignali yokuphuma kwe-Analog

Ukuxhumana Kwesiginali ye-I/O
Izikhonkwane 13 ukuya ku-37 zesixhumi se-I/O zingamaphini esignali e-DIO. I-DIO ku-NI PCI-1200 isebenzisa isekethe ehlanganisiwe ye-82C55A. I-82C55A iyisixhumi esibonakalayo senjongo evamile equkethe amaphinikhodi angu-24 e-I/O ahlelekayo.
Lawa maphini amele izimbobo ezintathu ze-8-bit (PA, PB, ne-PC) ze-82C55A. Izikhonkwane 14 ukuya ku-21 zixhunywe emigqeni yedijithali PA<7..0> yembobo ye-DIO A. Izikhonkwane 22 kuya ku-29 zixhunywe emigqeni yedijithali PB<7..0> yembobo ye-DIO B. Izikhonkwane 30 kuya ku-37 zixhunyiwe emigqeni yedijithali i-PC<7..0> yembobo ye-DIO C. Iphinikhodi 13, i-DGND, iyiphinikhodi yedijithali yazo zonke izimbobo ezintathu ze-DIO. Bheka Isithasiselo A, Ukucaciswa, ukuthola isignali voltage kanye nokucaciswa kwamanje.

Ukucaciswa okulandelayo nezilinganiso kusebenza emigqeni ye-DIO.
Konke voltagimayelana ne-DGND.

Okokufaka Okunengqondo kanye Nemiphumela

Umfanekiso 3-8. Izixhumanisi ze-Digital I/O

Emfanekisweni 3-8, imbobo A ilungiselwe ukuphuma kwedijithali, futhi izimbobo B kanye no-C zilungiselelwe okokufaka kwedijithali. Izinhlelo zokusebenza zokufakwayo kwedijithali zihlanganisa ukwamukela

Amasignali e-TTL nezimo zedivayisi ezwayo zangaphandle, njengesimo sokushintsha kuMfanekiso 3-8. Izinhlelo zokusebenza zokuphuma kwedijithali zifaka phakathi ukuthumela amasignali e-TTL nokushayela amadivayisi angaphandle, njenge-LED kumfanekiso 3-8.

I-Port C Pin Connections
Amasiginali anikezwe imbobo C ancike kumodi lapho i-82C55A ihlelwe khona. Kumodi 0, imbobo C ibhekwa njengezimbobo ezimbili ze-4-bit I/O. Kumamodi 1 no-2, imbobo C isetshenziselwa amasiginali wokuxhawulana anezingxenye ezimbili noma ezintathu ze-I/O ezixutshwe phakathi. Ithebula 3-5 lifingqa izabelo zesignali zembobo C kumodi ngayinye elungisekayo.

Ithebula 3-5. Izabelo Zesiginali Yechweba

Izixhumanisi zamandla
Iphinikhodi engu-49 yesixhumi se-I/O inikezela nge-+5 V kusukela kumthombo wamandla wekhompyutha ngokusebenzisa i-fuse ezihlela kabusha. I-fuse isethwe kabusha ngokuzenzakalelayo phakathi nemizuzwana embalwa ngemva kokukhishwa kwesimo esidlulele. I-Pin 49 ibhekiselwa ku-DGND, futhi ungasebenzisa i-+5 V ukuze unike amandla ukujikeleza kwedijithali kwangaphandle.
• Isilinganiso samandla: 1 A ku-+4.65 kuya ku-+5.25 V

Isexwayiso Ungaxhumi ngokuqondile le phinikhodi yamandla engu-+5 V ku-analogi noma emhlabathini wedijithali nanoma iyiphi enye ivolumutage umthombo ku-NI PCI-1200 nanoma iyiphi enye idivayisi. Ukwenza kanjalo kungalimaza
I-NI PCI-1200 noma ikhompuyutha. I-NI ayinasibopho sanoma yimuphi umonakalo ngenxa yamandla angalungile
ukuxhumana.

I-DAQ kanye Nokuxhumana Kwesiginali Yesikhathi Senhloso Ejwayelekile
Izikhonkwane 38 kuya ku-48 zesixhumi se-I/O ziyizixhumanisi zamasignali e-TIO. I-NI PCI-1200 yesikhathi I/O isebenzisa amasekhethi amabili ahlanganisiwe we-82C53 counter/timer. Isekethe eyodwa, eqokwe ukuthi 82C53(A), isetshenziselwa kuphela isikhathi se-DAQ, kanti enye, 82C53(B), itholakalela ukusetshenziswa okuvamile. Sebenzisa izikhonkwane 38 kuye ku-40 bese uphina u-43 ukuze uphathe amasiginali angaphandle wesikhathi se-DAQ. Lezi
amasignali achazwe esigabeni se-DAQ Timing Connections. Izikhonkwane 41 kuya ku-48 ziphethe amasiginali wesikhathi esijwayelekile ukusuka ku-82C53(B). Lawa masignali achazwa esigabeni esithi General Purpose Timing Signal Connections.

I-DAQ Timing Connections
Isekethe ngayinye ye-82C53 counter/timer iqukethe izinto zokubala ezintathu. ICounter 0 ku-82C53(A) counter/timer, ebizwa ngokuthi A0, ithiampikhawunta ye-le-interval ekuguquleni okunesikhathi kwe-A/D. ICounter 1 ku-82C53(A) counter/timer, ebizwa ngokuthi i-A1, ithiample counter ekuguquleni kwe-A/D elawulwayo. Ngakho-ke, i-counter A1 imisa ukutholwa kwedatha ngemva kwenombolo echazwe ngaphambilini yama-sampLes. Lezi zibali azitholakali ukuthi zisetshenziswe nje jikelele.

Esikhundleni se-counter A0, ungasebenzisa i-EXTCONV* ekuguquleni isikhathi sangaphandle. Umfanekiso 3-9 ubonisa izimfuneko zesikhathi zokufakwayo kwe-EXTCONV*. Ukuguqulwa kwe-A/D kuqaliswa ngonqenqema oluwayo ku-EXTCONV*.

 

Umfanekiso 3-9. I-EXTCONV* Isikhathi Sesiginali

Isiginali yokulawula yangaphandle i-EXTTRIG ingaqala ukulandelana kwe-DAQ noma inqamule ukulandelana okuqhubekayo kwe-DAQ kuye ngemodi—i-posttrigger (POSTTRIG) noma i-pretrigger (PRETRIG). Lezi zindlela zikhethwa yisoftware.

Kumodi ye-POSTTRIG, i-EXTTRIG isebenza njengesibangeli sangaphandle esiqalisa ukulandelana kwe-DAQ. Uma usebenzisa i-counter A0 ukuya ku-skhathi sample izikhawu, unqenqema olukhuphukayo ku-EXTTRIG luqala i-counter A0 kanye nokulandelana kwe-DAQ. Uma usebenzisa i-EXTCONV* ukuya ku-skhathi sample izikhawu, ukutholwa kwedatha kunikwe amandla onqenqemeni olukhuphukayo lwe-EXTTRIG kulandelwa umphetho okhuphukayo ku-EXTCONV*. Ukuguqulwa kokuqala kwenzeka onqenqemeni olulandelayo oluwayo lwe-EXTCONV*. Ushintsho oluqhubekayo kulayini we-EXTTRIG alunawo umthelela kuze kube yilapho sekusungulwa ukulandelana okusha kwe-DAQ.

Umfanekiso 3-10 ubonisa ukulandelana okungenzeka kokulawulwa kwe-DAQ kusetshenziswa i-EXTCONV* ne-EXTTRIG. Umkhawulo okhuphukayo we-EXTCONV* ovumela ukuguqulwa kwangaphandle kufanele kwenzeke ubuncane obungu-50 ns ngemva konqenqema olukhuphukayo lwe-EXTTRIG. Ukuguqulwa kokuqala kwenzeka onqenqemeni olulandelayo oluwayo lwe-EXTCONV*.

Umfanekiso 3-10. Isikhathi se-Posttrigger DAQ

Kumodi ye-PRETRIG, i-EXTTRIG isebenza njengesignali yokuqalisa. Idatha itholwa ngaphambi nangemva kokuvela kwesiginali ye-EXTTRIG. Ukuguqulwa kwe-A/D kuyisofthiwe enikwe amandla, eqala ukusebenza kwe-DAQ.

Nokho, i-sampi-counter ayiqalwa kuze kube okokufaka kwe-EXTTRIG kuzwa unqenqema olukhuphukayo. Ukuguqulwa kuhlala kunikwe amandla kuze kube umhla ka-sampi-counter ibala ku-zero. Ungathola kufika ku-65,535 sampkancane ngemuva kwe-stop trigger. Inombolo ye-sampokutholwe ngaphambi kokuba isibangeli sikhawulelwe kuphela usayizi wesikhumbuzi sesikhumbuzi esitholakalayo ukuze kutholwe idatha.

