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National Instruments DAQCard-1200 User Manual
Summary of DAQCard-1200
Page 1
Daq daqcard ™ -1200 user manual multifunction i/o card for the pcmcia bus daqcard-1200 user manual october 1999 edition part number 320936b-01.
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Worldwide technical support and product information www.Natinst.Com national instruments corporate headquarters 11500 north mopac expressway austin, texas 78759-3504 usa tel: 512 794 0100 worldwide offices australia 03 9879 5166, austria 0662 45 79 90 0, belgium 02 757 00 20, brazil 011 284 5011, ca...
Page 3: Important Information
Important information warranty the daq-card-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 defe...
Page 4: Contents
© national instruments corporation v daqcard-1200 user manual contents about this manual organization of this manual .........................................................................................Ix conventions used in this manual...............................................................
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Contents daqcard-1200 user manual vi © national instruments corporation types of signal sources ................................................................... 3-6 floating signal sources...................................................... 3-6 ground-referenced signal sources ....................
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Contents © national instruments corporation vii daqcard-1200 user manual analog output................................................................................................................4-11 analog output circuitry.............................................................................
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Contents daqcard-1200 user manual viii © national instruments corporation figure 3-1. Daqcard-1200 i/o connector pin assignments................................. 3-2 figure 3-2. Daqcard-1200 instrumentation amplifier.......................................... 3-5 figure 3-3. Differential input connec...
Page 8: About This Manual
© national instruments corporation ix daqcard-1200 user manual about this manual this manual describes the mechanical and electrical aspects of the daqcard-1200 and contains information concerning its installation and operation. The daqcard-1200 is a compact, low-cost, low-power analog input, analog...
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About this manual daqcard-1200 user manual x © national instruments corporation • the glossary contains an alphabetical list and description of terms used in this manual, including abbreviations, acronyms, metric prefixes, mnemonics, and symbols. • the index contains an alphabetical list of key term...
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About this manual © national instruments corporation xi daqcard-1200 user manual national instruments documentation the daqcard-1200 user manual is one piece of the documentation set for your data acquisition system. You could have any of several types of manuals, depending on the hardware and softw...
Page 11: Related Documentation
About this manual daqcard-1200 user manual xii © national instruments corporation related documentation the following documents contain information that you may find helpful as you read this manual: • your ni-daq or labview software manuals for pc compatibles • your computer operating manual, which ...
Page 12: Introduction
© national instruments corporation 1-1 daqcard-1200 user manual 1 introduction this chapter describes the daqcard-1200; lists what you need to get started, the optional software, and optional equipment; and explains how to unpack the daqcard-1200. About the daqcard-1200 thank you for your purchase o...
Page 13: What You Need to Get Started
Chapter 1 introduction daqcard-1200 user manual 1-2 © national instruments corporation 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, a national instruments complete daq driver that handles eve...
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Chapter 1 introduction © national instruments corporation 1-3 daqcard-1200 user manual labview and labwindows/cvi application software labview and labwindows/cvi are innovative program development software packages for data acquisition and control applications. Labview uses graphical programming, wh...
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Chapter 1 introduction daqcard-1200 user manual 1-4 © national instruments corporation figure 1-1. The relationship between the programming environment, ni-daq, and your hardware register-level programming the final option for programming any national instruments daq hardware is to write register-le...
Page 16: Optional Equipment
Chapter 1 introduction © national instruments corporation 1-5 daqcard-1200 user manual optional equipment you can use the following national instruments products with your daqcard-1200: • bnc-2081 • cb-50 or cb-50lp i/o connector block with a 0.5 or 1.0 m cable • er-8, er-16 electromechanical relays...
Page 17: Installation
© national instruments corporation 2-1 daqcard-1200 user manual 2 installation and configuration this chapter describes how to install and software configure the daqcard-1200. Installation there are two basic steps to installing the daqcard-1200. 1. You must have card & socket services 2.0 (or a lat...
Page 18: Configuration
Chapter 2 installation and configuration daqcard-1200 user manual 2-2 © national instruments corporation figure 2-1 shows an example of a typical configuration. Figure 2-1. A typical configuration for the daqcard-1200 configuration the daqcard-1200 is completely software configurable; refer to your ...
Page 19
Chapter 2 installation and configuration © national instruments corporation 2-3 daqcard-1200 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 ...
