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National Instruments 700 manual

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Table of contents for the manual

  • Page 1

    © Copyright 1994, 1996 National Instruments Corporation. All Rights Reserved. DAQCard ™ -700 User Manual Multifunction I/O Board for the PCMCIA Bus January 1996 Edition Part Number 320676C-01[...]

  • Page 2

    National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 Technical support fax: (800) 328-2203 (512) 794-5678 Branch Offices: Australia 03 9 879 9422, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Canada (Ontario) 519 622 9310, Canada (Québec) 514 694 8521, Denmark 45 76 26 00, Finland 90 527 2321[...]

  • Page 3

    Limited Warranty The DAQCard-700 is warranted against defects in materials and workmanship 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 that proves to be defective during the warranty period. This warranty includes parts and[...]

  • Page 4

    WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in treatment and diagnosis of humans. Applications of National Instruments products involving medical or clinical treatment can create a pot[...]

  • Page 5

    © National Instruments Corporation v DAQCard-700 User Manual Contents ___________________________________________________ About This Manual ............................................................................................................. ix Organization of This Manual ....................................................................[...]

  • Page 6

    Contents DAQCard-700 User Manual vi © National Instruments Corporation Differential Connection Considerations (DIFF Configuration) ............. 3-8 Differential Connections for Grounded Signal Sources ............ 3-9 Differential Connections for Floating Signal Sources ............... 3-10 Common-Mode Signal Rejection Considerations ............[...]

  • Page 7

    Contents © National Instruments Corporation vii DAQCard-700 User Manual Figures Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware .............................................................................................. 1-3 Figure 2-1. A Typical Configuration for the DAQCard-700 ......................[...]

  • Page 8

    © National Instruments Corporation ix DAQCard-700 User Manual About This Manual This manual describes the mechanical and electrical aspects of the DAQCard-700 and contains information concerning its installation and operation. The DAQCard-700 is a compact, low-cost, low-power analog input, digital, and timing I/O card for computers that are equipp[...]

  • Page 9

    About This Manual DAQCard-700 User Manual x © National Instruments Corporation Conventions Used in This Manual The following conventions are used in this manual: bold italic Bold italic text denotes a note, caution, or warning. italic Italic text denotes emphasis, a cross reference, or an introduction to a key concept. Macintosh Macintosh refers t[...]

  • Page 10

    About This Manual © National Instruments Corporation xi DAQCard-700 User Manual • Software documentation—Examples of software documentation you may have are the LabVIEW and LabWindows/CVI manual sets and the NI-DAQ documentation (a 4.6.1 or earlier version of NI -DAQ supports LabWindows for DOS). After you set up your hardware system, use eith[...]

  • Page 11

    © National Instruments Corporation 1-1 DAQCard-700 User Manual Chapter 1 Introduction This chapter describes the DAQCard-700; lists what you need to get started, software programming choices, and optional equipment; and explains how to unpack the DAQCard-700. About the DAQCard-700 Thank you for your purchase of the National Instruments DAQCard-700[...]

  • Page 12

    Introduction Chapter 1 DAQCard-700 User Manual 1-2 © National Instruments Corporation What You Need to Get Started To set up and use your DAQCard-700, you will need the following: DAQCard-700 One of the following I/O cables (must be purchased separately): PR50 -50M ribbon cable (6 in.) PR50 -50F ribbon cable (0.5, 1, or 2 m) Connector block for si[...]

  • Page 13

    Chapter 1 Introduction © National Instruments Corporation 1-3 DAQCard-700 User Manual NI -DAQ Driver Software The NI-DAQ driver software is included at no charge with all National Instruments DAQ hardware. NI-DAQ is not packaged with SCXI or accessory products, except for the SCXI-1200. NI -DAQ has an extensive library of functions that you can ca[...]

  • Page 14

    Introduction Chapter 1 DAQCard-700 User Manual 1-4 © National Instruments Corporation Register-Level Programming The final option for programming any National Instruments DAQ hardware is to write register- level software. Writing register-level programming software can be very time-consuming and inefficient and is not recommended for most users. E[...]

  • Page 15

    © National Instruments Corporation 2-1 DAQCard-700 User Manual Chapter 2 Installation and Configuration This chapter describes how to install and software configure the DAQCard-700. Installation Your computer should be equipped with Card and Socket Services 2.0 or later. The DAQCard-700 requires a 32 -byte I/O address window and one interrupt leve[...]