Umfanekiso 3-11 ubonisa ukulandelana kwesikhathi kwe-DAQ kwe-pretrigger kusetshenziswa i-EXTTRIG ne-EXTCONV*. Umsebenzi we-DAQ uqalwe ngesofthiwe.

Qaphela I-sampI-le counter ihlelelwe ukuvumela ukuguqulwa okuhlanu ngemva kokukhuphuka
unqenqema kusiginali ye-EXTTRIG. Izinguquko ezengeziwe kulayini we-EXTTRIG azinawo umthelela
uze uqale ukulandelana okusha kwe-DAQ.

Umfanekiso 3-11. Pretrigger DAQ Timing

Ukuze uthole isikhawu sokutholwa kwedatha, isibali B1 sinquma isikhawu sokuskena. Esikhundleni sokusebenzisa ikhawunta B1, ungabeka ngaphandle isikhathi sokuskena nge-OUTB1. Uma ngaphandle isikhathi sample isikhawu, kufanele futhi ngaphandle isikhathi isikhawu scan. Umfanekiso 3-12 ubonisa i-example lokusebenza kwe-DAQ yokuskena isikhawu.

Isikhathi sokuskena kanye ne-sample isikhawu silinganiswa ngaphandle nge-OUTB1 kanye ne-EXTCONV*. Iziteshi 1 kanye no-0 zokuphindaphinda okokufaka ziskenwa kanye phakathi nesikhawu sokuskena ngasinye. Unqenqema lokuqala olukhuphukayo lwe-EXTCONV* kufanele lwenzeke okungenani okungu-50 ns ngemva konqenqema olukhuphukayo ku-OUTB1. Unqenqema lokuqala olukhuphukayo lwe-EXTCONV* ngemva konqenqema olukhuphukayo lwe-OUTB1 luvumela isignali yangaphakathi ye-GATE evumela ukuguqulwa ukuthi kwenzeke.

Ukuguqulwa kokuqala kube sekwenzeka onqenqemeni olulandelayo oluwayo lwe-EXTCONV*. Isiginali ye-GATE ikhubaza ukuguqulwa kuze kuphele isikhawu sokuskena ngemva kokuba iziteshi ezifunekayo ziskenwa. Bheka isigaba seNdlela Yokuthola Ukuskena Kwesikhawu seSahluko 4, Ithiyori Yokusebenza, ukuze uthole ulwazi olwengeziwe mayelana nokuskena isikhawu.

Umfanekiso 3-12. Isikhathi Sesiginali Sokuskena Isikhawu

Sebenzisa isiginali yokugcina yangaphandle, EXTUPDATE*, ukuze ulawule ngaphandle ukuvuselela ivolumu yokuphumayotage yama-DAC angu-12-bit kanye/noma ukukhiqiza ukuphazamiseka okunesikhathi sangaphandle. Kunezindlela ezimbili zokuvuselela, isibuyekezo esisheshayo nesibuyekezo esibambezelekile. Kumodi yokuvuselela ngokushesha, okukhiphayo kwe-analog kubuyekezwa ngokushesha nje lapho inani libhalwa ku-DAC. Uma ukhetha imodi yokubuyekeza ebambezelekile, inani libhalwa ku-DAC; nokho, i-DAC voltage ayibuyekezwa kuze kube yilapho kuzwakala izinga eliphansi kusignali ethi EXTUPDATE*. Ngaphezu kwalokho, uma unika amandla ukukhiqiza ukuphazamisa, ukuphazamisa kuyenziwa noma nini lapho kutholwa unqenqema olukhuphukayo kubhithi ye-EXTUPDATE*.

Ngakho-ke, ungenza isizukulwane se-waveform esinesikhathi sangaphandle, esishayelwa ngokuphazamiseka ku-NI PCI-1200. Ulayini othi EXTUPDATE* ungase ube nomsindo obangelwa ukushintsha imigqa futhi ungase udale ukuphazamiseka okungamanga. Kufanele wenze ububanzi be- EXTUPDATE* bube bufushane ngangokunokwenzeka, kodwa bube bukhulu kuno-50 ns.

Umfanekiso 3-13 ubonisa ukulandelana kwesikhathi kwesizukulwane se-waveform kusetshenziswa isignali ethi EXTUPDATE* kanye nemodi yokubuyekeza ebambezelekile. Ama-DAC abuyekezwa ngezinga eliphezulu kusiginali ye-DAC OUTPUT UPDATE, kulesi simo eqaliswa ileveli ephansi kulayini EXTUPDATE*. I-CNTINT isignali ephazamisa ikhompuyutha. Lokhu kuphazamiseka kukhiqizwa onqenqemeni olukhuphukayo lwe-EXTUPDATE*. I-DACWRT iyisiginali ebhala inani elisha ku-DAC.

Umfanekiso 3-13. EXTUPDATE* Isikhathi Sesignali Sokubuyekeza Okukhiphayo kwe-DAC
I-absolute max voltagIzilinganiso zokufaka ze-e EXTCONV*, EXTTRIG, OUTB1, kanye ne-EXTUPDATE* ngu-0.5 ukuya ku-5.5 V ngokuphathelene ne-DGND.

Ukuze uthole ulwazi olwengeziwe mayelana nezindlela ezihlukahlukene zokutholwa kwedatha nokuphuma kwe-analogi, bheka Isahluko 4, Ithiyori Yokusebenza, noma imibhalo ye-NI-DAQ.

Inhloso Ejwayelekile Yokuxhumana Kwesiginali Yesikhathi
Izinhloso ezijwayelekile zezimpawu zesikhathi zihlanganisa amasiginali we-GATE, CLK, kanye ne-OUT wezibali ezintathu ze-82C53(B). Ikhawunta/izibali zesikhathi ezingu-82C53 zingasetshenziselwa izinhlelo zokusebenza ezijwayelekile ezifana nokukhiqiza i-pulse kanye ne-square wave, ukubala umcimbi, nobubanzi be-pulse-width, ukuphela kwesikhathi, nokulinganisa imvamisa. Kulezi zinhlelo zokusebenza, amasiginali we-CLK kanye ne-GATE kusixhumi se-I/O alawula izinto zokubala. Okuhlukile yi-counter B0, enewashi langaphakathi elingu-2 MHz.

Ukuze wenze ukukhiqizwa kwe-pulse kanye ne-square wave, hlela ikhawunta ukuze ukhiqize isignali yesikhathi ephinikhodi yokukhiphayo ye-OUT. Ukuze wenze ukubala umcimbi, hlela ikhawunta ukuze ubale imiphetho ekhuphukayo noma eyehlayo esetshenziswa kunoma yikuphi okokufaka kwe-82C53 CLK, bese ufunda inani eliphikisayo ukuze unqume inani lemiphetho eyenzekile. Ungavumela noma ukhubaze ukusebenza kokubala ngokulawula okokufaka kwesango. Umfanekiso 3-14 ubonisa ukuxhumana komsebenzi ojwayelekile wokubala umcimbi lapho iswishi isetshenziselwa ukuvula nokuvala ikhawunta.

Umfanekiso 3-14. Isicelo sokubala umcimbi nge-External Switch Gating

Isilinganiso sobubanzi be-Pulse-width senziwa nge-level gating. I-pulse ofuna ukuyikala isetshenziswa kokokufaka kwekhawunta GATE. Ikhawunta ilayishwe ngesibalo esaziwayo futhi ihlelwe ukuthi ibale phansi kuyilapho isignali kokokufaka kwe-GATE iphezulu. Ububanzi be-pulse bulingana nomehluko wekhawunta (inani elilayishiwe susa inani elifundiwe) liphindaphindwe yinkathi ye-CLK.

Yenza ukulinganisa kokudlula isikhathi ngokuhlela isibali esizofakwa emaphethelweni. Unqenqema lusetshenziswa kokokufaka kwe-GATE ukuze kuqalwe isibali. Hlela isibali ukuze uqale ukubala ngemva kokuthola umphetho osuka phansi ukuya phezulu. Isikhathi esidlulayo kusukela ekutholeni unqenqema silingana nomehluko wenani eliphikisayo (inani elilayishiwe susa inani elifundiwe) eliphindaphindwe yinkathi ye-CLK.

Ukuze wenze ukulinganisa imvamisa, hlela ikhawunta ukuthi ifakwe ileveli futhi ubale inani lemiphetho ewayo kusiginali esetshenziswe kokokufaka kwe-CLK. Isignali yesango esetshenziswe kokokufaka kwekhawunta ye-GATE ingeyesikhathi esaziwayo. Kulesi simo, hlela ikhawunta ukubala imiphetho ewayo kokokufaka kwe-CLK ngenkathi isango lisetshenziswa. Imvamisa yesiginali yokufaka bese ilingana nenani lokubala elihlukaniswe yinkathi yesango. Umfanekiso 3-15 ubonisa ukuxhumana kohlelo lokusebenza lokulinganisa imvamisa. Ungasebenzisa futhi ikhawunta yesibili ukuze ukhiqize isignali yesango kulolu hlelo lokusebenza. Uma usebenzisa ikhawunta yesibili, kufanele uguqule isignali ngaphandle.

