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National Instruments DAQPad-1200 User Manual

Multifunction i/o card for the pcmcia bus
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  • Page 1 DAQPad-1200...
  • Page 2 ™ DAQCard -1200 User Manual Multifunction I/O Card for the PCMCIA Bus DAQCard-1200 User Manual December 2001 Edition Part Number 320936C-01...
  • Page 3 Sweden 08 587 895 00, Switzerland 056 200 51 51, Taiwan 02 2528 7227, United Kingdom 01635 523545 For further support information, see the Technical Support Resources appendix. To comment on the documentation, send e-mail to techpubs@ni.com. © 1995, 2001 National Instruments Corporation. All rights reserved.
  • Page 4 The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.
  • Page 5 CE Mark Declaration of Conformity**, may cause interference to radio and television reception. Classification requirements are the same for the FCC and the DOC. Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate the equipment under the FCC Rules.
  • Page 6 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 7: Table Of Contents

    Contents About This Manual Conventions ........................xi National Instruments Documentation ................xii Chapter 1 Introduction About the DAQCard-1200.....................1-1 What You Need to Get Started ..................1-2 Software Programming Choices ..................1-2 NI-DAQ......................1-2 National Instruments ADE Software...............1-4 Optional Equipment .......................1-4 Unpacking ........................1-5 Safety Information ......................1-5...
  • Page 8 Contents Chapter 3 Connecting the Signals I/O Connector ........................ 3-1 Signal Connection Descriptions ..................3-3 Connecting Analog Input Signals ..............3-4 Types of Signal Sources ..............3-6 Floating Signal Sources............3-6 Ground-Referenced Signal Sources ........3-6 Input Configurations................. 3-7 Differential Connection Considerations (DIFF Input Mode)............
  • Page 9 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 10: About This Manual

    This font is also used for the proper names of disk drives, paths, directories, programs, subprograms, subroutines, device names, functions, operations, variables, filenames and extensions, and code excerpts. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 11: National Instruments Documentation

    Text in this font denotes a specific platform and indicates that the text following it applies only to that platform. 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 12: Introduction

    You can use the counter/timers to synchronize events, generate pulses, and measure frequency and time. The DAQCard-1200, used in conjunction © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 13: What You Need To Get Started

    Chapter 1 Introduction with the PC, is a versatile, cost-effective and portable platform for laboratory test, measurement, and control. The DAQCard-1200 is shipped with NI-DAQ, the NI driver software that handles every function listed on the data sheet for our hardware. Using NI-DAQ, you can start your application quickly and easily without having to program the card at the register level.
  • Page 14 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 15: National Instruments Ade Software

    LabVIEW features interactive graphics, a state-of-the-art interface, and a powerful graphical programming language. The LabVIEW Data Acquisition VI Library, a series of virtual instruments (VIs) for using LabVIEW with National Instruments DAQ hardware, is included with LabVIEW. Measurement Studio, which includes LabWindows/CVI, tools for Visual...

  • Page 16: Unpacking

    Pollution degree 1 means no pollution or only dry, nonconductive pollution occurs. The pollution has no influence. • Pollution degree 2 means that only nonconductive pollution occurs in most cases. Occasionally, however, a temporary conductivity caused by condensation must be expected. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 17 Chapter 1 Introduction • Pollution degree 3 means that conductive pollution occurs, or dry, nonconductive pollution occurs that becomes conductive due to condensation. Clean the product with a soft nonmetallic brush. Make sure that the product is completely dry and free from contaminants before returning it to service. You must insulate signal connections for the maximum voltage for which the product is rated.
  • Page 18 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 19: Installing And Configuring The Daqcard-1200

    Notice that the card is keyed so that it can be inserted only one way. Note If the computer supports hot-swapping, you may insert or remove the DAQCard-1200 at any time, whether the computer is powered on or off. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 20 Chapter 2 Installing and Configuring the DAQCard-1200 Visually verify the installation by making sure that the DAQCard-1200 is fully inserted into the slot. Attach the I/O cable. You can use either a 50-pin female or a 50-pin male cable to plug into the DAQCard-1200. For more information on these products, refer to the section in Chapter 1, Optional Equipment...

  • Page 21: 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. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 22: Analog Input Polarity

    Chapter 2 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.