  • Page 16

    Installation and Configuration Chapter 2 DAQCard-700 User Manual 2-2 © National Instruments Corporation PCMCIA Socket Portable Computer I/O Cable INSERT CARD NATIONAL INSTRUMENTS The Software is the Instrument ® CB-50 I/O Signals DAQCard ™ -700 Figure 2-1. A Typical Configuration for the DAQCard-700 The DAQCard-700 is now installed. You are [...]

  • Page 17

    Chapter 2 Installation and Configuration © National Instruments Corporation 2-3 DAQCard-700 User Manual If you are using LabWindows/CVI, the software installation instructions are in Part 1, Introduction to LabWindows/CVI , of the Getting Started with LabWindows/CVI manual. After you have installed LabWindows/CVI, refer to Chapter 1, Configuring L[...]

  • Page 18

    Installation and Configuration Chapter 2 DAQCard-700 User Manual 2-4 © National Instruments Corporation Table 2-2. Analog Input Modes for the DAQCard -700 Analog Input Modes Description RSE Referenced single-ended mode provides 16 single-ended inputs referenced to analog ground (default setting). DIFF Differential mode provides eight differential [...]

  • Page 19

    Chapter 2 Installation and Configuration © National Instruments Corporation 2-5 DAQCard-700 User Manual Digital I/O Configuration The DAQCard-700 always uses one 8-bit digital output port and one 8 -bit digital input port. Counter Configuration You can use the MSM82C54 counter/timers for general-purpose applications, such as pulse and square wave [...]

  • Page 20

    © National Instruments Corporation 3-1 DAQCard-700 User Manual Chapter 3 Signal Connections This chapter describes the signals on the DAQCard-700 I/O connector, as well as typical cable setups. I/O Connector Figure 3-1 shows the pin assignments for the DAQCard-700 I/O connector. This connector is attached to the ribbon cable that extends from the [...]

  • Page 21

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-2 © National Instruments Corporation 12 34 56 78 9 10 1 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 DOUT3 DOUT2 DOUT1 DOUT0 DIN7 DIN6 DIN5 DIN4 DIN3 DIN2 DIN1 DIN0 NC NC DGND ACH15 ACH7 ACH14 ACH6 ACH13 ACH5 ACH12 ACH4 [...]

  • Page 22

    Chapter 3 Signal Connections © National Instruments Corporation 3-3 DAQCard-700 User Manual Signal Connection Descriptions Pin Signal Name Direction Description 1–2 AIGND — Analog Input Ground—These pins are connected to the analog input ground signal. 3–18 ACH<0..15> Input Analog Input Channels 0 through 15—These channels are in s[...]

  • Page 23

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-4 © National Instruments Corporation The connector pins can be grouped into analog input signal pins, digital I/O signal pins, and timing I/O signal pins. Signal connection guidelines for each of these groups are included in the following pages. Analog Input Signal Connections Pins 1 through 1[...]

  • Page 24

    Chapter 3 Signal Connections © National Instruments Corporation 3-5 DAQCard-700 User Manual isolation amplifiers. The ground reference of a floating signal must be tied to the DAQCard-700 analog input ground to establish a local or onboard reference for the signal. Otherwise, the measured input signal varies or appears to float. An instrument or d[...]

  • Page 25

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-6 © National Instruments Corporation - V in V V - + Instrumentation Amplifier V = [ - ] GAIN in + - in + - + V in m Measured V oltage V m * Figure 3-2. DAQCard -700 Instrumentation Amplifier The DAQCard-700 instrumentation amplifier applies common-mode voltage rejection and presents a high-inp[...]

  • Page 26

    Chapter 3 Signal Connections © National Instruments Corporation 3-7 DAQCard-700 User Manual Recommended Input Configurations The following sections discuss the use of single-ended and differential measurements and considerations for measuring both floating and ground-referenced signal sources. Table 3-1 summarizes the recommended input configurati[...]

  • Page 27

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-8 © National Instruments Corporation + + + - - - V M Measured V oltage Signal Source ACH<0..15> Input Multiplexer Operational Amplifier I/O Connector 3 4 5 18 1, 2 DAQCard-700 AIGND + - + - V S1 V S2 V S3 Figure 3-3. Single-Ended Analog Input Signal Connections Differential Connection Co[...]