Umfanekiso 3-15. Isicelo Sokukala Imvamisa

Izimpawu ze-GATE, CLK, kanye ne-OUT zezibali ze-B1 ne-B2 ziyatholakala kusixhumi se-I/O. Izikhonkwane ze-GATE kanye ne-CLK zidonswa ngaphakathi kuze kufike ku-+5 V nge-resistor engu-100 kΩ. Bheka Isithasiselo A, Ukucaciswa, ukuthola isignali voltage kanye nokucaciswa kwamanje.

Umfanekiso 3-16 ubonisa izidingo zesikhathi ze-GATE kanye nezimpawu zokufaka ze-CLK kanye nemininingwane yesikhathi yezimpawu zokuphumayo ze-82C53 OUT.

Umfanekiso 3-16. Izimpawu Zesikhathi Senhloso Ejwayelekile

Izimpawu ze-GATE ne-OUT kuMfanekiso 3-16 zibhekiselwa emaphethelweni akhuphukayo wesiginali ye-CLK.

Imininingwane Yesikhathi
Sebenzisa imigqa yokuxhawula i-STB* ne-IBF ukuze uvumelanise ukudlulisa okokufaka.
Sebenzisa imigqa yokuxhawula i-OBF* ne-ACK* ukuze uvumelanise ukudluliswa kokuphumayo.
Amasignali alandelayo asetshenziswa emidwebeni yemodi yesikhathi.

Ithebula 3-6. Amagama Esignali Asetshenziswa Emidwebeni Yesikhathi

Isikhathi Sokufaka Imodi 1
Izicaciso zesikhathi zokudlulisa okokufaka kwimodi 1 zimi kanje.

Umfanekiso 3-17. Izicaciso Zesikhathi Semodi 1 Yokudluliswa Kokufaka

Imodi 1 Isikhathi Sokukhipha
Izicaciso zesikhathi zokudlulisa okukhiphayo kumodi 1 zimi kanje.

Umfanekiso 3-18. Izicaciso Zesikhathi Semodi 1 Yokudluliswa Kokukhiphayo

Imodi 2 Isikhathi se-Bidirectional
Ukucaciswa kwesikhathi sokudluliswa kwe-bidirectional kumodi 2 imi kanje.

Umfanekiso 3-19. Izicaciso Zesikhathi Semodi 2 Yokudluliswa Kwezindawo Ezikabili

 

4. Ithiyori Yokusebenza

Lesi sahluko sichaza ukusebenza kweyunithi ngayinye esebenzayo ye-NI PCI-1200.

Isebenza Ngaphezuluview
Umdwebo webhulokhi kuMfanekiso 4-1 ubonisa ukusebenza okungaphezuluview kwedivayisi.

Umfanekiso 4-1. I-NI PCI-1200 Block Diagram

Izingxenye ezinkulu ze-NI PCI-1200 zimi kanje:
• I-MITE PCI interface circuitry
• Ukujikeleza kwe-TIO
• Ukujikeleza kwe-AI
• Ukujikeleza kwe-AO

• Ukujikeleza kwe-DIO
• I-Calibration circuitry

Idatha yangaphakathi namabhasi okulawula axhumanisa izingxenye. Okunye kwalesi sahluko kuchaza ithiyori yokusebenza kwengxenye ngayinye ye-NI PCI-1200. Ukulinganisa kokujikeleza kuxoxwa ngakho eSahlukweni 5, Ukulinganiswa.

I-PCI Interface Circuitry
I-NI PCI-1200 interface circuitry iqukethe i-MITE PCI interface chip kanye ne-digital control logic chip. I-chip interface ye-MITE PCI ihlinzeka ngendlela yokuthi i-NI PCI-1200 ixhumane nebhasi le-PCI. Kuyi-Application Specific Integrated Circuit (ASIC) eklanywe i-NI ngokuqondile ukuze kutholwe idatha. I-digital control logic chip ixhuma i-MITE PCI interface chip nayo yonke idivayisi. I-NI PCI-1200 ihambisana ngokugcwele ne-PCI Local Bus Specification, Revision 2.2. Ngakho-ke, ikheli lememori eyisisekelo nezinga lokuphazamisa ledivayisi kugcinwa ngaphakathi kwe-chip ye-MITE PCI ivuliwe. Awudingi ukusetha noma yikuphi ukushintshwa noma ama-jumpers. Ibhasi le-PCI liyakwazi ukudlulisa okungu-8-bit, 16-bit, noma 32-bit, kodwa i-NI PCI-1200 isebenzisa kuphela ukudluliselwa okungu-8-bit.

Umfanekiso 4-2. I-PCI Interface Circuitry

I-NI PCI-1200 idala ukuphazamiseka ezimeni ezinhlanu ezilandelayo (ngasinye salezi ziphazamiso sinikwa amandla futhi siyasulwa):
• Uma ukuguqulwa okukodwa kwe-A/D kungafundwa kumemori ye-A/D FIFO
• Uma i-A/D FIFO isigcwele uhhafu
• Uma umsebenzi we-DAQ uqeda, okuhlanganisa lapho kwenzeka iphutha le-OVERFLOW noma le-OVERRUN
• Uma isifunda se-DIO sidala ukuphazamiseka
• Uma isignali yonqenqema olukhuphukayo itholwa kusignali yokuvuselela ye-DAC

Isikhathi
I-NI PCI-1200 isebenzisa amasekhethi amabili ahlanganisiwe we-82C53 counter/timer ku-DAQ yangaphakathi nesikhathi se-DAC kanye nenhloso evamile yemisebenzi yesikhathi ye-I/O. Umfanekiso 4-3 ubonisa umdwebo webhulokhi wawo womabili amaqembu wokujikeleza kwesikhathi (amaqembu amakhawunta A no-B).

Umfanekiso 4-3. Isikhathi Circuitry

I-82C53 ngayinye iqukethe izinto zokubala/izikhathi ezintathu ezizimele ze-16-bit kanye nerejista yemodi engu-8-bit eyodwa. Ikhawunta ngayinye inephinikhodi yokufaka ye-CLK, iphinikhodi ye-GATE, nephinikhodi ye-OUT. Ungahlela zonke izinto zokubala/izikhathi eziyisithupha ukuthi zisebenze ngezindlela ezimbalwa zesikhathi.

Iqembu lokuqala lezibali/izikhathi, iqembu A, lihlanganisa u-A0, A1, no-A2. Ungasebenzisa lezi zibali ezintathu ku-DAQ yangaphakathi nesikhathi se-DAC, noma ungasebenzisa amasiginali esikhathi angaphandle amathathu, EXTCONV*, EXTTRIG, kanye ne-EXTUPDATE*, ukuze uthole isikhathi se-DAQ ne-DAC.

Iqembu lesibili lezibali/izikhathi, iqembu B, lihlanganisa u-B0, B1, no-B2.

Ungasebenzisa izinto zokubala u-B0 ne-B1 ku-DAQ yangaphakathi nesikhathi se-DAC, noma ungasebenzisa isignali yesikhathi yangaphandle i-CLKB1 ukuze uthole isikhathi se-AI. Uma ungasebenzisi izinto zokubala B0 kanye ne-B1 ngesikhathi sangaphakathi, ungasebenzisa lezi zibali njengesibali/izikhathi ezijwayelekile. I-Counter B2 ibekelwe ukusetshenziswa kwangaphandle njengendawo yokubala/isibali sesikhathi esijwayelekile.

Ukuze uthole incazelo eningiliziwe yekhawunta yeqembu A kanye nokubala okungu-B0 kanye ne-B1, bheka isigaba Sokokufaka Kwe-Analog ne-Analog Output.

Okokufaka kwe-Analog
I-NI PCI-1200 ineziteshi eziyisishiyagalombili zokufakwa kwe-analog nge
inzuzo ehlelekayo yesoftware kanye nokuguqulwa kwe-12-bit A/D. I-NI PCI-1200 futhi iqukethe ukujikeleza kwesikhathi kwe-DAQ kokuzenzakalela kwesikhathi sokuguqulwa okuningi kwe-A/D futhi kufaka phakathi izinketho ezithuthukisiwe ezifana nokucupha kwangaphandle, i-gating, kanye newashi. Umfanekiso 4-4 ubonisa umdwebo webhlokhi wesifunda se-AI.

Umfanekiso 4-4. I-Analog Input Circuitry

I-Analog Input Circuitry
Umjikelezo we-AI uqukethe ama-multiplexer okufakwayo e-AI, i-multiplexer (mux) counter/gain select circuitry, inzuzo ehlelekayo ampi-lifier, i-12-bit ADC, kanye nenkumbulo ye-FIFO enwetshiwe engu-16-bit. I-multiplexer eyodwa yokufaka ineziteshi eziyisishiyagalombili ze-AI (iziteshi 0 kuya ku-7). Enye i-multiplexer ixhunywe kuziteshi 1, 3, 5, no-7 ngemodi yokuhlukanisa. Ama-multiplexer okokufaka ahlinzeka ngokugcwala kokufakiwetagUkuvikelwa kwe-e okungu-±35 V kuvuliwe futhi ±25 V kuvaliwe.

