DAQCard E Series User Manual Multifunction I/O Cards for PCMCIA June 1996 Edition Part Number 321138A-01 Copyright 1996 National Instruments Corporation. All Rights Reserved. This document was created with FrameMaker 4.0.
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Important Information Warranty The DAQCard E Series cards are warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor.
Table of Contents About This Manual Organization of This Manual ........................................................................................xi Conventions Used in This Manual ................................................................................xii National Instruments Documentation ...........................................................................xiii Related Documentation .................................................................................................
Table of Contents Digital I/O .....................................................................................................................3-12 Timing Signal Routing ..................................................................................................3-13 Programmable Function Inputs .......................................................................3-14 DAQCard Clocks ............................................................................................
Table of Contents GPCTR0_UP_DOWN Signal ..........................................................4-39 GPCTR1_SOURCE Signal ..............................................................4-39 GPCTR1_GATE Signal ...................................................................4-40 GPCTR1_OUT Signal ......................................................................4-41 GPCTR1_UP_DOWN Signal ..........................................................4-42 FREQ_OUT Signal ...................................
Table of Contents Appendix F Customer Communication Glossary Index DAQCard E Series User Manual viii National Instruments Corporation
Table of Contents Figures Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware ................................................................................1-4 Figure 2-1. A Typical Configuration for the DAQCard E Series Card ......................2-2 Figure 3-1. Figure 3-2. Figure 3-3. Figure 3-4. Figure 3-5. Figure 3-6. Figure 3-7. Figure 3-8. Figure 3-9. Figure 3-10. DAQCard-AI-16E-4 Block Diagram .......................................................
Table of Contents Figure 4-26. Figure 4-27. Figure 4-28. Figure 4-29. Figure 4-30. GPCTR0_OUT Signal Timing ................................................................4-39 GPCTR1_SOURCE Signal Timing .........................................................4-40 GPCTR1_GATE Signal Timing in Edge-Detection Mode .....................4-41 GPCTR1_OUT Signal Timing ................................................................4-41 GPCTR Timing Summary .....................................................
About This Manual This manual describes the electrical and mechanical aspects of each card in the DAQCard E Series product line and contains information concerning their operation and programming. Unless otherwise noted, text applies to all cards in the DAQCard E Series.
About This Manual • Appendix B, Optional Cable Connector Descriptions, describes the connectors on the optional cables for the DAQCard E Series cards. • Appendix C, PC Card Questions and Answers, contains a list of common questions and answers relating to PC Card operation. • Appendix D, Common Questions, contains a list of commonly asked questions and their answers relating to usage and special features of your DAQCard E Series card.
About This Manual names, functions, operations, variables, filenames, and extensions, and for statements and comments taken from program code. NI-DAQ NI-DAQ refers to NI-DAQ software unless otherwise noted. PC Card PC Card refers to a PCMCIA card. SCXI SCXI stands for Signal Conditioning eXtensions for Instrumentation and is a National Instruments product line designed to perform front-end signal conditioning for National Instruments plug-in DAQ boards.
About This Manual • Accessory installation guides or manuals—If you are using accessory products, read the terminal block and cable assembly installation guides. They explain how to physically connect the relevant pieces of the system. Consult these guides when you are making your connections. • SCXI chassis manuals—If you are using SCXI, read these manuals for maintenance information on the chassis and installation instructions.
Chapter 1 Introduction This chapter describes the DAQCard E Series cards, lists what you need to get started, describes the optional software and optional equipment, and explains how to unpack your DAQCard E Series card. About the DAQCard E Series Thank you for buying a National Instruments DAQCard E Series card. The DAQCard E Series cards are multifunction analog, digital, and timing I/O cards for computers equipped with Type II PCMCIA slots.
Chapter 1 Introduction What You Need to Get Started To set up and use your DAQCard E Series card, you will need the following: ❏ One of the following cards: DAQCard-AI-16E-4 DAQCard-AI-16XE-50 ❏ DAQCard E Series User Manual ❏ One of the following software packages and documentation NI-DAQ for PC compatibles LabVIEW for PC compatibles LabWindows/CVI ❏ Your computer Software Programming Choices There are several options to choose from when programming your National Instruments DAQ and SCXI hardware.
Chapter 1 Introduction LabWindows/CVI Data Acquisition Library, a series of functions for using LabWindows/CVI with National Instruments DAQ hardware, is included with the NI-DAQ software kit. The LabWindows/CVI Data Acquisition Library is functionally equivalent to the NI-DAQ software. Using LabVIEW or LabWindows/CVI software will greatly reduce the development time for your data acquisition and control application.
Chapter 1 Introduction LabWindows/CVI, your application uses the NI-DAQ driver software, as illustrated in Figure 1-1. Conventional Programming Environment (PC, Macintosh, or Sun SPARCstation) LabVIEW (PC, Macintosh, or Sun SPARCstation) LabWindows/CVI (PC or Sun SPARCstation) NI-DAQ Driver Software DAQ or SCXI Hardware Personal Computer or Workstation Figure 1-1.
Chapter 1 Introduction Optional Equipment National Instruments offers a variety of products to use with your DAQCard E Series card, including cables, connector blocks, and other accessories, as follows: • Cables and cable assemblies, shielded and ribbon • Connector blocks, shielded and unshielded, with 50 and 68-pin screw terminals • SCXI modules and accessories for isolating, amplifying, exciting, and multiplexing signals for relays and analog output.
Chapter 1 Introduction The following list gives recommended National Instruments cable assemblies that mate to your DAQCard I/O connector. ♦ DAQCard-AI-16E-4 PSHR68-68M, a shielded 68-position ribbon cable, with male-tomale connectors. This connects to an SH6868 or SH6850 shielded cable. PR68-68F, an unshielded 68-position ribbon cable ♦ DAQCard-AI-16XE-50 PSHR68-68M, a shielded 68-position ribbon cable, with male-tomale connectors. This connects to an SH6868 or SH6850 shielded cable.
Chapter 2 Installation and Configuration This chapter explains how to install and configure a DAQCard E Series card. Installation Note: You should install your driver software before installing your hardware. Refer to your NI-DAQ release notes for software installation instructions. There are two basic steps to installing a DAQCard E Series card. 1. If you have Windows 3.1, you must have Card & Socket Services 2.0 (or a later version) software installed on your computer.
Chapter 2 Installation and Configuration Figure 2-1 shows an example of a typical configuration. Portable Computer PCMCIA Socket PSHR68-68M I/O Cable D CAR ™ rd Ca Q DA ERT INS -4 6E I-1 -A The nt L TS me tru NA EN Ins IO isM the RU re NATST twa IN Sof ® ™ I/O Signals SH6868 Cable Figure 2-1. A Typical Configuration for the DAQCard E Series Card Configuration Your DAQCard is completely software-configurable. Refer to your software documentation to install and configure your software.
