NATIONAL INSTRUMENTS SCXI-2000 Chassis Device User Guide

NATIONAL INSTRUMENTS SCXI-2000 Chassis Device

Product Information: SCXI-2000

The SCXI-2000 is a device manufactured by National Instruments. It is part of the SCXI system, designed for data acquisition and control applications. The device comes with a one-year warranty that covers defects in materials and workmanship, including parts and labor. The warranty period starts from the date of shipment.

This device is copyrighted by National Instruments Corporation, and reproduction or transmission of its documentation is prohibited without prior written consent.

The SCXI-2000 is a trademark of National Instruments Corporation, along with other trademarks such as ComponentWorksTM, CVITM, DAQCardTM, DAQPadTM, LabVIEWTM, ni.comTM, NI-DAQTM, PXITM, RTSITM, and VirtualBenchTM.

It is important to note that National Instruments products are not suitable for use in surgical implants or critical components in life support systems.

Product Usage Instructions

Chapter 1: Introduction to SCXI
In this chapter, you will find information on what you need to get started with the SCXI system. It also provides guidance on identifying your SCXI components.

Chapter 2: Installing SCXI Modules and Connecting the SCXI System
This chapter covers the installation process for the SCXI modules and connecting the SCXI system to your DAQ device or computer. It includes instructions for installing the necessary software, DAQ device, and SCXI modules.
The chapter also provides guidance on connecting the SCXI system using different interfaces:

• Using the Parallel Port
• Using a Plug-in DAQ Device or DAQCard
• Using an RS-232 or RS-485 Serial Port

Follow the instructions provided in this chapter to ensure a proper installation and connection of your SCXI system.

SCXI-2000

SCXITM
Getting Started with SCXI
Getting Started with SCXI
July 2000 Edition Part Number 320515F-01

Worldwide Technical Support and Product Information www.ni.com
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For further support information, see the Technical Support Resources appendix. To comment on the documentation, send e-mail to [email protected]
© Copyright 1993, 2000 National Instruments Corporation. All rights reserved.

Important Information

Warranty
SCXI devices are 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 defective during the warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period. National Instruments does not warrant that the operation of the software shall be uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty.
National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical accuracy. In the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition. The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.
EXCEPT AS SPECIFIED HEREIN, NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER. NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owner’s failure to follow the National Instruments installation, operation, or maintenance instructions; owner’s modification of the product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.
Trademarks
ComponentWorksTM, CVITM, DAQCardTM, DAQPadTM, LabVIEWTM, National InstrumentsTM, ni.comTM, NI-DAQTM, PXITM, RTSITM, SCXITM, and VirtualBenchTM are trademarks of National Instruments Corporation.
ICP® is a registered trademark of PCB Piezotronics, Inc. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
(1) NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN.
(2) IN ANY APPLICATION, INCLUDING THE ABOVE, RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS, INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY, COMPUTER HARDWARE MALFUNCTIONS, COMPUTER OPERATING SYSTEM SOFTWARE FITNESS, FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION, INSTALLATION ERRORS, SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS, MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES, TRANSIENT FAILURES OF ELECTRONIC SYSTEMS (HARDWARE AND/OR SOFTWARE), UNANTICIPATED USES OR MISUSES, OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER (ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED “SYSTEM FAILURES”). ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS (INCLUDING THE RISK OF BODILY INJURY AND DEATH) SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE. TO AVOID DAMAGE, INJURY, OR DEATH, THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES, INCLUDING BUT NOT LIMITED TO BACK-UP OR SHUT DOWN MECHANISMS. BECAUSE EACH END-USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS’ TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS, THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.

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About This Manual

This guide is a beginner’s handbook to the installation, configuration, and use of the National Instruments Signal Conditioning eXtensions for Instrumentation (SCXI) chassis, modules, and associated data acquisition (DAQ) devices. This guide is an introduction to SCXI, not a complete reference. Advanced users should refer to the appropriate hardware and software manuals for further information.

Conventions Used in This Guide

AI device AT E Series devices bold DAQCard E Series devices DIO-24 DIO-96

The following conventions are used in this guide.
The symbol indicates that the following text applies only to a specific product, a specific operating system, or a specific software version.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to avoid injury, data loss, or a system crash.
This icon denotes a warning, which advises you of precautions to take to avoid being electrically shocked.
Refers to analog input devices that have AI in their names, such as the AT-AI- 16XE-10.
These AT devices have an E- toward the ends of their names, such as the AT- MIO-16DE-10 and AT-AI-16XE-10.
Bold text denotes items that you must select or click on in the software, such as menu items and dialog box options. Bold text also denotes parameter names.
Refers to the DAQCard-AI-16E-4 and DAQCard-AI-16XE-50.
Refers to the PC-DIO-24, DAQCard-DIO-24, and PCI-6503.
Refers to the PC-DIO-96/PnP, PCI-DIO-96, PCI-6508, PXI-6508, or DAQPad-6508.

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About This Manual

DIO device italic
Lab/1200 device MIO device MIO-16D monospace
NI-DAQ PXI Remote SCXI
SCXI analog input module
SCXI analog output module SCXI chassis SCXI communication module SCXI digital module SCXI DAQ module

Refers to any digital I/O devices, such as the PC-DIO-96/PnP PCI-DIO-32HS, or PXI-6533.
Italic text denotes variables, emphasis, a cross reference, or an introduction to a key concept. This font also denotes text that is a placeholder for a word or value that you must supply.
Refers to the DAQCard-1200, DAQPad-1200, Lab-PC+, Lab-PC-1200, Lab-PC-1200AI, SCXI-1200, and PCI-1200.
Refers to the multifunction I/O devices.
Refers to the AT-MIO-16DE-10.
Text in this font denotes text or characters that you should enter from the keyboard, sections of code, programming examples, and syntax examples. This font is also used for the proper names of disk drives, paths, directories, programs, subprograms, subroutines, device names, functions, operations, variables, filenames and extensions, and code excerpts.
Refers to the NI-DAQ driver software unless otherwise noted.
Refers to PCI eXtensions for Instrumentation and is derived from the CompactPCI Standard.
Refers to an SCXI configuration where either an SCXI-2000 chassis or an SCXI-2400 remote communications module is connected to the serial port of your computer.
Refers to the SCXI-1100, SCXI-1102/B/C, SCXI-1104/C, SCXI-1112, SCXI-1120/D, SCXI-1121, SCXI-1122, SCXI-1125, SCXI-1126, SCXI-1140, SCXI-1141, SCXI-1142, SCXI-1143, SCXI-1520, SCXI-1530/1531, and SCXI-1540.
Refers to the SCXI-1124.
Refers to the SCXI-1000, SCXI-1000DC, SCXI-1001, and SCXI-2000.
Refers to the SCXI-2400.
Refers to the SCXI-1160, SCXI-1161, SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R.
Refers to the SCXI-1200.

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Related Documentation
As you read this manual, you may find it helpful to refer to the following documents: · Your SCXI chassis, module, terminal block, connector-and-shell, and
cable assembly user manuals or installation guides · Your DAQ hardware user manual · Your National Instruments software manuals · Application notes

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1
Introduction to SCXI
This chapter gives a brief overview of SCXI and helps you identify the components of an SCXI system.
Figure 1-1 shows how you can use the flexible architecture of SCXI in three ways–as a front-end signal conditioning system for plug-in DAQ devices, or as an external DAQ system that attaches either directly to the computer parallel port or an RS-232 or RS-485 serial port.
Figure 1-1a shows SCXI products as a front-end signal conditioning system for plug-in DAQ devices. The SCXI chassis can house a variety of signal conditioning modules. Analog input signals are conditioned and passed to a single plug-in DAQ device for analog-to-digital conversion. The plug-in DAQ device also controls and monitors the operation of digital I/O and analog output modules in the SCXI system. You can monitor and control up to 3,072 signals with a single plug-in DAQ device.
Figure 1-1b shows an SCXI-1200 DAQ module with which you can condition and digitize your signals in the SCXI itself. The 12-bit SCXI-1200 module in an SCXI chassis digitizes the conditioned analog input signals and transmits the digital data to the computer parallel port.
Figure 1-1c shows an SCXI system that uses an SCXI-2000 or SCXI-2400 to transmit data digitized by an SCXI-1200 to the computer using an RS-232 or RS-485 serial connection. If you use an RS-485, you can connect multiple SCXI chassis within a single network. If you use an SCXI chassis without any analog input modules, you do not need an SCXI-1200 module in that chassis.

