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Summary of Contents for National Instruments DAQ Series
- Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
- Page 2 BNC-2140 User Manual Dynamic Signal Acquisition Signal Conditioning Accessory BNC-2140 User Manual June 2003 Edition Part Number 321933D-01 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 3 For further support information, refer to the Technical Support and Professional Services appendix. To comment on the documentation, send email to techpubs@ni.com. © 1998–2003 National Instruments Corporation. All rights reserved. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 4 The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.
- Page 5 These classes are known as Class A (for use in industrial-commercial locations only) or Class B (for use in residential or commercial locations). All National Instruments (NI) products are FCC Class A products. Depending on where it is operated, this Class A product could be subject to restrictions in the FCC rules. (In Canada, the Department of Communications (DOC), of Industry Canada, regulates wireless interference in much the same way.) Digital...
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Page 6: Table Of Contents
Theory of Operation Functional Overview......................4-1 Analog Input Circuitry....................4-2 Analog Output........................4-2 Appendix A Specifications Appendix B Technical Support and Professional Services © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 7 Contents Glossary Index BNC-2140 User Manual ni.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 8: About This Manual
Related Documentation The following documents contain information you may find helpful: • National Instruments Application Note 025, Field Wiring and Noise Considerations for Analog Signals • NI 4551/4552 User Manual •... -
Page 9: Introduction
The BNC-2140 is a signal conditioning accessory specifically designed for use with a dynamic signal acquisition (DSA) device. It interfaces four BNC signal inputs and two BNC signal outputs directly to National Instruments DSA products including the NI PCI-4451, NI PCI-4452, NI PCI-4551, and NI PCI-4552. -
Page 10: What You Need To Get Started
Never touch exposed connector pins. Remove the device from the package and inspect the device for loose components or any other sign of damage. Notify National Instruments if the device appears damaged in any way. Do not install a damaged device onto your computer. -
Page 11: Optional Equipment
If your application requires that you use a prepolarized microphone with a microphone preamplifier, contact Brüel and Kjær or go to bksv.com © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 12: Installation And Configuration
This chapter explains how to install and configure the BNC-2140. Installation Note You must power off the computer and install your National Instruments DSA device before installing the BNC-2140. Refer to your DSA device documentation for instructions. Perform the following steps to install the BNC-2140: Insert either end of the SHC68-C68-A1 analog cable into the 68-pin connector on the BNC-2140. - Page 13 Chapter 2 Installation and Configuration Note You can connect or disconnect BNC cables carrying signals without powering off the computer. IEPE POWER Connector Accessory AI 0 AI 2 IEPE POWER IEPE POWER IEPE POWER AI 1 AI 3 IEPE POWER IEPE POWER AO 0 AO 1...
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Page 14: Signal Connections
BNC shell. In SE mode, the inverting (negative) terminal is connected to ground through a 50 Ω resistor. © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 15 Chapter 3 Signal Connections Table 3-1. BNC Analog I/O Connector Signal Descriptions (Continued) Signal Name Reference Direction Description +AO 1 –AO 1 Output +Analog Output Channel 1—This pin supplies the analog non-inverting output channel 1. This signal passes through the internal BNC conductor. –AO 1 +AO 1 Output...
- Page 16 These AI GND and AO GND pins are not connected in the SHC68-C68-A1 cable. Figure 3-1. BNC-2140 External 68-Pin Analog Connector © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 17 BNC-2140 accessory can damage the BNC-2140, any device connected to it, and the host computer. Maximum input ratings for each signal are listed in Appendix A, Specifications. National Instruments is not liable for any damage resulting from signal connections exceeding maximum ratings.
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Page 18: Analog Input Signal Connections
BNC-2140, the DSA plug-in device, and the computer. National Instruments is not responsible for any damage resulting from connections that exceed this rating. © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 19: Theory Of Operation
AO 1 – 50 Ω AO GND DIFF/SE +5 V +5 V IEPE Power D GND On/Off Figure 4-1. BNC-2140 Block Diagram © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 20: Analog Input Circuitry
Chapter 4 Theory of Operation Analog Input Circuitry The BNC-2140 has four identical analog input channels. The BNC-2140 supplies a constant current for IEPE accelerometers and microphone preamplifiers. Many accelerometers use piezoelectric materials to generate a charge proportional to the acceleration applied. These types of accelerometers are susceptible to external noise. -
Page 21: Appendix A Specifications
(30 V ) powered on or off Includes the effects of the BNC-2140 with a 1 m SHC68-C68-A1 analog cable. © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 22 Appendix A Specifications Analog Output Number of channels........2 Maximum voltage (SE mode)....±7.07 V (5 V between AO GND and –AO x Output coupling ........DC Power Requirement (from DSA device) Power consumption ........400 mA at +5 VDC Physical Dimensions ..........14.4 by 11.2 by 5.5 cm (5.7 by 4.4 by 2.2 in.) I/O connectors I/O signals........6 BNC connectors (outer shell...
- Page 23 Select the appropriate product family, followed by your product, and a link to the DoC appears in Adobe Acrobat format. Click the Acrobat icon to download or read the DoC. © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 24 Technical Support and Professional Services Visit the following sections of the National Instruments Web site at for technical support and professional services: ni.com • Support—Online technical support resources include the following: – Self-Help Resources—For immediate answers and solutions, visit our extensive library of technical support resources available in English, Japanese, and Spanish at .
- Page 25 Appendix B Technical Support and Professional Services • Calibration Certificate—If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration If you searched and could not find the answers you need, contact ni.com your local office or NI corporate headquarters. Phone numbers for our worldwide offices are listed at the front of this manual.
- Page 26 AO 0 analog output channel 0 signal © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 27 Glossary AO 1 analog output channel 1 signal AO GND analog output ground bias a DC signal added to the original signal a type of coaxial signal connector Celsius channel pin or wire lead to which you apply or from which you read the analog or digital signal;...
- Page 28 © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 29 Glossary input/output—the transfer of data to/from a computer system involving communications channels, operator interface devices, and/or data acquisition and control interfaces IEPE Integral Electronic Piezoelectric, also known as integrated circuit piezoelectric—identifies products that operate using a constant current source and return the output signal in the form of voltage modulation on the same line as the constant current source inches Light Emitting Diode, a semiconductor light source...
- Page 30 (heat, light, sound, pressure, motion, flow, and so on), and produces a corresponding electrical signal volts volts direct current volts © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 31 2-1 analog output signal connections, 3-5 switch settings and signal connections (figure), 2-2 contacting National Instruments, B-2 current excitation specifications, A-1 © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 32 Index customer education, B-1 help professional services, B-1 professional services, B-1 technical support, B-1 technical support, B-1 D GND signal, 68-pin connector signal I/O connectors, 3-1 descriptions (table), 3-4 68-pin connector signal descriptions Declaration of Conformity, B-1 (table), 3-4 diagnostic resources, B-1 analog connector signal descriptions DIFF configuration (table), 3-1...
- Page 33 B-1 analog input signal connections, 3-5 troubleshooting resources, B-1 analog output, 4-2 analog output signal connections, 3-5 setting, 2-1 © National Instruments Corporation BNC-2140 User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 34 Index unpacking the BNC-2140, 1-2 professional services, B-1 technical support, B-1 worldwide technical support, B-2 voltage input specifications, A-1 BNC-2140 User Manual ni.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 35 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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