Chapter 2 Installation and Configuration refer to the NI-DAQ release notes and follow the instructions given there for your operating system and LabVIEW. If you are using LabWindows/CVI, refer to your LabWindows/CVI release notes to install your application software. After you have installed LabWindows/CVI, refer to the NI-DAQ release notes and follow the instructions given there for your operating system and LabWindows/CVI.
Chapter 3 Hardware Overview This chapter presents an overview of the hardware functions on your DAQCard E Series card. Figure 3-1 shows the block diagram for the DAQCard-AI-16E-4.
Chapter 3 Hardware Overview Figure 3-2 shows a block diagram for the DAQCard-AI-16XE-50.
Chapter 3 Hardware Overview single-ended channels. Table 3-1 describes the three input configurations. Table 3-1. Available Input Configurations for the DAQCard E Series Description Configuration DIFF A channel configured in DIFF mode uses two analog channel input lines. One line connects to the positive input of the DAQCard programmable gain instrumentation amplifier (PGIA), and the other connects to the negative input of the PGIA.
Chapter 3 Hardware Overview The software-programmable gain on these cards increases their overall flexibility by matching the input signal ranges to those that the ADC can accommodate. The DAQCard-AI-16E-4 has gains of 0.5, 1, 2, 5, 10, 20, 50, and 100 and is suited for a wide variety of signal levels. With the proper gain setting, you can use the ADC’s full resolution to measure the input signal. Table 3-2 shows the overall input range and precision according to the range configuration and gain used.
Chapter 3 Hardware Overview DAQCard-AI-16XE-50 has a unipolar input range of 10 V (0 to 10 V) and a bipolar input range of 20 V (± 10 V). You can program polarity and range settings on a per channel basis so that you can configure each input channel uniquely. Note: You can calibrate your DAQCard-AI-16XE-50 analog input circuitry for either a unipolar or bipolar polarity.
Chapter 3 Hardware Overview Considerations for Selecting Input Ranges Which input polarity and range you select depends on the expected range of the incoming signal. A large input range can accommodate a large signal variation but reduces the voltage resolution. Choosing a smaller input range improves the voltage resolution but may result in the input signal going out of range. For best results, you should match the input range as closely as possible to the expected range of the input signal.
Chapter 3 LSBs 6.0 LSBs 6.0 4.0 4.0 2.0 2.0 0.0 0.0 -2.0 -2.0 -4.0 -4.0 Hardware Overview -6.0 -6.0 0 100 200 300 400 0 500 a. Dither disabled; no averaging 100 200 300 400 500 b. Dither disabled; average of 50 acquisitions LSBs 6.0 LSBs 6.0 4.0 4.0 2.0 2.0 0.0 0.0 -2.0 -2.0 -4.0 -4.0 -6.0 -6.0 0 100 200 300 400 500 0 c. Dither enabled; no averaging 100 200 300 400 500 d. Dither enabled; average of 50 acquisitions Figure 3-3.
Chapter 3 Hardware Overview impedances are low. Refer to Appendix A, Specifications, for a complete listing of settling times for each of the DAQCards. When scanning among channels at various gains, the settling times may increase. When the PGIA switches to a higher gain, the signal on the previous channel may be well outside the new, smaller range.
Chapter 3 Hardware Overview Analog Trigger ♦ DAQCard-AI-16E-4 In addition to supporting internal software triggering and external digital triggering to initiate a data acquisition sequence, the DAQCard-AI-16E-4 also supports analog triggering. You can configure the analog trigger circuitry to accept either a direct analog input from the PFI0/TRIG1 pin on the I/O connector or a postgain signal from the output of the PGIA, as shown in Figure 3-4.
Chapter 3 Hardware Overview In below-low-level analog triggering mode, the trigger is generated when the signal value is less than lowValue. HighValue is unused. lowValue Trigger Figure 3-5. Below-Low-Level Analog Triggering Mode In above-high-level analog triggering mode, the trigger is generated when the signal value is greater than highValue. LowValue is unused. highValue Trigger Figure 3-6.
Chapter 3 Hardware Overview In inside-region analog triggering mode, the trigger is generated when the signal value is between the lowValue and the highValue. highValue lowValue Trigger Figure 3-7. Inside-Region Analog Triggering Mode In high-hysteresis analog triggering mode, the trigger is generated when the signal value is greater than highValue, with the hysteresis specified by lowValue. highValue lowValue Trigger Figure 3-8.
Chapter 3 Hardware Overview In low-hysteresis analog triggering mode, the trigger is generated when the signal value is less than lowValue, with the hysteresis specified by highValue. highValue lowValue Trigger Figure 3-9. Low-Hysteresis Analog Triggering Mode The analog trigger circuit generates an internal digital trigger based on the analog input signal and the user-defined trigger levels.
Chapter 3 Hardware Overview Timing Signal Routing The DAQ-STC provides a very flexible interface for connecting timing signals to other boards or external circuitry. Your DAQCard uses the Programmable Function Input (PFI) pins on the I/O connector to connect to external circuitry. These connections are designed to enable the DAQCard to both control and be controlled by other boards and circuits. The DAQ-STC has a total of 13 internal timing signals that can be controlled by an external source.
Chapter 3 Hardware Overview Programmable Function Inputs The 10 PFIs are connected to the signal routing multiplexer for each timing signal, and software can select one of the PFIs as the external source for a given timing signal. It is important to note that any of the PFIs can be used as an input by any of the timing signals and that multiple timing signals can use the same PFI simultaneously.
Chapter 4 Signal Connections This chapter describes how to make input and output signal connections to your DAQCard E Series card via the DAQCard I/O connector. The I/O connector for the DAQCard E Series cards has 68 pins that you can connect to 68-pin accessories with the PSHR68-68M and SH6868 shielded cables, or the PR68-68F ribbon cable. With the PSHR68-68M and SH6868 shielded cables or the PR68-50F ribbon cable, you can connect your DAQCard to 50-pin signal conditioning modules and terminal blocks.
Chapter 4 Signal Connections ACH8 ACH1 AIGND ACH10 ACH3 AIGND ACH4 AIGND ACH13 ACH6 AIGND ACH15 Reserved Reserved Reserved DIO4 DGND DIO1 DIO6 DGND +5 V DGND DGND PFI0/TRIG1 PFI1/TRIG2 DGND +5 V DGND PFI5/UPDATE* PFI6/WFTRIG DGND PFI9/GPCTR0_GATE GPCTR0_OUT FREQ_OUT 34 33 32 31 30 29 28 27 26 68 67 66 65 64 63 62 61 60 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 ACH0 AIGND ACH9 ACH2 AIGND ACH11 AISENSE AC
Chapter 4 Table 4-1. Signal Name Signal Connections I/O Connector Signal Descriptions Reference Direction Description AIGND — — Analog Input Ground—These pins are the reference point for single-ended measurements and the bias current return point for differential measurements. All three ground references—AIGND, AOGND, and DGND—are connected together on your DAQCard E Series card. ACH<0..15> AIGND Input Analog Input Channels 0 through 15—Each channel pair, ACH (i = 0..