Izibali ze-mux zilawula okokufaka okuphindaphindayo. I-NI PCI-1200 ingakwazi ukuthola idatha yesiteshi esisodwa noma ukutholwa kwedatha eskenwe ngeziteshi eziningi. Lezi zindlela ezimbili zikhethwa yi-software. Ukuze uthole idatha yesiteshi esisodwa, khetha isiteshi futhi uzuze ngaphambi kokuqala ukutholwa kwedatha. Lezi zilungiselelo zokuzuzisa kanye ne-multiplexer zihlala zingashintshi phakathi nayo yonke inqubo ye-DAQ. Ukuze uthole idatha eskeniwe ngeziteshi eziningi, khetha isiteshi esinezinombolo eziphezulu futhi uzuze ngaphambi kokuqala ukutholwa kwedatha. Bese ikhawunta ye-mux incipha isuka esiteshini enenombolo ephezulu iye ku-0 bese iphinda inqubo. Ngakho, ungakwazi ukuskena iziteshi ezimbili kuya kweziyisishiyagalombili. Qaphela ukuthi usebenzisa ukulungiselelwa okufanayo kwenzuzo kuzo zonke iziteshi ngokulandelana kokuskena.

Inzuzo ehlelekayo ampI-lifier isebenzisa inzuzo kusiginali yokokufaka, okuvumela isignali ye-analog yokokufaka ibe ampwakhululwa ngaphambi kokuba sampiholwa futhi iguqulwe, ngaleyo ndlela ikhulise ukulinganiswa nokunemba. Izinsimbi ampInzuzo ye-lifier ikhethwa yisoftware. I-NI PCI-1200 inikeza izinzuzo zokungu-1, 2, 5, 10, 20, 50, kanye ne-100.

I-dither circuitry, uma inikwe amandla, yengeza cishe ama-LSBrms angu-0.5 omsindo omhlophe we-Gaussian kusiginali ezoguqulelwa ku-ADC. Lokhu okungeziwe kuyasiza ezinhlelweni ezibandakanya isilinganiso, ukukhulisa ukulungiswa kwe-NI PCI-1200 kuya kumabhithi angaphezu kuka-12, njengasekulinganisweni. Kulezi zinhlelo zokusebenza, ezivame ukuba imvamisa ephansi ngokwemvelo, ukushintshwa komsindo kuyehla futhi ukuhluka komugqa kuyathuthukiswa ngokungezwa kwe-dither. Kuzinhlelo zokusebenza ezinesivinini esikhulu esingu-12-bit ezingabandakanyi isilinganiso, kufanele ukhubaze i-dither ngoba yengeza umsindo kuphela.

Uma uthatha izilinganiso ze-DC, njengalapho ulinganisa idivayisi, vumela i-dither futhi ulinganise amaphuzu angu-1,000 ukuze ufunde okukodwa. Le nqubo isusa imiphumela ye-12-bit quantization futhi inciphisa umsindo wokulinganisa, okuholela ekulungisweni okuthuthukisiwe. I-Dither, noma umsindo omhlophe owengeziwe, unomthelela wokuphoqelela umsindo wokulinganisa ukuthi ube yiziro-okusho okungahleliwe okuguquguqukayo kunokuba umsebenzi onqumayo wokufakwayo.

I-NI PCI-1200 isebenzisa i-12-bit elandelanayo yokulinganisa i-ADC. Ukulungiswa kwe-12-bit kwekhawunta kuyivumela ukuthi ixazulule ububanzi bayo bokufaka kuzinyathelo ezihlukene ezingu-4,095. I-ADC inobubanzi bokufaka obungu-±5 V kanye no-0 kuya ku-10 V. Uma ukuguqulwa kwe-A/D sekuqediwe, i-ADC iwashi umphumela ube yi-A/D FIFO. I-A/D FIFO ingamabhithi angu-16 ububanzi namagama angu-4,096 ukujula. Le FIFO isebenza njengesivimbeli ku-ADC. I-A/D FIFO ingaqoqa amanani okuguqulwa afika ku-4,096 A/D ngaphambi kokulahleka noma yiluphi ulwazi, ngaleyo ndlela ivumele isofthiwe isikhathi esithile ukuthi ibambe ihadiwe. Uma ugcina amanani angaphezu kuka-4,096 ku-A/D FIFO ngaphambi kokufunda kuyo, kuvela isimo sephutha esibizwa ngokuthi ukuchichima kwe-A/D FIFO, futhi ulahlekelwa ulwazi lokuguqulwa lwe-A/D.

Okukhiphayo kwe-ADC kungahunyushwa njengokuhambisana okuqondile kanambambili noma okubili, kuye ngokuthi yiluphi uhlelo lokubhala amakhodi olukhethayo. I-Straight kanambambili isikimu sokufaka amakhodi esinconyiwe semodi yokufaka ye-unipolar. Ngalolu hlelo, idatha ye-ADC ichazwa njengenombolo kanambambili eqondile engu-12-bit enobubanzi obusuka ku-0 ukuya ku-+4,095. Ukuphelelisa okubili kuwuhlelo lokufaka amakhodi olunconyiwe lwemodi yokufaka ye-bipolar. Ngalolu hlelo, idatha ye-ADC ihunyushwa njengenombolo ehambisanayo ye-12-bit enobubanzi obungu--2,048 kuya ku-+2,047. Okukhiphayo kwe-ADC bese kusayinwa kunwetshwe kumabhithi ayi-16, okubangela ukuthi kungezwe u-0 oholayo noma u-F (hex) oholayo, kuye ngokubhala ikhodi nophawu. Ngakho, amanani edatha afundwa ku-FIFO angamabhithi ayi-16 ububanzi.

Imisebenzi ye-DAQ
Leli bhukwana lisebenzisa igama lomsebenzi wokutholwa kwedatha (elifushanisiwe njengomsebenzi we-DAQ) ukuze libhekisele ekulandeleni kwezinguqulo ze-A/D ezinesikhathi. I-NI PCI-1200 yenza imisebenzi ye-DAQ kwenye yezindlela ezintathu: imodi yokuthola elawulwayo, imodi yokutholwa egijima mahhala, kanye nemodi yokutholwa kwesikhawu sokuskena. I-NI PCI-1200 yenza kokubili ukutholwa kwedatha yesiteshi esisodwa kanye nesiteshi esiningi.

Isifunda sesikhathi se-DAQ siqukethe amawashi ahlukahlukene nezimpawu zesikhathi ezilawula ukusebenza kwe-DAQ. Isikhathi se-DAQ siqukethe amasiginali aqala ukusebenza kwe-DAQ, isikhathi sokuguqulwa kwe-A/D ngakunye, amasango okusebenza kwe-DAQ, futhi akhiqize amawashi okuskena. Ukusebenza kwe-DAQ kungahle kubekwe isikhathi ngesekhethi yesikhathi noma ngamasiginali akhiqizwe ngaphandle. Lezi zindlela ezimbili zesikhathi ziyi-software elungisekayo.

Imisebenzi ye-DAQ iqalwa ngaphandle nge-EXTTRIG noma ngokulawulwa kwesoftware. Umsebenzi we-DAQ unqanyulwa ngaphakathi ngekhawunta A1 ye-82C53 (A) counter/timer circuitry, ebala inani eliphelele lama-s.ampokuthathwe ngesikhathi sokusebenza okulawulwayo, noma ngokulawulwa kwesoftware ekusebenzeni okuqhutshwa mahhala.

Imodi Yokuthola Elawulwayo
I-NI PCI-1200 isebenzisa izinto zokubala ezimbili, i-counter A0 ne-counter A1, ukuze yenze imisebenzi ye-DAQ kumodi yokutholwa elawulwayo. I-Counter A0 ibala sample izikhawu, kuyilapho counter A1 ibala sampLes. Ekusebenzeni kwe-DAQ yemodi yokutholwa elawulwayo, idivayisi yenza inombolo ethile yokuguqulwa, bese i-hardware ivala ukuguqulwa. I-Counter A0 ikhiqiza ama-conversion pulses, kanye ne-counter A1 gates off counter A0 ngemva kokuba isibalo esihleliwe sesiphelelwe yisikhathi. Inani lokuguqulwa kumsebenzi we-DAQ wemodi yokutholwa elawulwayo likhawulelwe ukubala okungu-16-bit (ukuguqulwa okungu-65,535).

