National Instruments NI-9203 User Manual And Specifications
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National Instruments NI-9203 User Manual And Specifications

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  • Page 1 NI-9203...

  • Page 2: Table Of Contents

    USER GUIDE AND SPECIFICATIONS NI cDAQ-9172 Français Deutsch ni.com/manuals Contents Introduction ..................... 4 Safety Guidelines ..................5 Safety Guidelines for Hazardous Voltages ........5 Related Documentation................6 Device Documentation and Specifications ........9 Training Courses................9 Technical Support on the Web............9 Installing the Software ................
  • Page 3 Analog Input ....................20 Analog Input Triggering..............20 AI Start Trigger Signal..............21 AI Reference Trigger Signal .............22 AI Pause Trigger Signal ............24 Analog Input Timing Signals ............24 AI Sample Clock ...............24 AI Sample Clock Timebase............25 Convert Behavior For Analog Input Modules......25 Getting Started with AI Applications in Software ......28 Analog Output ..................28 Analog Output Data Generation Methods........28 Software-Timed Generations ............29...
  • Page 4 Physical Characteristics ..............81 Safety ....................81 Environmental.................. 82 Shock and Vibration ................ 82 Electromagnetic Compatibility ............83 CE Compliance ................83 Environmental Management............83 Where to Go for Support................. 84 © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 5: Introduction

    Introduction This user guide describes how to use the National Instruments cDAQ-9172 chassis and lists specifications. For an interactive demonstration of how to install the NI cDAQ-9172, go to and enter ni.com/info daqinstall The NI cDAQ-9172 is an eight-slot USB chassis designed for use with C Series I/O modules.

  • Page 6: Safety Guidelines

    Make sure that chassis and circuits connected to the module are properly insulated from human contact. Caution The NI cDAQ-9172 chassis provides no isolation, but some modules offer isolation. Follow the safety guidelines for each module when using hazardous voltage. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 7: Related Documentation

    Software Document/Description Location/Topic NI-DAQmx for Windows Start»Programs» DAQ Getting Started Guide—describes how to National Instruments» NI-DAQ»DAQ Getting Started install and use the NI-DAQmx driver software Guide for Windows and your data acquisition (DAQ) device, how to confirm the device is...
  • Page 8 From the Contents tab, Taking Contains the conceptual and how-to information you Measurements need to acquire and analyze measurement data in LabVIEW, including common measurements, measurement fundamentals, NI-DAQmx key concepts, and device considerations. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 9 Library or NI-DAQmx Visual C++ NI-DAQmx methods and Class Library properties. ANSI C without NI-DAQmx Help Start»All Programs» NI Application Software National Instruments» NI-DAQ»NI-DAQmx Help NI-DAQmx C Reference Start»All Programs» Help—describes the National Instruments» NI-DAQmx Library NI-DAQ»NI-DAQmx C Reference functions.

  • Page 10: Device Documentation And Specifications

    NI products, NI offers training courses. To enroll in a course or obtain a detailed course outline, refer to ni.com/training Technical Support on the Web For additional support, refer to ni.com/support zone.ni.com © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 11: Installing The Software

    Installing the Software Installing NI-DAQmx The DAQ Getting Started Guide, which you can download at ni.com/ , offers NI-DAQmx users step-by-step instructions for installing manuals software and hardware, configuring channels and tasks, and getting started developing an application. Installing Other Software If you are using other software, refer to the installation instructions that accompany your software.

  • Page 12: Installing The Ni Cdaq-9172

    (1.81 in.) 24.8 mm (0.98 in.) 58.9 mm (2.32 in.) 31.7 mm (1.25 in.) 19.1 mm (0.75 in.) 23.2 mm (0.91 in.) Figure 2. NI cDAQ-9172 with Dimensions in Millimeters (Inches) © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 13: Mounting The Ni Cdaq-9172

    Mounting the NI cDAQ-9172 You can mount the NI cDAQ-9172 chassis using a desktop, a 35 mm DIN-Rail, or a panel mount accessory kit. For accessory ordering information, refer to ni.com Caution Your installation must meet the following requirements: • Allows 25.4 mm (1 in.) of clearance above and below the NI cDAQ-9172 chassis for air circulation.

  • Page 14: Ni 9910 Din-Rail Kit

    To mount the chassis on a panel, align the chassis on the panel mount accessory. Attach the chassis to the panel mount kit using two M4 × 17 screws (as shown in Figure 5). National Instruments provides these screws with the panel mount kit. You must use these screws because they are the correct depth and thread for the panel.
  • Page 15 can be used with M4, M5, No. 8, or No.10 panhead screws. Figure 5 illustrates the panel dimensions and installation on the NI cDAQ-9172 chassis. Refer to the documentation included with the NI 9905 Panel Mount Kit for more detailed dimensions. 330.2 mm (13.00 in.) NATIONAL...