Chapter 4 Signal Connections Table 4-1. Signal Name PFI1/TRIG2 PFI2/CONVERT* PFI3/GPCTR1_SOURCE PFI4/GPCTR1_GATE I/O Connector Signal Descriptions (Continued) Reference Direction Description DGND Input PFI1/Trigger 2—As an input, this is one of the PFIs. Output As an output, this is the TRIG2 signal. In pretrigger applications, a low-to-high transition indicates the initiation of the posttrigger conversions. TRIG2 is not used in posttrigger applications.
Chapter 4 Table 4-1. Signal Name PFI7/STARTSCAN PFI8/GPCTR0_SOURCE PFI9/GPCTR0_GATE Signal Connections I/O Connector Signal Descriptions (Continued) Reference Direction Description DGND Input PFI7/Start of Scan—As an input, this is one of the PFIs. Output As an output, this is the STARTSCAN signal. This pin pulses once at the start of each analog input scan in the interval scan. A low-to-high transition indicates the start of the scan.
Chapter 4 Signal Connections Table 4-2. Signal Name Drive I/O Signal Summary, DAQCard-AI-16E-4 (Continued) Impedance Input/ Output Protection (Volts) On/Off Source (mA at V) Sink (mA at V) Rise Time (ns) Bias DGND DO — — — — — — VCC DO 0.45 Ω Short-circuit to ground 250 at Vcc — — — DIO<0..7> DIO — Vcc +0.5 13 at (Vcc -0.4) 24 at 0.4 1.1 50 kΩ pu1 SCANCLK DO — — 3.5 at (Vcc -0.4) 5 at 0.4 1.5 50 kΩ pu EXTSTROBE* DO — — 3.5 at (Vcc -0.4) 5 at 0.4 1.
Chapter 4 Table 4-2. Signal Name FREQ_OUT Drive DO AI = Analog Input DO = Digital Output I/O Signal Summary, DAQCard-AI-16E-4 (Continued) Impedance Input/ Output — Protection (Volts) On/Off — Source (mA at V) 3.5 at (Vcc-0.4) DIO = Digital Input/Output ADIO = Analog/Digital Input/Output 1DIO <6..7> are also pulled up with a 10 kΩ resistor. 2Also pulled down with a 10 kΩ resistor. Warning: Signal Connections Sink (mA at V) Rise Time (ns) Bias 5 at 0.4 1.
Chapter 4 Signal Connections Table 4-3 shows the I/O signal summary for the DAQCard-AI-16XE-50. Table 4-3. Signal Name I/O Signal Summary, DAQCard-AI-16XE-50 Drive Impedance Input/ Output Sink (mA at V) Rise Time (ns) ACH<0..15> AI 20 GΩ in parallel with 100 pF 25/15 — — — ±10 nA AISENSE AI 20 GΩ in parallel with 100 pF 25/15 — — — ±10 nA AIGND AI — — — — — — DGND DO — — — — — — VCC DO 0.45 Ω Short-circuit to ground 250 at Vcc — — — DIO<0..7> DIO — Vcc +0.
Chapter 4 Table 4-3. Signal Name Drive Signal Connections I/O Signal Summary, DAQCard-AI-16XE-50 (Continued) Impedance Input/ Output Protection (Volts) On/Off Source (mA at V) Sink (mA at V) Rise Time (ns) Bias PFI9/GPCTR0_GATE DIO — Vcc +0.5 3.5 at (Vcc -0.4) 5 at 0.4 1.5 50 kΩ pu GPCTR0_OUT DO — — 3.5 at (Vcc -0.4) 5 at 0.4 1.5 50 kΩ pu FREQ_OUT DO — — 3.5 at (Vcc-0.4) 5 at 0.4 1.
Chapter 4 Signal Connections Analog Input Signal Connections The analog input signals are ACH<0..15>, AISENSE, and AIGND. The ACH<0..15> signals are tied to the 16 analog input channels of your DAQCard. In single-ended mode, signals connected to ACH<0..15> are routed to the positive input of the DAQCard PGIA. In differential mode, signals connected to ACH<0..7> are routed to the positive input of the PGIA, and signals connected to ACH<8..15> are routed to the negative input of the PGIA.
Chapter 4 Signal Connections the PGIA in different ways. Figure 4-2 shows a diagram of your DAQCard PGIA. Instrumentation Amplifier Vin+ + + PGIA Vin- Vm - Measured Voltage Vm = [Vin+ - Vin-]* Gain Figure 4-2. DAQCard E Series PGIA The PGIA applies gain and common-mode voltage rejection and presents high input impedance to the analog input signals connected to your DAQCard. Signals are routed to the positive and negative inputs of the PGIA through input multiplexers on the DAQCard.
Chapter 4 Signal Connections Types of Signal Sources When configuring the input channels and making signal connections, you must first determine whether the signal sources are floating or ground-referenced. The following sections describe these two types of signals. Floating Signal Sources A floating signal source is one that is not connected in any way to the building ground system but, rather, has an isolated ground-reference point.
Chapter 4 Signal Connections Figure 4-3 summarizes the recommended input configuration for both types of signal sources.
Chapter 4 Signal Connections Differential Connection Considerations (DIFF Input Configuration) A differential connection is one in which the DAQCard analog input signal has its own reference signal or signal return path. These connections are available when the selected channel is configured in DIFF input mode. The input signal is tied to the positive input of the PGIA, and its reference signal, or return, is tied to the negative input of the PGIA.
Chapter 4 Signal Connections Differential Connections for Ground-Referenced Signal Sources Figure 4-4 shows how to connect a ground-referenced signal source to a channel on a DAQCard configured in DIFF input mode. ACH<0..7> GroundReferenced Signal Source + Vs + - Instrumentation Amplifier PGIA + ACH<8..15> CommonMode Noise and Ground Potential Measured Voltage Vm - + V cm - Input Multiplexers AISENSE AIGND I/O Connector Selected Channel in DIFF Configuration Figure 4-4.
Chapter 4 Signal Connections Differential Connections for Nonreferenced or Floating Signal Sources Figure 4-5 shows how to connect a floating signal source to a channel on a DAQCard configured in DIFF input mode. ACH<0..7> Floating Signal Source + Bias Resistors (see text) VS + - Instrumentation Amplifier PGIA + ACH<8..15> Measured Voltage Vm - Bias Current Return Paths Input Multiplexers AISENSE AIGND I/O Connector Selected Channel in DIFF Configuration Figure 4-5.