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Chapter 1 Introduction to SCXI

PC Plug-In DAQ Device
Conditioned Signals

SCXI Signal Conditioning
Chassis and Modules

SCXI-1001

SCXI

1140

SCXI

1140

SCXI

1140

SCXI

1140

SCXI MAINFRAME

a. Front-End Signal Conditioning for Plug-In DAQ Device

SCXI Signal Conditioning and
DAQ Modules

SCXI-1001

SCXI

1140

SCXI

1140

SCXI

1140

SCXI

1140

SCXI

1140

SCXI MAINFRAME

Parallel Port Link

SCXI-1200 12-Bit DAQ Module

b. External DAQ System

RS-485

RS-232 or RS-485

SCXI-1001

SCXI

1140

SCXI

1140

SCXI

1140

SCXI

1140

SCXI

1140

SCXI MAINFRAME

SCXI-1200 12-Bit DAQ Module

SCXI-2000 Chassis or SCXI-100X Chassis with
SCXI-2400 Module

c. Remote DAQ System Using Serial Connections Figure 1-1. SCXI Systems

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Chapter 1 Introduction to SCXI

What You Need to Get Started
To set up and use your SCXI system, you will need the following:
One of the following chassis and your SCXI chassis user manual:
­ SCXI-1000 ­ SCXI-1000DC ­ SCXI-1001 ­ SCXI-2000
SCXI modules and terminal blocks to use in your chassis SCXI-1200 DAQ module or DAQ device (if using any analog input
SCXI modules)
SCXI cable assembly Your computer NI-DAQ driver software for PC compatibles or Macintosh One of the following software packages:
­ LabVIEW for Macintosh ­ LabVIEW for Windows ­ LabWindows/CVI for Windows ­ ComponentWorks ­ VirtualBench
Identifying Your SCXI Components
The basic components of the SCXI system are terminal blocks, modules, chassis, cable assemblies, DAQ devices, and software, as shown in Figure 1-2. The following sections briefly describe the components of an SCXI system and help you to understand how they work together.

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Chapter 1 Introduction to SCXI

Computer
Plug-in DAQ Device SCXI Cable Assembly
SCXI Chassis

Computer
Cable to Parallel or Serial Port
SCXI Chassis (with one SCXI-1200)

SCXI Module SCXI Terminal Block or
Terminal Block Extension (TBX)

SCXI Module SCXI Terminal Block or
Terminal Block Extension (TBX)

SCXI Chassis

Figure 1-2. SCXI System Components
The SCXI chassis houses the SCXI modules, supplying power and controlling the SCXIbus. National Instruments offers four SCXI chassis: · SCXI-1000 4-slot chassis · SCXI-1000DC 4-slot, DC-powered chassis · SCXI-1001 12-slot chassis · SCXI-2000 4-slot, RS-232/485 serial communication chassis
The rugged aluminum SCXI chassis contains an analog bus, a digital bus, and a chassis controller that regulates bus operation, as shown in Figure 1-3. The analog bus transfers analog signals from all resident analog input modules to the DAQ device using a connection from one of the modules to the DAQ device. The digital lines of the DAQ device communicate with the SCXI chassis controller and manipulate the digital bus, which controls chassis operation.

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Chapter 1 Introduction to SCXI
The SCXI-2000 chassis also includes a communication processor that you can use to connect the SCXI system directly to the RS-232 serial port of a computer, or to an RS-485 network for long-distance data acquisition.

SCXI-1000

Conditioned Signals to DAQ Device or Digitized Volatage
Values to Parallel or Serial Port

MSAINCFRXAMIE
Unconditioned Signals from Transducers

Analog and Digital Bus Backplane

SCXI Modules

Figure 1-3. SCXI Chassis Signal Routing
National Instruments manufactures a variety of SCXI modules for use in SCXI chassis. Various analog input modules can multiplex, amplify, filter, and isolate voltage and current signals. Some modules have excitation potentials or currents and half-bridge completion networks for transducers such as strain gauges or resistive temperature devices (RTDs). Digital modules isolate digital signals through relays or optocouplers.
With the SCXI-1181 breadboard module, you can easily implement custom signal conditioning circuits.
The SCXI-2400 module is a serial communication module with the same RS-232 and RS-485 capabilities as the SCXI-2000 chassis. Use the SCXI-2400 in an RS-485 network for remote or long-distance data acquisition.

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Chapter 1 Introduction to SCXI

Product SCXI-1100 SCXI-1102/B/C SCXI-1104/C SCXI-1112 SCXI-1120/D SCXI-1121 SCXI-1122 SCXI-1124 SCXI-1125 SCXI-1126 SCXI-1140 SCXI-1141 SCXI-1142 SCXI-1143 SCXI-1520 SCXI-1530 SCXI-1531 SCXI-1540 SCXI-1160
SCXI-1161 SCXI-1162 SCXI-1162HV

Table 1-1 lists the National Instruments SCXI modules and accessories. For further descriptions of National Instruments SCXI modules, refer to Chapter 3, Configuring Your SCXI Hardware and Software.

Table 1-1. SCXI Modules

Classification Analog input Analog input Analog input Analog input Analog input Analog input Analog input Analog output Analog input Analog input Analog input Analog input Analog input Analog input Analog input Analog input Analog input Analog input Digital
Digital Digital input Digital input

Description 32-channel differential multiplexer/amplifier 32-channel amplifier module for low voltages 32-channel amplifier module for medium voltages 8-channel amplifier module for thermocouples 8-channel isolated amplifier 4-channel isolated amplifier with excitation 16-channel isolated multiplexer with excitation 6-channel isolated D/A converter Jumperless SCXI-1120 8-channel isolated frequency-to-voltage converter 8-channel simultaneously- sampling differential amplifier 8-channel programmable elliptic lowpass filter 8-channel programmable Bessel lowpass filter 8-channel programmable Butterworth lowpass filter 8-channel deluxe bridge with excitation 4-channel accelerometer module 8-channel accelerometer module 8-channel LVDT signal conditioner 16-channel electromechanical single-pole double-throw (SPDT) relay module 8-channel electromechanical SPDT relay module 32-channel optically- isolated digital input module 32-channel optically-isolated high-voltage digital input module

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Product SCXI-1163 SCXI-1163R SCXI-1180 SCXI-1181 SCXI-1200
SCXI-2400

Table 1-1. SCXI Modules (Continued)

Classification

Description

Digital output

32-channel optically-isolated digital output

Digital output

32-channel optically-isolated solid-state relay

Accessory

Feedthrough panel

Accessory

Breadboard

Analog, digital, Multifunction module with parallel port communication and timing I/O

Serial communication

RS-232/RS-485 serial communication interface

SCXI Terminal Blocks
SCXI terminal blocks attach directly to the front of an SCXI module and provide a quick, convenient method for connecting I/O signals to your system. There are two types of SCXI terminal blocks–direct-mount or TBX.
Direct-mount terminal blocks connect transducers to the screw terminals that are in a fully shielded terminal block enclosure. Strain-relief clamps hold the signal wires in place.
Terminal block extensions (TBXs) are DIN rail-mountable and attach to SCXI modules with shielded cables. These TBX terminal blocks are functionally equivalent to their direct-mount terminal block counterparts. Figure 1-4 shows the terminal block options and Table 1-2 lists the modules with which they work. Table 1-3 lists the TBX terminal blocks and the modules with which they work.
Several terminal blocks have a temperature sensor for cold-junction compensation with thermocouples. Terminal blocks can also perform additional signal conditioning function, including high-voltage attenuation, AC/DC coupling, bridge offset nulling, and shunt calibration.