  • Page 28

    Chapter 3 Signal Connections © National Instruments Corporation 3-9 DAQCard-700 User Manual Differential signal connections reduce picked-up noise and increase common-mode signal and noise rejection. With these connections, input signals can float within the common-mode limits of the input instrumentation amplifier. Differential Connections for Gr[...]

  • Page 29

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-10 © National Instruments Corporation Differential Connections for Floating Signal Sources Figure 3-5 shows how to connect a floating signal source to an DAQCard -700 card configured for DIFF input. Configuration instructions are included in the Input Configurations section earlier in this cha[...]

  • Page 30

    Chapter 3 Signal Connections © National Instruments Corporation 3-11 DAQCard-700 User Manual the instrumentation amplifier contributes a DC offset voltage at the input. The amplifier has a maximum input offset current of ± 0.75 nA and a typical offset current drift of ± 1.5 pA/ ° C. Multiplied by the 100 k Ω resistor, this current contributes[...]

  • Page 31

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-12 © National Instruments Corporation Digital I/O Signal Connections Pins 22 through 37 of the I/O connector are digital I/O signal pins. Pins 22 through 29 are digital input pins. Pins 30 through 37 are digital output pins. Pins 19 and 50 are digital ground pins. The following specifications [...]

  • Page 32

    Chapter 3 Signal Connections © National Instruments Corporation 3-13 DAQCard-700 User Manual TTL Signal Digital Input Port Digital Output Port 22 DIN0 19 DGND I/O Connector DAQCard-700 LED +5 V +5 V 29 DIN7 30 DOUT0 Figure 3-6. Digital I/O Signal Connections Power Connections Pin 49 of the I/O connector sends +5 V from the PCMCIA I/O channel power[...]

  • Page 33

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-14 © National Instruments Corporation Timing Connections Pins 38 through 48 of the I/O connector are connections for timing I/O signals. The DAQCard-700 timing I/O uses an MSM82C54 counter/timer integrated circuit. All three counters of the MSM82C54 are available at the I/O connector. One of t[...]

  • Page 34

    Chapter 3 Signal Connections © National Instruments Corporation 3-15 DAQCard-700 User Manual programmed for various operations. The only exceptions are counter 0, which has an internal 1 MHz clock, and counter 1, which can also be configured to use this clock. The MSM82C54 counter/timer is described briefly in Chapter 4, Theory of Operation. For m[...]

  • Page 35

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-16 © National Instruments Corporation To measure time lapse, program a counter to be edge gated. Apply an edge to the counter GATE input to start the counter. Program the counter to start counting after receiving a low-to-high edge. The time lapse since receiving the edge equals the counter va[...]

  • Page 36

    Chapter 3 Signal Connections © National Instruments Corporation 3-17 DAQCard-700 User Manual • Absolute maximum voltage input rating -0.5 to 5.0 V with respect to DGND • MSM82C54 digital input specifications (referenced to DGND): –V IH input logic high voltage 2.2 V minimum –V IL input logic low voltage 0.8 V maximum – Input load current[...]

  • Page 37

    Signal Connections Chapter 3 DAQCard-700 User Manual 3-18 © National Instruments Corporation Cabling National Instruments currently offers two different cables for use with the DAQCard-700, the PR -50-50F and the PR-50 -50M. National Instruments also offers a cable termination accessory, the CB -50, for use with the DAQCard-700. This kit includes [...]

  • Page 38

    © National Instruments Corporation 4-1 DAQCard-700 User Manual Chapter 4 Theory of Operation This chapter includes an overview of the DAQCard -700 and explains the operation of each functional unit making up the DAQCard-700. Functional Overview The block diagram in Figure 4-1 shows a functional overview of the DAQCard-700. FROM A/D FIFO CLK<1..[...]

  • Page 39

    Theory of Operation Chapter 4 DAQCard-700 User Manual 4-2 © National Instruments Corporation The following are the major components making up the DAQCard -700: • PCMCIA I/O channel interface circuitry • Analog input circuitry • Digital I/O circuitry • Timing I/O circuitry Data acquisition functions can be executed by using the analog input[...]

  • Page 40

    Chapter 4 Theory of Operation © National Instruments Corporation 4-3 DAQCard-700 User Manual When you first insert the card, the system examines information stored in the DAQCard -700 Card Information Structure. This data is used to configure the card appropriately for the system in which it is used. When the system has assigned the card to a sect[...]