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Chapter 2 installation and configuration daqcard-1200 user manual 2-4 © national instruments corporation analog input mode the daqcard-1200 has three different input modes—referenced single-ended (rse), non-referenced single-ended (nrse), and differential (diff). Single-ended configuration provides ...
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Chapter 2 installation and configuration © national instruments corporation 2-5 daqcard-1200 user manual nrse input (eight channels) nrse input means that all signals are referenced to the same common mode voltage, which is allowed to float with respect to the analog ground of the daqcard-1200. This...
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Chapter 2 installation and configuration daqcard-1200 user manual 2-6 © national instruments corporation analog output polarity the daqcard-1200 has two channels of analog output voltage at the front panel i/o connector. You can configure each analog output channel for either unipolar or bipolar out...
Page 23: Signal Connections
© national instruments corporation 3-1 daqcard-1200 user manual 3 signal connections this chapter describes the signals on the daqcard-1200 i/o connector. I/o connector figure 3-1 shows the pin assignments for the daqcard-1200 i/o connector. This connector is attached to the ribbon cable that extend...
Page 24
Chapter 3 signal connections daqcard-1200 user manual 3-2 © national instruments corporation figure 3-1. Daqcard-1200 i/o connector pin assignments +5 v gatb2 clkb1 outb1 outb0 extupdate* pc7 pc5 pc3 pc1 pb7 pb5 pb3 pb1 pa7 pa5 pa3 pa1 dgnd agnd aisense/aignd ach6 ach4 ach2 ach0 dgnd outb2 gatb1 ext...
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Chapter 3 signal connections © national instruments corporation 3-3 daqcard-1200 user manual signal connection descriptions the following table describes the connector pins on the daqcard-1200 front i/o connector by pin number and gives the signal name and the significance of each signal connector p...
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Chapter 3 signal connections daqcard-1200 user manual 3-4 © national instruments corporation the connector pins are grouped into analog input signal pins, analog output signal pins, digital i/o signal pins, timing i/o signal pins, and power connections. Signal connection guidelines for each of these...
Page 27
Chapter 3 signal connections © national instruments corporation 3-5 daqcard-1200 user manual 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 configurations, you can ...
Page 28
Chapter 3 signal connections daqcard-1200 user manual 3-6 © national instruments corporation the instrumentation amplifier applies gain, common-mode voltage rejection, and high-input impedance to the analog input signals connected to the daqcard-1200. Signals are routed to the positive and negative ...
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Chapter 3 signal connections © national instruments corporation 3-7 daqcard-1200 user manual the difference in ground potential between two instruments connected to the same building power system is typically between 1 mv and 100 mv but can be much higher if power distribution circuits are not prope...
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Chapter 3 signal connections daqcard-1200 user manual 3-8 © national instruments corporation when you configure the daqcard-1200 for diff input, each signal uses two of the multiplexer inputs—one for the signal and one for its reference signal. Therefore, only four analog input channels are availabl...
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Chapter 3 signal connections © national instruments corporation 3-9 daqcard-1200 user manual figure 3-3. Differential input connections for grounded signal sources with this type of connection, the instrumentation amplifier rejects both the common-mode noise in the signal and the ground-potential di...
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Chapter 3 signal connections daqcard-1200 user manual 3-10 © national instruments corporation figure 3-4. Differential input connections for floating sources the 100 k Ω resistors shown in figure 3-4 create a return path to ground for the bias currents of the instrumentation amplifier. If there is n...
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Chapter 3 signal connections © national instruments corporation 3-11 daqcard-1200 user manual single-ended connection considerations single-ended connections are those in which all daqcard-1200 analog input signals are referenced to one common ground. The input signals are tied to the positive input...
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Chapter 3 signal connections daqcard-1200 user manual 3-12 © national instruments corporation figure 3-5. Single-ended input connections for floating signal sources single-ended connections for grounded signal sources (nrse configuration) if you measure a grounded signal source with a single-ended c...
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Chapter 3 signal connections © national instruments corporation 3-13 daqcard-1200 user manual figure 3-6. Single-ended input connections for grounded signal sources common-mode signal rejection considerations figures 3-3 and 3-6 show connections for signal sources that are already referenced to some...
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Chapter 3 signal connections daqcard-1200 user manual 3-14 © national instruments corporation 2 v in unipolar mode. V in+ should remain within a range of –6 to +11 v in either mode. Analog output signal connections pins 10 through 12 of the front connector are the analog output signals dac0out, agnd...
