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National Instruments PCI-1200 - page 1
DAQ PCI-1200 User Manual Multifunction al I/O Board for P CI Bus Computers PCI-120 0 User Manual July 199 8 Edition Part Numb er 32094 2C-01 ...
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National Instruments PCI-1200 - page 2
Inter net Su pport E-mail: support@natinst.com FTP Site : ftp.natinst.com Web Address: http://www.natinst.com Bulletin Board Sup port BBS Unite d Stat es: 512 794 5422 BBS Unit ed Kingd om: 0 1635 5 51422 BBS Fr ance: 01 48 65 15 59 Fax- on-D emand Su pport 512 418 11 11 Tele phone S uppor t (USA ) Tel: 51 2 795 8248 Fax: 51 2 794 56 78 Interna tio ...
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National Instruments PCI-1200 - page 3
Important Information Warrant y The PCI-1200 is warranted agains t defects in mater ials and workmans hip for a period of one year from the date of shipment, as evidenced by receipts or other documentation . National Instruments will, at its option, repair or replace equipment th at proves to be defecti ve during the war ranty period. Thi s warrant ...
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National Instruments PCI-1200 - page 4
© Nationa l Instrume nts Cor poration v PCI-1200 Us er Manu al Contents About This M anual Organization of Th is Manual ............... ........... ................. ................. ................. ........... . ix Convention s Used in This Manual............ ................. ................. ............ ................. ...... x National ...
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National Instruments PCI-1200 - page 5
Contents PCI-1200 U ser M anual vi © Nati onal Ins truments Corporat ion Types of Signal Sources .............. ................. ........... ................. ........ 3-7 Floating Signal Sources .................. ........... ................. ........ 3-7 Ground-Ref erenced Signal Sources ..................... .............. 3-7 Input Configu r ...
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National Instruments PCI-1200 - page 6
Contents © Nationa l Instrume nts Cor poration vii PCI-1200 Us er Manu al Analog Output Circ uitry ........ ................. ................. ........... ................. ............ 4-11 DAC Timing .................... ........... ................. ................. ............ ................. ...... 4-12 Digital I/O ...................... ...
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National Instruments PCI-1200 - page 7
Contents PCI-1200 U ser M anual viii © Nati onal Ins truments Corporat ion Figure 3-16. General Purpose Timing Signals .......... ............ ................. ................. .. 3-26 Figure 3-17. Mode 1 Timing Sp ecifications for Inp ut Transfers....................... ........ 3-28 Figure 3-18. Mode 1 Timing Sp ecifications for Output Transfe ...
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National Instruments PCI-1200 - page 8
© Nationa l Instrume nts Cor poration ix PCI-120 0 User Manu al About This Manual This manual describes the electrical and mechanical aspects of the PCI-1200 and co ntains information con cerning its operation and programmi ng. The PCI-1200 is a low-cost multifunction analog, digital, an d timing board. The PCI-1200 is a member of the National Ins ...
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National Instruments PCI-1200 - page 9
About This Ma nual PCI-1200 U ser M anual x © Nati onal Ins truments Corporat ion Conventions Used in This Manual The follo wing con ventions ar e used in this manual: < > Angle brack ets enclose the name of a ke y on the k eyboard — for example, <shift>. Angle brackets containing numbers separated by an ellipsis represent a range o ...
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National Instruments PCI-1200 - page 10
About This Ma nual © Nationa l Instrume nts Cor poration xi PCI-120 0 User Manu al National Instruments Documentation The PCI-120 0 User Manu al is one piece of the do cumentation set for yo ur D A Q system. Y ou could ha ve an y of se veral type s of manual s, depend ing on the hard ware and softw are in your system. Use the manu als you ha ve as ...
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National Instruments PCI-1200 - page 11
About This Ma nual PCI-1200 U ser M anual xii © Nati onal Ins truments Corpor ation Related Documentation The follo wing National In struments document contain s information that you may f ind helpful as you read thi s manual: • Application Note 025, Field Wiri ng and N oise Consi deratio ns for Analog Signals The follo wing documents also conta ...
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National Instruments PCI-1200 - page 12
© Nationa l Instrume nts Cor poration 1-1 PCI-1200 Us er Manu al 1 Introduction This chapter descr ibes the PCI-1200, lists what you need to ge t started, software progr amming choices, and optional equipment, and explains how to build custo m cables and unpack the PCI-1200. About the PCI-1200 Thank you for purchas ing the PCI- 1200, a low -cost, ...
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National Instruments PCI-1200 - page 13
Chapter 1 Introduction PCI-1200 U ser M anual 1-2 © Nati onal Ins truments Corporat ion – NI-D A Q for Macintosh – NI-D A Q for PC compatib les – V i rtualBench ❑ Y our comput er Unpacking Your PCI-1200 is s hipped in an antistatic packag e to prevent electrostatic damage to the bo ard. Electrostatic disch arge can damage se veral componen ...
