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DAQ DAQCard-1200 User Manual

Multifunction i/o card for the pcmcia bus
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DAQ
™
DAQCard
-1200
User Manual
Multifunction I/O Card for
the PCMCIA Bus
DAQCard-1200 User Manual
December 2001 Edition
Part Number 320936C-01

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Summary of Contents for DAQ DAQCard-1200

  • Page 1 ™ DAQCard -1200 User Manual Multifunction I/O Card for the PCMCIA Bus DAQCard-1200 User Manual December 2001 Edition Part Number 320936C-01...
  • Page 2 Support Worldwide Technical Support and Product Information ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 683 0100 Worldwide Offices Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Brazil 011 3262 3599, Canada (Calgary) 403 274 9391, Canada (Montreal) 514 288 5722, Canada (Ottawa) 613 233 5949, Canada (Québec) 514 694 8521, Canada (Toronto) 905 785 0085, China (Shanghai) 021 6555 7838, China (ShenZhen) 0755 3904939, Czech Republic 02 2423 5774, Denmark 45 76 26 00, Finland 09 725 725 11,...
  • Page 3 Warranty The DAQCard-1200 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.
  • Page 4 Compliance FCC/Canada Radio Frequency Interference Compliance* Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless communications from interference. The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrial-commercial locations only) or Class B (for use in residential or commercial locations).
  • Page 5 Canadian Department of Communications This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. Compliance to EU Directives Readers in the European Union (EU) must refer to the Manufacturer’s Declaration of Conformity (DoC) for information** pertaining to the CE Mark compliance scheme.

  • Page 6: Table Of Contents

    NI-DAQ......................1-2 National Instruments ADE Software...............1-4 Optional Equipment .......................1-4 Unpacking ........................1-5 Safety Information ......................1-5 Chapter 2 Installing and Configuring the DAQCard-1200 Installing the Software ....................2-1 Installing the Hardware....................2-1 Configuring the DAQCard-1200 ...................2-3 Configuring Analog Input ................2-3 Analog Input Polarity................2-4 Analog Input Mode ................2-4 DIFF Input Mode (Four Channels)........2-4...
  • Page 7 PC Card I/O Channel Interface Circuitry ..............4-2 Timing ........................... 4-3 Analog Input........................4-5 Analog Input Circuitry ..................4-6 Data Acquisition Timing................. 4-8 Data Acquisition Operation .............. 4-8 Round-Robin Data Acquisition ............4-8 Interval Data Acquisition..............4-8 Data Acquisition Rates..................4-9 DAQCard-1200 User Manual viii ni.com...
  • Page 8 Chapter 5 Calibration Loading Calibration Constants ..................5-1 Self-Calibration......................5-2 External Calibration .......................5-2 Appendix A Specifications Appendix B Differences among the Lab-PC+, the DAQPad-1200, and the DAQ- Card-1200 Appendix C Common Questions Appendix D Technical Support Resources Glossary Index © National Instruments Corporation...

  • Page 9: About This Manual

    This manual describes the mechanical and electrical aspects of the National Instruments (NI) DAQCard-1200 and contains information concerning its installation and operation. The DAQCard-1200 is a compact, low-cost, low-power analog input (AI), analog output (AO), digital I/O (DIO), and timing I/O (TIO) card for IBM PC/XT, PC AT, and compatible computers that are equipped with a PCMCIA Type II PC Card socket.

  • Page 10: National Instruments Documentation

    National Instruments Documentation The DAQCard-1200 User Manual is one piece of the documentation set for the data acquisition (DAQ) system. You could have any of several types of documentation depending on the hardware and software in your system.

  • Page 11: Introduction

    About the DAQCard-1200 The DAQCard-1200 is a low-cost, low-power AI, AO, DIO, and TIO card for computers equipped with a Type II PC Card slot. The card contains a 12-bit, successive-approximation A/D converter (ADC) with eight inputs, which you can configure as eight single-ended or four differential channels.

  • Page 12: What You Need To Get Started

    Using NI-DAQ, you can start your application quickly and easily without having to program the card at the register level. Utilities shipped with NI-DAQ also can help you conserve additional power by configuring the DAQCard-1200 in the power-down mode.
  • Page 13 DAQ Hardware Computer or Workstation Figure 1-1. The Relationship Between the Programming Environment, NI-DAQ, and the Hardware To download a free copy of the most recent version of NI-DAQ, click Download Software at ni.com © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 14: National Instruments Ade Software

    Using LabVIEW or Measurement Studio greatly reduces the development time for your data acquisition and control application. Optional Equipment NI offers a variety of products to use with the DAQCard-1200, including cables, connector blocks, and other accessories, including the following items: •...