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Chapter 3 signal connections © national instruments corporation 3-15 daqcard-1200 user manual digital i/o signal connections caution the daqcard-1200 dio lines are not pulled up or pulled down. If you are using these lines as digital outputs, add 10 k Ω Ω Ω Ω resistors to +5 v or dgnd (depending on ...
Page 38
Chapter 3 signal connections daqcard-1200 user manual 3-16 © national instruments corporation figure 3-8 illustrates signal connections for three typical digital i/o applications. Figure 3-8. Digital i/o connections in figure 3-8, port a is configured for digital output, and ports b and c are config...
Page 39
Chapter 3 signal connections © national instruments corporation 3-17 daqcard-1200 user manual port c pin connections the signals assigned to port c depend on how the 82c55a is configured. In mode 0 or no handshaking configuration, port c is configured as two 4-bit i/o ports. In modes 1 and 2, or han...
Page 40
Chapter 3 signal connections daqcard-1200 user manual 3-18 © national instruments corporation 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 ti...
Page 41
Chapter 3 signal connections © national instruments corporation 3-19 daqcard-1200 user manual mode 1 input timing figure 3-9 shows the timing specifications for an input transfer in mode 1. Figure 3-9. Mode 1 timing specifications for input transfers name description minimum maximum t1 stb* pulse wi...
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Chapter 3 signal connections daqcard-1200 user manual 3-20 © national instruments corporation mode 1 output timing figure 3-10 shows the timing specifications for an output transfer in mode 1. Figure 3-10. Mode 1 timing specifications for output transfers mode 2 bidirectional timing figure 3-11 show...
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Chapter 3 signal connections © national instruments corporation 3-21 daqcard-1200 user manual figure 3-11. Mode 2 timing specifications for bidirectional transfers name description minimum maximum t1 wrt* = 1 to obf* = 0 — 150 t2 data before stb* = 1 20 — t3 stb* pulse width 100 — t4 stb* = 0 to ibf...
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Chapter 3 signal connections daqcard-1200 user manual 3-22 © national instruments corporation daq and general-purpose timing signal connections 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 circui...
Page 45
Chapter 3 signal connections © national instruments corporation 3-23 daqcard-1200 user manual in the posttrigger mode, exttrig serves as an external trigger that initiates a data acquisition sequence. When you use counter a0 to time sample intervals, a rising edge on exttrig starts counter a0 and th...
Page 46
Chapter 3 signal connections daqcard-1200 user manual 3-24 © national instruments corporation figure 3-14 shows a pretrigger data acquisition timing sequence using exttrig and extconv*. The data acquisition operation has been initiated through software. Notice that the sample counter has been progra...
Page 47
Chapter 3 signal connections © national instruments corporation 3-25 daqcard-1200 user manual figure 3-15. Interval-scanning signal timing 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 in...
Page 48
Chapter 3 signal connections daqcard-1200 user manual 3-26 © national instruments corporation this case is triggered by a low level on the extupdate* line. The counter-interrupt signal interrupts the pc. This interrupt is generated on the rising edge of extupdate*. The dacwrt signal writes a new val...
Page 49
Chapter 3 signal connections © national instruments corporation 3-27 daqcard-1200 user manual 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 fron...
Page 50
Chapter 3 signal connections daqcard-1200 user manual 3-28 © national instruments corporation pulsewidth measurement is performed by level gating. The pulse you want to measure is applied to the counter gate input. The counter is loaded with the known count and is programmed to count down while the ...
Page 51
Chapter 3 signal connections © national instruments corporation 3-29 daqcard-1200 user manual figure 3-18. Frequency measurement application +5 v i/o connector clk gate out dgnd daqcard-1200 counter 10 k Ω 13 signal source gate source.
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Chapter 3 signal connections daqcard-1200 user manual 3-30 © national instruments corporation figure 3-19 shows the timing requirements for the gate and clk input signals and the timing specifications for the out output signals of the 82c53. Figure 3-19. General-purpose timing signals the gate and o...
Page 53
Chapter 3 signal connections © national instruments corporation 3-31 daqcard-1200 user manual power connections pin 49 of the i/o connector supplies +5 v from the daqcard-1200 power supply. This pin is referenced to dgnd. You can use the +5 v to power external digital circuitry. • power rating 250 m...