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National Instruments PCI-1200 - page 14
Chapter 1 Intro duction © Nationa l Instrume nts Cor poration 1-3 PCI-1200 Us er Manu al LabVIEW . The LabVIEW Da ta Acquisit ion VI Librar y is func tionally equi v alent to the NI-D A Q software. LabW indows /CVI features interacti ve gr aphics, a state-of -the-art user interface, and uses the ANSI standard C programming lan guage. The LabW ind ...
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National Instruments PCI-1200 - page 15
Chapter 1 Introduction PCI-1200 U ser M anual 1-4 © Nati onal Ins truments Corporat ion minimal modif ications to yo ur code. Whet her you ar e using con vent ional programmi ng languages , LabVIEW , LabW indow s/CVI, or oth er application softwa re, your application u ses the NI-D A Q driv er softwar e, as illustrated in Figure 1 -1. Figur e 1-1. ...
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National Instruments PCI-1200 - page 16
Chapter 1 Intro duction © Nationa l Instrume nts Cor poration 1-5 PCI-1200 Us er Manu al Optional Equipment National Instrum ents off ers a va riety of p roducts t o use with your PC I-1200 board, including cab les, connector b locks, and other acces sories, as follows: • Cables and cable assemblies • Connector b locks, 50-p in scre w term ina ...
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National Instruments PCI-1200 - page 17
Chapter 1 Introduction PCI-1200 U ser M anual 1-6 © Nati onal Ins truments Corporat ion The mating connector for the PC I-1200 is a 50-positio n, polarized, ribbon socket conn ector with strain relief. National Ins truments uses a polarized (ke yed) connecto r to pre vent inadvertent u pside-do wn connection to the PCI-1200. Recommended manuf actu ...
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National Instruments PCI-1200 - page 18
© Nationa l Instrume nts Cor poration 2-1 PCI-1200 Us er Manu al 2 Installation and Configuration This chapter describes how to install and config ure your PCI-1200. Software Instal lation If you are using NI- DAQ, or Nati onal Inst ruments application software, refer to the installatio n instructions in yo ur software documentatio n to install an ...
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National Instruments PCI-1200 - page 19
Chapter 2 Installat ion and Conf igurat ion PCI-1200 U ser M anual 2-2 © Nati onal Ins truments Corporat ion Board Configuration The PCI-1 200 is compl etely soft ware configur able. The PCI -1200 is ful ly compliant with the PCI Local Bus Specification , Revision 2.0 . Therefo re, all board resource s are automatically allocated by the system. Fo ...
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National Instruments PCI-1200 - page 20
Chapter 2 Installat ion and Confi guration © Nationa l Instrume nts Cor poration 2-3 PCI-1200 Us er Manu al Analog Ou tput Po larity The PCI-120 0 has two channels of analo g output vol tage at the I/O connector. Yo u can configure each analog output chann el for either unipolar or bipolar output. A unipolar con figuration h as a rang e of 0 to 10 ...
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National Instruments PCI-1200 - page 21
Chapter 2 Installat ion and Conf igurat ion PCI-1200 U ser M anual 2-4 © Nati onal Ins truments Corporat ion While read ing the fo llo wing para graphs, yo u may f ind it h elpful t o refer to the Analog Input Signal Connection s section of C hapter 3, Signal Connectio ns , which contains diagrams sho wing the signal paths for the three conf igura ...
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National Instruments PCI-1200 - page 22
Chapter 2 Installat ion and Confi guration © Nationa l Instrume nts Cor poration 2-5 PCI-1200 Us er Manu al Considerat ions for using the NRS E conf iguration ar e discus sed in Chapte r 3, Sig nal Co nne ctio ns . N otice that in this mode, the signal return path is through the negati ve terminal of the amplifier at the connector through the AISE ...
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National Instruments PCI-1200 - page 23
© Nationa l Instrume nts Cor poration 3-1 PCI-1200 Us er Manu al 3 Signal Connections This chapt er describes how t o make input and output si gnal connection s to the PCI-1 200 board via th e board I/O co nnector and det ails the I/O timi ng specifications. The I/O connector for the PCI-1200 h as 50 pins that yo u can connect to 50-pin accessorie ...
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National Instruments PCI-1200 - page 24
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-2 © Nati onal Ins truments Corporat ion Figu re 3-1 . PCI-1200 I/O Connect or Pin Assig nments Signal Conne ction Descriptio ns The fo llowing table descri bes the co nnecto r pins on the PCI-12 00 I/O connec tor by pin num ber an d gi ves the si gnal na me and descri ption of each sig nal con ...
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National Instruments PCI-1200 - page 25
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-3 PCI-1200 Us er Manu al Table 3- 1. Signa l Desc ripti ons for PCI-12 00 I/O Conn ector Pin s Pin S ign al Name Direction Refer ence D escription 1-8 A CH<7..0> AI A GND Analog Channel 7 through 0 — Anal og input ch annels 0 t hrough 7. 9 AISENSE/AIGND I/O A GND Analog ...