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Chapter 1 Introduction to SCXI

Direct-Mount SCXI
Terminal Block

SCXI Chassis

a. SCXI Direct-Mount Terminal Block TBX Terminal Block
Shielded Cable SCXI Chassis
b. TBX Terminal Block Figure 1-4. Terminal Block Options

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Module SCXI-1100, SCXI-1102/B/C
SCXI-1104/C SCXI-1112 SCXI-1120/D, SCXI-1121, SCXI-1125
SCXI-1122 SCXI-1124 SCXI-1126

Table 1-2. Direct-Mount Terminal Blocks

Terminal/ Connector
Block
SCXI-1300

Terminal Block or

CJC

Connector and Shell Sensor

Terminal block

Yes

Other Features —

SCXI-1303

Terminal block

Yes1

SCXI-1308 SCXI-1310 SCXI-1300 N/A

Terminal block

No

Connector and shell No

Terminal block

Yes

No terminal block

N/A

required

SCXI-1320

Terminal block

Yes

SCXI-1321

Terminal block

Yes

(for

SCXI-1121)

SCXI-1327

Terminal block

Yes1

SCXI-1328 SCXI-1330 SCXI-1338 SCXI-1322 SCXI-1325 SCXI-1305

Terminal block

Yes1

Connector and shell No

Terminal block

No

Terminal block

Yes1

Terminal block

No

Terminal block

No

SCXI-1320

Terminal block

Yes

SCXI-1327

Terminal block

Yes1

Isothermal, signal referencing, and open thermocouple detection
0­20 mA and 4­20 mA current input
Low-cost connector-and-shell assembly
—
Connect thermocouples directly using mini-thermocoupleconnectors,built-inCJC sensor per channel
—
Offset-nulling and shunt calibration for strain gauges
100:1 attenuation of voltages to 250 Vrms2, switch configurable per channel
Isothermal design for thermocouples
Low-cost connector-and-shell assembly
0­20 mA and 4­20 mA current input
—
—
AC/DC coupling, signal referencing, switch-configurable per channel, BNC connectors
— 100:1 attenuation of voltages to 250 Vrms2, switch configurable per channel

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Module SCXI-1140
SCXI-1141, SCXI-1142, SCXI-1143
SCXI-1160 SCXI-1161 SCXI-1162/ 1162HV, SCXI-1163/1163R SCXI-1180 SCXI-1181, SCXI-1181K
SCXI-1200 SCXI-1520
SCXI-1530 SCXI-1531

Table 1-2. Direct-Mount Terminal Blocks (Continued)

Terminal/ Connector
Block SCXI-1301 SCXI-1304
SCXI-1305
SCXI-1310 SCXI-1304
SCXI-1305
SCXI-1310 SCXI-1324
— SCXI-1326

Terminal Block or

CJC

Connector and Shell Sensor

Other Features

Terminal block

No

—

Terminal block

No

AC/DC coupling, switch configurable per

channel

Terminal block

No

AC/DC coupling signal referencing,

switch-configurable per channel, BNC

connectors

Connector and shell No

Low-cost connector and shell assembly

Terminal block

No

AC/DC coupling,

switch-configurable per channel

Terminal block

No

AC/DC coupling, switch-configurable per

channel, BNC connectors

Connector and shell No

Low-cost connector-and-shell assembly

Terminal block

No

—

No terminal block–screw terminals in module

Terminal block

No

—

SCXI-1302 SCXI-1300 SCXI-1301 SCXI-1310 SCXI-1330 SCXI-1302 SCXI-1314

Terminal block

No

Terminal block

Yes

Terminal block

No

Connector and shell No

Connector and shell No

Terminal block

No

Terminal Block

SCXI-1310 N/A

Connector and shell No

No terminal block

No

required

— — — — — — Socketedquarter-bridgecompletionresistor per channel, two socketed shunt-calibration resistors per channel — Connect signals directly using BNC connectors

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Table 1-2. Direct-Mount Terminal Blocks (Continued)

Module

Terminal/ Connector
Block

Terminal Block or

CJC

Connector and Shell Sensor

Other Features

SCXI-1540

SCXI-1315

Terminal block

No

—

SCXI-1310

Connector and shell No

—

SCXI-2400

N/A

N/A

N/A

Serial communication module

1 The SCXI-1303, SCXI-1322, SCXI-1327, and SCXI-1328 use an onboard thermistor for sensing cold-junction temperature. Other terminal blocks use an IC temperature sensor.
2 300Vrms when used with the SCXI-1125

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Term. Blks
TBX-1303

1100/ 1102/ B/C

1120/D 1121 1125
—

Table 1-3. TBX Terminal Blocks for SCXI

1122 —

1124 —

SCXI Modules

1140/ 1141/ 1142/ 1143

1160 1161

—

—

—

1162/ 1162HV/
1163/ 1163R
—

1180 —

TBX-1328

—

TBX-1325

—

TBX-1326

—

TBX-24F

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

CB-50

—

—

—

—

—

—

—

—

1 The TBX-1303 and TBX-1328 use an onboard thermistor for sensing cold- junction temperature.

1181/ 1181 K

— — — —
—

1200

CJC Sensor

Required Cables

—

1

SH96-96 or

R96-96

—

1

SH32-32-A

—

— SH48-48-A

—

— SH48-48-B

—

— User-supplied

wiring

—

NB1

Chapter 1 Introduction to SCXI

Chapter 1 Introduction to SCXI

Connector-and-Shell Assemblies
Connector-and-shell assemblies are low-cost alternatives to SCXI terminal blocks and are less rugged, plastic assemblies that connect signals using solder pins.

DAQ Plug-In Devices and PC Cards
You can connect the conditioned analog signals from an SCXI system directly to a plug-in DAQ device or DAQCard. Using SCXI multiplexing capability, a single plug-in DAQ device or DAQCard can measure up to 3,072 conditioned analog signals.
You can use any of the following DAQ devices to control an SCXI system: · Multifunction I/O (MIO) and AI devices can control single-chassis or
multichassis SCXI systems consisting of any combination of analog and digital SCXI modules. Use MIO and AI devices for systems that require high-speed, hardware-controlled scanning. · You can use all E Series AT, PCMCIA, PCI, and PXI bus devices except the 6110 and 6111 devices.
Lab/1200 Series devices can control single-chassis SCXI systems consisting of any combination of analog and digital SCXI modules.
DIO devices can control single-chassis or multichassis SCXI systems consisting of digital SCXI modules.

DAQ Modules

As an alternative to a plug-in DAQ device or DAQCard, you can use an SCXI DAQ module, such as the SCXI-1200. The SCXI-1200, which is functionally similar to the PCI-1200 and DAQCard-1200, can control single-chassis systems with any combination of analog and digital modules. The SCXI-1200 connects to the computer parallel port, or to the SCXI-2000 chassis or SCXI-2400 module, which in turn communicates with the computer using a serial port.

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SCXI Cable Assemblies
If you are using a plug-in DAQ device or DAQCard, connect it to the SCXI chassis using one of the SCXI cable assemblies listed in Table 1-4.

Table 1-4. SCXI Cable Assemblies

Cable Assembly SCXI-1343
SCXI-1348

Device Connection
Screw-terminal adapter for custom configurations
DIO-32F

SCXI-1349

MIO E Series devices with 68-pin connector

SCXI-1353

MIO E Series devices with 100-pin connector

SCXI-1354

DAQCard-1200

SCXI-1355

AT-DIO-32HS, PCI-DIO-32HS

NB5 ribbon cable with PC-DIO-96/PnP optional SCXI-1351

R1005050 with optional SCXI-1351

PCI-DIO-96

Some cable assemblies have extra male breakout connectors with which you can access unused DAQ device signals through the SCXI-1180 feedthrough panel or the SCXI-1181 breadboard module. The SCXI-1200 comes with a 1 m parallel port cable.
SCXI Multichassis System with Plug-In DAQ Device
For a multichassis SCXI system, that is cabled using an SCXI-1346 or SCXI-1350, chassis are daisy-chained using multichassis adapters with shielded or unshielded cables to a single plug-in DAQ device. You can control up to eight SCXI-1000, SCXI-1000DC, or SCXI-1001 chassis with a single AI, MIO, or DIO-24 device. Figure 1-5 shows a multichassis configuration using the SCXI-1346 multichassis adapter.