  • Page 15: Unpacking

    Remove the DAQCard-1200 from the package and inspect the device for loose components or any sign of damage. Notify NI if the DAQCard-1200 appears damaged in any way. Do not install a damaged device into your computer.
  • Page 16 MAINS is defined as the electricity supply system to which the equipment concerned is designed to be connected either for powering the equipment or for measurement purposes. DAQCard-1200 User Manual ni.com...
  • Page 17 Installation category IV is for measurements performed at the source of the low-voltage (<1,000 V) installation. Examples of category IV are electric meters, and measurements on primary overcurrent protection devices and ripple-control units. Below is a diagram of a sample installation. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 18: Installing And Configuring The Daqcard-1200

    NI-DAQ according to the instructions on the CD and the DAQ Quick Start Guide included with the DAQCard-1200. Note It is important to install NI-DAQ before installing the DAQCard-1200 to ensure that the DAQCard-1200 is properly detected. Installing the Hardware The following are general installation instructions.

  • Page 19: Chapter 2 Installing And Configuring The

    Be careful not to put strain on the I/O cable when inserting it into and removing it from the DAQCard-1200. Always grasp the cable by the connector you are plugging or unplugging. Never pull directly on the I/O cable to unplug it from the DAQCard-1200.

  • Page 20: Configuring The Daqcard-1200

    Connections, including power signals to ground and vice versa, that exceed any of the maximum signal ratings on the DAQCard-1200 can damage the card and computer. NI is not liable for any injuries or damage resulting from incorrect signal connections.

  • Page 21: Analog Input Polarity

    Installing and Configuring the DAQCard-1200 Analog Input Polarity You can configure the AI setting on the DAQCard-1200 for either a unipolar range (0 to 10 V) or a bipolar range (–5 to +5 V). If you select a bipolar range, the two’s complement coding mode is selected. In this mode, –5 V input corresponds to F800 hex (–2,048 decimal) and +5 V...

  • Page 22: Rse Input Mode (Eight Channels, Default Setting)

    RSE Input Mode (Eight Channels, Default Setting) RSE input mode means that all input signals are referenced to a common ground point that is also tied to the DAQCard-1200 AI ground. The RSE mode is useful for measuring floating signal sources. Refer to the...

  • Page 23: Analog Output Polarity

    Signals. Caution The DAQCard-1200 DIO lines are not pulled up or pulled down. If you are using these lines as digital outputs, add 10 kΩ resistors to +5 V or DGND (depending on your application) to the DIO line(s) you are using.

  • Page 24: Connecting The Signals

    Connections, including power signals to ground and vice versa, that exceed any of the maximum ratings of input or output signals on the DAQCard-1200 can damage the DAQCard-1200 and the computer. NI is not liable for damage resulting from any such signal connections.
  • Page 25 35 36 37 38 EXTTRIG 39 40 EXTUPDATE* EXTCONV* 41 42 GATB0 OUTB0 43 44 OUTB1 GATB1 45 46 OUTB2 CLKB1 47 48 CLKB2 GATB2 49 50 +5 V DGND Figure 3-1. DAQCard-1200 I/O Connector Pin Assignments DAQCard-1200 User Manual ni.com...

  • Page 26: Signal Connection Descriptions

    Chapter 3 Connecting the Signals Signal Connection Descriptions Table 3-1 describes the connector pins on the DAQCard-1200 front I/O connector by pin number and gives the signal name and information about each signal connector pin. Table 3-1. Signal Descriptions Pins...

  • Page 27: Connecting Analog Input Signals

    Caution Exceeding the input signal range distorts input signals. Exceeding the maximum input voltage rating may damage the DAQCard-1200 and the computer. NI is not liable for damage resulting from such signal connections. DAQCard-1200 User Manual...
  • Page 28 ±50 mV 0 to 100 mV How you connect analog input signals to the DAQCard-1200 depends on how you configure the card analog input circuitry and the type of input signal source. With different DAQCard-1200 input modes, you can use the instrumentation amplifier in different ways.