  • Page 16: Setting Up The Ni Cdaq-9172

    . The DAQ Getting Started Guide is available ni.com/support after installation from Start»All Programs»National Instruments»NI-DAQ»DAQ Getting Started Guide. Other NI documentation is available from ni.com/manuals If you are not using any mounting accessories, attach the provided rubber standoffs to the back of the NI cDAQ-9172 chassis.
  • Page 17 Squeeze both C Series I/O module latches, insert the I/O module into the module slot, and press until both latches lock the module in place. Connect the NI cDAQ-9172 chassis with the supplied USB cable to any available USB port on your computer. Connect the power source to the NI cDAQ-9172 chassis.

  • Page 18: Understanding Led Indications

    The Ready LED is lit when the NI cDAQ-9172 chassis is ready for use. The color indicates whether the USB connection is Full-Speed or Hi-Speed. Table 3. Ready LED Definition Amber Hi-Speed (480 Mbit/sec) Green Full-Speed (12 Mbit/sec) USB connection is not established © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 19: Using The Ni Cdaq-9172

    I/O Module Figure 8. NI cDAQ-9172 Block Diagram C Series I/O Modules National Instruments C Series I/O modules provide built-in signal conditioning and screw terminal, spring terminal, BNC, D-SUB, or RJ-50 connectors. A wide variety of I/O types are available, allowing you to customize the cDAQ system to meet your application needs.

  • Page 20: Correlated Vs. Static Dio Modules

    The NI cDAQ-9172 supports four independent high-speed data streams; allowing for up to four simultaneous hardware timed tasks, such as analog input, analog output, buffered counter/timers, and correlated digital input/output. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 21: Pfi Signals

    PFI Signals The PFI signals, available through correlated digital input and output modules installed in slots 5 and/or 6, provide access to advanced features such as triggering, synchronization, and counter/timers. Refer to the section for more information. The PFI pins have a digital filter circuit at the inputs that is configurable on a per-line basis.

  • Page 22: Ai Start Trigger Signal

    NI-DAQmx Help or the LabVIEW Help in version 8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 23: Ai Reference Trigger Signal

    Using an Analog Source Some C Series I/O modules can generate a trigger based on an analog signal. In NI-DAQmx, this is called the Analog Comparison Event. When you use an analog trigger source for ai/StartTrigger, the acquisition begins on the first rising edge of the Analog Comparison Event signal. Routing AI Start Trigger to an Output Terminal You can route ai/StartTrigger to any output PFI terminal.
  • Page 24 NI-DAQmx Help or the LabVIEW Help in version 8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 25: Ai Pause Trigger Signal

    NI-DAQmx Help or the LabVIEW Help in version 8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 26: Ai Sample Clock Timebase

    AI Convert Clock pulses evenly throughout the sample. NI-DAQmx uses the same amount of padding for all the modules in the task. To explicitly specify the conversion rate, use the © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 27 ActiveDevs and AI Convert Clock Rate properties using the DAQmx Timing property node or functions. Simultaneous Sample-and-Hold Simultaneous sample-and-hold (SSH) C Series analog input modules contain multiple A/D converters or circuitry that allows all the input channels to be sampled at the same time. These modules sample their inputs on every Sample Clock pulse.
  • Page 28 Refer to the KnowledgeBase document, C Series Modules Supported in the NI cDAQ-9172 CompactDAQ, for more information. To access this KnowledgeBase, go to and enter the info code ni.com/info rdcdaq © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 29: Getting Started With Ai Applications In Software

    8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 30: Software-Timed Generations

    A buffer is a temporary storage in computer memory for generated samples. In a buffered generation, data is moved from a host buffer to the NI cDAQ-9172 onboard FIFO before it is written to the C Series I/O modules. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 31: Analog Output Triggering

    One property of buffered I/O operations is sample mode. The sample mode can be either finite or continuous: • Finite—Finite sample mode generation refers to the generation of a specific, predetermined number of data samples. After the specified number of samples is written out, the generation stops. •...