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National Instruments PCI-1200 - page 26
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-4 © Nati onal Ins truments Corporat ion The connector pins are grouped into analog input si gnal pins, an alog outpu t signal p ins, digit al I/O s ignal pi ns, timing I/O sig nal pins, and p ow er connections. The f ollowing sections describe the signal con nection guidelines for each of thes ...
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National Instruments PCI-1200 - page 27
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-5 PCI-1200 Us er Manu al Analog Inpu t Signal Conn ections Pins 1 t hrough 8 are an alog input signal pins for t he 12-bit ADC. Pin 9, AISENSE/AIGND, is an analog common signal. You can use this pin for a general an alog power ground tie t o the PCI-1200 in RSE mode or as a retu ...
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National Instruments PCI-1200 - page 28
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-6 © Nati onal Ins truments Corporat ion Ho w you con nect analog i nput sign als to th e PCI-1200 dep ends o n ho w you conf igure the PC I-1200 anal og input ci rcuitry and the type of input sign al source. W ith dif ferent PCI-1200 c onf iguration s, you can use t he PCI-120 0 instrum entati ...
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National Instruments PCI-1200 - page 29
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-7 PCI-1200 Us er Manu al grounded source, you must use a nonreferenced in put connecti on at the PCI-12 00. T ypes of Si gnal Sou rces When config uring the in put mode o f the PCI-1 200 and makin g signal connection s, first determine whether th e signal source is floating or g ...
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National Instruments PCI-1200 - page 30
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-8 © Nati onal Ins truments Corporat ion and groun d-referenced s ignal sources . Table 3-4 summarizes the recommended input config urations f or both ty pes of sig nal sources. Table 3- 4. Sum mar y of An alog In put Conn ection s Input Diff erential (DIFF) Single-Ended — Ground Referenced ( ...
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National Instruments PCI-1200 - page 31
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-9 PCI-1200 Us er Manu al Differential Connection Considerations (DIFF Con figuration) Differential connections are those in which each PCI-1200 analog inpu t signal has its own reference sign al or signal return path. These connections are available when yo u configure the PCI-1 ...
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National Instruments PCI-1200 - page 32
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-10 © Nati onal Ins truments Corporat ion Differential Connections for Grounded Signal Sources Figure 3-3 shows ho w to connect a g round-refer enced sign al source to a PCI-12 00 board configu red for DIFF inpu t. Configu ration inst ructions are in the Analog I/O Configur ation section in Cha ...
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National Instruments PCI-1200 - page 33
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-11 PCI-1200 Us er Manu al Differential Connections for F loating Signal Sources Figure 3-4 shows ho w to connect a f loating signal so urce to a PCI- 1200 board configured for DIFF inp ut. Configuration instructio ns are in the Analog I/O Conf iguration section of Chapter 2, Ins ...
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National Instruments PCI-1200 - page 34
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-12 © Nati onal Ins truments Corporat ion resulting in uncontro llable drift and possible satu ration in the amplifier . T ypically , v alues f rom 10 k Ω to 100 k Ω ar e used. A resistor from each input to ground, as shown in Figure 3-4, pro vides bias current r eturn paths fo r an A C-cou ...
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National Instruments PCI-1200 - page 35
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-13 PCI-1200 Us er Manu al Single-Ended Connections for Floating Si gnal Sources (RSE Configuration) Figure 3-5 shows ho w to connect a f loating signal so urce to a PCI- 1200 board conf igured fo r RSE mode. Co nfigure the PCI-1200 analog input circuitry for RS E input to make t ...
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National Instruments PCI-1200 - page 36
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-14 © Nati onal Ins truments Corporat ion RSE configur ation, this differen ce in ground potentials appears as an erro r in the measured voltage. Figure 3-6 sho ws how to connect a gr ounded sig nal sourc e to a PCI-12 00 board configured in the NRSE conf iguration. Co nfiguration instructions ...
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National Instruments PCI-1200 - page 37
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-15 PCI-1200 Us er Manu al The common -mode input ran ge for the P CI-1200 depends on the size of the dif fer enti al inp ut sig nal (V diff = V + in – V – in ) and the gain setting of the instrum entation am plif ier . In uni polar mode, the dif ferential input r ange is 0 t ...
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National Instruments PCI-1200 - page 38
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-16 © Nati onal Ins truments Corporat ion Figu re 3-7 shows how to make analo g ou tput s igna l conn ect ions . Figur e 3-7. Ana log Outp ut Si gnal Co nnec tions Digital I/O Signal Co nnections Pins 13 throu gh 37 of t he I/O conn ector are digit al I/O sig nal pins. Digi tal I/O on th e PCI- ...