Chapter 4 Signal Connections without any resistors at all. This connection works well for DC-coupled sources with low source impedance (less than 100 Ω). However, for larger source impedances, this connection leaves the differential signal path significantly out of balance. Noise that couples electrostatically onto the positive line does not couple onto the negative line because it is connected to ground.
Chapter 4 Signal Connections Single-Ended Connection Considerations A single-ended connection is one in which the DAQCard E Series card analog input signal is referenced to a ground that can be shared with other input signals. The input signal is tied to the positive input of the PGIA, and the ground is tied to the negative input of the PGIA. When every channel is configured for single-ended input, up to 16 analog input channels are available.
Chapter 4 Signal Connections Single-Ended Connections for Floating Signal Sources (RSE Configuration) Figures 4-6 shows how to connect a floating signal source to a channel on a DAQCard configured for RSE mode. ACH<0..15> Floating Signal Source + + Vs Instrumentation Amplifier PGIA - + Input Multiplexers AISENSE - Measured Voltage Vm - AIGND I/O Connector Selected Channel in RSE Configuration Figure 4-6.
Chapter 4 Signal Connections Figure 4-7 shows how to connect a grounded signal source to a channel on a DAQCard configured for NRSE mode. ACH<0..15> + GroundReferenced Signal Source + Vs Instrumentation Amplifier PGIA - + Input Multiplexers CommonMode Noise and Ground Potential + AISENSE - AIGND Vcm Measured Voltage Vm - Selected Channel in NRSE Configuration I/O Connector Figure 4-7.
Chapter 4 Signal Connections Digital I/O Signal Connections The digital I/O signals are DIO<0..7> and DGND. The DIO<0..7> signals make up the DIO port, and DGND is the ground reference signal for this port. You can program all lines individually to be inputs or outputs. Warning: Exceeding the maximum input voltage ratings, which are listed in Tables 4-2 through 4-3, can damage the DAQCard and the computer. National Instruments is NOT liable for any damages resulting from such signal connections.
Chapter 4 Signal Connections Figure 4-8 shows DIO<0..3> configured for digital input and DIO<4..7> configured for digital output. Digital input applications include receiving TTL signals and sensing external device states such as the state of the switch shown in the figure. Digital output applications include sending TTL signals and driving external devices such as the LED shown in the figure.
Chapter 4 Signal Connections The data acquisition signals are explained in the Data Acquisition Timing Connections section later in this chapter. The general-purpose timing signals are explained in the General-Purpose Timing Signal Connections section later in this chapter. All digital timing connections are referenced to DGND. This reference is demonstrated in Figure 4-9, which shows how to connect an external TRIG1 source and an external CONVERT* source to two of the DAQCard PFI pins.
Chapter 4 Signal Connections Programmable Function Input Connections There are a total of 13 internal timing signals that you can externally control from the PFI pins. The source for each of these signals is software selectable from any of the PFIs when you want external control. This flexible routing scheme reduces the need to change the physical wiring to the DAQCard I/O connector for different applications requiring alternative wiring.
Chapter 4 Signal Connections shows a typical pretriggered data acquisition sequence. The description for each signal shown in these figures is included later in this chapter. TRIG1 STARTSCAN CONVERT* 4 Scan Counter 3 2 1 0 Figure 4-10. Typical Posttriggered Acquisition TRIG1 TRIG2 Don't Care STARTSCAN CONVERT* Scan Counter 3 2 1 0 2 2 2 1 0 Figure 4-11.
Chapter 4 Signal Connections SCANCLK Signal SCANCLK is an output-only signal that generates a pulse with the leading edge occurring approximately 50 to 100 ns after an A/D conversion begins. The polarity of this output is software-selectable but is typically configured so that a low-to-high leading edge can clock external analog input multiplexers indicating when the input signal has been sampled and can be removed. This signal has a 400 to 500 ns pulse width and is software enabled.
Chapter 4 Signal Connections EXTSTROBE* Signal EXTSTROBE* is an output-only signal that generates either a single pulse or a sequence of eight pulses in the hardware-strobe mode. An external device can use this signal to latch signals or to trigger events. In the single-pulse mode, software controls the level of the EXTSTROBE* signal. A 10 and 1.2 µs clocks are available for generating a sequence of eight pulses in the hardware-strobe mode.
Chapter 4 Signal Connections Figures 4-14 and 4-15 show the input and output timing requirements for the TRIG1 signal. tw Rising-edge polarity Falling-edge polarity t w = 10 ns minimum Figure 4-14. TRIG1 Input Signal Timing tw t w = 50-100 ns Figure 4-15. TRIG1 Output Signal Timing The DAQCard also uses the TRIG1 signal to initiate pretriggered data acquisition operations. In most pretriggered applications, the TRIG1 signal is generated by a software trigger.
Chapter 4 Signal Connections TRIG2 Signal Any PFI pin can externally input the TRIG2 signal, which is available as an output on the PFI1/TRIG2 pin. Refer to Figure 4-11 for the relationship of TRIG2 to the data acquisition sequence. As an input, the TRIG2 signal is configured in the edge-detection mode. You can select any PFI pin as the source for TRIG2 and configure the polarity selection for either rising or falling edge.
Chapter 4 Signal Connections Figures 4-16 and 4-17 show the input and output timing requirements for the TRIG2 signal. tw Rising-edge polarity Falling-edge polarity t w = 10 ns minimum Figure 4-16. TRIG2 Input Signal Timing tw t w = 50-100 ns Figure 4-17. TRIG2 Output Signal Timing STARTSCAN Signal Any PFI pin can externally input the STARTSCAN signal, which is available as an output on the PFI7/STARTSCAN pin.
Chapter 4 Signal Connections scan. The sample interval counter is started if you select internally triggered CONVERT*. As an output, the STARTSCAN signal reflects the actual start pulse that initiates a scan. This is true even if the starts are externally triggered by another PFI. You have two output options. The first is an active high pulse with a pulse width of 50 to 100 ns, which indicates the start of the scan.
Chapter 4 Signal Connections tw STARTSCAN t w = 50-100 ns a. Start of Scan Start Pulse CONVERT* STARTSCAN toff toff = 10 ns minimum b. Scan in Progress, Two Conversions per Scan Figure 4-19. STARTSCAN Output Signal Timing The CONVERT* pulses are masked off until the DAQCard generates the STARTSCAN signal. If you are using internally generated conversions, the first CONVERT* will appear when the onboard sample interval counter reaches zero.
