Page 3 - Important Information; Warranty; Patents; WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
Important Information Warranty The SCXI-1503 is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defectiv...
Page 4 - Conventions; File»Page Setup»Options; bold
Conventions The following conventions are used in this manual: < > Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for example, P0.<3..0>. » The » symbol leads you through nested menu items and dialog box optio...
Page 5 - Contents
© National Instruments Corporation v SCXI-1503 User Manual Contents Chapter 1About the SCXI-1503 What You Need to Get Started ...................................................................................... 1-1National Instruments Documentation ....................................................
Page 7 - Glossary
Contents © National Instruments Corporation vii SCXI-1503 User Manual Appendix ASpecifications Appendix BRemoving the SCXI-1503 Appendix CCommon Questions Glossary Index Figures Figure 2-1. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration ........... 2-3 Figure 2-2. 2-Wire Resistive Senso...
Page 8 - Tables
Contents SCXI-1503 User Manual viii ni.com Tables Table 1-1. Supported SCXI-1503 Terminal Blocks ............................................... 1-4 Table 2-1. Front Signal Pin Assignments .............................................................. 2-8 Table 2-2. Signal Descriptions ................
Page 9 - What You Need to Get Started
© National Instruments Corporation 1-1 SCXI-1503 User Manual 1 About the SCXI-1503 This manual describes the electrical and mechanical aspects of the SCXI-1503 module and contains information concerning its installation and operation. The SCXI-1503 module provides 16 differential input channels and ...
Page 10 - National Instruments Documentation
Chapter 1 About the SCXI-1503 SCXI-1503 User Manual 1-2 ni.com – One of the following: • SCXI-1600 • E/M Series DAQ device – Computer – Cabling, cable adapter, and sensors as required for your application ❑ Software – NI-DAQ 8.1 or later – Application software, such as LabVIEW, LabWindows ™ /CVI ™ ,...
Page 11 - Drivers and Updates
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-...
Page 12 - Installing the SCXI-1503 Module into the SCXI Chassis; Installing the Terminal Block; Configuring the SCXI System Software; Terminal Block
Chapter 1 About the SCXI-1503 SCXI-1503 User Manual 1-4 ni.com Installing Application Software, NI-DAQ, and the E/M Series DAQ Device Refer to the DAQ Getting Started Guide packaged with the NI-DAQ software to install your application software, NI-DAQ driver software, and the DAQ device to which you...
Page 13 - Verifying the SCXI-1503 Installation
Chapter 1 About the SCXI-1503 © National Instruments Corporation 1-5 SCXI-1503 User Manual Verifying the SCXI-1503 Installation Refer to the SCXI Quick Start Guide , for details about testing the SCXI chassis and module installation in software. Refer to Chapter 3, Configuring and Testing , for deta...
Page 14 - Connecting Signals; Analog Input Signal Connections
© National Instruments Corporation 2-1 SCXI-1503 User Manual 2 Connecting Signals This chapter describes the input and output signal connections to the SCXI-1503 module with the module front connector and rear signal connector. This chapter also includes connection instructions for the signals on th...
Page 15 - Ground-Referencing the Signals; Connecting Resistive Devices to the SCXI-1503
Chapter 2 Connecting Signals SCXI-1503 User Manual 2-2 ni.com Note Exceeding the differential or common-mode input channel ranges results in a distorted signal measurement, and can also increase the settling time requirement of the connected E/M Series DAQ device. Ground-Referencing the Signals Do n...
Page 22 - Pin
Chapter 2 Connecting Signals © National Instruments Corporation 2-9 SCXI-1503 User Manual Table 2-2. Signal Descriptions Pin Signal Name Description A1 +5 V +5 VDC Source—Used to power circuitry on the terminal block. 0.1 mA of source not protected. A13 – A16,A29 – A32 GND Ground—Tied to the SCXI mo...
Page 23 - Rear Signal Connector
Chapter 2 Connecting Signals SCXI-1503 User Manual 2-10 ni.com Rear Signal Connector Table 2-3 shows the SCXI-1503 module rear signal connector pin assignments. Table 2-3. Rear Signal Pin Assignments Rear Connector Diagram Signal Name Pin Number Pin Number Signal Name AI GND 1 2 AI GND AI 0 + 3 4 AI...
Page 24 - Rear Signal Connector Descriptions
Chapter 2 Connecting Signals © National Instruments Corporation 2-11 SCXI-1503 User Manual Rear Signal Connector Descriptions The rear signal connector on the cabled module is the interface between the DAQ device and all modules in the SCXI chassis. AI 0 is used to differentially multiplex all 16 ch...
Page 26 - Configuring and Testing; Common Software-Configurable Settings
© National Instruments Corporation 3-1 SCXI-1503 User Manual 3 Configuring and Testing This chapter discusses configuring the SCXI-1503 in MAX using NI-DAQmx, creating and testing a virtual channel, global channel, and/or task. Notes You must have NI-DAQmx 8.1 or later installed. Refer to the SCXI Q...