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SCXI-1349 SCXI-1346 Multichassis Adapters
SH6868 Cables

Computer with MIO Device

SCXI Chassis
Figure 1-5. Multichassis SCXI System with Shielded Cabling
When using shielded cabling for a multichassis configuration, the maximum allowable cable length from the DAQ device to the last chassis is 10 m.
Optional Software
The final component of an SCXI system is software. You can program your SCXI system using NI-DAQ driver software, LabWindows/CVI, LabVIEW for Windows, LabVIEW for Macintosh, or ComponentWorks.
NI-DAQ driver software ships with your National Instruments DAQ device, SCXI-1200, SCXI-2000, or SCXI-2400. NI-DAQ has a library of functions that you can call from your application development environment (ADE).
Alternatively, you can use LabVIEW for Windows, LabVIEW for Macintosh, LabWindows/CVI for Windows, or ComponentWorks. LabVIEW and LabWindows/CVI are innovative program development software packages for data acquisition and control applications. LabVIEW uses graphical programming, whereas LabWindows/CVI enhances ANSI C. Both packages include extensive libraries for data acquisition, instrument control, data analysis, and graphical data presentation.

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ComponentWorks is a collection of object linking and embedding (OLE) controls and dynamic link libraries (DLLs) for acquiring, analyzing, and presenting data within Visual Basic.
Whether you are using conventional programming languages, LabVIEW, LabWindows/CVI, or ComponentWorks, your application uses the NI-DAQ driver software, as illustrated in Figure 1-6.

Conventional Programming Environment (PC or Macintosh)

LabVIEW (PC or Macintosh)

LabWindows/CVI (PC)

Component Works (PC)

NI-DAQ Driver Software

DAQ or SCXI Hardware
Figure 1-6. The Relationship Between the Programming Environment, NI-DAQ, and the DAQ Hardware

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Overview of SCXI Operation
This section describes on the SCXI analog input modules, and analog and digital output modules used with DAQ devices.
Analog Input Modules
Table 1-1 lists the analog input modules. Analog SCXI modules can operate in parallel or multiplexed mode. In parallel mode, the modules perform no signal multiplexing and simply pass the conditioned signals directly to corresponding channels on the DAQ device. Therefore, each module is directly connected to its own DAQ device.
You will probably operate your analog SCXI modules in multiplexed mode. You can multiplex thousands of conditioned analog input signals into a single DAQ device. In this mode, connect the plug-in DAQ device to only one SCXI module in a chassis. Digital lines on the DAQ device control the modules and chassis. The DAQ device uses three or four digital output lines and the EXTSTROBE line to program the SCXI system. In addition, a digital input line is used for reading information back from the SCXI modules.
When using SCXI analog input modules, you can measure analog input signals by doing single-channel readings or hardware-timed, multiple-channel scanning.
During single-channel readings, the DAQ device serially writes a digital pattern to SCXI Slot 0, located in the chassis, indicating which SCXI module to address. The DAQ device then writes a digital pattern to the module indicating which input channel is to be read. This configures the module to route the desired signal to the analog bus of the SCXI chassis. Ultimately, the signal is routed to analog input channel 0 of the DAQ device. The DAQ device then reads channel 0, as shown in Figure 1-7. NI-DAQ automatically performs this low-level digital communication and signal routing when you call the single-channel analog input functions.

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Analog Input Signals

SCXI Chassis
Module n
Multiplexing and
Conditioning Circuitry
Module 1
Multiplexing and
Conditioning Circuitry
Slot 0

Input Channel 0 Plug-In DAQ Device
DIO Lines (program the chassis
and modules)
Analog Bus

Figure 1-7. SCXI Signal Routing
With multichannel scanning, the DAQ device programs SCXI Slot 0 with a list of modules and the number of channels to scan from each module. Each module in the list is programmed with the channel on which to start the scan. The DAQ device or module then begins the multichannel scan. The SCANCLK signal from the AI or MIO device synchronizes the SCXI multiplexing with the internal clock that triggers the A/D conversions on the DAQ device. SCXI Slot 0 enables and disables the modules according to the preprogrammed list. In this way, the system multiplexes channels from several modules to an analog input channel of the DAQ device at very high rates. NI-DAQ contains high-level functions you can use for multichannel scanning operations.

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Analog and Digital Output Modules
Digital SCXI modules include the SCXI-116X modules. Digital SCXI modules can operate in either serial mode or parallel mode. In serial mode, the SCXI system uses a maximum of four digital output lines and one digital input line of the DAQ device to control and monitor multiple digital modules. The plug-in device serially writes digital patterns to set the state of the digital output lines or relays, or serially reads patterns from the modules to determine the state of the digital input lines. In parallel mode, each SCXI digital I/O line corresponds to a digital I/O line of the DAQ device.
The SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R can operate in parallel mode. The SCXI-1160 and SCXI-1161 operate only in serial mode. Refer to Chapter 3, Configuring Your SCXI Hardware and Software, for more information.
The SCXI-1124 is a 6-channel isolated analog output module. As with the digital I/O modules, the SCXI-1124 is programmed serially by the DAQ device using a maximum of four digital output lines and one digital input line.

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Installing SCXI Modules and Connecting the SCXI System to the DAQ Device
This chapter describes how to install your SCXI hardware and how to connect your SCXI system to your computer.
Installing Your Software
All SCXI system configurations require NI-DAQ software. Whether you are using LabVIEW, LabWindows/CVI, ComponentWorks, or a third-party compiler, you must install the NI-DAQ driver software and Measurement & Automation Explorer to use your DAQ/SCXI system. 1. You receive NI-DAQ software with your DAQ device, SCXI-1200,
SCXI-2400, or SCXI-2000. · If you are using LabWindows/CVI, install LabWindows/CVI first.
Next, install NI-DAQ for PC compatibles and run the setup option, then select the LabWindows/CVI option to install LabWindows/CVI DAQ support. · LabVIEW includes all the NI-DAQ files you need to control the SCXI system. However, NI-DAQ for PC compatibles also has a LabVIEW update option that installs newer driver files in your system when the installation utility detects older files on your hard disk. 2. If you already have installed Measurement & Automation Explorer and the driver software and you received a newer NI-DAQ version, install the newer version now.

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Installing Your DAQ Device
If you are using SCXI with a plug-in DAQ device or DAQCard, install your DAQ hardware into your computer now and configure your DAQ device with Measurement & Automation Explorer. Refer to your DAQ device user manual for installation instructions.
Installing Your SCXI Modules

Caution Before installing an SCXI module or removing a module from the chassis, turn off power to the chassis.
Follow this procedure to install your SCXI modules: 1. To insert a module into the chassis, line up the module with the chassis
device guides. Slide the module back until it connects smoothly to the SCXI chassis backplane. Do not force the module. If the module does not connect smoothly, check that it is aligned correctly. 2. Tighten the thumbscrews finger-tight. Do not over-tighten. 3. Repeat steps 1 and 2 until you have installed all of your modules.
Connecting the SCXI System to the DAQ Device or Computer
This section explains how to connect your SCXI to a DAQ device or a computer using a parallel port, plug-in DAQ device or DAQCard, and an RS-232 or RS-485 Serial port.
Using the Parallel Port
Connect the parallel port cable to the computer parallel port. Connect the other end of the cable to the SCXI-1200 and tighten the mounting screws on the connectors to establish a firm connection.
Using a Plug-in DAQ Device or DAQCard
If you are using an SCXI module with a DAQ device or DAQCard, connect the SCXI chassis to your DAQ device with an SCXI-134X or SCXI-135X cable assembly. In certain instances, you can also use a 50-pin NB1 or 100-pin NB5 or NB6 ribbon cable in conjunction with an SCXI-1351 cable assembly.