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National Instruments PCI-1200 - page 39
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-17 PCI-1200 Us er Manu al Logical Inp uts and Output s • Absolute max voltage rating – 0.5 to +5.5 V with respect to DGND • Digital I/O lines: – Input logic lo w voltage – 0.3 V min 0.8 V max – Input logic high v oltage 2.2 V min 5.3 V max – Output logic low v olta ...
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National Instruments PCI-1200 - page 40
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-18 © Nati onal Ins truments Corporat ion Figure 3- 8. Digital output applications includ e sending TTL sign als and dri ving e xternal de vices such as the LED s how n in Figure 3-8. Port C Pin Connecti ons The signal s assign ed to port C depend on the mode in which t he 82C55A is programmed ...
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National Instruments PCI-1200 - page 41
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-19 PCI-1200 Us er Manu al timi ng, a nd th e ot her, 82C53 (B) , is a vail able for g ener al u se. U se pi ns 38 through 4 0 and pin 43 to carr y external signals for DAQ timing. These signals ar e explained in the n ext section, DAQ Tim ing Co nnections . P ins 41 throug h 48 ...
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National Instruments PCI-1200 - page 42
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-20 © Nati onal Ins truments Corporat ion of EXTCONV*. Further transitions on the EXTTRIG line h av e no ef fect until a ne w D A Q sequence is establ ished. Figure 3-10 shows a possible controlled D A Q seq uence using EXTCONV* and EXTTRIG. The ris ing edge of EXTCONV* that enables e x ternal ...
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National Instruments PCI-1200 - page 43
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-21 PCI-1200 Us er Manu al Figur e 3-11 . Pretrigg er DAQ Timin g For interv al scanning data acquisition, co unter B1 determines the scan interv al. Instead of using coun ter B1, you can ext ernally time th e scan interval through OUTB1. If you e xternally time the samp le inter ...
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National Instruments PCI-1200 - page 44
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-22 © Nati onal Ins truments Corporat ion Figu re 3-12. I nter va l-Scanni ng S ignal Timing Y ou use the f inal e xternal control signal, EXTUPD A TE*, to externally control u pdating the o utput v oltage of the 12-bi t D A Cs and/or t o generate an ex ternally timed interrupt. There are two u ...
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National Instruments PCI-1200 - page 45
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-23 PCI-1200 Us er Manu al Figu re 3-13. EXTUPDA TE* Signal Tim ing for Updating DAC Outp ut The absolute max voltage input rating for the EXTCONV*, EXTTRIG, OUTB1, and EXTUPD A TE* signals is – 0.5 to 5.5 V with resp ect to DGND. Fo r more information concerning the v arious m ...
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National Instruments PCI-1200 - page 46
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-24 © Nati onal Ins truments Corporat ion Figu re 3-14. Event-Countin g Appl ication w ith Exte rnal Sw itch Gatin g Pulse-widt h measuremen t is perfor med by le ve l gating . The puls e you wan t to measure is applied to the counter GA TE input. The counter is loaded with the kno wn count and ...
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National Instruments PCI-1200 - page 47
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-25 PCI-1200 Us er Manu al generate the g ate signal in this app lication. If you use a s econd counter , howe ver , you mu st externally inv ert the si gnal. Figu re 3- 15. Frequency Measu rement Appli cation The GA TE, CLK, and OUT signals for counters B1 and B 2 are av ailable ...
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National Instruments PCI-1200 - page 48
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-26 © Nati onal Ins truments Corporat ion • 82C53 digital output specif ications (referenced to DGND): – V oh output l ogic high volt age 3.7 V min — – V ol output logic low v oltag e — 0.45 V max – I oh output source cu rrent, at V oh —– 0.92 mA max – I ol output sink current ...
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National Instruments PCI-1200 - page 49
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-27 PCI-1200 Us er Manu al Ti ming Specif icatio ns Use the h andshaking l ines STB* and IBF to synchron ize input tr ansfers. Use the h andshaking l ines OBF* and ACK* to synchroni ze output transfers. The follo wing signals are used in the mo de timing diagrams: Tabl e 3-6. Sig ...
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National Instruments PCI-1200 - page 50
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-28 © Nati onal Ins truments Corporat ion Mode 1 In put Timing The timing specifications for an input transfer in m ode 1 are as follows: Figu re 3- 17. Mode 1 Timing Specif ication s for Inpu t T rans fers Name Descriptio n Minimum Max imum T1 STB* puls e width 500 — T2 STB* = 0 to IBF = 1 ? ...
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National Instruments PCI-1200 - page 51
Chapter 3 Signal Conne ctions © Nationa l Instrume nts Cor poration 3-29 PCI-1200 Us er Manu al Mode 1 Ou tput Timing The timing specifications for an output trans fer in mode 1 are as follows: Figur e 3-18. Mo de 1 Timing S pecifi cation s for Outpu t T rans fer s Name Descriptio n Minimum Max imum T1 WR T* = 0 to INTR = 0 — 450 T2 WR T* = 1 to ...