  • Page 23: Rse Input Mode (Eight Channels, Default Setting)

    You can set the analog output on the DAQCard-1200 to either bipolar or unipolar configurations. Parameter Configuration Analog Output CH0 Polarity Bipolar—±5 V (default setting) Unipolar—0–10 V Analog Output CH1 Polarity Bipolar—±5 V (default setting) Unipolar—0–10 V © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 24: Analog Output Polarity

    Chapter 2 Installing and Configuring the DAQCard-1200 Analog Output Polarity The DAQCard-1200 has two channels of AO voltage at the front panel I/O connector. You can configure each AO channel for either unipolar or bipolar output. A unipolar configuration has a range of 0 to 10 V at the analog output.

  • Page 25: 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. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 26 Chapter 3 Connecting the Signals ACH0 ACH1 ACH3 ACH2 ACH4 ACH5 ACH7 ACH6 DAC0OUT AISENSE/AIGND 11 12 DAC1OUT AGND 13 14 DGND 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38...

  • Page 27: Signal Connection Descriptions

    Gate B0—External control signal for gating counter B0. OUTB1 DGND Output B1—Voltage output signal of counter B1 when selected as output (DO). This is the external control signal for timing an interval cycle when selected as input (DI). © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 28: Connecting Analog Input Signals

    Chapter 3 Connecting the Signals Table 3-1. Signal Descriptions (Continued) Pins Signal Name Direction Reference Description GATB1 DGND Gate B1—External control signal for gating counter B1. CLKB1 DGND Clock B1—External control clock signal for counter B1. OUTB2 DGND Counter B2—Voltage output signal of counter B2. GATB2 DGND Gate B2—External control signal for gating counter B2.
  • Page 29 With different DAQCard-1200 input modes, you can use the instrumentation amplifier in different ways. Figure 3-2 shows a diagram of the DAQCard-1200 instrumentation amplifier. Instrumentation Amplifier Measured Voltage – – – – – ] GAIN Figure 3-2. DAQCard-1200 Instrumentation Amplifier © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 30: Types Of Signal Sources

    Chapter 3 Connecting the Signals The instrumentation amplifier applies gain, common-mode voltage rejection, and high-input impedance to the AI signals connected to the DAQCard-1200. Signals are routed to the positive and negative inputs of the instrumentation amplifier through input multiplexers on the DAQCard-1200.

  • Page 31: Input Configurations

    DAQCard-1200 in the DIFF input mode. Each input signal is tied to the positive input of the instrumentation amplifier, and its reference signal, or return, is tied to the negative input of the instrumentation amplifier. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 32 Chapter 3 Connecting the Signals 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. •...
  • Page 33 AC-coupled input signal. If the input signal is DC-coupled, you need only the resistor that connects the negative signal input to ground. This connection does not lower the input impedance of the AI channel. © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 34 Chapter 3 Connecting the Signals Differential Connections for Grounded Signal Sources Figure 3-4 shows how to connect a ground-referenced signal source to a DAQCard-1200 configured for DIFF input mode. Refer to the Configuring Analog Input section of Chapter 2, Installing and Configuring DAQCard-1200, for configuration instructions.

  • Page 35: Single-Ended Connection Considerations (Rse And Nrse Input Modes)

    DAQCard-1200 configured for single-ended input. You must configure the DAQCard-1200 analog input circuitry for RSE input mode to make these connections. For configuration instructions, refer to the Configuring Analog Input section of Chapter 2, Installing and Configuring DAQCard-1200. © National Instruments Corporation 3-11 DAQCard-1200 User Manual...
  • Page 36 Chapter 3 Connecting the Signals ACH 0 ACH 1 ACH 2 Floating Signal Source – ACH 7 Measured AISENSE/AIGND – Voltage AGND – Front I/O Connector DAQCard-1200 in RSE Configuration Figure 3-5. Single-Ended Input Connections for Floating Signal Sources Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode) If you measure a grounded signal source with a single-ended configuration, you must configure the DAQCard-1200 in the NRSE input configuration.

  • Page 37: Common-Mode Signal Rejection Considerations

    0 to 10 V. In bipolar mode, the differential input range is from –5 to +5 V. should remain within a range of –6 to +6 V in bipolar mode and in– © National Instruments Corporation 3-13 DAQCard-1200 User Manual...

  • Page 38: Connecting Analog Output Signals

    Chapter 3 Connecting the Signals –6 to +2 V in unipolar mode. V should remain within a range of –6 to +11 V in either mode. Connecting Analog Output Signals Pins 10 through 12 of the front connector are the AO signals DAC0OUT, AGND, and DAC1OUT.