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To connect the SCXI chassis to your DAQ device, you must connect the appropriate SCXI cable assembly to the DAQ device and then connect the other end to the rear connector of a single SCXI module. Use the following procedure:
1. Determine to which SCXI module you will connect the SCXI cable assembly. If all modules are configured for multiplexed or serial mode, you must cable only one module to a DAQ device. Use the following rules to determine which is the proper SCXI module to connect to the cable:
· For systems containing at least one analog SCXI module:
a. If you are using one or more SCXI-1140 modules, connect the cable assembly to any one of the SCXI-1140 modules. The SCXI-1140 requires a counter signal from the DAQ device to control the track-and-hold circuitry. Cable only one SCXI-1140 to the DAQ device because other SCXI-1140 modules in the chassis can access the track-and-hold counter signal through the SCXIbus in the chassis backplane.
b. If you are not using an SCXI-1140 and are using one or more SCXI-110X module, connect the cable assembly to any one of the SCXI-110X module. The SCXI-110X module drives only two of the DAQ device analog input lines, leaving the other lines available.
c. If you are not using any SCXI-1140 or SCXI-110X modules but are using other analog modules, connect the cable assembly to any one of the analog modules.
· For systems containing only digital modules (no analog modules), connect the cable assembly to any one of the digital modules.
· For systems containing both analog and digital modules, follow steps a through c for connecting an analog module. Enable the MISO and SERDATOUT lines of the module you connect to the DAQ device. For more information see Chapter 3, Configuring Your SCXI Hardware and Software.
· If the system contains any digital modules configured for parallel mode, connect each of these digital modules to a separate DIO device. If the system contains any analog modules configured for parallel mode, connect each of these modules to a separate analog DAQ device.

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2. Connect the connector at the bracket end of the SCXI cable assembly to the rear signal connector of the module. Figure 2-1 shows the cable assembly attached to the SCXI module and chassis.
Female Connector to Module (Rear panel omitted for clarity)

SCXI

Female Connector to DAQ Device
Male Breakout Connector (You can use the breakout connector, in conjunction with a feedthrough panel, to access unused lines from the DAQ device. You do not need to connect the breakout connector to any other module.) Rear of SCXI Chassis
Figure 2-1. Attaching the SCXI Cable Assembly to the SCXI Module and Chassis

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The DAQ device communicates with the SCXIbus through the connector at the bracket end of the cable assembly. Therefore, you do not need to connect the remaining modules to the SCXI cable assembly. Notice that the extra male breakout connector of the SCXI cable assembly is usually not connected to other modules. You can use this male breakout connector to connect unconditioned signals from the DAQ device to an SCXI-1180 feedthrough panel, SCXI-1181 breadboard module, or the SCXI-1351 one-slot cable extender.
In some cases, you can use an NB1 cable instead of the SCXI-1340 cable assembly. The NB1 cable and the SCXI-1340 are functionally identical; however, the SCXI-1340 ensures a more secure attachment than the NB1 cable, eliminating the possibility of inadvertently loosening the cable. The SCXI-1340 also has an extra male breakout connector that provides access to unconditioned signals using an SCXI-1180 feedthrough panel or SCXI-1181 breadboard module.
Cable assemblies also have an integral rear panel that you can fasten to the SCXI chassis with two screws. Using a cable assembly, you can remove a module from or insert a module into the chassis without disconnecting the cable.
3. If you are using an SCXI-1180 feedthrough panel to access unused lines of the DAQ device, install the feedthrough panel in the slot directly to the right of the module cabled to the DAQ device. Attach the SCXI-1180 feedthrough panel cable to the 50-pin male breakout connector of the SCXI cable assembly connected to the adjacent module.
4. If you are using an SCXI-1181 breadboard module, install the breadboard module in the slot directly to the right of the module that is connected to the DAQ device. Attach an SCXI-1351 one-slot cable extender to the 50-pin male breakout connector of the SCXI cable assembly connected to the adjacent module. Attach the other end of the SCXI-1351 to the rear signal connector of the SCXI-1181 breadboard module.
If you want to use more than 12 modules with a single DAQ device, you must use more than one SCXI chassis. In this case, you must use multichassis adapters.

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Using an RS-232 or RS-485 Serial Port
You can use the RS-232 port on your computer to control one chassis up to 100 ft from your computer. If your chassis is farther away or you are using multiple chassis, you must use RS-485.
If you are using an SCXI-2400 module, insert the SCXI-2400 into the far left slot of your SCXI-100X chassis and insert the SCXI-1200 module immediately next to it. Attach the connector adapter that is shipped with the SCXI-2400 module to the rear of the SCXI-2400. Connect the SCXI-1200 to this connector adapter using a 7 in. IEEE 1284 parallel port cable.
If you are using an SCXI-2000 chassis, insert the SCXI-1200 into the far left slot of your SCXI chassis. Next, connect the 7 in. IEEE 1284 parallel port cable to the back of the SCXI-1200 and the SCXI-2000 chassis.
Note If your SCXI chassis includes only analog output and digital I/O modules, you do not need the SCXI-1200 module. The SCXI-2000 and SCXI-2400 can communicate directly with analog output and digital I/O modules.
Next, connect the SCXI-2000 or SCXI-2400 to an RS-232 or RS-485 port of your computer. · RS-232–You can connect one SCXI chassis directly to the standard
COM serial port of your computer. If your computer has a 9-pin communication port, use the 2 m null modem cable included with the SCXI-2000/2400 to connect the 9-pin RS-232 connector on the front panel of the SCXI-2000/2400 to the serial port of your computer. · RS-485–Alternatively, you can connect the RS-485 connectors on the back of the SCXI-2000 chassis or SCXI-2400 module to an RS-485 network. For example, you can wire the RS-485 connector directly to a port of the plug-in AT-485 adapter device. The RS-485 connection is a four- wire connection. See your SCXI chassis user manual or SCXI-2400 User Manual for more information on configuring an RS-485 network.

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Configuring Your SCXI Hardware and Software
This chapter explains how to configure your SCXI hardware and National Instruments software.
Module Configuration
You may need to configure your SCXI modules before using them in your application. Some SCXI modules have a number of user-configurable jumpers that you can access by removing a single screw on the back of the module, as shown in Figure 3-1.
Rear of Module

Grounding Screw

© National Instruments Corporation

Figure 3-1. Removing the SCXI Module Grounding Screw

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Use this procedure to access the user-configurable jumpers. 1. Remove the grounding screw shown in Figure 3-1. 2. Remove the cover by inserting a flathead screwdriver in the slot at the
bottom of the module and gently pushing the screwdriver down until the cover pops off, as shown in Figure 3-2.
Grounding Screw
Removable Cover
Top of Module

Front Connector
Figure 3-2. Removing the SCXI Module Cover
To replace the cover, follow these steps: 1. Align the cover with the slot at the top of the module and snap the
bottom of the cover into place. 2. Replace the grounding screw, taking care not to over-tighten it.
Analog Modules
The following sections describe each analog SCXI module and contain step-by- step instructions for configuring the jumpers on each module. Follow the steps in the procedure for your module, check the position of each jumper, and read the jumper position description. Change the appropriate jumpers to configure the module for your application.

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Each analog module includes jumpers that configure the output referencing mode of the module. Configure these jumpers according to the analog input mode of the DAQ device. The recommended analog input mode of your DAQ device is as follows:
· E Series AI and MIO devices default to differential (DIFF) mode. National Instruments recommends that you leave your AI or MIO device configured for DIFF inputs.
· The Lab/1200 devices default to referenced single-ended (RSE) mode. Change its configuration to non-referenced single-ended (NRSE) mode for optimal noise elimination. Because of the cabling, you cannot use the Lab and 1200 devices in DIFF mode with SCXI.
Some analog SCXI modules include jumpers to configure module parameters such as filter cut off frequency, gain, analog input referencing, and output referencing. You must select the analog input referencing of a module according to the type of signal you are measuring. This section begins with a description of the main types of signals.
Ground-Referenced and Floating Signal Sources
Signal sources are either ground-referenced or floating.
A ground-referenced source is connected to the building ground and thus shares a common ground with the DAQ device, assuming that your computer is connected to the building power supply as well. Examples of ground-referenced signals are the non-isolated outputs of any devices that plug into the building power supply, such as signal generators and power supplies. Isolated outputs are not ground-referenced sources; you should treat them as floating sources.
A floating source has an isolated ground-reference point that you cannot assume to be at the same potential as any other ground reference. Examples of this type of source include transformers, insulated thermocouples, optical isolators, isolation amplifiers, and battery-powered devices.
In general, you should reference an input signal to ground at only one point. Therefore, do not reference the input of a differential amplifier module to ground if the signal source is already ground-referenced. If you are measuring a floating source, on the other hand, reference the input signal to ground.