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National Instruments PCI-1200 - page 52
Chapter 3 Signal Connect ions PCI-1200 U ser M anual 3-30 © Nati onal Ins truments Corporat ion Mode 2 Bid irectional Timing The timing specifications for bidirectional transfers in mode 2 are as follows: Figur e 3-19. Mod e 2 Timing Spec ificati ons for Bidi rection al T r ansfers Name Descriptio n Minimum Max imum T1 WR T* = 1 to OBF* = 0 — 65 ...
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National Instruments PCI-1200 - page 53
© Nationa l Instrume nts Cor poration 4-1 PCI-1200 Us er Manu al 4 Theor y of Operation This chapter explain s the operation of each functional unit o f the PCI-1200. Functional Overview The block diagram in Fi gure 4-1 s hows a fun ctional overvi ew of the PCI-12 00 board. Figu re 4-1. PCI- 1200 Blo ck Diagr am The major comp onents of the PC I-1 ...
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National Instruments PCI-1200 - page 54
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-2 © Nati onal Ins truments Corporat ion • Digital I/O circuitry • Calibration ci rcuitry The internal data and control b uses interconnect the compon ents. The rest of this chapter explains the theo ry of operation of each of the PCI-1 200 components. Calibrati on circuitry is discuss e ...
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National Instruments PCI-1200 - page 55
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-3 PCI-1200 Us er Manu al The PCI-1200 gen erates an interrup t in the following fi ve cases (each of these interrupts is indiv idually enabled and cleared): • When a single A/D con v ersion can be read from the A/D FIFO memory . • When the A/D FIFO is h alf-full. • When ...
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National Instruments PCI-1200 - page 56
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-4 © Nati onal Ins truments Corporat ion Figu re 4-3. Timing Circuitr y Each 82C53 contains three independent 16-bit counter/tim ers and one 8-bit mode re gister . Each counter has a CLK input pin, a GA TE input p in, and an OUT output pin. Y ou can program all six counter/timers to operate ...
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National Instruments PCI-1200 - page 57
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-5 PCI-1200 Us er Manu al timing, or you can use the three ex ternal timing signals, EXTCONV*, EXTTRIG, and EXTUPD A TE*, for D A Q and D A C timing. The second group o f counter/ timers i s called grou p B and in cludes B0, B1, and B2. Y ou can use counters B0 and B1 for inte ...
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National Instruments PCI-1200 - page 58
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-6 © Nati onal Ins truments Corporat ion Analog Inpu t Circuitr y The analog input circuitry consists of two analog input multiplexers, multiplexer (mux) co unter/gain select circuitry, a software-progr ammable gain amplifier, a 12-bit ADC, and a 16-bit sign -extended FIFO memory. One of the ...
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National Instruments PCI-1200 - page 59
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-7 PCI-1200 Us er Manu al Stanl ey P . Lips hi tz, Jour nal o f the Aud io En gine eri ng Soc iety , V ol. 35, No. 12, Dec. 1987. The PCI-1200 us es a 12-bit successi ve-appr oximation ADC. The con verter ’ s 12-bit r esolution allows it to resolve its input range into 4,095 ...
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National Instruments PCI-1200 - page 60
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-8 © Nati onal Ins truments Corporat ion counts t he total number of samples t aken dur ing a contro lled operatio n, or throug h software control i n a freerun operat ion. Controlled Acqu isition Mode The PCI-1200 us es two counters, co unter A0 and counter A1 , to execute DAQ operations in ...
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National Instruments PCI-1200 - page 61
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-9 PCI-1200 Us er Manu al repeat this process ev ery 65 ms, then you shou ld def ine the operation as follows: • Start channel: ch1 (which gi ves a scan sequ ence of “ ch1, ch0 ” ) • Sample interval: 12 µ s • Scan interv al: 65 ms The f irst channel will not be samp ...
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National Instruments PCI-1200 - page 62
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-10 © Nati onal Ins truments Corporat ion DAQ Rates Maximum DAQ rates (number of samples per second) are determined by the conversion period of the ADC plus the sample- and-hold acquisition time. During multichannel scann ing, the DAQ rates are further limited by the settling time of the inp ...
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National Instruments PCI-1200 - page 63
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-11 PCI-1200 Us er Manu al The recommended D A Q rates in T able 4-2 assume that voltage lev els on all the channels included in the scan sequence are within range for the giv en gain and ar e dri ven b y lo w-impedance sources. Analog Output The PCI-120 0 has t wo channels o ...
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National Instruments PCI-1200 - page 64
Chapter 4 Theor y of Op eratio n PCI-1200 U ser M anual 4-12 © Nati onal Ins truments Corporat ion vo ltage increment correspon ding to an LSB cha nge in the digital code word. For both outp uts: DAC T iming There are two mod es in which you can update the DAC voltages. In immediat e update mode , the DAC outpu t voltage is updated as soon as you ...
