National Instruments BNC-2140 - Manuals

© National Instruments Corporation vii BNC-2140 User Manual About This Manual This manual describes the electrical and mechanical aspects of the BNC-2140 accessory and contains information concerning its operation. Organization of This Manual The BNC-2140 User Manual is organized as follows: • Chapt...

About This Manual BNC-2140 User Manual viii © National Instruments Corporation Conventions Used in This Manual The following conventions are used in this manual: < > Angle brackets containing numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for ...

© National Instruments Corporation 1-1 BNC-2140 User Manual 1 Introduction This chapter describes the BNC-2140 accessory, lists what you need to get started, explains how to unpack your BNC-2140, and describes optional equipment. Thank you for buying the BNC-2140 accessory for DSA.The BNC-2140 is a ...

Chapter 1 Introduction BNC-2140 User Manual 1-2 © National Instruments Corporation What You Need to Get Started To set up and use your BNC-2140 device, you will need the following: ❑ BNC-2140 ❑ One of the following DSA devices: PCI-4451PCI-4452NI 4551NI 4552 ❑ BNC-2140 User Manual ❑ Your computer ❑ ...

Chapter 1 Introduction © National Instruments Corporation 1-3 BNC-2140 User Manual If your application requires that you use a prepolarized microphone with a microphone preamplifier, contact Brüel and Kjær. Custom Cabling National Instruments offers cables of different lengths for the BNC-2140 acces...

© National Instruments Corporation 2-1 BNC-2140 User Manual 2 Installation and Configuration This chapter explains how to install and configure your BNC-2140 accessory. Installation Note You must turn the power off to your computer before installing the BNC-2140. The following are general installati...

Chapter 3 Signal Connections © National Instruments Corporation 3-5 BNC-2140 User Manual The outer shell of the BNC connectors is not GND (0 V). The outer shell of the BNC is not physically connected to the metal box of the BNC-2140. The outer shell is either the inverting differential signal in DIF...

© National Instruments Corporation 4-1 BNC-2140 User Manual 4 Theory of Operation This chapter contains a functional overview of the BNC-2140. UM.book Page 1 Tuesday, July 14, 1998 10:37 AM

Chapter 4 Theory of Operation BNC-2140 User Manual 4-2 © National Instruments Corporation Functional Overview Figure 4-1 is a block diagram of the BNC-2140. Figure 4-1. BNC-2140 Block Diagram 0 +5 V +30 V ICP CH0 Isolated Power Supply ICP Current Source 0 ICP Enable on/off AICH0BNCConnector DIFF/SE ...

Chapter 4 Theory of Operation © National Instruments Corporation 4-3 BNC-2140 User Manual Analog Input Circuitry The BNC-2140 has four identical analog input channels. A principal function of the BNC-2140 is to supply a constant current for ICP type accelerometers and microphone preamplifiers. Many ...

Chapter 4 Theory of Operation BNC-2140 User Manual 4-4 © National Instruments Corporation Analog Output The BNC-2140 has two analog output channels. The BNC-2140 can also select between DIFF and SE outputs. In DIFF mode, one line connects to the positive output of the channel and the other connects ...

© National Instruments Corporation A-1 BNC-2140 User Manual A Specifications This appendix lists the specifications of the BNC-2140 accessory. All specifications are typical at 25° C unless otherwise noted. All specifications are relative to measurement standards and require a 15 minute warm-up peri...

Appendix A Specifications BNC-2140 User Manual A-2 © National Instruments Corporation Temperature coefficient ..........................±141 ppm/° C Voltage compliance ................................24 V Excitation overvoltage protection ...........±42.4 V (30 V rms ) powered on or off Analog Outpu...

© National Instruments Corporation B-1 BNC-2140 User Manual B 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 conta...

BNC-2140 User Manual B-2 © National Instruments Corporation Fax-on-Demand Support Fax-on-Demand is a 24-hour information retrieval system containing a library of documents on a wide range of technical information. You can access Fax-on-Demand from a touch-tone telephone at 512 418 1111. E-Mail Suppo...

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 ...

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: BNC-2140 User Manual Edition Date: June 1998 Part Number: 321933B-01 Please comment on the complete...

© National Instruments Corporation I-1 BNC-2140 User Manual Index Numbers +5 V signal, 68-pin connector signal descriptions (table), 3-4 A +ACH<0..3> signal 68-pin connector signal descriptions (table), 3-4 analog connector (table), 3-1analog input signal connections, 3-5 –ACH<0..3> sign...