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SCXI-1100 Module
This module is a 32-channel differential-input multiplexer with an onboard programmable-gain instrumentation amplifier (PGIA). The SCXI-1100 has 32 differential voltage or current input channels, an analog input range of ±10 V, jumper-selectable lowpass filters of 4 Hz and 10 kHz, and software- selectable module gains of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1,000, and 2,000. The SCXI-1100 works only in multiplexed mode and drives two analog input channels on the DAQ device–channel 0 and channel 1.
The SCXI-1100 is factory-configured for use with an MIO or AI device in DIFF mode, using ground-referenced signals, with no filtering. If this configuration is suitable, do not reposition any jumpers. However, you must adjust the configuration if any of the following conditions is true: · You are cabling this SCXI-1100 directly to a DAQ device and you are
using a Lab or 1200 device, or you are using an AI or MIO device in SE mode. · Your input signals are floating or nonreferenced and you want to ground reference the signals through a 100 k resistor installed in the module; however, it is best to ground-reference the signals at the source or at the terminal block. · You need hardware filtering and can accept slower scan rates. · You are measuring current signals.
Read the rest of this section on the SCXI-1100 module if any of the previous conditions applies to you.
The SCXI-1100 module has five user-configurable jumpers for configuring input signal referencing, filtering, and PGIA output referencing. Leave all other jumpers in their factory-default positions.
Use the following procedure to configure your SCXI-1100 module: 1. Configure the input signal referencing mode.
For ground-referenced sources, leave jumper W1 in the factory-default position. This is the preferred position.
Caution If you plan to use any floating thermocouples or other floating-source transducers, National Instruments recommends that you leave jumper W1 in the factory-default setting and either ground the negative lead of each transducer to the chassis ground on your terminal block, or reference the transducer to ground at the source. In either case, the transducer must not have a high common-mode voltage. Ground your signal at

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only one location along the entire signal path to prevent saturation of the amplifier and reduce common-mode noise.

Table 3-1. SCXI-1100 Input Signal Referencing Jumper Configurations

Jumper

Description

Configuration

1-2 Position–Ground-referenced source

W1

position (factory-default position).

1

2

3

2-3 Position–Floating (nonreferenced)

source position (connects an internal 100 k

1

resistor from CH- to ground). Read the text in

this section for the implications of using this

2

position.

3

If all of the sources are floating, you can configure jumper W1 to connect a 100 k resistor to the negative input of the amplifier to prevent saturation. This reduces the input impedance, however, and usually increases settling time and common-mode noise. Also, if W1 is connected to the 100 k resistor and any of the sources are ground-referenced or have high leakage to ground, a ground loop can result, causing DC offsets or noise.
2. Configure the filtering.
The SCXI-1100 has two lowpass, one-pole resistance-capacitor (RC) filters, with bandwidths of 10 kHz and 4 Hz, positioned after the amplifier. You select filtering by setting a single jumper to one of three positions–W2, W3, or W4. Table 3-2 shows the SCXI-1100 filtering jumper configuration.

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Jumper
W2 W3 W4

Table 3-2. SCXI-1100 Filtering Jumper Configuration

Description

Configuration

W2–Full bandwidth; no filtering (factory-default position).

W3–10 kHz lowpass filter; maximum aggregate sampling rate is 6.7 kS/s.

W2 W3 W4

W4–4 Hz lowpass filter; maximum aggregate sampling rate is 2.9 S/s.

W2 W3 W4

W2 W3 W4

Position W2, the factory-default position, disables filtering. Position W3 selects the 10 kHz lowpass filter, which filters out signal components with frequencies above 10 kHz. Position W4 selects the 4 Hz lowpass filter, which filters out signal components with frequencies greater than 4 Hz, such as 60 Hz noise. For more information, refer to the Noise and Filtering section in Chapter 4, Connecting and Using Accessories and Transducers.
Caution If you enable filtering, you cannot scan SCXI-1100 channels at high rates. Because the filter is applied after the signal is multiplexed, the sample rate or channel rate must be low enough for the filter to settle to the required accuracy. Table 3-2 shows the maximum recommended aggregate sampling rates for settling under worst-case conditions.
3. Configure the PGIA output referencing mode.
You use jumper W10 to select the output referencing mode of the SCXI-1100 PGIA. The correct output referencing mode depends on the input mode of the DAQ device. Table 3-3 shows three configurations for jumper W10.

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Table 3-3. SCXI-1100 PGIA Output Referencing Jumper Configuration

Jumper

Description

Configuration

A-R0R1–Parking position. Use this position for

W10

MIO or AI DAQ devices in DIFF input mode

AB

(factory-default position).

R0

R1

R2

AB-R0–Connects the PGIA reference to data acquisition analog ground, pins 1 and 2, of the rear signal connector. Use this position for DAQ devices with SE inputs, such as the Lab and 1200 devices, or MIO and AI devices in RSE mode.

AB R0 R1 R2

AB-R2–Select this position for AI or MIO devices in NRSE mode.

AB R0 R1 R2

4. Add current-loop receivers, if necessary. Process-current resistor packs are available from National Instruments. Refer to Input Filtering and Current- Loop Receivers in the SCXI-1100 User Manual for detailed information about filter pads and current loop receivers.
SCXI-1102/B/C Module
The SCXI-1102/B/C is a 32-channel amplifier module designed for measuring thermocouples and other low-bandwidth signals. Each of the 32 channels includes input protection circuitry to 42 VACpeak and a software-selectable gain of 1 or 100. The SCXI-1102, SCXI-1102/B, and SCXI-1102/C have lowpass filters with cutoff frequencies of 2 Hz, 200 Hz, and 10 kHz respectively. The SCXI-1102 works only in multiplexed mode and drives a single analog input channel on the DAQ device (channel 0). The SCXI-1102/B/C is software configurable and contains no jumpers.

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SCXI-1104/C Module
SCXI-1104 This module is for signal conditioning of low voltage and medium voltage signals. The SCXI-1104 has 32 differential analog input channels. On each channel, the SCXI-1104 has a three-pole lowpass filter with a 2 Hz cutoff frequency to reject 60 Hz noise. Each channel also has a divide by 10 attenuator stage before the amplifier. You can multiplex the SCXI-1104 inputs to a single output, which drives a single DAQ device channel.
SCXI-1104C This module is for signal conditioning of low voltage and medium voltage signals. The SCXI-1104C has 32 differential analog input channels. On each channel, the SCXI-1104C has a three-pole lowpass filter with a 10 kHz cutoff frequency. Each channel also has a divide by 10 attenuator stage before the amplifier. You can multiplex the SCXI-1104C inputs to a single output, which drives a single DAQ device channel.
SCXI-1112 Module
The SCXI-1112 module is an 8-channel module designed for measuring temperature using thermocouples. Each of the eight channels includes input protection circuitry to 42 V, a lowpass 2 Hz noise filter, and a fixed gain of 100. The SCXI-1112 works only in multiplexed mode. Use Measurement & Automation Explorer to configure the SCXI-1112. The SCXI-1112 is software configurable and contains no jumpers.
SCXI-1120/D Module
The SCXI-1120/D module is an 8-channel isolation amplifier. Features of the SCXI-1120/D include eight isolated input channels, 250 Vrms common-mode voltage range, jumper-selectable lowpass filtering, and individually configurable jumper-selectable channel gains of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1,000, and 2,000.
The SCXI-1120/D is factory configured for use with an MIO or AI device in DIFF mode; each module channel is configured for a gain of 1,000 (input range of ±5 mV), and 4 Hz filtering (4.5 kHz for the SCXI-1120/D). If this configuration is suitable for your application, do not reposition any of the

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jumpers. However, you must adjust the jumper configuration if any of the following conditions is true:
· You are cabling this SCXI-1120/D directly to a DAQ device and you are using a Lab or 1200 device, or you are using an AI or MIO device in SE mode.
· You need gain or bandwidth different from the default value on any channel.
· You are using digital modules in the same chassis and are cabling the SCXI-1120/D to a DAQ device.

Read the rest of this section on the SCXI-1120/D module if any of the previous conditions applies to you.

The SCXI-1120/D has 42 user-configurable jumpers, many of which perform the same function but configure different channels. You can set the jumpers to configure gain, filtering, temperature sensor signal routing, and signal output referencing. Leave all other jumpers in the factory-default positions.

Use the following procedure to configure your SCXI-1120/D module:
1. Configure the gains.
Each input channel has two user-configurable gain stages. The first gain stage provides gains of 1, 10, 50, and 100, and the second stage provides gains of 1, 2, 5, 10, and 20. Tables 3-4 and 3-5 show how to set up the gain for each channel.