  • Page 39: Connecting Digital I/O Signals

    B. Pins 30 through 37 are connected to the digital lines PC<0..7> for DIO port C. Pin 13, DGND, is the digital ground pin for all three DIO ports. Refer to Appendix A, Specifications, for signal voltage and current specifications. © National Instruments Corporation 3-15 DAQCard-1200 User Manual...
  • Page 40 Chapter 3 Connecting the Signals Figure 3-8 illustrates signal connections for three typical DIO applications. Port C PC<0..7> 22 PB0 Port B TTL Signal PB<0..7> 29 PB7 +5 V +5 V DGND Port A PA<0..7> 30 PA0 I/O Connector DAQCard-1200 Figure 3-8.

  • Page 41: Port C Pin Connections

    Mode 1 Handshaking INTR INTR (Strobed Output) Mode 2 Handshaking INTR (Bidirectional Bus) * Indicates that the signal is active low. Subscripts A and B denote port A or port B handshaking signals. © National Instruments Corporation 3-17 DAQCard-1200 User Manual...

  • Page 42: Timing Specifications

    Chapter 3 Connecting the Signals Timing Specifications Use the handshaking lines STB* and IBF to synchronize input transfers. Use the handshaking lines OBF* and ACK* to synchronize output transfers. The following signals are used in the timing diagrams shown later in this chapter: Name Type...

  • Page 43: 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 44: Mode 1 Output Timing

    Chapter 3 Connecting the Signals Mode 1 Output Timing Figure 3-10 shows the timing specifications for an output transfer in mode 1. WRT* OBF* INTR ACK* DATA Name Description Minimum Maximum WRT* = 0 to INTR = 0 — WRT* = 1 to output —...
  • Page 45 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 46: Connecting Analog I/O And General-Purpose Timing Signals

    Chapter 3 Connecting the Signals Connecting Analog I/O and General-Purpose Timing Signals Pins 38 through 48 of the front connector are connections for timing 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.
  • Page 47 EXTCONV* and EXTTRIG. The rising edge of EXTCONV* that enables external conversions must occur a minimum of 50 ns after the rising edge of EXTTRIG. The first conversion occurs on the next falling edge of EXTCONV*. © National Instruments Corporation 3-23 DAQCard-1200 User Manual...
  • Page 48 Chapter 3 Connecting the Signals 50 ns minimum 50 ns minimum EXTTRIG First posttrigger sample EXTCONV* CONVERT Figure 3-14. Posttrigger DAQ Timing In the pretrigger mode, EXTTRIG serves as a stop-trigger signal. Data is acquired both before and after the stop trigger occurs. A/D conversions are software enabled, which initiates the DAQ operation.
  • Page 49 The first conversion then occurs on the following falling edge of EXTCONV*. Instead of using counter B1, you can externally time the scan interval through OUTB1. If you externally time the sample interval, you should also externally time the scan interval. © National Instruments Corporation 3-25 DAQCard-1200 User Manual...

  • Page 50: Analog Output Timing Connections

    Chapter 3 Connecting the Signals OUTB1 = 50 ns = 50 ns EXTCONV* CONVERT GATE ADC CH Figure 3-16. Interval-Scanning Signal Timing Analog Output Timing Connections Counter A2 is used to internally control updating the output voltage of the 12-bit DACs. In place of counter A2, you can use the final external control signal, EXTUPDATE*, to externally control updating the output voltage of the 12-bit DACs and/or to generate an externally timed interrupt.

  • Page 51: General-Purpose Timing Connections

    General-purpose timing signals include the GATE, CLK, and OUT signals for the three 82C53(B) counters. The 82C53 counter/timers can be used for many general-purpose applications such as pulse and square wave generation; event counting; and pulse-width, time-lapse, and frequency © National Instruments Corporation 3-27 DAQCard-1200 User Manual...
  • Page 52 Chapter 3 Connecting the Signals measurement. 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. The GATE, CLK, and OUT signals for counters B1 and B2 are available at the I/O front connector.
  • Page 53 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 54 Chapter 3 Connecting the Signals +5 V GATE Signal Gate Counter Source 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.

  • Page 55: 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. © National Instruments Corporation 3-31 DAQCard-1200 User Manual...
  • Page 56 Chapter 3 Connecting the Signals Pin 49 is fused for up to 1 A but should be limited to 250 mA. The fuse is a thermally resettable fuse which has an internal thermostat. This thermostat opens when the current exceeds 1 A and the temperature rises. After some time, the thermostat cools down, the switch closes, and the +5 V is available once more.