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National Instruments PCI-1200 - page 65
Chapter 4 Theor y of Op eratio n © Nationa l Instrume nts Cor poration 4-13 PCI-1200 Us er Manu al All three ports o n the 82C55A are TTL-compatible. When enabled, the digit al outp ut po rts a re ca pabl e of sinki ng 2. 5 mA of cu rre nt an d sou rci ng 2.5 mA of current on each digital I/O line. When the ports are not enabled, the digital I/O l ...
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National Instruments PCI-1200 - page 66
© Nationa l Instrume nts Cor poration 5-1 PCI-1200 Us er Manu al 5 Calibration This chapter discusses the calibration procedures for the PCI-1200 analog I/O circui try. However, the PCI-1200 i s factory cali brated, and N ational Instruments can recalibrate your unit if needed. To maintain the 12-bit accuracy of the PCI-1200 analog inp ut and anal ...
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National Instruments PCI-1200 - page 67
Chapter 5 Calibration PCI-1200 U ser M anual 5-2 © Nati onal Ins truments Corporat ion If you us e the PC I-1200 wit h NI-D A Q, LabVIEW , LabW indo ws/CVI, or other appl ication software, the f actory calibra tion constants are automatically loaded into the calibration D AC the f irst time a function pertaining to the PCI-1200 is ca lled, and aga ...
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National Instruments PCI-1200 - page 68
Chapter 5 Calibration © Nationa l Instrume nts Cor poration 5-3 PCI-1200 Us er Manu al Using the Calibration Function The Calibrate_1200 function and the 1200 Calib rate VI can either load the calibration DACs with the factory constan ts or the user-def ined constan ts stored in the EEPROM, or yo u can perform yo ur own calib ration and directly l ...
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National Instruments PCI-1200 - page 69
© Nationa l Instrume nts Cor poration A-1 PCI-1200 Us er Manu al A Specifications This appendix lists the PCI-12 00 specif ications. These specif ications are typical at 25 ° C unless other wise stated. Analog Inpu t Input Characte ristics Number of channels ...................... ......... Eight single-ended, eight pseudodif ferential or four di ...
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National Instruments PCI-1200 - page 70
Appendix A Spec ification s PCI-1200 U ser M anual A-2 © Nati onal Ins truments Corporat ion Max working v oltage ................... ...........In DIFF or NRSE (signal + comm on mode) ............. ...........mode, the nega tive input/AISENSE s hould rem ain within ±5 V of AGND (bipolar), or – 5 to 2 V (u nipo lar ). T he positive i nput sh ou ...
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National Instruments PCI-1200 - page 71
Appendix A Specific ations © Nationa l Instrume nts Cor poration A -3 PCI -1200 Use r Manual Powered off ........... ............ .............. 4.7 k Ω mi n Overload................ ................. ......... 4.7 k Ω min Input bias current .... ................. ........... ... ±100 pA Input offs et current .. ................. ............ ...
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National Instruments PCI-1200 - page 72
Appendix A Spec ification s PCI-1200 U ser M anual A-4 © Nati onal Ins truments Corporat ion Offset temperature coeff icient Pregain ...................... ............ ...........±15 µV/ ° C Postgain ............... ................. ...........±100 µV/ ° C Gain temperature coeff icient ..................±40 ppm/ ° C Explanatio n of Analo ...
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National Instruments PCI-1200 - page 73
Appendix A Specific ations © Nationa l Instrume nts Cor poration A -5 PCI -1200 Use r Manual Syst em n oise is the amount of noise seen b y the ADC when there is no signal present at the in put of the board. The amount of noise that is reported directly (without an y analysis) by the ADC is not necessarily the amount of real noise pre sent in the ...
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National Instruments PCI-1200 - page 74
Appendix A Spec ification s PCI-1200 U ser M anual A-6 © Nati onal Ins truments Corporat ion gain amplifier . After the input multiplexers are switched, the amplifier must be allo wed to settl e to the ne w input signal v alue to within 12-bit accuracy . The settling time is a function of the gain selected. Analog Outp ut Output Chara cteristics N ...
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National Instruments PCI-1200 - page 75
Appendix A Specific ations © Nationa l Instrume nts Cor poration A -7 PCI -1200 Use r Manual Power-on state ... ................. ................. ... 0 V Dynamic Characte ristics Settling time to full- scale range (FSR) .. 5 µs Stabili ty Offset temperature coefficient ...... ......... ±50 µV/ ° C Gain temperature coeff icient .............. ...
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National Instruments PCI-1200 - page 76
Appendix A Spec ification s PCI-1200 U ser M anual A-8 © Nati onal Ins truments Corporat ion Power-on state ...... ........... ................. ......All ports mode 0 input Protection .............. ........... ................. ...... – 0.5 to 5.5 V powered on, ±0.5 V powered off Data transfers ........ ................. .................Inte ...