Chapter 4 Signal Connections Scans generated by either an internal or external STARTSCAN signal are inhibited unless they occur within a data acquisition sequence. Scans occurring within a data acquisition sequence may be gated by either the hardware (AIGATE) signal or software command register gate. CONVERT* Signal Any PFI pin can externally input the CONVERT* signal, which is available as an output on the PFI2/CONVERT* pin.
Chapter 4 Signal Connections tw t w = 50-100 ns Figure 4-21. CONVERT* Output Signal Timing The ADC switches to hold mode within 60 ns of the selected edge. This hold-mode delay time is a function of temperature and does not vary from one conversion to the next. Separate the CONVERT* pulses by at least one conversion period. The sample interval counter on the DAQCard normally generates the CONVERT* signal unless you select some external source.
Chapter 4 Signal Connections mode, the first active edge disables the STARTSCAN signal, and the second active edge enables STARTSCAN. The AIGATE signal can neither stop a scan in progress nor continue a previously gated-off scan; in other words, once a scan has started, AIGATE does not gate off conversions until the beginning of the next scan and, conversely, if conversions are being gated off, AIGATE does not gate them back on until the beginning of the next scan.
Chapter 4 Signal Connections UISOURCE Signal Any PFI pin can externally input the UISOURCE signal, which is not available as an output on the I/O connector. The UI counter uses the UISOURCE signal as a clock to time the generation of the UPDATE* signal. You must configure the PFI pin you select as the source for the UISOURCE signal in the level-detection mode. You can configure the polarity selection for the PFI pin for either active high or active low.
Chapter 4 Signal Connections General-Purpose Timing Signal Connections The general-purpose timing signals are GPCTR0_SOURCE, GPCTR0_GATE, GPCTR0_OUT, GPCTR0_UP_DOWN, GPCTR1_SOURCE, GPCTR1_GATE, GPCTR1_OUT, GPCTR1_UP_DOWN, and FREQ_OUT. GPCTR0_SOURCE Signal Any PFI pin can externally input the GPCTR0_SOURCE signal, which is available as an output on the PFI8/GPCTR0_SOURCE pin. As an input, the GPCTR0_SOURCE signal is configured in the edge-detection mode.
Chapter 4 Signal Connections The 20 MHz or 100 kHz timebase normally generates the GPCTR0_SOURCE signal unless you select some external source. GPCTR0_GATE Signal Any PFI pin can externally input the GPCTR0_GATE signal, which is available as an output on the PFI9/GPCTR0_GATE pin. As an input, the GPCTR0_GATE signal is configured in the edge-detection mode. You can select any PFI pin as the source for GPCTR0_GATE and configure the polarity selection for either rising or falling edge.
Chapter 4 Signal Connections input (High-Z) at startup. Figure 4-26 shows the timing of the GPCTR0_OUT signal. TC GPCTR0_SOURCE GPCTR0_OUT (Pulse on TC) GPCTR0_OUT (Toggle output on TC) Figure 4-26. GPCTR0_OUT Signal Timing GPCTR0_UP_DOWN Signal This signal can be externally input on the DIO6 pin and is not available as an output on the I/O connector. The general-purpose counter 0 will count down when this pin is at a logic low and count up when it is at a logic high.
Chapter 4 Signal Connections Figure 4-27 shows the timing requirements for the GPCTR1_SOURCE signal. tp tw tw t p = 50 ns minimum t w = 23 ns minimum Figure 4-27. GPCTR1_SOURCE Signal Timing The maximum allowed frequency is 20 MHz, with a minimum pulse width of 23 ns high or low. There is no minimum frequency limitation. The 20 MHz or 100 kHz timebase normally generates the GPCTR1_SOURCE unless you select some external source.
Chapter 4 Signal Connections Figure 4-28 shows the timing requirements for the GPCTR1_GATE signal. tw Rising-edge polarity Falling-edge polarity t w = 10 ns minimum Figure 4-28. GPCTR1_GATE Signal Timing in Edge-Detection Mode GPCTR1_OUT Signal This signal is available only as an output on the GPCTR1_OUT pin. The GPCTR1_OUT signal monitors the TC board general-purpose counter 1. You have two software-selectable output options—pulse on TC and toggle output polarity on TC.
Chapter 4 Signal Connections GPCTR1_UP_DOWN Signal This signal can be externally input on the DIO7 pin and is not available as an output on the I/O connector. General-purpose counter 1 counts down when this pin is at a logic low and counts up at a logic high. This input can be disabled so that software can control the up-down functionality and leave the DIO7 pin free for general use.
Chapter 4 Signal Connections DAQCard. Figure 4-30 shows the GATE signal referenced to the rising edge of a source signal. The gate must be valid (either high or low) for at least 10 ns before the rising or falling edge of a source signal for the gate to take effect at that source edge, as shown by tgsu and tgh in Figure 4-30. The gate signal is not required to be held after the active edge of the source signal. If an internal timebase clock is used, the gate signal cannot be synchronized with the clock.
Chapter 4 Signal Connections Field Wiring Considerations Environmental noise can seriously affect the accuracy of measurements made with your DAQCard if you do not take proper care when running signal wires between signal sources and the DAQCard. The following recommendations apply mainly to analog input signal routing to the DAQCard, although they also apply to signal routing in general.
Chapter 5 Calibration This chapter discusses the calibration procedures for your DAQCard E Series card. If you are using the NI-DAQ device driver, that software includes calibration functions for performing all of the steps in the calibration process. Calibration refers to the process of minimizing measurement and output voltage errors by making small circuit adjustments. On the DAQCards, these adjustments take the form of writing values to onboard calibration DACs (CalDACs).
Chapter 5 Calibration the CalDACs with values either from the original factory calibration or from a calibration that you subsequently performed. This method of calibration is not very accurate because it does not take into account the fact that the DAQCard measurement and output voltage errors can vary with time and temperature. It is better to self-calibrate when the DAQCard is installed in the environment in which it will be used.
Chapter 5 Calibration perform an external calibration very often. You can externally calibrate your DAQCard by calling the NI-DAQ calibration function. To externally calibrate your DAQCard, use a very accurate external reference. The reference should be several times more accurate than the DAQCard itself. For example, to calibrate a 12-bit DAQCard, the external reference should be at least ± 0.005% (± 50 ppm) accurate. To calibrate a 16-bit DAQCard, the external reference should be at least ± 0.
Appendix A Specifications This appendix lists the specifications of each DAQCard in the DAQCard E Series. These specifications are typical at 25° C unless otherwise noted. DAQCard-AI-16E-4 Analog Input Input Characteristics Number of channels .......................... 16 single-ended, 16 pseudodifferential, or 8 differential (software-selectable on a per channel basis) Type of ADC..................................... Successive approximation Resolution .........................................