  • Page 41

    Theory of Operation Chapter 4 DAQCard-700 User Manual 4-4 © National Instruments Corporation CLK0 A/D Data EXTCONV* 12 16 Data A/D RD CONV A V AIL PCMCIA I/O Channel OUT0 Instrumentation Amplifier Input Mux1 Dual (8-Channel Single- Ended) 8 8 Input Mux2 (4-Channel) Buf fer 512-W ord FIFO, Sign Extension 12-Bit Sampling ADC PCMCIA I/O Channel Inter[...]

  • Page 42

    Chapter 4 Theory of Operation © National Instruments Corporation 4-5 DAQCard-700 User Manual The A/D FIFO generates a signal that indicates when it contains A/D conversion data. The state of this signal can be read from the Status Register. The output from the ADC is a two's complement number ranging from -2,048 to 2,047. The output from the [...]

  • Page 43

    Theory of Operation Chapter 4 DAQCard-700 User Manual 4-6 © National Instruments Corporation Data Acquisition Rates The maximum data acquisition rate (number of samples per second) is determined by the conversion period of the ADC plus the acquisition time of its track-and-hold stage. During multichannel scanning, the data acquisition rate is furt[...]

  • Page 44

    Chapter 4 Theory of Operation © National Instruments Corporation 4-7 DAQCard-700 User Manual Digital I/O Circuitry The DAQCard-700 has 16 digital I/O lines that are TTL-compatible. Pins DIN<0..7> of the I/O connector are digital input lines, and pins DOUT<0..7> are digital output lines. These lines are monitored or driven by the Digita[...]

  • Page 45

    Theory of Operation Chapter 4 DAQCard-700 User Manual 4-8 © National Instruments Corporation Timing I/O Circuitry The DAQCard-700 uses an MSM82C54 counter/timer integrated circuit for data acquisition timing and for general-purpose timing I/O functions. Three counters of the MSM82C54 are available for general use, but one of them can be used inter[...]

  • Page 46

    Chapter 4 Theory of Operation © National Instruments Corporation 4-9 DAQCard-700 User Manual Counter CLK GA TE OUT Figure 4-6. Counter Block Diagram Each counter has a clock input pin, a gate input pin, and an output pin labeled CLK, GATE, and OUT, respectively. The MSM82C54 counters are numbered zero through two, and their GATE, CLK, and OUT pins[...]

  • Page 47

    © National Instruments Corporation A-1 DAQCard-700 User Manual Appendix A Specifications This appendix lists the specifications of the DAQCard-700. These specifications are typical at 25 ° C unless otherwise noted. The operating temperature range is 0 ° to 70 ° C. Analog Input Input Characteristics Number of channels ...........................[...]

  • Page 48

    Specifications Appendix A DAQCard-700 User Manual A-2 © National Instruments Corporation Dynamic Characteristics Settling time ± 0.024% accuracy ( ± 1 LSB) for full-scale step ............................................ 25 µ s max at ± 10 V, ± 5 V 10 µ s at ± 2.5 V (RSE) System noise ........................................................[...]

  • Page 49

    Appendix A Specifications © National Instruments Corporation A-3 DAQCard-700 User Manual Power Requirement +5 VDC ( ± 5%) ....................................................................... 100 mA in operational mode 70 mA in power-down mode Note: These power usage figures do not include the power used by external devices that you have connec[...]

  • Page 50

    © National Instruments Corporation B-1 DAQCard-700 User Manual Appendix B Differences between the PC-LPM-16 and the DAQCard-700 This appendix contains a summary of differences between the PC-LPM-16 and the DAQCard-700 that may be relevant to you if you are a current PC-LPM-16 user. For a summary of programming differences, refer to the DAQCard-700[...]

  • Page 51

    © National Instruments Corporation C-1 DAQCard-700 User Manual Appendix C PC Card Questions and Answers This appendix contains a list of common questions and answers relating to PC Card (PCMCIA) operation. The questions are grouped according to the type of information requested. You may find this information useful if you are having difficulty wit[...]

  • Page 52

    PC Card Questions and Answers Appendix C DAQCard-700 User Manual C-2 © National Instruments Corporation 3. Is there a way I can conserve power on my PC Card when it is not in use? Yes. If you are using NI-DAQ for PC compatibles version 4.8.0 or later, a DOS utility called DAQPOWER_EXE will switch all National Instruments PC Cards between normal mo[...]