Table 3-4. Gain Jumper Allocation

Input Channel Number

First Gain Jumper

Second Gain Jumper

0

W1

W9

1

W2

W10

2

W3

W11

3

W4

W12

4

W5

W13

5

W6

W14

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Table 3-4. Gain Jumper Allocation (Continued)

Input Channel Number

First Gain Jumper

Second Gain Jumper

6

W7

W15

7

W8

W16

The SCXI-1120D has an additional fixed pre-stage gain of 0.5.
The SCXI-1120 is shipped with the first-stage gain set to 100 (position A), and a second-stage gain set to 10 (position D). The SCXI-1120D is shipped with the first-stage gain set to 100 (position A), and the second-stage gain set to 20 (position E). To change the gain of your module, move the appropriate jumper on your module to the position indicated in Table 3-5.
To determine the overall gain of a given channel on the SCXI-1120 use the following formula:

Overall gain = First stage gain · Second stage gain
To determine the overall gain of a given channel on the SCXI-1120D use the following formula:

Overall gain

=

1-2

·

First

stage gain · Second

stage gain

Table 3-5. Gain Jumper Positions

Gain

Setting

Jumper Position

First-stage

1

D

10

C

50

B

100

A (factory-default

setting)

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Table 3-5. Gain Jumper Positions (Continued)

Gain

Setting

Jumper Position

Second-stage

1

A

2

B

5

C

10

D (factory-default

setting for the

SCXI-1120)

20

E (factory-default

setting for the

SCXI-1120D)

2. Configure the filtering.
SCXI-1120 Filter Jumpers
Two-stage filtering is also available on your SCXI-1120 module. The first stage is located in the isolated section of the input channel, whereas the second stage is located in the nonisolated section of your input channel. Two- stage filtering eliminates the noise generated by the isolation amplifier, producing a higher signal-to-noise ratio. Furthermore, two filter bandwidths are available, 10 kHz and 4 Hz.

Table 3-6. SCXI-1120 Filter Jumper Allocation

First Filter Jumper

Second Filter Jumper

Input Channel Number

4 Hz (Factory Default)

10 kHz

4 Hz (Factory Default)

10 kHz

0

W17-A

W17-B

W25

W26

1

W18-A

W18-B

W27

W28

2

W19-A

W19-B

W29

W30

3

W20-A

W20-B

W31

W32

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Table 3-6. SCXI-1120 Filter Jumper Allocation (Continued)

First Filter Jumper

Second Filter Jumper

Input Channel Number

4 Hz (Factory Default)

10 kHz

4 Hz (Factory Default)

10 kHz

4

W21-A

W21-B

W33

W34

5

W22-A

W22-B

W35

W36

6

W23-A

W23-B

W37

W38

7

W24-A

W24-B

W39

W40

Your SCXI-1120 is shipped in the 4 Hz position. Verify that both stages are set to the same bandwidth to ensure that the required bandwidth is achieved. Notice that one jumper block is available for each filter stage.
SCXI-1120D Filter Jumpers
Two-stage filtering is also available on your SCXI-1120D module. The first stage is located in the isolated section of the input channel, whereas the second stage is located in the nonisolated section of your input channel. Two- stage filtering eliminates the noise generated by the isolation amplifier, producing a higher signal-to-noise ratio. Furthermore, two filter bandwidths are available, 22.5 kHz and 4.5 kHz.

Table 3-7. SCXI-1120D Filter Jumper Allocation

First Filter Jumper

Second Filter Jumper

Input Channel Number

4.5 kHz (Factory Default)

22.5 kHz

22.5 kHz

4.5 kHz (Factory Default)

0

W17-A

W17-B

W25

W26

1

W18-A

W18-B

W27

W28

2

W19-A

W19-B

W29

W30

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Table 3-7. SCXI-1120D Filter Jumper Allocation (Continued)

First Filter Jumper

Second Filter Jumper

Input Channel Number

4.5 kHz (Factory Default)

22.5 kHz

22.5 kHz

4.5 kHz (Factory Default)

3

W20-A

W20-B

W31

W32

4

W21-A

W21-B

W33

W34

5

W22-A

W22-B

W35

W36

6

W23-A

W23-B

W37

W38

7

W24-A

W24-B

W39

W40

Your SCXI-1120D is shipped in the 4.5 kHz position. Verify that both stages are set to the same bandwidth to ensure that the required bandwidth is achieved. Notice that one jumper block is available for each filter stage.
3. Configure the temperature sensor signal routing, if necessary.
Jumper W41 controls the routing of the temperature sensor signal available on the SCXI-1320 terminal block. Use position 1-2 (the factory-default position) for MTEMP (multiplexed) mode. Position 2-3 for DTEMP (direct) mode is no longer supported by the current version of the SCXI-1320 terminal block.
4. Configure the amplifier output referencing mode.
The signal output referencing is relevant only if you are connecting this SCXI-1120/D module directly to a DAQ device.
Use jumper W46 to configure the various referencing modes of the SCXI-1120/D instrumentation amplifier output. The correct output referencing mode depends on the input mode of the DAQ device you use.

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Table 3-8 shows the signal referencing configurations for jumper W46.

Table 3-8. SCXI-1120/D Signal Referencing Jumper Configuration

Jumper
W46

Description
B-R0R1–Parking position. Use this position for MIO or AI devices in DIFF input mode. (factory-default position).

Configuration
B A R2 R1 R0

AB-R2–Select this position for AI or MIO devices in NRSE mode.

B A R2 R1 R0

AB-R0–Connects the PGIA reference to data acquisition analog ground, pins 1 and 2, of the rear signal connector. Use this position for DAQ devices with SE inputs, such as the Lab and 1200 devices, or MIO and AI devices in RSE mode.

B A R2 R1 R0

5. If you are using any digital SCXI modules in serial mode and want to connect the SCXI-1120/D module to the plug-in DAQ device, configure the SCXI-1120/D module to connect the MISO signal to the SERDATOUT pin (jumper W43).
SCXI-1121 Module
This module is a 4-channel isolation amplifier with excitation. Major features include four channels of isolated input, 1,500 Vrms isolation per channel, current or voltage excitation, an analog input range of ±5 V, 240 Vrms common- mode voltage, jumper-selectable lowpass three-pole RC filters with values of 4 Hz or 10 kHz, and individually configurable jumper-selectable channel gains of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1,000, and 2,000.
The SCXI-1121 module has 45 user-configurable jumpers. Position the jumpers to configure gain, filtering, excitation mode, bridge completion, and signal output referencing. Leave all other jumpers in their factory-default positions.

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The SCXI-1121 is factory-configured for use with an MIO or AI device in DIFF mode. Each module channel is configured for a gain of 1,000 (an input range of ±5 mV), 4 Hz filtering, 3.33 V voltage excitation, and disabled bridge completion. If this configuration is suitable for your application, do not reposition any of the jumpers. However, you must adjust the jumper configuration if any of the following conditions is true:
· You are cabling the SCXI-1121 module directly to a DAQ device and you are using a Lab or 1200 device, or you are using an AI or MIO device in SE mode.
· You need a different gain or bandwidth (other than 1,000 and 4 Hz) on any channel.
· Your transducers require current excitation or 10.0 V voltage excitation.
· Your transducers require half-bridge completion circuitry.
· You are using digital modules and are cabling the SCXI-1121 to a DAQ device.

Read the rest of this section on the SCXI-1121 module if any of the previous conditions applies to you.

Use the following procedure to configure your SCXI-1121 module:
1. Configure the gain.
You select the gain for each SCXI-1121 channel in two stages, each of which is jumper controlled. The default gain for each channel is 1,000.
The total gain produced on a particular channel is equal to the product of the first-stage and second-stage gains applied to that channel, as shown by the following equation:

Total gain (channel n) = first-stage gain (channel n) · second-stage gain (channel n)
The effective input range that you can measure with a particular gain is:

Input range(V)

=

——-±—-5—V——-total gain

a. Configure the first-stage gain selection.
Use jumpers W3, W19, W29, and W41 to configure the first-stage gain of channels 0 through 3, respectively. Each jumper has four possible positions–A, B, C, and D–each corresponding to a particular gain.

