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USER GUIDE AND SPECIFICATIONS
NI USB-9229/9239
4-Channel, 24-Bit Analog Voltage Input Module
Introduction
This user guide describes how to use the National Instruments
USB-9229/9239 and lists the device specifications. In this document,
the NI USB-9229 and NI USB-9239 are referred to inclusively as the
NI USB-9229/9239.
The NI USB-9229/9239 provides a USB interface for four channels of
24-bit simultaneous analog input with integrated signal conditioning. The
NI USB-9229/9239 consists of two components: an NI 9229/9239 module
and an NI USB-9162 carrier, as shown in Figure 1.
NI 9229/9239
NI USB-9162
Figure 1. NI USB-9229/9239 Components
NI USB-9229/9239
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Summary of Contents for National Instruments NI USB-9229
- Page 1 USER GUIDE AND SPECIFICATIONS NI USB-9229/9239 4-Channel, 24-Bit Analog Voltage Input Module This user guide describes how to use the National Instruments USB-9229/9239 and lists the device specifications. In this document, the NI USB-9229 and NI USB-9239 are referred to inclusively as the NI USB-9229/9239.
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Page 2: Safety Guidelines For Hazardous Voltages
Dimensions Figure 2 shows the NI USB-9229/9239 device dimensions. Hi-Speed USB Carrier NI USB-9162 120.68 mm (4.751 in.) 118.26 mm (4.656 in.) 88.12 mm 25.34 mm (3.469 in.) (0.998 in.) Figure 2. NI USB-9229/9239 Device in Millimeters (Inches) Safety Guidelines Operate the NI USB-9229/9239 only as described in these operating instructions. -
Page 3: Related Documentation
Select Start»All Programs»National Instruments»NI-DAQ»DAQ Getting Started Guide. The NI-DAQ Readme lists which devices are supported by this version of NI-DAQ. Select Start»All Programs»National Instruments»NI-DAQ» NI-DAQ Readme. © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications... - Page 4 The NI-DAQmx Help contains general information about measurement concepts, key NI-DAQmx concepts, and common applications that are applicable to all programming environments. Select Start»All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. LabVIEW If you are a new user, use the Getting Started with LabVIEW manual...
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Page 5: Measurement Studio
Select Start»All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. The NI-DAQmx C Reference Help describes the NI-DAQmx Library functions, which you can use with National Instruments data acquisition devices to develop instrumentation, acquisition, and control applications. Select Start»All Programs»National Instruments»NI-DAQ» NI-DAQmx C Reference Help. -
Page 6: Installing The Software
The installed documentation contains the NI-DAQmx API overview, measurement tasks and concepts, and function reference. This help is fully integrated into the Visual Studio .NET documentation. To view the NI-DAQmx .NET documentation, go to Start»Programs»National Instruments»NI-DAQ»NI-DAQmx .NET Reference Help. Expand NI Measurement Studio Help»NI Measurement Studio .NET Class Library»Reference to view the function reference. -
Page 7: Installing Other Software
The NI-DAQmx CD contains example programs that you can use to get started programming with the NI USB-9229/9239. Refer to the NI-DAQmx for USB Devices Getting Started Guide that shipped with your device, and is also accessible from Start»All Programs»National Instruments» NI-DAQ, for more information. Installing the NI USB-9229/9239 Device Before installing the device, you must install the software you plan to use with the device. - Page 8 USB port on the computer. Refer to the NI-DAQmx for USB Devices Getting Started Guide that shipped with your device, and is also accessible from Start»All Programs»National Instruments» NI-DAQ, for more information. NI USB-9229/9239 User Guide and Specifications...
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Page 9: Led Indicator
Connect the positive signal of the signal source to the AI+ terminal, and connect the negative signal of the signal © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications... -
Page 10: Wiring For High-Vibration Applications
3– AI3– Wiring for High-Vibration Applications If an application is subject to high vibration, National Instruments recommends that you either use ferrules to terminate wires to the detachable screw-terminal connector or use the NI 9971 backshell kit to protect the connections. Refer to Figure 7 for an illustration. - Page 11 The NI USB-9229/9239 analog input channels are floating with respect to earth ground and each other. The incoming analog signal on each channel is conditioned, buffered, and then sampled by a 24-bit Delta-Sigma ADC. © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications...
- Page 12 Each channel provides an independent signal path and ADC, enabling you to sample all four channels simultaneously. Refer to Figure 10 for an illustration of the circuitry for one channel. Overvoltage Protection AI– Amplifier Prefilter NI USB-9229/9239 Figure 10. Input Circuitry for One Channel Understanding NI USB-9229/9239 Filtering The NI USB-9229/9239 uses a combination of analog and digital filtering to provide an accurate representation of in-band signals while rejecting...
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Page 13: Alias-Free Bandwidth
NI USB-9229/9239 is not an aliased artifact of signals at a higher frequency. The alias-free bandwidth is defined by the ability of the filter to reject frequencies above the stopband frequency and equals the data rate minus the stopband frequency. © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications... -
Page 14: Specifications
Specifications The following specifications are typical for the range 0 to 60 °C unless otherwise noted. All voltages are relative to the AI– signal on each channel unless otherwise noted. Input Characteristics Number of channels........4 analog input channels ADC resolution........24 bits Type of ADC ..........Delta-Sigma (with analog prefiltering) Sampling mode ........Simultaneous... - Page 15 (ch-to-ch, 20 kHz) ........0.22 dB max Crosstalk (1 kHz) ........–130 dB Phase mismatch (ch-to-ch) NI USB-9229 ........0.045°/kHz max NI USB-9239 ........0.075°/kHz max Phase mismatch (module-to-module, max) © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications...
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Page 16: Power Requirements
NI USB-9229........0.045°/kHz + 360°· f NI USB-9239........0.075°/kHz + 360°· f Phase nonlinearity (f = 50 kS/s).....0.11° max Input delay μ NI USB-9229........38.4/f + 2.6 μ NI USB-9239........38.4/f Passband Frequency ........0.453 · f Flatness (f = 50 kS/s) ......±100 mdB max Stopband Frequency ........0.547 ·... -
Page 17: Physical Characteristics
This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 © National Instruments Corporation NI USB-9229/9239 User Guide and Specifications... -
Page 18: Hazardous Locations
For UL and other safety certifications, refer to the product label or visit Note ni.com/ , search for the module number or product line, and click the appropriate certification link in the Certification column. Hazardous Locations The NI USB-9229/9239 is not certified for use in hazardous locations. Environmental The NI USB-9229/9239 devices are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. -
Page 19: Environmental Management
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 20: 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 CD, or ni.com/patents.
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