Page 54: Theory of Operation
© national instruments corporation 4-1 daqcard-1200 user manual 4 theory of operation this chapter explains the operation of each functional unit of the daqcard-1200. Functional overview the block diagram in figure 4-1 shows a functional overview of the daqcard-1200. Figure 4-1. Daqcard-1200 block d...
Page 55
Chapter 4 theory of operation daqcard-1200 user manual 4-2 © national instruments corporation the major components of the daqcard-1200 are as follows: • pc card i/o channel interface circuitry • analog input circuitry • analog output circuitry • digital i/o circuitry • timing circuitry • calibration...
Page 56: Timing
Chapter 4 theory of operation © national instruments corporation 4-3 daqcard-1200 user manual when you first insert the card into your computer, the system examines information stored in the daqcard-1200 card information structure (cis). This data is used to configure the card appropriately for the ...
Page 57
Chapter 4 theory of operation daqcard-1200 user manual 4-4 © national instruments corporation figure 4-3. Timing circuitry 2 mhz source a/d conversion logic 1 mhz source outb0 clka0 gateb0 outb0 clkb1 gateb1 outb2 gateb2 clkb2 d/a conversion logic 82c53 counter/timer group a ctr rd ctr wrt data 8 de...
Page 58: Analog Input
Chapter 4 theory of operation © national instruments corporation 4-5 daqcard-1200 user manual each 82c53 contains three independent 16-bit counter/timers and one 8-bit mode register. Each counter has a clk input pin, a gate input pin, and an out output pin. You can program all three counter/timers t...
Page 59
Chapter 4 theory of operation daqcard-1200 user manual 4-6 © national instruments corporation figure 4-4. Analog input circuitry analog input circuitry the analog input circuitry consists of two analog input multiplexers, mux counter/gain select circuitry, a software-programmable gain amplifier, a 1...
Page 60
Chapter 4 theory of operation © national instruments corporation 4-7 daqcard-1200 user manual can scan any number of channels from eight to two. Notice that the same gain setting is used for all channels in the scan sequence. The programmable gain amplifier applies gain to the input signal, allowing...
Page 61
Chapter 4 theory of operation daqcard-1200 user manual 4-8 © national instruments corporation with a range of –2,048 to +2,047. In this mode, the msb of the adc result is modified to make it two’s complement. The output from the adc is then sign extended to 16 bits, causing either a leading 0 or a l...
Page 62
Chapter 4 theory of operation © national instruments corporation 4-9 daqcard-1200 user manual interval data acquisition in an interval data acquisition operation, a new period called the interval cycle is defined. Within each interval cycle, a predefined number of samples is taken at regular sample ...
Page 63
Chapter 4 theory of operation daqcard-1200 user manual 4-10 © national instruments corporation for multiple-channel data acquisition, observing the data acquisition rates in table 4-2 ensures 12-bit accuracy. The recommended data acquisition rates in table 4-2 assume that voltage levels on all the c...
Page 64: Analog Output
Chapter 4 theory of operation © national instruments corporation 4-11 daqcard-1200 user manual analog output the daqcard-1200 has two channels of 12-bit d/a output. Each analog output channel can provide unipolar or bipolar output. The daqcard-1200 also contains timing circuitry for waveform generat...
Page 65
Chapter 4 theory of operation daqcard-1200 user manual 4-12 © national instruments corporation power-on state both analog outputs reach 0 v approximately 110 ms after card insertion. During this 110 ms period, the output voltage can swing from +2 to –5 v. Warning disconnect the analog outputs from t...
Page 66: Digital I/o
Chapter 4 theory of operation © national instruments corporation 4-13 daqcard-1200 user manual digital i/o the digital i/o 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...
Page 67: Calibration
© national instruments corporation 5-1 daqcard-1200 user manual 5 calibration this chapter discusses the calibration procedures for the daqcard-1200 analog i/o circuitry. However, the daqcard-1200 is factory calibrated, and national instruments can recalibrate your card if necessary. To maintain the...
Page 68: Calibration At Higher Gains
Chapter 5 calibration daqcard-1200 user manual 5-2 © national instruments corporation calibration at higher gains the daqcard-1200 has a maximum gain error of 0.8%. This means that if the card is calibrated at a gain of 1, and if the gain is switched to 100, a maximum of 32 lsb error may result in t...