Page 27 - Input Coupling; Configurable Settings in MAX
Chapter 3 Configuring and Testing SCXI-1503 User Manual 3-2 ni.com Input Coupling The front end of the SCXI-1503 includes a software configurable switch that allows you to programmatically connect the input channels of the SCXI-1503 to either the front connector or internal ground. When using autoze...
Page 28 - Creating a Global Channel or Task
Chapter 3 Configuring and Testing © National Instruments Corporation 3-3 SCXI-1503 User Manual NI-DAQmx Using NI-DAQmx, you can configure software settings such as sensor type and gain/input signal range in the following ways: • Task or global channel in MAX • Functions in your application Note All ...
Page 29 - Verifying the Signal; Verifying the Signal in NI-DAQmx Using a Task or Global Channel
Chapter 3 Configuring and Testing SCXI-1503 User Manual 3-4 ni.com selecting channels. If you are creating a channel, you can only select one channel. Click Next . 7. Name the task or channel and click Finish . 8. Select the channel(s) you want to configure. You can select a range of channels by hol...
Page 30 - Test; Start; Stop
Chapter 3 Configuring and Testing © National Instruments Corporation 3-5 SCXI-1503 User Manual 6. Click the Test button. 7. Click the Start button. 8. After you have completed verifying the channels, click the Stop button. You have now verified the SCXI-1503 configuration and signal connection. Note...
Page 31 - Theory of Operation
© National Instruments Corporation 4-1 SCXI-1503 User Manual 4 Theory of Operation This chapter provides a brief overview and a detailed discussion of the circuit features of the SCXI-1503 module. Refer to Figure 4-1 while reading this section.
Page 33 - Digital Control Circuitry; Analog Input Channels
Chapter 4 Theory of Operation © National Instruments Corporation 4-3 SCXI-1503 User Manual The major components of the SCXI-1503 modules are as follows: • Rear signal connector • SCXIbus connector • SCXIbus interface • Digital control circuitry • Analog circuitry The SCXI-1503 modules consist of 16 ...
Page 34 - Operation of the Current Sources; Theory of Multiplexed Operation
Chapter 4 Theory of Operation SCXI-1503 User Manual 4-4 ni.com The CJ SENSOR input channel is used to read the sensor temperature from the terminal block. The temperature sensor is for cold-junction compensation of thermocouple measurements. The CJ SENSOR channel also passes through a 5 Hz lowpass f...
Page 35 - Measuring Temperature with Resistive Transducers; RTDs
Chapter 4 Theory of Operation © National Instruments Corporation 4-5 SCXI-1503 User Manual The module includes first-in first-out (FIFO) memory for storing the channel scan list defined in your application code. NI-DAQ drivers load the FIFO based on the channel assignments you make in your applicati...
Page 36 - RTD Measurement Errors
Chapter 4 Theory of Operation SCXI-1503 User Manual 4-6 ni.com changes in resistance, you must use special configurations that minimize measured errors caused by lead-wire resistance. RTD Measurement Errors Because the RTD is a resistive device, you must pass a current through the device and monitor...
Page 40 - Thermistors
Chapter 4 Theory of Operation SCXI-1503 User Manual 4-10 ni.com Thermistors A thermistor is a piece of semiconductor made from metal oxides, pressed into a small bead, disk, wafer, or other shape, sintered at high temperatures, and finally coated with epoxy or glass. The resulting device exhibits an...
Page 41 - Thermistor Measurement Circuits
Chapter 4 Theory of Operation © National Instruments Corporation 4-11 SCXI-1503 User Manual Figure 4-4. Resistance-Temperature Curve for a 2,252 Ω Thermistor The thermistor has been used primarily for high-resolution measurements over limited temperature ranges. However, continuing improvements in t...
Page 44 - Developing Your Application in NI-DAQmx; Typical Program Flowchart
© National Instruments Corporation 5-1 SCXI-1503 User Manual 5 Using the SCXI-1503 This chapter makes suggestions for developing your application and provides basic information regarding calibration. Developing Your Application in NI-DAQmx Note If you are not using an NI ADE, using an NI ADE prior t...
Page 46 - General Discussion of Typical Flowchart
Chapter 5 Using the SCXI-1503 © National Instruments Corporation 5-3 SCXI-1503 User Manual General Discussion of Typical Flowchart The following sections briefly discuss some considerations for a few of the steps in Figure 5-1. These sections are meant to give an overview of some of the options and ...
Page 47 - Configuring Channel Properties
Chapter 5 Using the SCXI-1503 SCXI-1503 User Manual 5-4 ni.com time. For continuous acquisition, you must use a while loop around the acquisition components even if you configured the task for continuous acquisition using MAX or the DAQ Assistant. For continuous and buffered acquisitions, you can se...
