Manuale d’uso / di manutenzione del prodotto 700 del fabbricante National Instruments
Vai alla pagina of 65
© 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.
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,.
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.
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.
© National Instruments Corporation v DAQCard-700 User Manual Contents ___________________________________________________ About This Manual ............................................................................................................. ix Organization of This Manual .
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 .
Contents © National Instruments Corporation vii DAQCard-700 User Manual Figures Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware ..............................................................................
© 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.
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.
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).
© 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.
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.
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.
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.
© 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.
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.
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.
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).
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.
© 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
© 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.
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 circui.
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.
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 In.
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.
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.
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.
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.
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.
© 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.
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.
Appendix A Specifications © National Instruments Corporation A-3 DAQCard-700 User Manual Power Requirement +5 VDC ( ± 5%) ...........................
© 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.
© 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.
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.
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.
© 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.
© National Instruments Corporation E-1 DAQCard-700 User Manual Appendix E Customer Communication ___________________________________________________ For your convenience, this appendix contains forms.
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.
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.
Documentation Comment Form ___________________________________________________ National Instruments encourages you to comment on the documentation supplied with our products.
© National Instruments Corporation Glossary-1 DAQCard-700 User Manual Glossary ___________________________________________________ Prefix Meaning Value p- pico- 10 -12 n- nano- 10 -9 µ - micro- 10 -.
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 lea.
© 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 in.
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 .
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.
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, 3-1.
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-countin.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il National Instruments 700 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del National Instruments 700 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso National Instruments 700 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul National Instruments 700 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il National Instruments 700, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del National Instruments 700.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il National Instruments 700. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo National Instruments 700 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