  • Page 32: Analog Output Timing Signals

    If you do not use triggers, you can begin a generation with a software command. If you are using an internal sample clock, you can specify a delay from the start trigger to the first sample. For © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 33 LabVIEW Help in version 8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 34: Ao Pause Trigger Signal

    Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the LabVIEW Help in version 8.0 or later for more information. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 35: Minimizing Glitches On The Output Signal

    The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help»Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals Using an Analog Source Some C Series I/O modules can generate a trigger based on an analog signal.

  • Page 36: Digital I/O

    I/O C Series module and the capabilities of the module. Table 4. Digital Module Slot Features Digital Waveform/Change Slots Static DIO Counter/Timer Detection — — — — — — — — © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 37: Static Dio

    Table 4. Digital Module Slot Features (Continued) Digital Waveform/Change Slots Static DIO Counter/Timer Detection — — — — — — — — Requires the use of a correlated digital I/O module. Static DIO Each of the DIO lines can be used as a static DI or DO line. You can use static DIO lines to monitor or control digital signals on some C Series I/O modules.

  • Page 38: Digital Waveform Generation (Correlated Output)

    8.0 or later for more information. The NI-DAQmx Help is available after installation from Start» All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. To view the LabVIEW Help, in version 8.0 or later, select Help» Search the LabVIEW Help in LabVIEW. Alternately, to download the LabVIEW Help, go to ni.com/manuals...

  • Page 39: Buffered Digital Waveform Generation

    Buffered Digital Waveform Generation A buffer is a temporary storage in computer memory for generated samples. In a buffered generation, data is moved from a host buffer to the NI cDAQ-9172 onboard FIFO before it is written to the C Series I/O modules.

  • Page 40: Change Detection Event

    NI-DAQmx generates an error instead of sending the line configuration command. During the line configuration command, the output lines are maintained without glitching. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 41: Pfi

    The filters allow the rejection of noise caused by noisy environments, bounces on switches, and so on. Refer to the NI-DAQmx Help for more information. The NI-DAQmx Help is available after installation from Start»All Programs»National Instruments» NI-DAQ»NI-DAQmx Help. Counters The NI cDAQ-9172 chassis has two general-purpose 32-bit counter/timers and one frequency generator, as shown in Figure 15.
  • Page 42 Counters have seven input signals, although in most applications only a few inputs are used. For information about connecting the counter signals, refer to the Default Counter/Timer Routing section. The following sections describe various counter applications. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 43: Counter Input Applications

    Counter Input Applications Counting Edges In edge counting applications, the counter counts edges on its Source after the counter is armed. You can configure the counter to count rising or falling edges on its Source input. You also can control the direction of counting (up or down).
  • Page 44 Gate. Counter Armed Sample Clock (Sample on Rising Edge) SOURCE Counter Value Buffer Figure 18. Buffered (Sample Clock) Edge Counting © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 45: Pulse-Width Measurement

    Controlling the Direction of Counting In edge counting applications, the counter can count up or down. You can configure the counter to do the following: • Always count up • Always count down • Count up when the Counter n B input is high; count down when it is low For information on connecting counter signals, refer to the Default...
  • Page 46 The NI cDAQ-9172 transfers the stored values to host memory. Figure 20 shows an example of a buffered pulse-width measurement. GATE SOURCE Counter Value Buffer Figure 20. Buffered Pulse-Width Measurement © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 47: Period Measurement

    Note If you are using an external signal as the Source, at least one Source pulse should occur between each active edge of the Gate signal. This condition ensures that correct values are returned by the counter. If this condition is not met, consider using duplicate count prevention, described in the Duplicate Count Prevention section.
  • Page 48 If this condition is not met, consider using duplicate count prevention, described in the Duplicate Count Prevention section. For information about connecting counter signals, refer to the Default Counter/Timer Routing section. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 49: Semi-Period Measurement

    Semi-Period Measurement In semi-period measurements, the counter measures a semi-period on its Gate input signal after the counter is armed. A semi-period is the time between any two consecutive edges on the Gate input. You can route an internal or external periodic clock signal (with a known period) to the Source input of the counter.