Imodi yokutholwa kokuskena isikhawu
I-NI PCI-1200 isebenzisa izinto zokubala ezimbili zokuthola idatha yokuskena isikhawu. I-Counter B1 isetshenziselwa ukubeka isikhathi isikhawu sokuskena. I-Counter A0 izikhathi ze-sample isikhawu. Emisebenzini yokuskena ye-AI yesikhawu, ukulandelana kokuskena kwenziwa ngezikhathi ezivamile, ezicacisiwe. Inani lesikhathi esidlulayo phakathi kokuskena okulandelanayo phakathi kokulandelana ngu-sample interval. Inani lesikhathi elidlulayo phakathi kokulandelana kokuskena okulandelanayo isikhathi sokuskena. IlebhuVIEW, I-LabWindows/CVI, enye isofthiwe yohlelo lokusebenza, kanye ne-NI-DAQ isekela kuphela ukuskena kwesikhawu seziteshi eziningi.

Ngoba ukuskena kwesikhawu kukuvumela ukuthi ucacise ukuthi ukulandelana kokuskena kaningi kwenziwa kanjani, kuyasiza ezinhlelweni odinga ukus.ample idatha ngezikhathi ezivamile kodwa ezingavamile. Okwesiboneloample, kwe sample channel 1, linda 12 μs, bese u-sample channel 0; futhi uma ufuna ukuphinda le nqubo njalo ngo-65 ms, kufanele uchaze ukusebenza ngale ndlela elandelayo:

• Qala isiteshi: ch1 (okunikeza ukulandelana kokuskena kwe-“ch1, ch0”)
• Sample isikhawu: 12 μs
• Isikhawu sokuskena: 65 ms

Isiteshi sokuqala ngeke sibe ngu-sampwahola kwaze kwaba u-s oneample isikhawu kusukela ekushayeni kwesikhawu sokuskena. Njengoba isikhathi sokuguqulwa se-A/D singu-10 μs, u-sampIsikhawu se-le kumele okungenani sibe yileli nani ukuze kuqinisekiswe ukusebenza okufanele.

Ukutholwa Kwedatha Yesiteshi Esisodwa

I-NI PCI-1200 yenza umsebenzi we-AI wesiteshi esisodwa ngokwenza ukuguqulwa kwe-A/D esiteshini se-AI esicacisiwe njalo ngemizuzwana.ample isikhawu.

I-sampI-le interval inani lesikhathi esidlulayo phakathi kokuguqulwa okulandelanayo kwe-A/D. I-sampI-le interval ilawulwa ngaphandle nge-EXTCONV* noma ngaphakathi ngekhawunta engu-A0 yomjikelezo wesikhathi. Ukuze ucacise ukusebenza kwe-AI yesiteshi esisodwa, khetha isiteshi se-AI kanye nesilungiselelo senzuzo saleso siteshi.

Ukutholwa Kwedatha Eskenwe Ngeziteshi Eziningi
I-NI PCI-1200 yenza umsebenzi we-DAQ weziteshi eziningi ngokuskena ngokuphindaphindiwe ukulandelana kweziteshi ze-AI (inzuzo efanayo isetshenziswa esiteshini ngasinye ngokulandelana). Iziteshi ziskenwa ngokuncipha ngokulandelana okulandelanayo; isiteshi esinenombolo ephezulu yishaneli yokuqala, kanti isiteshi esingu-0 siyisiteshi sokugcina ngokulandelana.

Phakathi nokulandelana kokuskena ngakunye, i-NI PCI-1200 iskena isiteshi sokuqala (isiteshi esinenombolo ephezulu) kuqala, bese kulandela isiteshi esinenombolo ephezulu kakhulu, njalo njalo ize ihlole isiteshi esingu-0. I-NI PCI-1200 iphinda lokhu chungechunge lokuskena kuze kube yilapho umsebenzi we-DAQ unqanyuliwe.

Okwesiboneloample, uma isiteshi 3 sicaciswe njengesiteshi sokuqala, ukulandelana kokuskena kumi kanje:
ch3, ch2, ch1, ch0, ch3, ch2, ch1, ch0, ch3, ch2, ...

Ukuze ucacise ukulandelana kokuskena kokusebenza kwe-AI eskeniwe yeziteshi eziningi, khetha isiteshi sokuqala sokulandelana kokuskena.

Amanani we-DAQ
Izilinganiso eziphezulu ze-DAQ (inombolo ye-sampngaphansi ngomzuzwana) kunqunywa isikhathi sokuguqulwa se-ADC kanye ne-sampisikhathi sokutholwa kanye nokubamba. Ngesikhathi sokuskena kwama-multichannel, amanani e-DAQ aphinde akhawulelwe isikhathi sokusetha sokuphindaphinda okokufaka kanye nenzuzo ehlelekayo. ampi-lifier. Ngemuva kokuthi ama-multiplexer okokufaka ashintshiwe, i ampi-lifier kufanele ivunyelwe ukuthi ihlale enanini lesignali entsha ibe phakathi kokunemba kwe-12-bit ngaphambi kokuthi wenze ukuguqulwa kwe-A/D, noma ukunemba kwe-12-bit ngeke kuzuzwe. Isikhathi sokukhokha siwumsebenzi wenzuzo ekhethiwe.

Ithebula 4-1 libonisa isikhathi sokukhokha esinconyiwe sesethingi ngayinye yenzuzo ngesikhathi sokuskena iziteshi eziningi. Ithebula 4-2 libonisa amanani aphezulu anconyiwe e-DAQ kukho kokubili ukutholwa kwedatha yesiteshi esisodwa kanye neziteshi eziningi. Ngokuskena kwesiteshi esisodwa, leli zinga linqunyelwe kuphela isikhathi sokuguqulwa se-ADC kanye ne-sampisikhathi sokutholwa se-le-and-hold, esicaciswe ku-10 μs. Ukuze uthole idatha yeziteshi eziningi, ukubheka amazinga e-DAQ kuThebula 4-2 kuqinisekisa ukulungiswa kwe-12-bit. Ihadiwe iyakwazi ukuskena okuningi ngamanani aphezulu kunalawo asohlwini lweThebula 4-2, kodwa ukulungiswa kwe-12-bit akuqinisekisiwe.

Izilinganiso ezinconyiwe ze-DAQ kuThebula 4-2 zithatha lokho voltagAmaleveli e-e kuwo wonke amashaneli afakwe ngokulandelana kweskeni angaphakathi kwebanga ngenzuzo enikeziwe futhi aqhutshwa imithombo engenamandla amancane.

I-Analog Output
I-NI PCI-1200 ineziteshi ezimbili zokuphuma kwe-12-bit D/A. Isiteshi ngasinye se-AO singahlinzeka ngokuphuma kwe-unipolar noma kwe-bipolar. I-NI PCI-1200 futhi iqukethe ukujikeleza kwesikhathi kokukhiqizwa kwe-waveform okunesikhathi ngaphandle noma ngaphakathi. Umfanekiso 4-5 ubonisa ukujikeleza kwe-AO.

Umfanekiso 4-5. I-Analog Output Circuitry

I-Analog Output Circuitry
Isiteshi ngasinye se-AO siqukethe i-DAC engu-12-bit. I-DAC esiteshini ngasinye se-AO ikhiqiza ivolumutage ngokulingana nereferensi yangaphakathi engu-10 V ephindwe ngekhodi yedijithali engu-12-bit elayishwe ku-DAC. Umqulutagi-e ephuma kuma-DAC amabili iyatholakala ku-DAC0OUT kanye nezikhonkwane ze-DAC1OUT.

Ungahlela isiteshi se-DAC ngasinye ngevolumu ye-unipolartage okukhiphayo noma i-bipolar voltage-output range. Ukukhishwa kwe-unipolar kunikeza ivolumu yokuphumayotage ububanzi obungu-0.0000 ukuya ku-+9.9976 V. Ukukhishwa kwe-bipolar kunikeza ivolumu yokuphumayotagi-e ibanga -5.0000 ukuya ku-+4.9976 V. Ngokukhiphayo kwe-unipolar, okukhiphayo okungu-0.0000 V kuhambisana nekhodi yedijithali yegama elithi 0. Ngokukhiphayo kwe-bipolar, -5.0000 V okukhiphayo kuhambisana nekhodi yedijithali yegama elithi F800 hex. I-LSB eyodwa ingu-voltagi-e increment ehambisana noshintsho lwe-LSB egameni lekhodi yedijithali. Kuyo yomibili imiphumela:

Isikhathi se-DAC
Kunezindlela ezimbili ongabuyekeza ngazo i-DAC voltages. Kumodi yokuvuselela ngokushesha, i-DAC output voltage ibuyekezwa ngokushesha nje lapho ubhalela i-DAC ehambisanayo. Kumodi yokuvuselela ebambezelekile, i-DAC output voltagi-e ayishintshi kuze kube yilapho kutholwa izinga eliphansi ukusuka ku-counter A2 yesekhethi yesikhathi noma EXTUPDATE*. Le modi iwusizo ekwenzeni i-waveform. Lezi zindlela ezimbili zikhethwa yi-software.