  • Page 57: Theory Of Operation

    Digital Ctr/Timer Interface Group A Interrupt Interface 12-Bit 82C53 1 MHz DC-DC +5 V 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 58: Pc Card I/O Channel Interface Circuitry

    Chapter 4 Theory of Operation The major components of the DAQCard-1200 are as follows: • PC Card I/O channel interface circuitry • AI circuitry • AO circuitry • DIO circuitry • Timing circuitry • Calibration circuitry The internal data and control buses interconnect the components. The rest of the chapter explains the theory of operation of each of the DAQCard-1200 components.

  • Page 59: 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). © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 60 Chapter 4 Theory of Operation GATEB2 GATEB2 CLKB2 CLKB2 General Purpose Counter OUTB2 OUTB2 OUTB0 GATEB1 GATEB1 1 MHz Source CLKB1 Scan Interval/ General Purpose CLKB1 Counter CLKA0 OUTB1 OUTB1 CTR RD OUTB0 OUTB0 CTR WRT GATEB0 GATEB0 Data Timebase Extension/ General Purpose...

  • Page 61: Analog Input

    12-bit A/D conversion. The DAQCard-1200 also contains DAQ timing circuitry for automatic timing of multiple A/D conversions and includes advanced options such as external triggering, gating, and clocking. Figure 4-4 shows a block diagram of the AI circuitry. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 62: Analog Input Circuitry

    Chapter 4 Theory of Operation Data ACH0 Data Sample- ACH1 12-Bit Sample Programmable and-Hold ACH2 Gain Amp FIFO ACH3 ACH4 Data CONV ACH5 AVAIL Data GAIN0 ACH6 GAIN1 ACH7 WRT/RD GAIN2 AISENSE/ Gain AIGND Select/Mux Counter Dither Dither Circuitry Dither Enable Counter/Timer External Trigger Timing...
  • Page 63 ADC is then sign extended to 16 bits, causing either a leading 0 or a leading F (hex) to be added, depending on the coding and the sign. Thus, data values read from the FIFO are 16 bits wide. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 64: Data Acquisition Timing

    Chapter 4 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 65: Data Acquisition Rates

    Rate Single channel 1, 2, 5, 10, 20, 50, 100 100 kS/s Multiple channel 1, 2, 5, 10 100 kS/s (observe these settings 83.3 kS/s to ensure 12-bit accuracy) 40.0 kS/s 16.6 kS/s © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 66: Analog Output

    Chapter 4 Theory of Operation The recommended acquisition rates in Table 4-2 assume that voltage levels on all the channels included in the scan sequence are within range for the given gain and are driven by low-impedance sources. Note If you use external conversions for single-channel acquisitions, the maximum sampling rate is 90 kS/s.

  • Page 67: 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 4-11 DAQCard-1200 User Manual...

  • Page 68: Digital I/O

    Chapter 4 Theory of Operation Digital I/O The DIO circuitry has an 82C55A integrated circuit. The 82C55A is a general-purpose programmable peripheral interface (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>...

  • Page 69: Calibration

    The EEPROM has a user-modifiable calibration area in addition to the permanent factory calibration area. Hence, you can load the CalDACs with values either from the original factory calibration or from a calibration that you subsequently performed. © National Instruments Corporation DAQCard-1200 User Manual...

  • Page 70: Self-Calibration

    Chapter 5 Calibration This method of calibration is not very accurate because it does not take into account the fact that the device measurement and output voltage errors can vary with time and temperature. Self-calibrate the device when it is installed in the environment in which it is used.

