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USER GUIDE AND SPECIFICATIONS
NI USB-9233
4-Channel, ±5 V, 24-Bit IEPE Analog Input Device
Introduction
This user guide describes how to use the National Instruments USB-9233
and lists the device specifications.
The NI USB-9233 data acquisition device provides a USB interface for
four channels of 24-bit analog inputs with integrated signal conditioning.
The NI USB-9233 consists of two components: an NI 9233 module and an
NI USB-9162 carrier, as shown in Figure 1.
NI 9233
NI USB-9162
Figure 1. NI USB-9233 Components
NI USB-9233
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Table of Contents
Related Manuals for National Instruments USB-9233
Summary of Contents for National Instruments USB-9233
- Page 1 The NI USB-9233 data acquisition device provides a USB interface for four channels of 24-bit analog inputs with integrated signal conditioning. The NI USB-9233 consists of two components: an NI 9233 module and an NI USB-9162 carrier, as shown in Figure 1.
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Page 2: Safety Guidelines
Operate the NI USB-9233 only as described in these operating instructions. Note Although the NI 9233 module may have more stringent certification standards than the NI USB-9233, when used with the USB-9162 carrier, the combined system may be limited. Refer to the Specifications section for more details. -
Page 3: Related Documentation
NI-DAQmx measurement in LabVIEW using the DAQ Assistant. • VI and Function Reference»Measurement I/O VIs and Functions—Describes the LabVIEW NI-DAQmx VIs and properties. © National Instruments Corporation NI USB-9233 User Guide and Specifications... -
Page 4: Measurement Studio
In Visual Studio .NET, select File»New»Project to launch the New Project dialog box. Find the Measurement Studio folder for the language you want to create a program in. Choose a project type. You add DAQ tasks as a part of this step. NI USB-9233 User Guide and Specifications ni.com... -
Page 5: Ansi C Without Ni Application Software
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
Example Programs The NI-DAQmx CD contains example programs that you can use to get started programming with the NI USB-9233. 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»... - Page 7 Press firmly on the connector side of the NI 9233 module until the latches lock the module into place, as shown in Figure 4. Figure 4. Locking Module into Place © National Instruments Corporation NI USB-9233 User Guide and Specifications...
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Page 8: Mounting The Ni Usb-9233 To A Panel
Figure 5. Module Dimensions in Millimeters (Inches) Connecting the NI USB-9233 to a Computer Plug one end of the USB cable into the NI USB-9233 and the other end into an available 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,... -
Page 9: Wiring The Ni Usb-9233 Device
Device error. Refer to ni.com/support Wiring the NI USB-9233 Device The NI USB-9233 has four BNC connectors that provide connections for four simultaneously-sampled analog input channels. Each channel has a BNC connector to which you can connect an integrated electronic piezoelectric (IEPE) sensor. -
Page 10: Connecting Iepe Sensors To The Ni Usb-9233
If you make a ground-referenced connection between the IEPE sensor and the NI USB-9233, make sure the voltage on the AI– shell is in the common-mode range to ensure proper operation of the NI USB-9233. The AI– shell is protected against accidental contact with overvoltages within the overvoltage protection range. -
Page 11: Ni Usb-9233 Circuitry
NI USB-9233 Circuitry The NI USB-9233 analog input channels are referenced to chassis ground through a 50 Ω resistor. Because the chassis ground for the NI USB-9233 is provided through the USB cable, the grounding of the host computer can affect your measurement. - Page 12 The signals within the passband have frequency-dependent gain or attenuation. The small amount of variation in gain with frequency is called the passband ripple. The digital filters of the NI USB-9233 adjust the frequency range of the passband to match the data rate. Therefore, the amount of gain or attenuation at a given frequency depends on the data rate.
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Page 13: Alias-Free Bandwidth
Alias-Free Bandwidth Any signal that appears in the alias-free bandwidth of the NI USB-9233 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. -
Page 14: Specifications
Accuracy..........±100 ppm max Input coupling.........AC AC cutoff frequency –3 dB ..........0.5 Hz typ –0.1 dB ..........4.2 Hz max Full performance requires the use of a USB 2.0 Hi-Speed host controller and USB 2.0 hubs. NI USB-9233 User Guide and Specifications ni.com... - Page 15 NI USB-9233, is the bias voltage of the accelerometer, and bias is the full-scale voltage of the accelerometer. full-scale © National Instruments Corporation NI USB-9233 User Guide and Specifications...
- Page 16 · f Stopband Oversample Alias-Free Freq Attenuation Rate Bandwidth ≤25 kS/s 0.58 95 dB 0.42 · f · f · f >25 kS/s 0.68 92 dB 0.32 · f · f · f NI USB-9233 User Guide and Specifications ni.com...
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Page 17: Power Requirements
CCIF 11 kHz/12 kHz 1:1 amplitude ratio....–93 dB Power Requirements Current consumption from USB .... 500 mA, max Suspend mode ......... 2.5 mA, max Bus Interface USB specification ........USB 2.0 Hi-Speed © National Instruments Corporation NI USB-9233 User Guide and Specifications... -
Page 18: Physical Characteristics
Connect only voltages that are within these limits. Channel-to-earth ground......±30 V max Isolation Channel-to-channel......None Channel-to-earth ground....None Safety Standards The NI USB-9233 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 •... -
Page 19: Electromagnetic Compatibility
Refer to the Declaration of Conformity (DoC) for this product for any additional regulatory compliance information. To obtain the DoC for this product, visit , search by model number or product line, and click the ni.com/certification appropriate link in the Certification column. © National Instruments Corporation NI USB-9233 User Guide and Specifications... -
Page 20: Environmental Management
National Instruments (RoHS) National Instruments RoHS ni.com/environment/rohs_china (For information about China RoHS compliance, go to ni.com/environment/rohs_china Calibration You can obtain the calibration certificate for the NI USB-9233 at ni.com/calibration Calibration interval ........1 year NI USB-9233 User Guide and Specifications ni.com... -
Page 21: 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.