I-I/O yedijithali
Isekethe ye-DIO inomjikelezo ohlanganisiwe we-82C55A. I-82C55A iyinjongo evamile ehlelekayo ye-peripheral interface equkethe amaphinikhodi angu-24 e-I/O ahlelekayo. Lawa maphini amele izimbobo ezintathu ze-8-bit I/O (A, B, kanye no-C) ze-82C55A, kanye ne-PA<0..7>, PB<0..7>, ne-PC<0..7 > kusixhumi se-NI PCI-1200 I/O. Umfanekiso 4-6 ubonisa ukujikeleza kwe-DIO.

Umfanekiso 4-6. I-Digital I/O Circuitry

Womathathu amachweba aku-82C55A ahambisana ne-TTL. Uma inikwe amandla, izimbobo zokuphuma kwedijithali ziyakwazi ukucwilisa u-2.5 mA wamanje kanye nokuthola u-2.5 mA wamanje kumugqa ngamunye we-DIO. Uma izimbobo zinganikiwe amandla, imigqa ye-DIO isebenza njengokungenayo kokuphazamiseka okuphezulu.

 

5. Ukulinganisa

Lesi sahluko sidingida izinqubo zokulinganisa zomjikelezo we-NI PCI-1200 we-analog I/O. Nokho, i-NI PCI-1200 ilinganiselwe ngokwefekthri, futhi i-NI ingakwazi ukulinganisa kabusha idivayisi uma kudingeka. Ukuze ulondoloze ukunemba kwe-12-bit kwesekhethi ye-NI PCI-1200 AI ne-AO, lungisa kabusha izikhawu zezinyanga eziyisithupha.

Kunezindlela ezine zokwenza ukulinganisa.

• Uma une-LabVIEW, sebenzisa i-1200 Calibrate VI. Le VI itholakala e
iphalethi yokulinganisa nokumisa.
• Uma une-LabWindows/CVI, sebenzisa umsebenzi we-Calibrate_1200.
• Uma ungenayo ilebhuVIEW noma i-LabWindows/CVI, sebenzisa umsebenzi we-NI-DAQ Calibrate_1200.
• Sebenzisa okwakho izinga lokubhalisa ubhalele ama-DAC wokulinganisa kanye ne-EEPROM. (Sebenzisa le ndlela kuphela uma i-NI-DAQ ingasekeli uhlelo lwakho lokusebenza.)

Ukuze ulinganise usebenzisa ukubhala kwezinga lerejista, udinga ukusebenzisa i-NI PCI-1200
Bhalisa-Level Programmer Manual.

I-NI PCI-1200 isoftware elinganiselwe. Inqubo yokulinganisa ifaka phakathi ukufunda i-offset kanye nokuzuza amaphutha ezindaweni zedatha ye-AI ne-AO kanye namanani okubhala kuma-DAC wokulinganisa afanele ukuze kuqedwe amaphutha. Kunama-DAC amane okulinganisa ahlotshaniswa nesekhethi ye-AI kanye nama-DAC okulinganisa amane ahlotshaniswa nesekhethi ye-AO. Ngemuva kokuthi inqubo yokulinganisa isiqediwe, i-DAC yokulinganisa ngayinye iba ivelu elaziwayo. Ngenxa yokuthi lawa manani ayalahleka uma idivayisi yehliswa amandla, aphinde agcinwe ku-EEPROM engaphakathi ukuze asetshenziswe esikhathini esizayo.

Ulwazi lwefekthri luthatha ingxenye eyodwa ye-EEPROM futhi luvikelwe ngokubhala. Ingxenye engezansi ye-EEPROM iqukethe izindawo ezine zabasebenzisi zedatha yokulinganisa.

Uma i-NI PCI-1200 ivuliwe, noma izimo esebenza ngaphansi kwazo zishintsha, kufanele ulayishe ama-DAC wokulinganisa ngamaconsi okulinganisa afanelekile.

Uma usebenzisa i-NI PCI-1200 ne-NI-DAQ, LabVIEW, I-LabWindows/CVI, noma enye isofthiwe yohlelo lokusebenza, izinto ezingaguquki zokulinganisa zasembonini zilayishwa ngokuzenzakalelayo kusilinganisi se-DAC lapho kubizwa okokuqala umsebenzi ophathelene ne-NI PCI-1200, futhi njalo lapho ushintsha ukumisa (okuhlanganisa inzuzo). Esikhundleni salokho, ungakhetha ukulayisha ama-DAC wokulinganisa ngama-calibration constants asuka ezindaweni zabasebenzisi ku-EEPROM noma ungakwazi ukulinganisa kabusha i-NI PCI-1200 futhi ulayishe lezi zilinganiso ngqo kuma-DAC wokulinganisa. Isofthiwe yokulinganisa ifakiwe ne-NI PCI-1200 njengengxenye yesofthiwe ye-NI-DAQ.

Ukulinganisa Ngezinzuzo Eziphakeme
I-NI PCI-1200 inephutha elikhulu lokuzuza elingu-0.8%. Lokhu kusho ukuthi uma idivayisi ilinganiswa ngenzuzo engu-1 futhi uma inzuzo ishintshelwa ku-100, iphutha elikhulu lika-32 LSB lingase libangele ukufundwa. Ngakho-ke, lapho ulinganisa kabusha i-NI PCI-1200, kufanele wenze ukulinganisa kwenzuzo kuzo zonke ezinye izinzuzo (2, 5, 10, 20, 50, kanye ne-100), futhi ugcine amanani ahambisanayo endaweni yedatha yokulinganisa inzuzo yomsebenzisi EEPROM, ngaleyo ndlela iqinisekisa iphutha eliphezulu lika-0.02% kuzo zonke izinzuzo. I-NI PCI-1200 ilinganiswe ngokwefekthri kuzo zonke izinzuzo, futhi i-NI-DAQ ilayisha ngokuzenzakalelayo amanani alungile kuma-DAC wokulinganisa noma nini lapho ushintsha izinzuzo.

Izidingo Zezisetshenziswa Zokulinganisa
Izinto zokusebenza ozisebenzisayo ukulinganisa i-NI PCI-1200 kufanele zibe nokunemba kwesilinganiso esingu-±0.001%, okunembe izikhathi eziyi-10 njenge-NI PCI-1200. Kodwa-ke, okokusebenza kokulinganisa okunokunemba okuphindwe kane kuphela njenge-NI PCI-1200 kanye nokunemba kwesilinganiso esingu-±0.003% kuyamukeleka. Ukunemba kwemishini yokulinganisa kuholela ephutheni lenzuzo kuphela; iphutha le-offset alithinteki.
Linganisa i-NI PCI-1200 ekunembeni kwesilinganiso okungu-±0.5 LSBs, okungaphakathi ±0.012% kobubanzi bayo bokufaka.
Ukuze ulinganise i-AI, sebenzisa i-precision DC voltagumthombo, njengesikali, esinezincazelo ezilandelayo:

• Umqtage 0 kuya ku-10 V
• Ukunemba okungu-±0.001%.
±0.003% okwamukelekayo

Ukusebenzisa Umsebenzi Wokulinganisa
Umsebenzi we-Calibrate_1200 kanye ne-1200 Calibrate VI ungakwazi ukulayisha ama-DAC wokulinganisa nama-constants asefekthri noma ama-constants achazwe ngumsebenzisi agcinwe ku-EEPROM, noma ungenza ukulinganisa kwakho futhi ulayishe ngokuqondile lezi zilinganiso kuma-DAC wokulinganisa. Ukuze usebenzise umsebenzi we-Calibrate_1200 noma i-1200 Calibrate VI yokulinganisa i-AI, gxilisa isiteshi se-AI kusixhumi se-I/O ukuze ulinganise i-offset futhi usebenzise ivolumu enembile.tage ireferensi kwesinye isiteshi sokufaka ukuze uthole ukulinganisa. Kufanele uqale ulungiselele imodi ye-ADC ye-RSE, bese ulungisa i-polarity efanele lapho ufuna ukwenza khona ukutholwa kwedatha.

Ukuze usebenzise umsebenzi we-Calibrate_1200 noma i-1200 Calibrate VI yokulinganisa kwe-AO, okuphumayo kwe-DAC0 kanye ne-DAC1 kufanele kusongwe emuva futhi kusetshenziswe kwamanye amashaneli amabili e-AI. Kufanele uqale ulungiselele ukujikeleza kwe-AI ye-RSE kanye ne-bipolar polarity, bese ulungiselela ukujikeleza kwe-AO kwe-polarity ofuna ukwenza kuyo ukukhiqizwa kwe-waveform okukhiphayo.

Bheka imibhalo yesofthiwe yakho ukuze uthole imininingwane eyengeziwe ngomsebenzi we-Calibrate_1200 kanye ne-1200 Calibrate VI.

Imininingwane

Lesi sithasiselo sibonisa imininingwane ye-NI PCI-1200. Le mininingwane ijwayelekile ku-25 °C ngaphandle uma kushiwo ngenye indlela.