  • Page 29: Types Of Signal Sources

    A/D conversions. All signals must be referenced to ground, either at the source device or at the DAQCard-1200. If you have a floating source, you must use a ground-referenced input connection at the DAQCard-1200. If you have a grounded source, you must use a nonreferenced input connection at the DAQCard-1200.

  • Page 30: Input Configurations

    The connection instructions that follow for grounded signal sources eliminate this ground potential difference from the measured signal. If you power both the DAQCard-1200 and the PC with a floating power source, such Note as a battery, the system may be floating with respect to earth ground. In this case, treat all the signal sources as floating sources.
  • Page 31 You should use the DIFF input configuration when any of the following conditions are present: • Input signals are low level (less than 1 V). • Leads connecting signals to the DAQCard-1200 are greater than 15 ft. • Any input signal requires a separate ground-reference point or return signal. •...
  • Page 32 Paths AGND Front I/O Connector DAQCard-1200 in DIFF Configuration Figure 3-3. Differential Input Connections for Floating Sources The 100 kΩ resistors shown in Figure 3-3 create a return path to ground for the bias currents of the instrumentation amplifier. If there is no return path, the instrumentation amplifier bias currents cause stray capacitances, resulting in uncontrollable drift and possible saturation in the amplifier.
  • Page 33 Figure 3-4. Differential Input Connections for Grounded Signal Sources With this connection type, the instrumentation amplifier rejects both the common-mode noise in the signal and the ground-potential difference between the signal source and the DAQCard-1200 ground, which is shown as V in Figure 3-4.

  • Page 34: Single-Ended Connection Considerations (Rse And Nrse Input Modes)

    • Input signals are high level (greater than 1 V). • Leads connecting the signals to the DAQCard-1200 are less than 15 ft. • All input signals share a common reference signal (at the source). If any of the preceding criteria are not met, you should use DIFF input mode.
  • Page 35 If you measure a grounded signal source with a single-ended configuration, you must configure the DAQCard-1200 in the NRSE input configuration. The signal is connected to the positive input of the DAQCard-1200 instrumentation amplifier, and the signal local ground reference is connected to the negative input of the DAQCard-1200 instrumentation amplifier.

  • Page 36: Common-Mode Signal Rejection Considerations

    The common-mode input range of the DAQCard-1200 instrumentation amplifier is the magnitude of the greatest common-mode signal that can be rejected. The common-mode input range for the DAQCard-1200 depends on the size of the differential input signal (V – V...

  • Page 37: Connecting Analog Output Signals

    Unipolar output 0 to 10 V – Figure 3-7 shows how to make AO signal connections. DAC0OUT Channel 0 Load – AGND Load DAC1OUT Channel 1 Analog Output Channels Front I/O Connector DAQCard-1200 Figure 3-7. Analog Output Signal Connections DAQCard-1200 User Manual 3-14 ni.com...

  • Page 38: Connecting Digital I/O Signals

    Connecting Digital I/O Signals Caution The DAQCard-1200 DIO lines are not pulled up or pulled down. If you are using these lines as digital outputs, add 10 kΩ resistors to +5 V or DGND (depending on your application) to the DIO line(s) you are using.
  • Page 39 The 82C55A has only one configuration register. Therefore, you must program the Note direction (input/output) of all ports before writing or reading from them to prevent data loss caused by the ports being reset to their default state. DAQCard-1200 User Manual 3-16 ni.com...

  • Page 40: Port C Pin Connections

    Note between different documentation sources. The 82C55A terminology refers to the different 82C55A configurations as modes, whereas NI-DAQ and LabVIEW documentation refers to them as handshaking and no handshaking. These signal assignments are the same for all four 82C55A PPIs.

  • Page 41: Timing Specifications

    Acknowledge Input—A low signal on this handshaking line indicates that the data written from the specified port has been accepted. This signal is primarily a response from the external device that it has received the data from the DAQCard-1200. OBF* Output Output Buffer Full—A low signal on this handshaking line indicates...

  • Page 42: Mode 1 Input Timing

    — RD* = 0 to INTR = 0 — RD* = 1 to IBF = 0 — All timing values are in nanoseconds. Figure 3-9. Mode 1 Timing Specifications for Input Transfers © National Instruments Corporation 3-19 DAQCard-1200 User Manual...