  • Page 50: Frequency Measurement

    0.02 Hz, use a slower known timebase. You can configure the counter to measure one period of the gate signal. The frequency of F1 is the inverse of the period. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 51 Method 1b—Measure Low Frequency With One Counter (Averaged) This method is good for low to medium frequency signals. Use this method to measure several periods of your signal using a known timebase. Figure 25 illustrates this method. Intervals Measured … Gate 1 2 ...
  • Page 52 In this method, you generate a long pulse using the signal to measure. You then measure the long pulse with a known timebase. The NI cDAQ-9172 chassis can measure this long pulse more accurately than the faster input signal. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 53 You can route the signal to measure to the Source input of Counter 0, as shown in Figure 27. Assume this signal to measure has frequency F1. Configure Counter 0 to generate a single pulse that is the width of N periods of the source input signal.
  • Page 54 An advantage of Method 2 is that the measurement completes in a known amount of time. • Method 3 measures high and low frequency signals accurately. However, it requires two counters. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 55: Position Measurement

    Table 6 summarizes some of the differences in methods of measuring frequency. Table 6. Frequency Measurement Method Comparison Measures High Measures Low Number of Frequency Frequency Number of Measurements Signals Signals Method Counters Used Returned Accurately Accurately Poor Good Many Fair Good 1 or 2...
  • Page 56 Each cycle results in four increments or decrements, as shown in Figure 30. Ch A Ch B Counter Value Figure 30. X4 Encoding © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 57 Channel Z Behavior Some quadrature encoders have a third channel, channel Z, which is also referred to as the index channel. A high level on channel Z causes the counter to be reloaded with a specified value in a specified phase of the quadrature cycle.

  • Page 58: Two-Signal Edge-Separation Measurement

    Gate signal and an active edge of the AUX signal. The counter then stores the count in a hardware save register and ignores other edges on its inputs. Software then reads the stored count. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 59 Figure 33 shows an example of a single two-signal edge-separation measurement. Counter Armed Measured Interval GATE SOURCE Counter Value HW Save Register Figure 33. Single Two-Signal Edge-Separation Measurement Buffered Two-Signal Edge-Separation Measurement Buffered and single two-signal edge-separation measurements are similar, but buffered measurement measures multiple intervals.

  • Page 60: Counter Output Applications

    The delay and pulse width are measured in terms of a number of active edges of the Source input. After the Start Trigger signal pulses once, the counter ignores the Gate input. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 61 Figure 36 shows a generation of a pulse with a pulse delay of four and a pulse width of three (using the rising edge of Source). GATE (Start Trigger) SOURCE Figure 36. Single Pulse Generation with Start Trigger Retriggerable Single Pulse Generation The counter can output a single pulse in response to each pulse on a hardware Start Trigger signal.

  • Page 62: Pulse Train Generation

    Counter n Internal Output signal is equal to the frequency of the Source input divided by M + N. For information on connecting counter signals, refer to the Default Counter/Timer Routing section. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 63: Frequency Generation

    Frequency Generation You can generate a frequency by using a counter in pulse train generation mode or by using the frequency generator circuit. Using the Frequency Generator The frequency generator can output a square wave at many different frequencies. The frequency generator is independent of the two general-purpose 32-bit counter/timer modules on the NI cDAQ-9172 chassis.

  • Page 64: Frequency Division

    In this section, n refers to either Counter 0 or 1. For example, Counter n Source refers to two signals—Counter 0 Source (the source input to Counter 0) and Counter 1 Source (the source input to Counter 1). © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 65: Counter N Source Signal

    Counter n Source Signal The selected edge of the Counter n Source signal increments and decrements the counter value, depending upon the application the counter is performing. Table 7 lists how this terminal is used in various applications. Table 8 lists Counter n Source minimum pulse width. Table 7.

  • Page 66: Counter N Gate Signal

    Routing Counter n Gate to an Output Terminal You can route Counter n Gate to any output PFI terminal. Counter n Aux Signal The Counter n Aux signal indicates the first edge in a two-signal edge-separation measurement. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 67: Counter N A, Counter N B, And Counter N Z Signals

    Routing a Signal to Counter n Aux Each counter has independent input selectors for the Counter n Aux signal. You can route the following signals to the Counter n Aux input: • Any PFI terminal • ai/ReferenceTrigger • ai/StartTrigger • Analog Comparison Event In addition, you can route Counter 1 Internal Output, Counter 1 Gate, Counter 1 Source, or Counter 0 Gate to Counter 0 Aux.

  • Page 68: Counter N Internal Output And Counter N Tc Signals

    Routing Frequency Output to a Terminal You can route Frequency Output to any output PFI terminal. The FREQ OUT signal can also route to DO Sample Clock and DI Sample Clock. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 69: Default Counter/Timer Routing

    Default Counter/Timer Routing Counter/timer signals are available to correlated digital I/O C Series modules in slots 5 and/or 6. To determine the signal routing options for modules installed in your system, refer to the Device Routes tab in MAX. Counter Triggering Counters support three different triggering actions: •...