Appendix A Specifications for DAQCard-AI-16E-4 Input signal ranges ................. Board Gain (Software Selectable) Board Range (Software Selectable) Bipolar Unipolar 0.5 ±10 V — 1 ±5 V 0 to 10 V 2 ±2.5 V 0 to 5 V 5 ±1 V 0 to 2 V 10 ±500 mV 0 to 1 V 20 ±250 mV 0 to 500 mV 50 ±100 mV 0 to 200 mV 100 ±50 mV 0 to 100 mV Input coupling ................................... DC Max working voltage (signal + common mode) ................
Appendix A Specifications for DAQCard-AI-16E-4 Transfer Characteristics Relative accuracy ............................. ± 0.5 LSB typ dithered, ± 1.5 LSB max undithered DNL .................................................. ± 0.5 LSB typ, ± 1.0 LSB max No missing codes .............................. 12 bits, guaranteed Offset error Pregain error after calibration ..... ± 16 µV max Pregain error before calibration... ± 4.0 mV max Postgain error after calibration.... ± 1.
Appendix A Specifications for DAQCard-AI-16E-4 Settling time for full-scale step..................... 0.5 System noise in LSB rms, not including quantization.......... Accuracy Gain ±0.012% (±0.5 LSB) ±0.024% (±1 LSB) 4 µs typ, 8 µs max 4 µs max Gain Noise, dither off Noise, dither on 0.5 to 10 0.2 — 0.5 to 20 — 0.5 20 0.25 — 50 0.5 0.7 100 0.9 1.0 Crosstalk ........................................... -80 dB, DC to 100 kHz Stability Recommended warm-up time ............
Appendix A Specifications for DAQCard-AI-16E-4 Digital I/O Number of channels .......................... 8 input/output Compatibility .................................... TTL/CMOS Digital logic levels .......... Level Min Max Input low voltage 0V 0.8 V Input high voltage 2V 5V Input low current (Vin = 0 V) — -320 µA Input high current (Vin = 5 V) — 10 µA Output low voltage (IOL = 24 mA) — 0.4 V Output high voltage (IOH = 13 mA) 4.35 V — Power-on state.................................
Appendix A Specifications for DAQCard-AI-16E-4 Triggers Analog Trigger Source ............................................... ACH<0..15>, external trigger (PFI0/TRIG1) Level ................................................. ± full-scale, internal; ± 10 V, external Slope ................................................. Positive or negative (software selectable) Resolution ......................................... 8 bits, 1 in 256 Hysteresis..........................................
Appendix A Note: Specifications for DAQCard-AI-16E-4 These power usage figures do not include the power used by external devices that are connected to the fused supply present on the I/O connector. Note also that under ordinary operation, the DAQCard has a current requirement of 270–290 mA; but if the analog inputs being sampled are overdriven at high gains, or if the analog inputs are left floating when the DAQCard is not in use, the current may increase to 400 mA.
DAQCard-AI-16XE-50 Analog Input Input Characteristics Number of channels ...........................16 single-ended or 8 differential (software-selectable) Type of ADC .....................................Successive approximation Resolution ..........................................16 bits, 1 in 65,536 Maximum sampling rate.....................200 kS/s (single-channel), 20 kS/s guaranteed (scanning; gain = 1, 2, 10), 17 kS/s (scanning; gain = 100) Input signal ranges .................
Appendix A Specifications for DAQCard-AI-16XE-50 Transfer Characteristics Relative accuracy .............................. ± 1.5 LSB typ, ± 1.75 LSB max DNL .................................................. +1.5, -0.75 LSB typ, +1.75, -1.0 LSB max No missing codes .............................. 16 bits, guaranteed Offset error Pregain error after calibration ..... ± 3 µV max Pregain error before calibration... ± 280 µV max Postgain error after calibration....
Appendix A Specifications for DAQCard-AI-16XE-50 Dynamic Characteristics Bandwidth Gain = 1, 2 .................................. 69 kHz Gain = 10 .................................... 66 kHz Gain = 100 .................................. 39 kHz Settling time for full-scale step Gain = 1, 2, 10 ............................ 50 µs max to ±1 LSB Gain = 100 .................................. 60 µs max to ±1 LSB 50 µs typ to ±4 LSB System noise (including quantization noise) Gain = 1, 2, 10 .....................
Appendix A Specifications for DAQCard-AI-16XE-50 Digital I/O Number of channels .......................... 8 input/output Compatibility .................................... TTL/CMOS Digital logic levels .......... Level Min Max Input low voltage 0V 0.8 V Input high voltage 2V 5V Input low current — -320 µA Input high current — 10 µA Output low voltage (IOL = 24 mA) — 0.4 V Output high voltage (IOH = 13 mA) 4.35 V — Power-on state...................................
Appendix A Specifications for DAQCard-AI-16XE-50 DMA modes ...................................... Single transfer, demand transfer Triggers Digital Trigger Compatibility .................................... TTL Response ........................................... Rising or falling edge Pulse width........................................ 10 ns min Power Requirement +5 VDC (±5%) .................................. 230 mA active, 90 mA standby Power available at I/O connector....... +4.65 to +5.
Appendix B Optional Cable Connector Descriptions This appendix describes the connectors on the optional cables for the DAQCard E Series cards. Figure B-1 shows the pin assignments for the 68-pin AI connector. This connector is available when you use the PSHR68-68M or PR6868 cable assemblies with the DAQCard-AI-16E-4 or DAQCard-AI-16XE-50. National Instruments Corporation B-1 DAQCard E Series User Manual This document was created with FrameMaker 4.0.
Appendix B Optional Cable Connector Descriptions ACH8 ACH1 AIGND ACH10 ACH3 AIGND ACH4 AIGND ACH13 ACH6 AIGND ACH15 Reserved Reserved Reserved DIO4 DGND DIO1 DIO6 DGND +5 V DGND DGND PFI0/TRIG1 PFI1/TRIG2 DGND +5 V DGND PFI5/UPDATE* PFI6/WFTRIG DGND PFI9/GPCTR0_GATE GPCTR0_OUT FREQ_OUT 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 ACH0 AIGND ACH9 ACH2 AIGN
Appendix B Optional Cable Connector Descriptions Figure B-2 shows the pin assignments for the 50-pin AI connector. This connector is available when you use the SH6850 or R6850 cable assemblies with the PSHR68-68M.
Appendix C PC Card Questions and Answers This appendix contains a list of common questions and answers relating to PC Card (PCMCIA) operation. The questions are grouped according to the type of information requested. You may find this information useful if you are having difficulty with the PCMCIA system software configuration and you are using Windows 3.1. Note: If you are using Windows 95, the operation system will automatically configure your PC Card.