  • Page 43: Mode 1 Output Timing

    ACK* = 1 to INTR = 1 — All timing values are in nanoseconds. Figure 3-10. Mode 1 Timing Specifications for Output Transfers Mode 2 Bidirectional Timing Figure 3-11 shows the timing specifications for bidirectional transfers in mode 2. DAQCard-1200 User Manual 3-20 ni.com...
  • Page 44 ACK* = 0 to output — ACK* = 1 to output float RD* = 1 to IBF = 0 — All timing values are in nanoseconds. Figure 3-11. Mode 2 Timing Specifications for Bidirectional Transfers © National Instruments Corporation 3-21 DAQCard-1200 User Manual...

  • Page 45: Connecting Analog I/O And General-Purpose Timing Signals

    I/O signals. The DAQCard-1200 timing I/O uses two 82C53 counter/timer integrated circuits. One circuit, designated 82C53(A), is used exclusively for DAQ timing, and the other, 82C53(B), is available for general use. You can use pins 38 through 40 and pin 43 to carry external signals for DAQ timing in place of the dedicated 82C53(A).
  • Page 46 A/D Conversion Starts within 125 ns from this Point Figure 3-13. EXTCONV* Signal Timing The external control signal EXTTRIG can either start a DAQ sequence or terminate an ongoing DAQ sequence depending on the mode—posttrigger or pretrigger. These modes are software-selectable.
  • Page 47 65,535. The number of samples acquired before the trigger is limited only by the size of the memory buffer available for data acquisition. Figure 3-15 shows a pretrigger DAQ timing sequence using EXTTRIG and EXTCONV*. The DAQ operation has been initiated through software.
  • Page 48 Figure 3-16 shows an example of a multiple-channel interval-scanning DAQ operation. The scan interval and the sample interval are being timed externally through OUTB1 and EXTCONV*. Channels 1 and 0 of the input multiplexers are being scanned once during each scan interval.

  • Page 49: Analog Output Timing Connections

    DAC. When the EXTUPDATE* signal goes low, the DAC is subsequently updated. Therefore, you can perform externally timed interrupt-driven waveform generation on the DAQCard-1200. Notice that the EXTUPDATE* signal is level sensitive; that is, if you perform writes to the DAC when EXTUPDATE* is low, the DAC is updated immediately.

  • Page 50: General-Purpose Timing Connections

    EXTUPDATE* signals. • Absolute maximum voltage input rating –0.5 to 5.5 V with respect to DGND Refer to the NI-DAQ manual or to Chapter 4, Theory of Operation, for more information concerning the various modes of data acquisition and analog output.
  • Page 51 For these applications, the CLK and GATE signals at the front I/O connector control the counters. The single exception is counter B0, which has an internal 2 MHz clock. Refer to the DAQCard-1200 Register-Level Programmer Manual for programming information.
  • Page 52 In this case, program the second counter for a one-slot mode. This configuration requires an external inverter to make the output pulse of the second counter active high. © National Instruments Corporation 3-29 DAQCard-1200 User Manual...
  • Page 53 Source DGND I/O Connector DAQCard-1200 Figure 3-19. Frequency Measurement Application Figure 3-20 shows the timing requirements for the GATE and CLK input signals and the timing specifications for the OUT output signals of the 82C53. DAQCard-1200 User Manual 3-30 ni.com...

  • Page 54: Connecting The Power

    Do not directly connect this +5 V power pin to analog or digital ground or to any other voltage source on the DAQCard-1200 or any other device. Doing so can damage the DAQCard-1200 or the PC. NI is not liable for any damage due to incorrect power connections.
  • Page 55 After some time, the thermostat cools down, the switch closes, and the +5 V is available once more. Opening this fuse does not necessarily damage the DAQCard-1200. If you do not receive +5 V, check for any shorts between the +5 V power pin and ground.

  • Page 56: Theory Of Operation

    Digital Ctr/Timer Interface Group A Interrupt Interface 12-Bit 82C53 1 MHz +5 V DC-DC Ctr/Timer Timebase – Converter Group B Time 2 MHz Divider Timebase 20 MHz Oscillator Figure 4-1. DAQCard-1200 Block Diagram © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 57: Pc Card I/O Channel Interface Circuitry

    DAQCard-1200 components. PC Card I/O Channel Interface Circuitry The DAQCard-1200 PC Card I/O channel interface circuitry is shown in Figure 4-2 and consists of an address bus, a data bus, interrupt lines, and several control and support signals.