  • Page 70: Other Counter Features

    Pass Signal) Pass Filter Not Pass Filter 125 ns 125 ns 100 ns 6.425 µs 6.425 µs 6.400 µs 2.56 ms ~101,800 2.56 ms 2.54 ms Disabled — — — © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 71: Prescaling

    You can configure the filter setting for each input independently. On power up, the filters are disabled. Figure 41 shows an example of a low to high transition on an input with its filter set to 125 ns (N = 5). PFI Terminal Filtered input goes high when terminal is sampled...

  • Page 72: Duplicate Count Prevention

    Source edge after the rising edge of Gate. The details of when exactly the counter synchronizes the Gate signal vary depending on the synchronization mode. Synchronization modes are described in the Synchronization Modes section. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 73 Example Application That Works Incorrectly (Duplicate Counting) In Figure 44, after the first rising edge of Gate, no Source pulses occur, which means that the counter does not write the correct data to the buffer. No Source edge, so no value written to buffer.

  • Page 74: Synchronization Modes

    Other internal source mode • External source mode In NI-DAQmx, the chassis uses 80 MHz source mode if you perform the following: • Perform a position measurement • Select duplicate count prevention © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...
  • Page 75 Otherwise, the mode depends on the signal that drives Counter n Source. Table 10 describes the conditions for each mode. Table 10. Synchronization Mode Conditions Duplicate Count Type of Signal Driving Synchronization Prevention Enabled Measurement Counter n Source Mode 80 MHz Source Position Measurement 80 MHz Source 80 MHz Timebase...

  • Page 76: Digital Routing And Clock Generation

    Routes and generates the main clock signals for the NI cDAQ-9172 chassis. To determine the signal routing options for C Series I/O modules installed in the NI cDAQ-9172 chassis, refer to the Device Routes tab in MAX. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 77: Clock Routing

    Clock Routing Figure 49 shows the clock routing circuitry of the NI cDAQ-9172 chassis. 80 MHz Timebase Onboard 80 MHz 20 MHz Timebase Oscillator ÷ 100 kHz Timebase ÷ Figure 49. NI cDAQ-9172 Clock Routing Circuitry 80 MHz Timebase You can use the 80 MHz Timebase as the Source input to the 32-bit general-purpose counter/timers.

  • Page 78: Specifications

    Performance dependent on type of installed C Series I/O modules and number of channels in the task. Does not include group delay. Refer to C Series I/O module documentation for more information. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 79: Digital Waveform Characteristics (Slots 1 Through 4 Only)

    AO waveform modes......Non-periodic waveform, periodic waveform regeneration mode from onboard memory, periodic waveform regeneration from host buffer including dynamic update Digital Waveform Characteristics (Slots 1 through 4 Only) Waveform acquisition (DI) FIFO............2,047 samples Waveform generation (DO) FIFO............2,047 samples Digital input sample clock frequency Streaming to application memory..........0 to 8 MHz, system dependent Finite..........0 to 10 MHz...

  • Page 80: General-Purpose Counter/Timers (Slots 5 And 6 Only)

    Routing options for inputs...... Any PFI, analog trigger, many internal signals FIFO ............2 samples Data transfers ......... High-speed data stream, programmed I/O Requires correlated digital I/O modules installed in the appropriate slot(s). © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 81: Frequency Generator (Slots 5 And 6 Only)

    Frequency Generator (Slots 5 and 6 Only) Number of channels........1 Base clocks ..........10 MHz, 100 kHz Divisors...........1 to 16 (integers) Base clock accuracy........50 ppm Output is available on any PFI terminal. External Digital Triggers (Slots 5 and 6 or with Some AI Modules) Source .............Any PFI terminal Polarity............Software-selectable for most signals...

  • Page 82: Bus Interface

    For UL and other safety certifications, refer to the product label or visit ni.com/ , search by model number or product line, and click the appropriate link certification in the Certification column. © National Instruments Corporation NI cDAQ-9172 User Guide and Specifications...

  • Page 83: Environmental

    Environmental The NI cDAQ-9172 chassis is intended for indoor use only. For outdoor use, mount the system in a suitably rated enclosure. Operating temperature (IEC-60068-2-1 and IEC-60068-2-2) ..–20 to 55 °C Storage temperature (IEC-60068-2-1 and IEC-60068-2-2) ..–40 to 85 °C Ingress protection ........IP 30 Operating humidity (IEC-60068-2-56) ........10 to 90% RH, noncondensing...

  • Page 84: Electromagnetic Compatibility

    Waste Electrical and Electronic Equipment (WEEE) EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit ni.com/environment/weee.htm RoHS...

  • Page 85: Where To Go For Support

    Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or ni.com/patents.

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