Okokufaka kwe-Analog
Izimpawu zokufaka
Inombolo yamashaneli ………………………………. 8 eziphelele,
8 i-pseudodifferential, noma 4 umehluko, isoftware-engakhethwa
Uhlobo lwe-ADC………………………………………… Ukulinganisa okulandelanayo
Isixazululo ……………………………………………. 12 bits, 1 ku-4,096
Ubuningi sampisilinganiso se-ling…………………………………. 100 kS/s

Ububanzi besignali yokokufaka

Ukuhlanganisa okokufaka …………………………………….DC

Dlulisa Izici

AmpLifier Izici

I-impedance yokokufaka
Okujwayelekile kuvuliwe ……………………… 100 G ngokuhambisana no-50 pF
Kucishiwe……………………………………. 4.7k imiz
Ukulayisha ngokweqile……………………………………… 4.7 k min
Okokufaka kokuchema okwamanje ……………………………….. ±100 pA
Okokufaka kwe-offset yamanje……………………………… ±100 pA
I-CMRR…………………………………………………. 70 dB, DC kuya ku-60 Hz

Izici zeDynamic
Umkhawulokudonsa

Incazelo ye-Analog Input Input
Ukunemba okuhlobene kuyisilinganiso sokulandelana kwe-ADC. Kodwa-ke, ukunemba okuhlobene kuwukucaciswa okuqinile kunokucaciswa okungaqondile. Ukunemba okuhlobene kubonisa ukuchezuka okukhulu ukusuka emugqeni oqondile wejika lokudlulisa lokukhiphayo kwe-analog-input-to-digital-output. Uma i-ADC ilinganiswe kahle, lo mugqa oqondile uwumsebenzi ofanele wokudlulisa, futhi imininingwane yokunemba ehlobene ikhombisa ukuchezuka okubi kakhulu kokuhle okuvunyelwa yi-ADC.

Ukunemba okuhlobene kwe-±1 LSB kucishe kulingane, kodwa akufani nokuthi, ±0.5 LSB nonlinearity noma ukunemba okubalulekile kokungaqondile ngoba ukunemba okuhlobene kuhlanganisa kokubili ukungaqondile kanye nokuhlukahluka kokulinganisa ukungaqiniseki, inani elivame ukucatshangwa ngephutha ukuthi liyi-±0.5 LSB ncamashi. . Nakuba ukungaqiniseki komthamo kuwu-±0.5 LSB, kungase kuhluke kukhodi ngayinye yedijithali engenzeka futhi empeleni kuwububanzi be-analogi bekhodi ngayinye. Ngakho-ke, kucace kakhulu ukusebenzisa ukunemba okuhlobene njengesilinganiso somugqa kunokusebenzisa lokho okuvame ukubizwa ngokuthi i-nonlinearity, ngoba ukunemba okuhlobene kuqinisekisa ukuthi isamba sokungaqiniseki kwe-quantization kanye nephutha lokuguqulwa kwe-A/D aseqeli inani elinikeziwe.

I-Integral nonlinearity (INL) ku-ADC iwukucaciswa okuvamise ukuchazwa ngendlela efanele okufanele kubonise umugqa ophelele wokudlulisa we-A/D wesiguquli. Umkhiqizi we-ADC chip NI esebenzisa i-NI PCI-1200 ucacisa ukungahambelani kwayo okubalulekile ngokuthi isikhungo se-analogi sanoma iyiphi ikhodi asisuki emugqeni oqondile ngaphezu kuka-±1 LSB. Lokhu kucaciswa kuyadukisa ngoba, nakuba isikhungo sekhodi ebanzi ikakhulukazi singatholakala ngaphakathi kwe-±1 LSB yenhle, enye yamaphethelo ayo ingase ibe ngaphezu kuka-±1.5 LSB; ngakho, i-ADC izoba nokunemba okulinganiselwe kwaleyo mali. I-NI ihlola amadivayisi ayo ukuze iqinisekise ukuthi ahlangabezana nakho konke ukucaciswa komugqa okuchazwe kulesi sithasiselo.

I-Differential nonlinearity (DNL) isilinganiso sokuchezuka kobubanzi bekhodi ukusuka kunani lethiyori elingu-1 LSB. Ububanzi bekhodi enikeziwe wusayizi wobubanzi bamanani e-analog okungafakwa ukuze kukhiqizwe leyo khodi, ngokufanelekile 1 LSB. Ukucaciswa kokungaqondile kokuhluka kwe-±1 LSB kuqinisekisa ukuthi ayikho ikhodi enobubanzi obungu-0 LSB (okungukuthi, awekho amakhodi angekho) nokuthi abukho ububanzi bekhodi obudlula ama-LSB angu-2.

Umsindo wesistimu inani lomsindo obonwa i-ADC uma ingekho isignali ekhona ekufakweni kwedivayisi. Inani lomsindo elibikwa ngokuqondile (ngaphandle kokuhlaziya) yi-ADC akulona inani lomsindo wangempela okhona ohlelweni, ngaphandle uma umsindo umkhulu kakhulu kuno-0.5 LSB rms. Umsindo ongaphansi kwalobu bukhulu ukhiqiza amanani ahlukahlukene okucwayiza, futhi inani lokucwayiza elibonwayo liwumsebenzi wokuthi iseduze kangakanani incazelo yangempela yomsindo ekushintsheni kwekhodi. Uma incazelo iseduze noma ekushintsheni phakathi kwamakhodi, i-ADC icwayiza ngokulinganayo phakathi kwamakhodi amabili, futhi umsindo useduze kakhulu no-0.5 LSB. Uma incazelo iseduze nendawo emaphakathi yekhodi futhi umsindo umncane uma kuqhathaniswa, kuncane kakhulu noma kungacwayizi nhlobo, futhi umsindo ubikwa yi-ADC cishe njengo-0 LSB. Kusukela kubudlelwano phakathi kwencazelo yomsindo kanye nobukhulu be-rms obulinganisiwe bomsindo, uhlamvu lomsindo lunganqunywa. I-NI inqume ukuthi uhlamvu lomsindo ku-NI PCI-1200 luyi-Gaussian ngokufanelekile, ngakho-ke ukucaciswa komsindo okunikezwayo amanani omsindo we-Gaussian omsulwa odingekayo ukukhiqiza ukufundwa kwethu.

Incazelo ye-Dither
I-dither circuitry, uma inikwe amandla, yengeza cishe ama-rms angu-0.5 LSB womsindo we-Gaussian omhlophe kusiginali ezoguqulelwa ku-ADC. Lokhu okungeziwe kuwusizo ezinhlelweni zokusebenza, ezifana nokulinganisa, okubandakanya ukulinganisa ukukhulisa ukulungiswa kwe-NI PCI-1200 kuya kumabhithi angaphezu kuka-12. Kulezi zinhlelo zokusebenza, ezivame ukuba yizikhawu eziphansi ngokwemvelo, ukushintshwa komsindo kuyehla futhi ukuhluka komugqa kuthuthukiswa ngokungezwa kwe-dither. Kuzinhlelo zokusebenza ezinesivinini esiphezulu esingu-12-bit ezingabandakanyi isilinganiso, i-dither kufanele ikhutshazwe ngoba yengeza umsindo kuphela.

Uma uthatha izilinganiso ze-DC, njengalapho ulinganisa idivayisi, vumela i-dither futhi ulinganise amaphuzu angu-1,000 ukuze ufunde okukodwa.

Le nqubo isusa imiphumela ye-12-bit quantization futhi inciphisa umsindo wokulinganisa, okuholela ekulungisweni okuthuthukisiwe. I-Dither, noma umsindo omhlophe owengeziwe, unomthelela wokuphoqelela umsindo wokulinganisa ukuthi ube yiziro-okusho okungahleliwe okuguquguqukayo kunokuba umsebenzi onqumayo wokufakwayo.

Incazelo Yamazinga e-DAQ
Izilinganiso eziphezulu ze-DAQ (inombolo ye-S/s) zinqunywa isikhathi sokuguqulwa se-ADC kanye ne-sampisikhathi sokutholwa se-le-and-hold, esicaciswe ku-10 μs. Ngesikhathi sokuskena kwama-multichannel, amanani e-DAQ aphinde akhawulelwe isikhathi sokusetha sokuphindaphinda okokufaka kanye nenzuzo ehlelekayo. ampi-lifier. Ngemuva kokuthi ama-multiplexer okokufaka ashintshiwe, i ampi-lifier kufanele ivunyelwe ukuthi ihlale enanini lesignali entsha ibe ngaphakathi kokunemba kwe-12-bit. Isikhathi sokukhokha siwumsebenzi wenzuzo ekhethiwe.