Page 69
Chapter 5 calibration © national instruments corporation 5-3 daqcard-1200 user manual when you perform analog input calibration, you must first configure the adc for referenced single-ended (rse) mode and for the correct polarity at which you want to perform data acquisition. When you perform analog...
Page 70: Specifications
© national instruments corporation a-1 daqcard-1200 user manual a 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 sing...
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Appendix a specifications daqcard-1200 user manual a-2 © national instruments corporation 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 ............................
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Appendix a specifications © national instruments corporation a-3 daqcard-1200 user manual input bias current ................................... ±100 pa input offset current................................. ±100 pa cmrr .................................................... 70 db, dc to 60 hz dynamic ...
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Appendix a specifications daqcard-1200 user manual a-4 © national instruments corporation stability recommended warm up time .................15 minutes offset temperature coefficient pre-gain............................................±15 µ v/°c post-gain ..........................................±...
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Appendix a specifications © national instruments corporation a-5 daqcard-1200 user manual voltage output ranges .................................................... 0–10 v, ±5 v software selectable output coupling...................................... Dc output impedance ...............................
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Appendix a specifications daqcard-1200 user manual a-6 © national instruments corporation digital logic levels protection................................................–0.5 to 5.5 v powered on, ±0.5 v powered off handshaking ...........................................3 wire, 2 port data transfers ....
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Appendix a specifications © national instruments corporation a-7 daqcard-1200 user manual protection ............................................... –0.5 to 5.5 v powered on, ±0.5 v powered off resolution counters/timers ............................... 16 bits compatibility ............................
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Appendix a specifications daqcard-1200 user manual a-8 © national instruments corporation environment operating temperature ............................0 to 50 °c storage temperature ................................–55 to 150 °c relative humidity ...................................5% to 90% nonconde...
Page 78: Differences Among The
© national instruments corporation b-1 daqcard-1200 user manual b differences among the lab-pc+, the daqpad-1200, and the daqcard-1200 this appendix contains a summary of the functional differences among the lab-pc+, the daqpad-1200, and the daqcard-1200. The lab-pc+ is a plug-in daq board for pcs. ...
Page 79
Appendix b differences among the lab-pc+, the daqpad-1200, and the daqcard-1200 daqcard-1200 user manual b-2 © national instruments corporation the following table summarizes the differences among the three products. Functionality lab-pc+ daqpad-1200 daqcard-1200 bus resource allocation jumpers soft...
Page 80: Power-Management Modes
© national instruments corporation c-1 daqcard-1200 user manual c power-management modes this appendix describes the power-management modes of the daqcard-1200. • normal mode—this is the normal operating mode of the daqcard-1200 in which all the circuits are fully functional. This mode draws about 1...
Page 81
Appendix c power-management modes daqcard-1200 user manual c-2 © national instruments corporation calibration circuitry functional. Both analog input and analog output can be fully calibrated. The caldacs default to 0 v. Nonfunctional. Draws negligible power. 5 v supply is ideally zero, but gets neg...
Page 82: Configuration
© national instruments corporation d-1 daqcard-1200 user manual d pc card questions and answers this appendix contains a list of common questions and answers relating to pc card operation. The questions are grouped according to the type of information requested. You may find this information useful ...
Page 83: Resources
Appendix d pc card questions and answers daqcard-1200 user manual d-2 © national instruments corporation 2. My computer locks up when i use a pc card. What should i do? This usually happens because card services allocated an unusable interrupt level to the pc card. For example, on some computers, in...
Page 84
Appendix d pc card questions and answers © national instruments corporation d-3 daqcard-1200 user manual are being used for rom access, then you know that c8000–d3fff is an invalid range for card services and should be changed to ca000–d3fff. 3. How can i find usable i/o addresses? Finding usable i/...
Page 85: Resource Conflicts
Appendix d pc card questions and answers daqcard-1200 user manual d-4 © national instruments corporation resource conflicts 1. How do i resolve conflicts between my memory manager and card services? Card services can usually use memory space that is not being used for real ram on the system. Even wh...
Page 86: Technical Support Resources
© national instruments corporation e-1 daqcard-1200 user manual e technical support resources this appendix describes the comprehensive resources available to you in the technical support section of the national instruments web site and provides technical support telephone numbers for you to use if ...
Page 87: Worldwide Support
Daqcard-1200 user manual e-2 © national instruments corporation software-related resources • instrument driver network—a library with hundreds of instrument drivers for control of standalone instruments via gpib, vxi, or serial interfaces. You also can submit a request for a particular instrument dr...