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National Instruments PCI-1200 - page 77
Appendix A Specific ations © Nationa l Instrume nts Cor poration A -9 PCI -1200 Use r Manual Protection ................ ................. .............. – 0 .5 to 5.5 V powered o n, ±0.5 V powered off Data transfer ................. ................. ......... Interrupts, programmed I/O Digital T rigger Compatibility ..................... .... ...
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National Instruments PCI-1200 - page 78
© Nationa l Instrume nts Cor poration B -1 PCI -1200 Use r Manual B Customer Communication Fo r your con veni ence, this appendix cont ains forms t o help you g ather the i nformation nec essary to help us solv e your technical p roblems and a form you can us e to comment on the pro duct documentation. When you contact us , we need the information ...
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National Instruments PCI-1200 - page 79
PCI-1200 U ser M anual B-2 © Nati onal Ins truments Corporat ion Fax-on-Demand Support Fax -on-Demand is a 24-hou r information retrie v al system containin g a library of documen ts on a wide range of techn ical information. Y ou can access Fax- on-Demand f rom a touch-ton e telephone at 512 418 1111. E-Mail Support (Currently USA Only) Y ou can ...
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National Instruments PCI-1200 - page 80
T echnical Support Form Photocopy this form and update it each time y ou make chan ges to your sof tware or hardw are, and use the completed cop y of this form as a reference f or your current co nfigu ration. Completing this form accurately before contacting National Instruments fo r technical suppo rt helps our applications engineers answer your ...
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National Instruments PCI-1200 - page 81
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National Instruments PCI-1200 - page 82
PCI-1200 Hardware and Software Configuration Form Record the settings and re visions of y our hardw are and softw are on the line to the right of each item. Complete a ne w copy of this form each time you re vise your softw are or hardwa re conf iguration, and use this form as a reference for yo ur current conf iguration. Completing this for m accu ...
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National Instruments PCI-1200 - page 83
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National Instruments PCI-1200 - page 84
Documentation Comment Form Nation al Instrumen ts encourages you to commen t on the do cumentation s upplied wi th our prod ucts. This in formation h elps us pro vide quality pro ducts to m eet your needs. Title: PCI-1200 U ser Manual Editio n Date: July 199 8 Part Number : 320942C -01 Please comment on the completeness, clarity , and or ganization ...
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National Instruments PCI-1200 - page 85
© Nationa l Instrume nts Cor poration G-1 PCI-1200 Us er Manu al Glossar y Pref ix M eanings V alue p- pico 1 0 – 12 n- nan o- 10 – 9 µ- micro- 10 – 6 m- milli- 10 – 3 k- kilo- 10 3 M- meg a- 10 6 G- giga- 10 9 Numbers/Sy mbols ° degr ees > greater than ≥ greater than or equal to < less than – ne gati ve of, or minus ≠ not eq ...
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National Instruments PCI-1200 - page 86
Gloss ar y PCI-1200 U ser M anual G-2 © Nation al Ins truments Corporat ion A A amperes A C alternating current A CH <0..7> analog ch annel 0 thro ugh 7 sign als A CK* ackno w ledge input s ignal A/D analog-to-dig ital ADC analog-to-digital con verter — an electronic de vice, often an integ rated circuit, that con verts an analog voltage t ...
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National Instruments PCI-1200 - page 87
Glos sary © Nationa l Instrume nts Cor poration G-3 PCI-1200 Us er Manu al D D/A digital-to-analog D AC di gital-to-analog con verter — an electronic de vice, often an integ rated circuit, that con verts a digital number into a corresponding analog v oltage or current D AC OUTPUT UPD A TE D A C output u pdate si gnal D A C0OUT , D A C1OUT digita ...
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National Instruments PCI-1200 - page 88
Gloss ar y PCI-1200 U ser M anual G-4 © Nation al Ins truments Corporat ion EXTCONV* external con vert signal EXTTRIG e xternal trigger signal EXTUPD A TE* external upd ate signal F F farad FIFO first in first out memory buf fer FSR full-scale range ft feet G GA TB <0. .2> counte r B0, B1 , B2 ga te signa ls GA TE gate si gnal H hex h exadec ...
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National Instruments PCI-1200 - page 89
Glos sary © Nationa l Instrume nts Cor poration G-5 PCI-1200 Us er Manu al L LED light-emitt ing diode LSB least significant bit M m meters max maximum MB m egabytes of memo ry min. min utes min minim um MIO mult ifun ctio n I/O MSB most significant bit mux mul tipl exer — a switching device with multiple inputs th at connects one of its inpu ts ...
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National Instruments PCI-1200 - page 90
Gloss ar y PCI-1200 U ser M anual G-6 © Nation al Ins truments Corporat ion P P A, PB, PC <0..7 > port A, B , or C 0 through 7 signals PCI Peripheral Comp onent Interconnect — a high-performance expansion b us architecture originally de veloped b y Intel to replace ISA and EISA. It is achie ving widespread acceptance as a standar d for PCs ...