  • Page 58: Timing

    I/O channel interface timing control circuitry, and interrupt control circuitry. Timing The DAQCard-1200 uses two 82C53 counter/timer integrated circuits for internal data acquisition and DAC timing and for general-purpose I/O timing functions. Figure 4-3 shows a block diagram of both groups of timing circuitry (counter groups A and B).
  • Page 59 Interval Counter OUTB1 OUTB1 GATEB1 EXTCONV* Sample A/D Conversion Logic Counter EXTTRIG CLKA2 GATEA2 CLKA2 +5 V CLKA2 GATEA2 GATEA2 EXTUPDATE* Timing Timing D/A Conversion Logic OUTA2 OUTA2 82C53 Counter/Timer Group A Figure 4-3. Timing Circuitry DAQCard-1200 User Manual ni.com...

  • Page 60: Analog Input

    The second group of counter/timers is called Group B and includes B0, B1, and B2. You can use counters B0 and B1 for internal DAQ and DAC timing, or you can use the external timing signal CLKB1 for AI timing. If you are not using Counters B0 and B1 for internal timing, you can use these counters as general purpose counter/timers.

  • Page 61: Analog Input Circuitry

    ±35 V powered on and ±25 V powered off. The mux counters control the input multiplexers. The DAQCard-1200 can perform either single-channel data acquisition or multiple-channel (scanned) data acquisition. These two modes are software-selectable.
  • Page 62 Gaussian noise to the signal to be converted to the ADC. This addition is useful for applications involving averaging to increase the resolution of the DAQCard-1200 to more than 12 bits, as in calibration. In such applications, which are often lower frequency in nature, noise modulation is decreased and differential linearity is improved by the addition of the dither.

  • Page 63: Data Acquisition Timing

    Theory of Operation Data Acquisition Timing A DAQ operation refers to the process of taking a sequence of A/D conversions when the sample interval, or the time between successive A/D conversions, is carefully timed. A finite DAQ operation acquires a finite number of samples, while a continuous DAQ operation acquires an infinite number of samples.

  • Page 64: Data Acquisition Rates

    Chapter 4 Theory of Operation For an example of a multiple-channel interval DAQ operation, refer to the description of interval scanning signal timing in the Analog Input Timing Connections section of Chapter 3, Connecting the Signals. Data Acquisition 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.

  • Page 65: Analog Output

    5 V reference (provided in the Dual DAC chip) multiplied by the 12-bit digital code loaded into the DAC. The voltage output from the two DACs is available at the DAQCard-1200 I/O connector DAC0OUT and DAC1OUT pins.

  • Page 66: Power-On State

    DAC until the MSB is written. Both of these effects are minimal at high waveform update rates. Note Delayed update mode is selected by NI-DAQ when a timed, or buffered, AO operation is configured. © National Instruments Corporation...

  • Page 67: Digital I/O

    (PPI) containing 24 programmable I/O pins. These pins represent the three 8-bit I/O ports (A, B, and C) of the 82C55A, as well as PA<0..7>, PB<0..7>, and PC<0..7> on the DAQCard-1200 I/O connector. Figure 4-6 shows the DIO circuitry. PA<0..7>...

  • Page 68: Calibration

    Calibration refers to the process of minimizing measurement and output voltage errors by making small circuit adjustments. On the DAQCard-1200, these adjustments take the form of writing values to onboard calibration DACs (CalDACs). Some form of device calibration is required for most applications. If you do not calibrate your device, your signals and measurements could have very large offset, gain, and linearity errors.

  • Page 69: Self-Calibration

    Self-calibrate the device when it is installed in the environment in which it is used. Self-Calibration The DAQCard-1200 can measure and correct for almost all of its calibration-related errors without any external signal connections. NI-DAQ provides a self-calibration function. This self-calibration process, which generally takes less than two minutes, is the preferred method of assuring accuracy in your application.