Page 88: Glossary
© national instruments corporation g-1 daqcard-1200 user manual glossary prefix meanings 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 9 t- tera- 10 12 numbers/symbols ° degrees Ω ohms % percent a a amperes ac alternating current ach an...
Page 89
Glossary daqcard-1200 user manual g-2 © national instruments corporation aignd analog input ground signal awg american wire gauge b bcd binary-coded decimal c c celsius ce card enable signal clk clock input signal cmos complementary metallic oxide semiconductor cmrr common-mode rejection ratio—a mea...
Page 90
Glossary © national instruments corporation g-3 daqcard-1200 user manual dma direct memory access—a method by which data can be transferred to/from computer memory from/to a device or memory on the bus while the processor does something else. Dma is the fastest method of transferring data to/from co...
Page 91
Glossary daqcard-1200 user manual g-4 © national instruments corporation h hex hexadecimal hz hertz—the number of scans read or updates written per second i in. Inches i/o input/output—the transfer of data to/from a computer system involving communications channels, operator interface devices, and/o...
Page 92
Glossary © national instruments corporation g-5 daqcard-1200 user manual o out output signal p pcmcia an expansion bus architecture that has found widespread acceptance as a de facto standard in notebook-size computers. It originated as a specification for add-on memory cards written by the personal...
Page 93
Glossary daqcard-1200 user manual g-6 © national instruments corporation v v volts vcc positive supply voltage from the pcmcia bus (usually +5v) v dc volts, direct current vi virtual instrument—(1) a combination of hardware and/or software elements, typically used with a pc, that has the functionali...
Page 94: Index
© national instruments corporation i-1 daqcard-1200 user manual index numbers +5 v signal (table), 3-4 1200_calibrate function, 5-2 to 5-3 a ach signal description (table), 3-3 signal ranges, 3-4 bipolar and unipolar analog input (table), 3-5 ack* signal (table), 3-18 agnd signal analog input signal...
Page 95
Index daqcard-1200 user manual i-2 © national instruments corporation grounded signal sources, 3-8 to 3-9 single-ended connections, 3-11 to 3-13 when to use, 3-8 exceeding maximum input voltage ratings (warning), 3-4 floating signal sources, 3-6 ground-referenced signal sources, 3-6 to 3-7 input con...
Page 96
Index © national instruments corporation i-3 daqcard-1200 user manual d dac output update signal, 3-25 to 3-26 dac0out signal (table), 3-3 dac1out signal (table), 3-3 dacwrt signal, 3-26 daq and general-purpose timing signal connections daq timing connections, 3-22 to 3-26 general-purpose timing con...
Page 97
Index daqcard-1200 user manual i-4 © national instruments corporation digital i/o signal connections illustration, 3-16 pins, 3-15 port c pin connections, 3-17 timing specifications, 3-18 to 3-21 mode 1 input timing, 3-19 mode 1 output timing, 3-20 mode 2 bidirectional timing, 3-20 to 3-21 documenta...
Page 98
Index © national instruments corporation i-5 daqcard-1200 user manual i ibf signal (table), 3-18 input configurations differential connection considerations, 3-7 to 3-8 floating signal sources differential connections, 3-9 to 3-10 recommended input configurations (table), 3-7 ground-referenced signa...
Page 99
Index daqcard-1200 user manual i-6 © national instruments corporation pc card configuration, d-1 i/o channel interface circuitry block diagram, 4-2 theory of operation, 4-2 to 4-3 operation, d-1 to d-2 resource conflicts, d-4 resources, d-2 to d-3 pc signals description (table), 3-3 digital i/o sign...
Page 100
Index © national instruments corporation i-7 daqcard-1200 user manual pins, 3-4 recommended input configurations (table), 3-7 single-ended connections floating signal sources (rse configuration), 3-11 to 3-12 grounded signal sources (nrse configuration), 3-12 to 3-13 when to use, 3-11 types of signa...
Page 101
Index daqcard-1200 user manual i-8 © national instruments corporation analog output, 4-11 to 4-12 circuitry, 4-11 dac timing, 4-12 power-on state, 4-12 block diagram of daqcard-1200, 4-1 digital i/o, 4-13 functional overview, 4-1 to 4-2 pc card i/o channel interface circuitry, 4-2 to 4-3 timing, 4-3...