Appendix C PC Card Questions and Answers Operation 1. My PC Card works when inserted before power-on time, but it does not work when hot inserted. What is wrong? You may have an interrupt conflict. If you have a utility such as MSD.EXE, run it to determine the allocated interrupts, then refer to question 5 in the Resources section. MSD.EXE is usually shipped with Microsoft Windows. 2. My computer locks up when I use a PC Card.
Appendix C PC Card Questions and Answers by Card Services and/or the memory manager. Second, you can attempt to determine all of the memory that Card Services can possibly use and then exclude all but that memory from use by Card Services. 2. How do I determine all of the memory that Card Services can use? One way to find out which memory addresses Card Services can use is to run a utility such as MSD.EXE that scans the system and tells you how the system memory is being used.
Appendix C PC Card Questions and Answers managers often consume an enormous amount of memory, and you will need to determine what memory is really usable by Card Services. When you have determined what memory is available for Card Services, reinstall your memory manager and make the necessary changes to provide Card Services with the memory needed. We suggest that you use the minimum amount of memory for Card Services, namely 4 to 12 kB, which frees more memory for the memory manager.
Appendix D Common Questions This appendix contains a list of commonly asked questions and their answers relating to usage and special features of your DAQCard E Series card. General Information 1. What are the DAQCard E Series cards? The DAQCard E Series cards are switchless and jumperless, enhanced DAQCards that use the DAQ-STC for timing. 2.
Appendix D Common Questions channel at 250 kS/s or two channels at 125 kS/s per channel illustrates the relationship. Notice, however, that some DAQCard E Series cards have settling times that vary with gain and accuracy. See Appendix A for exact specifications. 4. What type of 5 V protection do the DAQCard E Series cards have? The DAQCard E Series cards have 5 V lines equipped with a self-resetting 250 mA fuse. Installation and Configuration 1.
Appendix D Common Questions Analog Input and Output 1. I’m using my DAQCard in differential analog input mode and I have connected a differential input signal, but my readings are random and drift rapidly. What’s wrong? Check your ground reference connections. Your 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 referenced to the same ground level as the DAQCard reference.
Appendix D 3. Common Questions What is the difference in timebases between the Am9513 counter/timer and the DAQ-STC? The DAQ-STC-based boards have a 20 MHz timebase. The Am9513-based boards have a 1 or 5 MHz timebase. 4. The counter/timer examples supplied with NI-DAQ are not compatible with an DAQCard E Series card.
Appendix D 7. Common Questions How does NI-DAQ treat bogus missed data transfer errors that can arise during DMA-driven GPCTR buffered-input operations? When doing buffered transfers using GPCTR function calls with DMA, you can call GPCTR_Watch to indicate dataTransfer errors. NI-DAQ takes a snapshot of transfers and counts how many points have been transferred.
Appendix E Power-Management Modes This appendix describes the power-management modes of the DAQCard E Series cards. Note: • Normal Mode—This is the normal operating mode of the DAQCard E Series cards in which all the circuits are fully functional. See the specifications for each DAQCard in Appendix A for power consumption in the normal mode. The DAQCard is automatically configured for normal mode upon insertion. • Power-Down Mode—In this mode, the digital circuitry is powered on and is functional.
Appendix E Power-Management Modes Table E-1. DAQCard E Series User Manual DAQCard E Series Power-Management Modes Normal Mode Power-Down Mode Analog Input Functional. Protected to ±25 V. Impedance > 1 GΩ. Nonfunctional. Draws negligible power. Protected to ±10 V. Impedance = 1.0 kΩ, which is the input protection resistance. Calibration Circuitry Functional. Both analog input and analog output can be fully calibrated. Partially functional. Draws negligible power.
Appendix F Customer Communication For your convenience, this appendix contains forms to help you gather the information necessary to help us solve your technical problems and a form you can use to comment on the product documentation. When you contact us, we need the information on the Technical Support Form and the configuration form, if your manual contains one, about your system configuration to answer your questions as quickly as possible.
FaxBack Support FaxBack is a 24-hour information retrieval system containing a library of documents on a wide range of technical information. You can access FaxBack from a touch-tone telephone at (512) 418-1111. E-Mail Support (currently U.S. only) You can submit technical support questions to the appropriate applications engineering team through e-mail at the Internet addresses listed below. Remember to include your name, address, and phone number so we can contact you with solutions and suggestions.
Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware, and use the completed copy of this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently.
DAQCard E Series Hardware and Software Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item. Complete a new copy of this form each time you revise your software or hardware configuration, and use this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently.
Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. Title: DAQCard E Series User Manual Edition Date: June 1996 Part Number: 321138A-01 Please comment on the completeness, clarity, and organization of the manual.
Glossary Prefix Meaning Value p- pico- 10-12 n- nano- 10-9 µ- micro- 10-6 m- milli- 10-3 k- kilo- 103 M- mega- 106 G- giga- 109 Symbols ˚ degrees – negative of, or minus Ω ohms / per % percent ± plus or minus + positive of, or plus square root of +5 V +5 VDC source signal National Instruments Corporation G-1 DAQCard E Series User Manual This document was created with FrameMaker 4.0.