  • Page 53

    Appendix C PC Card Questions and Answers © National Instruments Corporation C-3 DAQCard-700 User Manual Keep in mind that utilities such as MSD.EXE will sometimes report that an interrupt is in use when it really is not. For example, if the computer has one serial port, COM1, and one parallel port, LPT1, you know that IRQs 4 and 7 are probably in [...]

  • Page 54

    © National Instruments Corporation D- 1 DAQCard-700 User Manual Appendix D Power-Management Modes This appendix describes the power-management modes of the DAQCard-700. • Normal Mode—This is the normal operating mode of the DAQCard -700 in which all the circuits are fully functional. This mode draws about 100 mA from the 5 V supply (about 500 [...]

  • Page 55

    © National Instruments Corporation E-1 DAQCard-700 User Manual Appendix E Customer Communication ___________________________________________________ For your convenience, this appendix contains forms to help you gather the information necessary to help us solve technical problems you might have as well as a form you can use to comment on the produ[...]

  • Page 56

    Technical Support Form ___________________________________________________ Photocopy this form and update it each time you make changes to your software or hardware, and use the completed copy of this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support help[...]

  • Page 57

    DAQCard-700 Hardware and Software Configuration Form ___________________________________________________ Record the settings and revisions of your hardware and software on the line to the right of each item. Complete a new copy of this form each time you revise your software or hardware configuration, and use this form as a reference for your curre[...]

  • Page 58

    Documentation Comment Form ___________________________________________________ National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. Title: DAQCard™-700 User Manual Edition Date: January 1996 Part Number: 320676C-01 Please comment on t[...]

  • Page 59

    © National Instruments Corporation Glossary-1 DAQCard-700 User Manual Glossary ___________________________________________________ Prefix Meaning Value p- pico- 10 -12 n- nano- 10 -9 µ - micro- 10 -6 m- milli- 10 -3 k- kilo- 10 3 M- mega- 10 6 G- giga- 10 12 ° degrees Ω ohms % percent A amperes AC alternating current ACH analog input channel s[...]

  • Page 60

    Glossary DAQCard-700 User Manual Glossary-2 © National Instruments Corporation hex hexadecimal Hz hertz in. inches I/O input/output ISA Industry Standard Architecture LED light-emitting diode LSB least significant bit MB megabytes of memory MSB most significant bit NC not connected (signal) NRSE nonreferenced single ended OUT output signal PCMCIA [...]

  • Page 61

    © National Instruments Corporation Index- 1 DAQCard-700 User Manual Index A ACH<0..15> signal, 3-3 AIGND signal, 3-3 analog input circuitry block diagram, 4-4 theory of operation, 4-4 analog input configuration analog input modes, 2-3 to 2-4 default settings (table), 2-3 DIFF input definition (table), 2-4 description, 2-4 exceeding maximum r[...]

  • Page 62

    Index DAQCard-700 User Manual Index- 2 © National Instruments Corporation block diagram, 4-1 compared with PC-LPM-16, B-1 features, 1-1 major components, 4-1 software programming choices LabVIEW and LabWindows/CVI application software, 1-2 NI-DAQ driver software, 1-3 register-level programming, 1-4 unpacking, 1-4 what you need to get started, 1-2 [...]

  • Page 63

    Index © National Instruments Corporation Index- 3 DAQCard-700 User Manual I input configurations, 3-5 to 3-7 DIFF definition (table), 2-4 purpose, 2-4 differential mode, 3-6 instrumentation amplifier illustration, 3-6 purpose, 3-6 recommended input configurations (table), 3-7 RSE definition (table), 2-4 purpose, 2-4 single-ended mode, 3-6 installa[...]

  • Page 64

    Index DAQCard-700 User Manual Index- 4 © National Instruments Corporation analog input signal connections differential (DIFF) connections, 3-8 to 3-11 common-mode signal rejection considerations, 3-11 floating signal sources, 3-10 to 3-11 grounded signal sources, 3-9 differential input mode, 3-6 exceeding maximum input rating (warning), 3-4 floati[...]

  • Page 65

    Index © National Instruments Corporation Index- 5 DAQCard-700 User Manual EXTCONV* signal timing (illustration), 3-14 general-purpose counter and timing signal connections, 3-14 to 3-17 event-counting applications, 3-15 illustration, 3-15 frequency measurement, 3-16 illustration, 3-16 illustration, 3-17 pulse and square wave generation, 3 -15 puls[...]