  • Page 71: Appendix A Specifications

    0 to 1 V ±500 mV 0 to 500 mV ±250 mV 0 to 250 mV ±100 mV 0 to 100 mV ±50 mV Input coupling ........DC Type of ADC.......... Successive approximation © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 72 Appendix A Specifications Maximum working voltage (signal + common mode) ......Negative input/AISENSE should remain within ±6 V (bipolar) or –6 to 2 V (unipolar) of AGND Overvoltage protection ......±35 V powered on and ±25 V powered off Inputs protected ........ACH<0..7> FIFO buffer size........1,024 samples Data transfers ..........Interrupts, programmed I/O Dither ............Available...
  • Page 73 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 74 Appendix A Specifications Stability Recommended warm-up time....15 minutes Offset temperature coefficient Pre-gain..........±15 µV/°C Post-gain ..........±100 µV/°C Gain temperature coefficient ....±40 ppm/°C Analog Output Output Characteristics Number of Channels .......2 voltage Resolution ..........12 bits, 1 in 4,096 Max update rate ........20 kS/s Type of DAC ..........Double buffered Data transfers ..........Interrupts, programmed I/O Transfer Characteristics...
  • Page 75 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 76 Appendix A Specifications 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 = 2.5 mA) — 0.4 V Output high voltage = –40 µA) 4.2 V — = –2.5 mA) 3.7 V —...
  • Page 77 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 78 Appendix A Specifications Maximum Working Voltage Maximum working voltage refers to the signal voltage plus the common-mode voltage. Channel-to-earth ........30 VAC or 60 VDC, installation category I Channel-to-channel.........30 VAC or 60 VDC, installation category I Environmental Operating temperature ......0 to 50 °C Storage temperature ........–55 to 150 °C Humidity ..........5% to 90% RH, noncondensing Maximum altitude........2000 meters...
  • Page 79 . 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 80 It also has potentiometers for calibration. The DAQPad-1200 is a DAQ device that plugs into the parallel port of the computer. It is functionally identical to the Lab-PC+. In addition, there are no jumpers for bus resource allocation;...
  • Page 81 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 82 Check the ground-reference connections. The signal may be referenced to a level that is considered floating with reference to the DAQCard ground reference. Even if you are in differential mode, the signal must still be © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 83 Appendix C Common Questions referenced to the same ground level as the DAQCard reference. Chapter 3, Connecting the 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 84 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 85 Appendix D Technical Support Resources Worldwide Support NI has offices located around the world to help address your support needs. You can access our branch office Web sites from the Worldwide Offices section of . Branch office Web sites provide up-to-date contact ni.com information, support phone numbers, e-mail addresses, and current events.
  • Page 86 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 87 Glossary analog-to-digital converter—an electronic device, often an integrated circuit, that converts an analog voltage to a digital number application development environment AGND analog output ground reference signal for analog output voltages analog input AIGND analog input ground signal AISENSE analog input sense signal analog output American Wire Gauge binary-coded decimal...
  • Page 88 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 89 Glossary digital output DOUT digital output signal EEPROM electrically erasable programmable read-only memory—ROM that can be erased with an electrical signal and reprogrammed EISA Extended Industry Standard Architecture Engineering Software Package EXTCONV external control signal to trigger A/D conversions EXTINT external interrupt signal EXTTRIG External Trigger—external control singal to trigger a DAQ operation...
  • Page 90 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 91 (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 92 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 © National Instruments Corporation DAQCard-1200 User Manual...
  • Page 93 Glossary timing input/output transistor-transistor logic two’s complement given a number x expressed in base 2 with n digits to the left of the radix point, the (base 2) number 2n – x unipolar a signal range that is always positive (for example, 0 to +10 V) volts volts, alternating current positive supply voltage from the PCMCIA bus (usually +5V)
  • Page 94 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 95 I/O, 2-6 signal connections, 3-14 PC Card, C-1 specifications typical configuration (figure), 2-2 dynamic characteristics, A-5 contacting National Instruments, E-2 output characteristics, A-4 conventions used in the manual, xi stability, A-5 Counter 0 on 82C53(A) counter/timer, 3-22 transfer characteristics, A-4...
  • Page 96 3-8 theory of operation. See theory of digital I/O operation circuitry, 4-12 unpacking, 1-5 configuration, 2-6 DAQPad-1200, compared with Lab-PC+ and specifications, A-5 DAQCard-1200, B-1 digital I/O signal connections data acquisition rates illustration, 3-16 maximum recommended rates (table), 4-9...
  • Page 97 Index GATE signals dynamic characteristics analog input specifications, A-3 general-purpose timing signal connections, 3-27 analog output specifications, A-5 timing requirements signals (figure), 3-31 general-purpose timing signal connections See also data acquisition timing EEPROM storage of calibration data, 5-1 connections equipment, optional, 1-4 event-counting, 3-28 event-counting application, 3-28 frequency measurement, 3-29...
  • Page 98 INTR signal (table), 3-18 optional equipment, 1-4 OUT signals general-purpose timing signal connections, 3-27 Lab-PC+, compared with DAQPad-1200 and DAQCard-1200, B-1 timing requirements signals (figure), 3-31 OUTB0 signal (table), 3-3 OUTB1 signal DAQ timing connections, 3-25 mode 1 input timing, 3-19...
  • Page 99 Index differential connections physical specifications, A-7 pin assignments for I/O connector (figure), 3-2 floating signal sources, 3-8 polarity grounded signal sources, 3-10 analog input, 2-4 single-ended connections, 3-11 analog output, 2-6 when to use, 3-8 bipolar and unipolar signal range versus exceeding maximum input voltage gain (table), 3-5 ratings (caution), 3-4...
  • Page 100 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 101 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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