Glossary A A amperes AC alternating current ACH analog input channel signal A/D analog-to-digital ADC A/D converter ADIO analog/digital input/output AI analog input AIGATE analog input gate signal AIGND analog input ground signal AISENSE analog input sense signal AOGND analog output ground signal ASIC application-specific integrated circuit B BBS bulletin board support BIOS basic input/output system or built-in operating system C C Celsius CalDAC calibration DAC CH channel
Glossary CMOS complementary metal-oxide semiconductor CMRR common-mode rejection ratio CONVERT* convert signal CTR counter D D/A digital-to-analog DAC D/A converter DAC0OUT analog channel 0 output signal DAC1OUT analog channel 1 output signal DAQ data acquisition DAQCard data acquisition card dB decibels DC direct current DGND digital ground signal DIFF differential DIO digital input/output DMA direct memory access DNL differential nonlinearity DO digital output DOS dis
Glossary EISA Extended Industry Standard Architecture EPROM erasable programmable read-only memory EXTREF external reference signal EXTSTROBE external strobe signal F F farads FIFO first-in-first-out FREQ_OUT frequency output signal ft feet G GPCTR0_GATE general purpose counter 0 gate signal GPCTR1_GATE general purpose counter 1 gate signal GPCTR0_OUT general purpose counter 0 output signal GPCTR1_OUT general purpose counter 1 output signal GPCTR0_SOURCE general purpose counter 0 c
Glossary I ICTR input counter I/O input/output IOH current, output high IOL current, output low IRQ interrupt request signal ISA Industry Standard Architecture L LED light emitting diode LSB least significant bit M m meter MB megabytes of memory MSB most significant bit N NC not connected internally NRSE nonreferenced single-ended O OUT output signal National Instruments Corporation G-5 DAQCard E Series User Manual
Glossary P PC personal computer PCMCIA Personal Computer Memory Card Association PFI Programmable Function Input PGIA Programmable Gain Instrumentation Amplifier ppm parts per million pu pullup PWRDOWN power down signal R RAM random access memory REF reference rms root mean square RSE referenced single-ended RTD resistive temperature device S s seconds S samples SCANCLK scan clock signal SCXI Signal Conditioning eXtensions for Instrumentation SE single-ended inputs SISOURC
Glossary T TC terminal count signal tgh gate hold time tgsu gate setup time tgw gate pulse width THD total harmonic distortion tout output delay time TRIG trigger signal tsc source clock period tsp source pulse width TTL transistor-transistor logic U UI update interval UISOURCE update interval counter clock signal UPDATE* update signal V V volts VCC positive voltage supply VDC volts direct current VI virtual instrument VIH volts, input high VIL volts, input low Natio
Glossary Vin volts in VO volts, output VOH volts, output high VOL volts, output low Vref reference voltage W W watts WFTRIG waveform generation trigger signal DAQCard E Series User Manual G-8 National Instruments Corporation
Index Numbers power-management modes (table), E-2 questions about, D-3 selection considerations, 3-6 to 3-7 signal connections, 4-10 to 4-11 analog input specifications DAQCard-AI-16E-4, A-1 to A-4 amplifier characteristics, A-3 dynamic characteristics, A-3 to A-4 input characteristics, A-1 to A-2 stability, A-4 transfer characteristics, A-3 DAQCard-AI-16XE-50, A-8 to A-10 amplifier characteristics, A-9 dynamic characteristics, A-9 to A-10 input characteristics, A-8 stability, A-10 transfer characteristic
Index D block diagrams DAQCard-AI-16E-4, 3-1 DAQCard-AI-16XE-50, 3-2 bulletin board support, F-1 DAQCard clocks, 3-14 DAQCard E Series. See also hardware overview.
Index E ground-referenced signal sources, 4-15 illustration, 4-15 nonreferenced or floating signal sources, 4-16 to 4-17 illustration, 4-16 recommended configuration (figure), 4-13 single-ended connections, 4-18 floating signal sources (RSE), 4-19 grounded signal sources (NRSE), 4-19 to 4-20 when to use, 4-14 differential input mode, questions about, D-3 digital I/O operation, 3-12 power-management modes (table), E-2 questions about, D-3 to D-5 signal connections, 4-21 to 4-22 specifications DAQCard-AI-16
Index G H general-purpose timing signal connections, 4-37 to 4-43 FREQ_OUT signal, 4-43 GPCTR0_GATE signal, 4-38 GPCTR0_OUT signal, 4-38 to 4-39 GPCTR0_SOURCE signal, 4-37 to 4-38 GPCTR0_UP_DOWN signal, 4-39 GPCTR1_GATE signal, 4-40 to 4-41 GPCTR1_OUT signal, 4-41 GPCTR1_SOURCE signal, 4-39 to 4-40 GPCTR1_UP_DOWN signal, 4-42 to 4-43 questions about, D-4 GPCTR0_GATE signal, 4-38 GPCTR0_OUT signal DAQCard-AI-16E-4 (table), 4-6 DAQCard-AI-16XE-50 (table), 4-9 description, 4-5 general-purpose timing connect
Index pin assignments (figure) 50-pin AI connector, B-3 68-pin AI connector, B-2 DAQCard-AI-16E-4 and DAQCard-AI-16XE-50 (figure), 4-2 signal descriptions (table), 4-3 to 4-5 differential connections DIFF input configuration, 4-14 floating signal sources, 4-16 to 4-17 ground-referenced signal sources, 4-15 nonreferenced signal sources, 4-16 to 4-17 recommended configuration (figure), 4-13 single-ended connections, 4-18 to 4-20 floating signal sources (RSE configuration), 4-19 grounded signal sources (NRSE
Index PFIs (programmable function inputs), 4-24 connecting to external signal source (warning), D-5 overview, 4-22 questions about, D-5 signal routing, 3-14 timing input connections, 4-24 illustration, 4-23 PGIA (programmable gain instrumentation amplifier) analog input connections, 4-11 illustration, 4-11 common-mode signal rejection, 4-20 differential connections floating signal sources, 4-16 to 4-17 ground-referenced signal sources, 4-15 single-ended connections floating signal sources (figure), 4-19 gr
Index signal connections analog input, 4-10 to 4-11 digital I/O, 4-21 to 4-22 field wiring considerations, 4-44 input configurations, 4-12 to 4-20 common-mode signal rejection, 4-20 differential connections DIFF input configuration, 4-14 floating signal sources, 4-16 to 4-17 ground-referenced signal sources, 4-15 nonreferenced signal sources, 4-16 to 4-17 recommended configuration (figure), 4-13 single-ended connections, 4-18 to 4-20 floating signal sources (RSE configuration), 4-19 grounded signal sources
Index software programming choices LabVIEW and LabWindows/CVI application software, 1-2 to 1-3 NI-DAQ driver software, 1-3 to 1-4 register-level programming, 1-4 specifications DAQCard-AI-16E-4 analog input, A-1 to A-4 amplifier characteristics, A-3 dynamic characteristics, A-3 to A-4 input characteristics, A-1 to A-2 stability, A-4 transfer characteristics, A-3 digital I/O, A-5 environment, A-7 physical, A-7 power requirements, A-6 to A-7 timing I/O, A-5 to A-6 triggers analog trigger, A-6 digital trigger
Index T timing I/O specifications DAQCard-AI-16E-4, A-5 to A-6 DAQCard-AI-16XE-50, A-11 to A-12 timing signal routing, 3-13 to 3-14 CONVERT* signal routing (figure), 3-13 DAQCard clocks, 3-14 programmable function inputs, 3-14 transfer characteristic specifications DAQCard-AI-16E-4, A-3 DAQCard-AI-16XE-50, A-9 TRIG1 signal input timing (figure), 4-28 output timing (figure), 4-28 timing connections, 4-27 to 4-28 TRIG2 signal input timing (figure), 4-30 output timing (figure), 4-30 timing connections, 4-29
Index U V UISOURCE signal, 4-36 unipolar input DAQCard-AI-16E-4, 3-3 DAQCard-AI-16XE-50, 3-4 to 3-5 mixing bipolar and unipolar channels (note), 3-5 unpacking DAQCard E Series, 1-6 VCC signal DAQCard-AI-16E-4 (table), 4-6 DAQCard-AI-16XE-50 (table), 4-8 DAQCard E Series User Manual W Windows 95, configuring your PC Card (note), C-1 wiring considerations, 4-44 I -10 National Instruments Corporation