Page 51 - Completing the Application; Developing an Application Using LabVIEW
Chapter 5 Using the SCXI-1503 SCXI-1503 User Manual 5-8 ni.com charts, graphs, slide controls, and gauge indicators. NI ADEs have tools that allow you to easily save the data to files such as spread sheets for easy viewing, ASCII files for universality, or binary files for smaller file sizes. Comple...
Page 54 - Specifying Channel Strings in NI-DAQmx
Chapter 5 Using the SCXI-1503 © National Instruments Corporation 5-11 SCXI-1503 User Manual Note Refer to the LabVIEW Help for information about property nodes and specific NI-DAQmx properties. Specifying Channel Strings in NI-DAQmx Use the channel input of DAQmx Create Channel to specify the SCXI-1...
Page 56 - Programmable NI-DAQmx Properties; Calibration; External Calibration
Chapter 5 Using the SCXI-1503 © National Instruments Corporation 5-13 SCXI-1503 User Manual Programmable NI-DAQmx Properties All of the different ADEs that configure the SCXI-1503 access an underlying set of NI-DAQmx properties. Tables 5-1 through 5-4 provide a list of some of the properties that co...
Page 57 - Manual Calibration
Chapter 5 Using the SCXI-1503 SCXI-1503 User Manual 5-14 ni.com The functions that are required for externally calibrating the SCXI-1503 are available in NI-DAQmx 8.1 or later. Refer to the NI-DAQmx Help for details about these functions. Most external calibration documents for SCXI modules are avai...
Page 58 - Analog Input
© National Instruments Corporation A-1 SCXI-1503 User Manual A Specifications This appendix lists the specifications for the SCXI-1503 modules. These specifications are typical at 25 ° C unless otherwise noted. Analog Input Input Characteristics Number of channels ............................... 16 ...
Page 60 - Dynamic Characteristics; Filter
Appendix A Specifications © National Instruments Corporation A-3 SCXI-1503 User Manual CMRR characteristics (DC to 60 Hz) Gain 1 .............................................. –75 dB min –90 dB typ Gain 100 .......................................... –106 dB min –110 dB typ Output range.................
Page 61 - Excitation
Appendix A Specifications SCXI-1503 User Manual A-4 ni.com Gain temperature coefficient(gain 1 or 100) ........................................±15 ppm/ ° C max ±5 ppm/ ° C typ Excitation Channels .................................................16 single-ended outputs Current output ...................
Page 62 - Physical
Appendix A Specifications © National Instruments Corporation A-5 SCXI-1503 User Manual Physical Figure A-1. SCXI-1503 Dimensions Weight .................................................... 745 g (26.3 oz) Maximum Working Voltage Maximum working voltage refers to the signal voltage plus the common-mo...
Page 63 - Safety; Electromagnetic Compatibility; CE Compliance; Waste Electrical and Electronic Equipment (WEEE)
Appendix A Specifications SCXI-1503 User Manual A-6 ni.com Safety This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN-61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other sa...
Page 64 - Removing the SCXI-1503 from MAX; Devices and Interfaces; Removing the SCXI-1503 from a Chassis
© National Instruments Corporation B-1 SCXI-1503 User Manual B Removing the SCXI-1503 This appendix explains how to remove the SCXI-1503 from MAX and an SCXI chassis or PXI/SCXI combination chassis. Removing the SCXI-1503 from MAX To remove a module from MAX, complete the following steps after launc...
Page 66 - Common Questions; Download Software»Drivers and Updates»Search Drivers and; How can I ground a floating voltage measurement?
© National Instruments Corporation C-1 SCXI-1503 User Manual C Common Questions This appendix lists common questions related to the use of the SCXI-1503. Which version of NI-DAQ works with the SCXI-1503, and how do I get the most current version of NI-DAQ? You must have NI-DAQ 8.1 or later. Visit th...
Page 67 - Can I connect
Appendix C Common Questions SCXI-1503 User Manual C-2 ni.com Can I connect N current-output channels in parallel to create a precision current source that provides N × 100 μ A? Yes, you can connect the current output in parallel. When connecting the output in parallel, connect the appropriate IEX+ t...
Page 69 - Symbol
© National Instruments Corporation G-1 SCXI-1503 User Manual Glossary Symbol Prefix Value µ micro 10 – 6 m milli 10 – 3 k kilo 10 3 M mega 10 6 Numbers/Symbols % percent + positive of, or plus – negative of, or minus ± plus or minus < less than / per ° degree Ω ohms +5 V (signal) +5 VDC source si...
Page 76 - Index; Numerics
© National Instruments Corporation I-1 SCXI-1503 User Manual Index Numerics 2-wire configuration of resistive devices, 2-43-wire resistive sensor connected in 2-wire configuration, 2-5lead-resistance compensation with two matched current sources, 2-6 4-wire configuration of resistive devices, 2-3 A ...