  • Page 70: Appendix A Specifications

    Specifications This appendix lists the specifications for the DAQCard-1200. These specifications are typical at 25 °C unless otherwise noted. Analog Input Input Characteristics Number of channels ....... 8 single-ended, 8 pseudodifferential, or 4 differential, software-selectable Resolution ..........12 bits, 1 in 4,096 Max single-channel sampling rate ..
  • Page 71 Gain ≠ 1 with gain error adjusted to 0 at gain = 1....±0.8% of reading max Amplifier Characteristics Input impedance Normal powered on ......100 GΩ in parallel with 50 pF Powered off ........4.7 k min Overload ..........4.7 k min DAQCard-1200 User Manual ni.com...
  • Page 72 12 µs typ, 15 µs max 25 µs typ, 30 µs max 60 µs typ, 80 µs max System noise (not including quantization error) Gain Dither Off Dither On 1–50 0.3 LSB 0.5 LSB 0.5 LSB 0.7 LSB © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 73 Gain error (relative to internal reference) After calibration.......±0.02% of reading max Before calibration ......±2% of reading max If you perform simultaneous AI and AO, reliable continuous rates are limited to 0.5 to 1 kS/s and are configuration dependent. DAQCard-1200 User Manual ni.com...
  • Page 74 Offset temperature coefficient ....±50 µV/°C Gain temperature coefficient....±30 ppm/°C Digital I/O Number of channels ....... 24 I/O (three 8-bit ports; uses the 82C55A PPI) Compatibility ......... TTL Power-on state........All ports high-impedance inputs © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 75 Digital logic levels Level Input low voltage –0.3 V 0.8 V Input high voltage 2.2 V 5.3 V Output low voltage = 4 mA) — 0.45 V Output high voltage = –1 mA) 3.7 V — DAQCard-1200 User Manual ni.com...
  • Page 76 50 mA power-down mode, plus any current drawn through the I/O connector +5 line Physical Dimensions..........8.56 by 5.40 cm (3.37 by 2.13 in.) PC Card type .......... Type II I/O connector.......... 50-pin male © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 77 Humidity ..........5% to 90% RH, noncondensing Maximum altitude........2000 meters Pollution degree (indoor use only) ..2 Safety The DAQCard-1200 meets the requirements of the following standards for safety and electrical equipment for measurement, control, and laboratory use: • EN 61010-1:1993/A2:1995, IEC 61010-1:1990/A2:1995 •...
  • Page 78 . This web site lists the DoCs by product family. Select the ni.com/hardref.nsf/ appropriate product family, followed by your product, and a link to the DoC appears in Adobe Acrobat format. Click the Acrobat icon to download or read the DoC. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 79 This appendix contains a summary of the functional differences between the Lab-PC+, the DAQPad-1200, and the DAQCard-1200. The Lab-PC+ is a plug-in DAQ device for PCs. It has jumpers for allocating bus resources such as base address, interrupt, and DMA channels, as well as analog input/output resources such as input/output mode and polarity.
  • Page 80 Appendix B Differences among the Lab-PC+, the DAQPad-1200, and the DAQCard-1200 The following table summarizes the differences among the three products. Functionality Lab-PC+ DAQPad-1200 DAQCard-1200 Bus resource allocation Jumpers Software Software (automatic) Calibration Potentiometers Software Software Uses DMA Cannot use DMA...
  • Page 81 What version of NI-DAQ must I have to program the DAQCard-1200? The DAQCard-1200 is supported by NI-DAQ for Windows versions 6.9.x and earlier. You may also the DAQCard-1200 with NI-DAQ for Mac OS version 6.6.x or version 4.9.4 or earlier.
  • Page 82 Signals, outlines the various methods used to achieve the same ground level while maintaining a high CMRR. I want to use NI-DAQ to program the DAQCard-1200. How can I determine which NI-DAQ functions support the DAQCard? If you are using NI-DAQ 6.7 or later, refer to the NI-DAQ Function Reference Online Help file.
  • Page 83 You can rely on the expertise available through our worldwide network of Alliance Program members. To find out more about our Alliance system integration solutions, visit the System Integration section ni.com © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 84 If you have searched the technical support resources on our Web site and still cannot find the answers you need, contact your local office or NI corporate. Phone numbers for our worldwide offices are listed at the front of this manual. DAQCard-1200 User Manual ni.com...
