National Instruments SCXI-1503 - page 11

Chapter 1 About the SCXI-1503

© National Instruments Corporation 1-3 SCXI-1503 User Manual

• SCXI or PXI/SCXI chassis manual—Read this manual for

maintenance information on the chassis and for installation

instructions.

• The DAQ Getting Started Guide—This document has information on

installing NI-DAQ and the E/MSeries DAQ device. Install these

before you install the SCXI module.

• The SCXI hardware user manuals—Read these manuals fordetailed

information about signal connections and module configuration. They

also explain, in greater detail, how the module works and contain

application hints.

• Accessory installation guides or manuals—Read the terminal block

and cable assembly installation guides. They explain how to physically

connect the relevant pieces ofthe system. Consult these guides when

you are making the connections.

• The E/MSeries DAQ device documentation—This documentation has

detailed information about the DAQ device that plugs into or is

connected to the computer. Use this documentation for hardware

installation and configuration instructions, specification information

about the DAQ device, and application hints.

• Software documentation—You may have both application software

and NI-DAQ software documentation. National Instruments (NI)

application software includes LabVIEW, LabWindows/CVI, and

Measurement Studio. After you set up the hardware system, use either

your application software documentation or the NI-DAQ

documentation to help you write your application. If you have a large,

complex system, it is worthwhile to look through the software

documentation before you configure the hardware.

• One or more of the following help files for software information:

–Start»Programs»National Instruments»NI-DAQ»

NI-DAQmx Help

–Start»Programs»National Instruments»NI-DAQ»

Traditional NI-DAQ User Manual

–Start»Programs»National Instruments»NI-DAQ»

TraditionalNI-DAQ Function Reference Help

You can download NI documents from ni.com/manuals. To download

the latest version of NI-DAQ, click Drivers and Updates atni.com.

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Conventions Contents Chapter 1 About the SCXI-1503 Chapter 2 Connecting Signals Chapter 3 Configuring and Testing Chapter 4 Theory of Operation Chapter 5 Using the SCXI-1503 Page Tables About the SCXI-1503 What You Need to Get Started National Instruments Documentation Page Installing Application Software, NI-DAQ, and the E/M Series DAQ Device Installing the SCXI-1503 Module into the SCXI Chassis Installing the Terminal Block Configuring the SCXI System Software Page Connecting Signals Analog Input Signal Connections Ground-Referencing the Signals Connecting Resistive Devices to the SCXI-1503 4-Wire Configuration 2-Wire Configuration 3-Wire Resistive Sensor Configuration Lead-Resistance Compensation Using a 3-Wire Resistive Sensor and Two Matched Current Sources Figure 2-4. 3-Wire Configuration Using Matched Current Sources Front Connector Table 2-1. Front Signal Pin Assignments Page Rear Signal Connector Table 2-3 shows the SCXI-1503 module rear signal connector pin assignments. Table 2-3. Rear Signal Pin Assignments Rear Signal Connector Descriptions Page Configuring and Testing SCXI-1503 Software-Configurable Settings Common Software-Configurable Settings Gain/Input Range Input Coupling Configurable Settings in MAX NI-DAQmx Creating a Global Channel or Task Verifying the Signal Verifying the Signal in NI-DAQmx Using a Task or Global Channel Page Page Chapter 4 Theory of Operation Figure 4-1. Block Diagram of SCXI-1503 SCXI-1503 User Manual 4-2 ni.com Front Signal Connector Rear Signal Connector + Rear Signal Connector, SCXIbus Connector, and SCXIbus Interface Digital Control Circuitry Analog Circuitry Analog Input Channels Operation of the Current Sources Theory of Multiplexed Operation Measuring Temperature with Resistive Transducers RTDs RTD Measurement Errors The Relationship Between Resistance and Temperature in RTDs Page Page Page Thermistors Thermistor Measurement Circuits Resistance/Temperature Characteristic of Thermistors Page Using the SCXI-1503 Developing Your Application in NI-DAQmx Typical Program Flowchart Figure 5-1. Typical Program Flowchart for Voltage Measurement Channels General Discussion of Typical Flowchart Creating a Task Using DAQ Assistant or Programmatically Adjusting Timing and Triggering Configuring Channel Properties Page Page Acquiring, Analyzing, and Presenting Completing the Application Developing an Application Using LabVIEW Page Using a NI-DAQmx Channel Property Node in LabVIEW Specifying Channel Strings in NI-DAQmx Text Based ADEs LabWindows/CVI Measurement Studio (Visual Basic 6, .NET, and C#) Programmable NI-DAQmx Properties Calibration Internal/Self-Calibration External Calibration Page A Specifications Analog Input Input Characteristics Transfer Characteristics RTD Measurement Accuracy Amplifier Characteristics Dynamic Characteristics Filter Stability Excitation Power Requirements From SCXI Backplane Environmental Physical Maximum Working Voltage Safety Electromagnetic Compatibility CE Compliance Waste Electrical and Electronic Equipment (WEEE) B Removing the SCXI-1503 Removing the SCXI-1503 from MAX Removing the SCXI-1503 from a Chassis Figure B-1. Removing the SCXI-1503 C Common Questions Page Page Glossary Numbers/Symbols A B C D E G I J L M N O P R S T U V W Index Numerics A C D E F G I O P Q R S T V