National Instruments NI 5911 Hardware Overview

National Instruments Corporation 2-1 NI 5911 User Manual

Hardware Overview

This chapter includes an overview of the NI 5911, explains the operation of

each functional unit making up your NI 5911, and describes the signal

connections. Figure 2-1 shows a block diagram of the NI 5911.

Figure 2-1. NI 5911 Block Diagram

Protect/

Calibration

Mux

Calibration

Generator

PGA

Noise

Shaper

Reference

Clock

Data

A/D Converter

100 MHz, 8-bit

Digital Signal

Processor

Digital IO

Connector

1 kOhm

Analog Input

Connector AC/DC Coupling

1 MOhm

Capture

Memory

Timing IO/

Memory Control

CBIHWum.book Page 1 Thursday, October 29, 1998 1:56 PM

Contents

Main Page Important Information Warranty Copyright Trademarks WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS Conventions ! Contents Chapter 1 Taking Measurements with the NI 5911 Chapter 2 Hardware Overview Page Taking Measurements with the NI 5911 Connecting Signals Introduction to the VirtualBench-Scope Soft Front Panel Soft Front Panel Features Page Using the VirtualBench-SCOPE Soft Front Panel Acquiring Data Page National Instruments Corporation 2-1 NI 5911 User Manual Hardware Overview Figure 2-1. NI 5911 Block Diagram Measurement Fundamentals Differential Input Grounding Considerations Input Ranges Input Impedance Input Bias Input Protection AC Coupling Measurement Modes Oscilloscope Mode Flexible Resolution Mode Acquisition System Calibration Internal Calibration External Calibration Triggering and Arming Analog Trigger Circuit Page Trigger Hold-Off Memory Multiple Record Errors During Acquisition RTSI Bus Trigger and Clock Lines PFI Lines PFI Lines as Inputs PFI Lines as Outputs Synchronization A Specifications NI 5911 Acquisition System Page Acquisition Characteristics Accuracy Common-Mode Characteristics Filtering Dynamic Range Noise (excluding input-referred noise) Distortion Timebase System Triggering Systems Acquisition Modes Power Requirements Physical Operating Environment Storage Environment EMC Compliance Calibration Digitizer Basics Understanding Digitizers Nyquist Theorem Analog Bandwidth Sample Rate Vertical Sensitivity ADC Resolution Record Length Triggering Options Making Accurate Measurements Appendix B Digitizer Basics National Instruments Corporation B-5 NI 5911 User Manual Figure B-5. Dynamic Range of an 8-Bit ADC with Three Different Gain Settings Page Page C Customer Communication Electronic Services Bulletin Board Support FTP Support Fax-on-Demand Support Telephone and Fax Support Country Telephone Fax Technical Support Form NI 5911 Hardware and Software Configuration Form National Instruments Products Other Products Documentation Comment Form Title: Edition Date: Part Number: Mail to: Technical Publications Fax to: Technical Publications Glossary Numbers/Symbols A B C D E F G H I M N O P R S T V W Index A B C D E F G H I M N O P R S T V