  • Page 85 Acknowledge Input—A low signal on this handshaking line indicates that the data written from the specified port has been accepted; primarily a response from the external device that it has received data © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 86 –5 V to +5 V) one binary digit, either 0 or 1 buffer temporary storage for acquired or generated data (software) byte eight related bits Celsius CalDAC calibration DAC card enable signal clock input signal CMOS complementary metallic oxide semiconductor DAQCard-1200 User Manual ni.com...
  • Page 87 DMA is the fastest method of transferring data to/from computer memory. differential nonlinearity—a measure in least significant bit of the worst-case deviation of code widths from their ideal value of 1 LSB © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 88 FIFO first-in first-out memory buffer—the first data stored is the first data sent to the acceptor. FIFOs are often used on DAQ devices to temporarily store incoming or outgoing data until that data can be retrieved or output. For example, an analog input FIFO stores the results of A/D conversions until the data can be retrieved into system memory, a process that requires the servicing of interrupts and often the programming of the DMA controller.
  • Page 89 INTR Interrupt Request—a signal that becomes high when the 82C55A requests service during a data transfer Industry Standard Architecture the prefix denoting 1,024, or 2 © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 90 (signal) National Instruments NI-DAQ National Instruments driver software for DAQ hardware NRSE nonreferenced single-ended mode—all measurements are made with respect to a common (NRSE) measurement system reference, but the voltage at this reference can vary with respect to the measurement system ground Output Buffer Full—a low singal on this handshaking line indicates that...
  • Page 91 Signal Conditioning eXtensions for Instrumentation—the National Instruments product line for conditioning low-level signals within an external chassis near sensors so only high-level signals are sent to DAQ devices in the noisy PC environment Strobe Input—A low signal on this handshaking ine loads data iont the input latch ©...
  • Page 92 Write—the write signal generated from the parallel port interface circuitry DAQCard-1200 User Manual ni.com...
  • Page 93 3-7 continuous data acquisition, 4-8 floating signal sources, 3-8 data acquisition operation, 4-8 grounded signal sources, 3-10 interval data acquisition, 4-8 single-ended connections, 3-11 when to use, 3-8 © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 94 Counter 0 on 82C53(A) counter/timer, 3-22 transfer characteristics, A-4 Counter 1 on 82C53(A) counter/timer, 3-22 voltage output, A-5 counter/timers theory of operation, 4-10 configuration, 2-6 theory of operation, 4-3 customer education, E-1 bus interface specifications, A-7 technical support, E-1 DAQCard-1200 User Manual ni.com...
  • Page 95 3-23 3-26, 3-27 sample counter, 3-22 pins, 3-22 sample-interval counter, 3-22 power connections, 3-31 waveform generation timing DAQ timing connections. See data acquisition sequence, 3-27 timing connections DATA signal (table), 3-18 DAQCard-1200 Developer Zone, E-1 block diagram, 4-1 DGND signal (table), 3-3, 3-4 configuration.
  • Page 96 3-29 (caution), 3-1 frequently asked questions, E-1 pin assignments (figure), 3-2 IBF signal (table), 3-18 input configurations differential connection GATB0 signal (table), 3-3 considerations, 3-7 GATB1 signal (table), 3-4 GATB2 signal (table), 3-4 DAQCard-1200 User Manual ni.com...
  • Page 97 DAQCard-1200, 2-1 instrumentation amplifier, 3-5 OBF* signal (table), 3-18 interval scanning data acquisition online technical support, E-1 multiple-channel interval scanning operation of DAQCard-1200. See theory of (figure), 3-25 operation INTR signal (table), 3-18 optional equipment, 1-4 OUT signals general-purpose timing signal...
  • Page 98 3-11 requirements for getting started, 1-2 types of signal sources, 3-6 RSE input analog output signal connections, 3-14 configuration, 2-5 DAQ and general-purpose timing signal definition (table), 2-4 connections recommended input configurations data acquisition timing (table), 3-7...
  • Page 99 4-10 configuration), 3-12 DAC timing, 4-11 when to use, 3-11 power-on state, 4-11 software programming choices block diagram of DAQCard-1200, 4-1 National Instruments ADE software, 1-4 digital I/O, 4-12 NI-DAQ driver software, 1-2 functional overview, 4-1 specifications PC card I/O channel interface...
  • Page 100 Index unpacking the DAQCard-1200, 1-5 Web support from National Instruments, E-1 worldwide technical support, E-2 WRT* signal (table), 3-18 voltage output specifications, A-5 DAQCard-1200 User Manual ni.com...

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