I-Analog Output

Incazelo ye-Analog Output Specifications
Ukunemba okuhlobene kusistimu ye-D/A kuyafana nokungaqondile ngoba akukho ukungaqiniseki okwengezwe ngenxa yobubanzi bekhodi. Ngokungafani ne-ADC, yonke ikhodi yedijithali kusistimu ye-D/A imelela inani elithile le-analog kunebanga lamanani. Ngakho-ke ukunemba okuhlobene kwesistimu kukhawulelwe ekuphambukeni okubi kakhulu ekubhaleni okufanele (umugqa oqondile), ngaphandle komsindo. Uma isistimu ye-D/A ilinganiswe ngokuphelele, ukucaciswa kokunemba okuhlobene kubonisa iphutha layo elibi kakhulu. I-DNL ohlelweni lwe-D/A isilinganiso sokuchezuka kobubanzi bekhodi ukusuka ku-1 LSB.

Kulokhu, ububanzi bekhodi umehluko phakathi kwamanani e-analog akhiqizwa amakhodi edijithali alandelanayo. Ukucaciswa kokungaqondile kokuhluka kwe-±1 LSB kuqinisekisa ukuthi ububanzi bekhodi buhlala bukhulu kuno-0 LSBs (ukuqinisekisa i-monotonicity) futhi buhlala bungaphansi kwama-2 LSB.

I-I/O yedijithali
Inombolo yamashaneli ………………………………. 24 I/O (izimbobo ezintathu ze-8-bit; isebenzisa i-82C55A PPI)
Ukuhambisana ………………………………………….. TTL

Amazinga e-Digital logic

Isikhathi I/O
Inani lamashaneli ……………………………..3 izinto zokubala/izibali zesikhathi
Ukuvikela…………………………………………–0.5 kuya ku-5.5 V kuvuliwe, ±0.5 V kuvaliwe

Isixazululo
Izinto zokubala/izikhathi ……………………………… amabhithi angu-16
Ukuhambisana ……………………………………………TTL
Iwashi eliyisisekelo liyatholakala …………………………….2 MHz
Ukunemba kwewashi lesisekelo……………………………..±50 ppm ubuningi
Imvamisa yomthombo omkhulu…………………………..8 MHz
Ubude besikhathi sokushaya komthombo omncane ………………….125 ns
Ubude be-Min gate pulse ………………………..50 ns

Amazinga e-Digital logic

I-Bus Interface
Thayipha ……………………………………………………. Isigqila
Imfuneko Yamandla
Ukusetshenziswa kwamandla………………………….. 425 mA ku-+5 VDC (±5%)
Amandla atholakala kusixhumi se-I/O ……….. +4.65 kuya ku-+5.25 V ahlanganiswe ngo-1 A
Okomzimba
Ubukhulu……………………………………………… 17.45 by 10.56 cm
(6.87 ngo-4.16 in.)
Isixhumi se-I/O…………………………………………… owesilisa wamaphini angu-50

Maximum Working Voltage
Umthamo omkhulu wokusebenzatagu-e ubhekisela kuvolumu yesignalitage plus the common-mode voltage.

Isiteshi ukuya emhlabeni ………………………………….42 V, Isigaba Sokufakwa II
Isiteshi-kuya-kusiteshi……………………………42 V, Isigaba Sokufaka II

Ezemvelo
Izinga lokushisa lokusebenza ………………………….0 kuya ku-50 °C
Izinga lokushisa lesitoreji ……………………………..–55 kuya ku-150 °C
Umswakamo……………………………………………….5 kuya ku-90% RH, ukunganciphisi
Ukuphakama okukhulu…………………………………..2,000 amamitha
Iziqu zokungcola (ukusetshenziswa kwasendlini kuphela) ………2

Ukuphepha

I-NI PCI-1200 ihlangabezana nezidingo zala mazinga alandelayo okuphepha nezisetshenziswa zikagesi zokulinganisa, ukulawula, kanye nokusetshenziswa kwaselabhorethri:
• EN 61010-1:1993/A2:1995, IEC 61010-1:1990/A2:1995
• UL 3101-1:1993, UL 3111-1:1994, UL 3121:1998
• CAN/CSA c22.2 no. 1010.1:1992/A2:1997

I-Electromagnetic Compatibility
I-CE, C-Tick, kanye ne-FCC Ingxenye 15 (Ikilasi A) Iyathobelana
Ukukhishwa kukagesi …………………………..EN 55011 Ikilasi A ngo-10 m
I-FCC Ingxenye 15A ngaphezu kuka-1 GHz
Ukungavikeleki kukagesi …………………………..Kuhlolwe ku-EN 61326:1998, Ithebula 1

Qaphela Ukuze uhambisane ngokugcwele ne-EMC, kufanele usebenzise le divayisi ngekhebula evikelekile. Ngaphezu kwalokho, zonke izembozo kanye namaphaneli okugcwalisa kufanele afakwe. Bheka ku-Declaration of Conformity (DoC) kulo mkhiqizo ukuze uthole noma yiluphi ulwazi olwengeziwe lokuthobela imithetho.

Ukuze uthole i-DoC yalo mkhiqizo, chofoza i-Declaration of Conformity kokuthi ni.com/hardref.nsf/. Lokhu Web isayithi libala ama-DoC ngokomndeni womkhiqizo. Khetha umndeni womkhiqizo ofanele, ulandelwe umkhiqizo, futhi isixhumanisi se-DoC sivela ngefomethi ye-Adobe Acrobat. Chofoza isithonjana se-Acrobat ukuze ulande noma ufunde i-DoC.

 

B. Ukwesekwa Kwezobuchwepheshe kanye Nezinsizakalo Zochwepheshe

Vakashela izigaba ezilandelayo ze-National Instruments Web isayithi ku-ni.com ukuze uthole ukwesekwa kwezobuchwepheshe kanye nezinsizakalo zobungcweti:
• Usekelo—Izinsiza zosekelo lobuchwepheshe ku-inthanethi zifaka lokhu okulandelayo:
– Izinsiza Zokuzisiza—Ukuze uthole izimpendulo ezisheshayo nezisombululo, vakashela umtapo wethu obanzi wezinsiza zosekelo ezitholakala ngesiNgisi, isiJapane, neSpanishi kokuthi ni.com/support. Lezi zinsiza zitholakalela imikhiqizo eminingi ngaphandle kwezindleko kubasebenzisi ababhalisiwe futhi zifaka izishayeli zesofthiwe nezibuyekezo, i-KnowledgeBase, amamanuwali omkhiqizo, amawidi okuxazulula inkinga esinyathelo nesinyathelo, ama-hardware schematics kanye nemibhalo yokuvumelana, ex.ample code, okokufundisa namanothi ohlelo lokusebenza, abashayeli bezinsimbi, izinkundla zezingxoxo, uhlu lwamagama okulinganisa, nokunye.
- Izinketho Zokusekela Okusizwayo - Xhumana nonjiniyela be-NI nabanye ochwepheshe bokulinganisa ne-automation ngokuvakashela ku-ni.com/ask. Isistimu yethu ye-inthanethi ikusiza ukuthi uchaze umbuzo wakho futhi ikuxhume kochwepheshe ngocingo, inkundla yezingxoxo, noma i-imeyili.
• Ukuqeqesha—Vakashela ku-ni.com/cused ukuze uthole okokufundisa okuzihambelayo, amavidiyo, nama-CD asebenzisanayo. Ungakwazi futhi ukubhalisela izifundo eziholwa nguthisha, ezisebenza ngezandla ezindaweni emhlabeni jikelele.
• Ukuhlanganiswa Kwesistimu—Uma unezinkinga zesikhathi, izinsiza zobuchwepheshe ezilinganiselwe zasendlini, noma ezinye izinselele zephrojekthi, amalungu oHlelo lwe-NI Alliance angasiza. Ukuze ufunde kabanzi, shayela ihhovisi langakini le-NI noma vakashela ku-ni.com/alliance.

Uma useshe i-ni.com futhi ungazitholi izimpendulo ozidingayo, xhumana nehhovisi lendawo noma ikomkhulu lebhizinisi le-NI. Izinombolo zocingo zamahhovisi ethu omhlaba wonke zibalwe ekuqaleni kwaleli bhukwana. Futhi ungavakashela ingxenye yamaHhovisi Omhlaba Wonke ku-ni.com/niglobal ukuze ungene ehhovisi legatsha Web amasayithi, ahlinzeka ngolwazi lwakamuva lokuxhumana, izinombolo zocingo zokusekela, amakheli e-imeyili, nemicimbi yamanje.

Uhlu lwamagama

Izinombolo/Izimpawu

 

Inkomba

 

Funda okwengeziwe ngale Manuwali & Landa i-PDF:

Amadokhumenti / Izinsiza

Idivayisi ye-APEX WAVES NI PCI-1200 Multifunctional IO yamakhompyutha webhasi we-PCI [pdf] Imaniwali yosebenzisayo I-NI PCI-1200 Multifunctional IO Idivayisi ye-PCI Bus Computers, i-NI PCI-1200, I-Multifunctional IO Idivayisi yamakhompyutha we-PCI Bus, Idivayisi ye-IO yamakhompyutha we-PCI Bus, PCI Bus Computers, Amakhompyutha Webhasi

Izithenjwa

• Imaniwali yosebenzisayo