National Instruments SC-2040

Configuration and Installation Chapter 2

SC-2040 User Manual 2-4 © National Instruments Corporation

Table 2-2. Shield Selection

Jumper Description Configuration

W1 SHLD OFF position—Place

the jumper in this position to

keep the SC-2040 analog

ground isolated from the metal

standoffs in the corners of the

board (factory setting).

SHLD OFF

SHLD ON

SHLD ON position—Place

the jumper in this position to

connect the SC-2040 analog

ground to the metal standoffs

or to a rack-mount kit, which

may provide shielding for the

SC-2040.

SHLD OFF

SHLD ON

Table 2-3. DAQ Board Ground Isolation Selection

Jumper Description Configuration

W10 AIGND-AIGND position—

Use this setting if you are

using a MIO-16E DAQ board.

Place the jumper in this

position to keep the SC-2040

digital ground and analog

grounds isolated (factory

setting).

DGND

AIGND

W10

AIGND

AIGND-DGND position—

Place the jumper in this

position to connect the

SC-2040 analog ground to

digital ground.

DGNDAIGND

W10

AIGND

Contents

Main Page Limited Warranty Copyright Trademarks Page Contents Chapter 1 Introduction Chapter 2 Configuration and Installation Chapter 3 Signal Connections Page Figures Tables About This Manual Organization of This Manual Conventions Used in This Manual The National Instruments Documentation Set Page Chapter 1 Introduction About the SC-2040 What You Need to Get Started Software Programming Choices LabVIEW and LabWindows Application Software NI-DAQ Driver Software Page Register-Level Programming Optional Equipment Unpacking Page Page Page Page Page Supplementary Configuration Information Gain Selection Input Mode Selection Installation Power-on Sequence Chapter 3 Signal Connections I/O Connector Pin Description Signal Connections Chapter 3 SC-2040 User Manual 3-2 National Instruments Corporation A. Breakout Connector J11 B. I/O Connector J12 Table 3-1. Pin Assignments for Connectors J11 and J12 Signal Connection Description Table 3-2. Input Connectors Signal Summary (continues) Table 3-3. Output Connectors (J11 and J12) Signal Summary Page Signal Connections Chapter 3 Figure 3-2. SC-2040 Signal Routing SC-2040 User Manual 3-6 National Instruments Corporation Analog Signal Inputs Page Chapter 3 Signal Connections National Instruments Corporation 3-9 SC-2040 User Manual Figures 3-5 through 3-7 illustrate how to connect AC-coupled signals. Analog Figure 3-6. Ground-Offset AC-Coupled Signal Connection GND V () Digital Signal Inputs Monitoring Signal Outputs Other Connection Considerations Page Theory of Operation Chapter 4 Figure 4-1. SC-2040 Block Diagram SC-2040 User Manual 4-2 National Instruments Corporation Analog Circuitry Input Protection Amplification Track-and-Hold (T/H) Circuitry Page Page Page Chapter 5 Calibration Procedures Software Calibration Offset Adjustment Gain Adjustment Linearity Adjustment Hardware Calibration Page Page Appendix A Specifications Analog Input Input Characteristics Transfer Characteristics Amplifier Characteristics Dynamic Characteristics S/H Characteristics Stability Power Requirement Physical Environment Appendix B Customer Communication Technical Support Form SC-2040 Hardware and Software Configuration Form National Instruments Products Other Products Documentation Comment Form Glossary ___________________________________________________ Page Index Numbers/Symbols A B C D E F G H J L M O P T U