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National Instruments PCI-1200 - page 91
Glos sary © Nationa l Instrume nts Cor poration G-7 PCI-1200 Us er Manu al S samples scan one or mor e analog or digital input samples. T ypically , the number of input samples in a scan is eq ual to the num ber of channels in the inp ut group. For examp le, one pulse from the scan clock p roduces one s can which acquires one ne w sample from e ve ...
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National Instruments PCI-1200 - page 92
Gloss ar y PCI-1200 U ser M anual G-8 © Nation al Ins truments Corporat ion V Vv o l t s V in positiv e/negati ve input voltage V cm common-mod e noise VDC vo lts direct current V diff dif fere nti al inp ut v oltage V EXT external voltage VI virtual instru ment — (1) a combination o f hardware an d/or softw are elements, typically used with a P ...
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National Instruments PCI-1200 - page 93
© Nationa l Instrume nts Cor poration I-1 PCI-1200 Us er Manu al Index A A CH<7..0> signal definiti on (tab le), 3-3 input ranges (table) bipolar analog in put, 3-5 unipolar analog inpu t, 3-5 to 3-6 A CK* signal (table), 3-27 A/D FIFO, 4-7 A GND signal (table), 3-3 AISENSE/AIGND signal analog common s ignal, 3-5 definiti on (tab le), 3-3 an ...
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National Instruments PCI-1200 - page 94
Index PCI-1200 U ser M anual I -2 © National Ins truments C orporat ion analog in put signal c onnections bipo lar si gnal ran ge vs. gain (table), 3-5 common-mo de signal r ejection, 3-14 t o 3-15 dif ferential connections floatin g signal sou rces, 3-11 to 3-12 grounded signal s ources, 3-1 0 purpos e and use, 3- 9 when to use, 3-9 exceedin g ma ...
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National Instruments PCI-1200 - page 95
Index © Nationa l Instrume nts Cor poration I-3 PCI-1200 Us er Manu al input polarity , 2-3 anal og ou tput po lari ty , 2-3 controll ed acquisition mode, 4-8 Counter 0 on 82C53(A ) counter/timer , 3-19 Counter 1 on 82C53(A ) counter/timer , 3-19 counter/timers, 4-3 to 4-5 circuitry (f igure), 4-4 custom cabling, 1- 5 to 1-6 customer com municatio ...
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National Instruments PCI-1200 - page 96
Index PCI-1200 U ser M anual I -4 © National Ins truments C orporat ion anal og ou tp ut, A- 7 documentation con ventions used in manual, x Natio nal Inst rum ents do cumen tati on set, xi organiza tion of m anua l, ix related documentation, xii E EEPR OM contents, 5- 1 to 5-2 electronic support s ervices, B-1 to B- 2 e-mail suppo rt, B-2 en viron ...
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National Instruments PCI-1200 - page 97
Index © Nationa l Instrume nts Cor poration I-5 PCI-1200 Us er Manu al recommen ded input conf iguration s (table), 3 -8 single- ended connections (NRSE conf igurati on), 3-13 t o 3-14 I IBF sig nal (table) , 3-27 INL (integral nonlinearity), A-4 input configurations. See analog input conf igurati on. installation hardware installation, 2-1 softwa ...
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National Instruments PCI-1200 - page 98
Index PCI-1200 U ser M anual I -6 © National Ins truments C orporat ion PCI-12 00 block diag ra m, 4- 1 conf iguration. See conf iguration. custom cabling, 1- 5 to 1-6 features, 1- 1 installation, 2-1 optional equipment , 1-5 requirem ents for getting started , 1-1 to 1-2 softw are programming choices National Instr uments application softw are, 1 ...
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National Instruments PCI-1200 - page 99
Index © Nationa l Instrume nts Cor poration I-7 PCI-1200 Us er Manu al pins , 3- 18 to 3-19 timing specif ications, 3- 27 to 3- 30 digit al I /O sig nal co nnec tion s, 3-16 t o 3-18 logical i nputs and ou tputs, 3-17 t o 3-18 Port C pin c onne ctio ns, 3-18 I/O connector e xceeding maximum ratings (caution) , 3-1 pin a ssig nmen ts (fig ure) , 3- ...
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National Instruments PCI-1200 - page 100
Index PCI-1200 U ser M anual I -8 © National Ins truments C orporat ion general-p urpose timi ng signal connections e ven t-counting, 3-2 3 with external switch gating (f igure), 3- 24 frequenc y measurem ent, 3-24 t o 3-25 connections for measurement applicatio n (f igure), 3-25 GA TE, CLK, and OUT signals, 3-23 t o 3-26 pins , 3- 18 to 3-19 puls ...
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