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b. Configure the second-stage gain.
Use jumpers W4, W20, W30, and W42 to configure the second-stage gain of channels 0 through 3, respectively. Each of these jumpers has five possible positions–A, B, C, D, and E–each corresponding to a particular gain.

The jumper settings and corresponding gain values are listed in Tables 3-9 and 3-10.

Table 3-9. SCXI-1121 First-Stage and Second-Stage Gain Jumper Configuration

Input Channel Number 0 1 2 3

First-Stage Gain Jumper W3 W19 W29 W41

Second-Stage Gain Jumper W4 W20 W30 W42

Table 3-10. SCXI-1121 Gain Jumper Configuration

Gain

Setting

Jumper Position

First-stage

1

D

10

C

50

B

100

A (factory setting)

Second-stage

1

A

2

B

5

C

10

D (factory setting)

20

E

2. Configure the filtering.
The filtering is also two-stage and is jumper-selectable for each channel. The SCXI-1121 uses a two-stage filtering configuration to achieve a higher signal- to-noise ratio. Filter bandwidth does not affect the maximum scanning rate. The factory-default jumper positions configures each channel for 4 Hz bandwidth.

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a. Configure the first-stage filtering.
Jumpers W5, W21, W31, and W43 select the first-stage filtering. Each of these jumpers has two positions–A and B. Position A selects the first stage of 4 Hz filtering, whereas position B selects the first stage of 10 kHz filtering.
b. Configure the second-stage filtering.
Jumpers W6 through W13 select the second-stage filtering, which you must configure for the same frequency as that of the first stage. There are actually only four jumpers, as in the first stage; W6 through W13 correspond to eight positions, rather than eight jumpers. You can set each jumper to one of two positions. Setting the jumper to an even number (for example, W6) selects the second stage of 4 Hz filtering, whereas setting the jumper to an odd number (for example, W7) sets the second stage of the same channel to 10 kHz filtering. Refer to Table 3-11 for the jumper and channel correspondence for filtering.

Table 3-11. SCXI-1121 First-Stage and Second-Stage Filter Jumper Configuration

Input Channel Number
0
1

First-Filter Jumper

4 Hz (Factory-Default)

10 kHz

W5-A

W5-B

W21-A

W21-B

Second-Filter Jumper

4 Hz (Factory-Default)

10 kHz

W6

W7

W8

W9

2

W31-A

W31-B

W10

W11

3

W43-A

W43-B

W12

W13

3. Configure the excitation mode as current or voltage.
You can configure each SCXI-1121 excitation channel to produce voltage or current excitation. Strain gauges require voltage excitation, whereas RTDs and thermistors typically require current excitation. Each excitation channel has two jumpers to select the appropriate mode–W14, W15, W22, W23, W34, W35, W46, and W47. Table 3-12 summarizes the excitation mode jumper settings. Notice that only position 1 is marked on the SCXI-1121 module. The factory-default excitation mode for each channel is voltage.

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Jumpers
W14 W15

Table 3-12. SCXI-1121 Excitation Mode Jumper Configuration

Excitation

Voltage Mode

Channel (Factory-Default Position)

Current Mode

0

W14

W15

W14

W15

123

123

123

123

W22 W23

1

W22

W23

W22

W23

123

123

123

123

W34 W35

2

W34

W35

W34

W35

123

123

123

123

W46 W47

3

W46

W47

W46

W47

123

123

123

123

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4. Configure the excitation level. You can select the level of excitation applied to each excitation channel, again using two jumpers per channel–W16, W24, W25, W26, W36, W37, W48, and W49. If you select voltage mode, you can apply a potential difference of either 3.333 V or 10.00 V. If you select current mode, you can apply an excitation current of either 0.150 mA or 0.450 mA. Refer to the transducer specifications to determine the necessary excitation level. See Table 3-13 for the SCXI-1121 excitation level jumper settings, and refer to Table 3-14 for the maximum load per excitation channel.

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Jumpers
W16 W26

Table 3-13. SCXI-1121 Excitation Level Jumper Configuration

Excitation

3.333 V or 0.150 mA

Channel (Factory-Default Position)

10 V or 0.450 mA

0

W26

W26

W16

1

2

123 3

W16

1

2

123 3

W24 W25

1

W24

W25

W24

W25

123

123

123

123

W36 W37

2

W36

W37

W36

W37

123

123

123

123

W48 W49

3

W48

W49

W48

W49

123

123

123

123

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Table 3-14. SCXI-1121 Maximum Load per Excitation Channel

Excitation Level

Maximum Load

3.333 V

28 mA

10 V 0.150 mA 0.450 mA

14 mA 10 k 10 k

5. Enable the half-bridge completion network, if necessary.
The SCXI-1121 includes a built-in half-bridge completion network to use with half-bridge or quarter-bridge transducers. The network includes two 4.5 k (±0.05%) resistors, connected in series, with a temperature coefficient of 5 ppm/°C. You can enable the network on an individual channel basis using two additional jumpers per channel–W1, W2, W17, W18, W27, W28, W39, and W40. When you enable the completion network, you automatically remove access to the negative input of the amplifier to preserve overvoltage protection. See Table 3-15 for half-bridge completion network jumper information, and refer to Figures 4-5, 4-6, and 4-7 for diagrams of standard bridge configurations.

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Table 3-15. SCXI-1121 Half-Bridge Completion Network Jumper Configuration

Jumpers

Channel

Enable Network

Disable Network (Factory-Default Position)

0

W1

W2

W2

W2

AB
W1 123

AB
W1 123

1
W17 W18

W18

W18

AB

123

W17

AB

123

W17

2
W27 W28

W28

W28

AB

123

W27

AB

123

W27

3
W39 W40

W40

W40

AB

123

W39

AB

123

W39

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6. Configure the amplifier output referencing.
The signal output referencing is relevant only if you connect the SCXI-1121 module directly to a DAQ device.
Use jumper W33 to configure the various output referencing modes of the SCXI-1121 amplifier. The correct output referencing mode depends on the input mode of the DAQ device you use.
Table 3-16 shows the three possible signal referencing configurations.

Table 3-16. SCXI-1121 Amplifier Output Referencing Jumper Configuration

Jumper
W33

Description
A-R0R1–Parking position. Use this setting for MIO or AI devices in DIFF input mode (factory-default position).

Configuration
A B R2 R1 R0

AB-R2–Select this position for AI and MIO devices in NRSE mode.
AB-R0–Connects the amplifier reference to data acquisition analog ground, pins 1 and 2 of the rear signal connector. Use this position for DAQ devices with SE inputs, such as the Lab and 1200 devices, or MIO and AI devices in RSE mode.

A B R2 R1 R0
A B R2 R1 R0

7. If you are using any digital SCXI modules in serial mode and will connect the SCXI-1121 module to the plug-in DAQ device, configure the SCXI-1121 module to connect the MISO signal to the SERDATOUT pin (jumper W38).
SCXI-1122 Module
This module has 16 isolated input channels and two isolated excitation channels. The SCXI-1122 is a module for signal conditioning of strain gauges, RTDs, thermistors, thermocouples, volt and millivolt sources, 4 to 20 mA current sources, and 0 to 20 mA process-current sources. The SCXI-1122 can operate in two modes. Use the two-wire scan mode with all 16 input channels used for input or the four-wire scan mode with the eight upper channels configured as sense leads for connecting input channels and

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the lower eight channels configured as current output channels. Other major features of this module include software-programmable gain and filtering, and the ability to account for voltage drop of long lead wires in strain-gauge measurement. The SCXI-1122 input signals are multiplexed to a single output, which drives a single DAQ device channel.
The SCXI-1122 has two jumpers. Jumper W2 connects a pullup resistor to the SERDATOUT signal on the rear signal connector as shown in Table 3-17. Jumper W1 configures the guard and the analog output ground and enables the NRSE mode. Filter bandwidth and scanning mode, both two-wire or four-wire, is software configured.
Use the following procedure to configure your SCXI-1122 module.

Note If the module is not connected to a DAQ device, the position of W2 is irrelevant.

Jumper
W2

1. When using a single chassis, set jumper W2 in position 1 on the SCXI-1122 that is connected to the DAQ device. When using multiple chassis, set jumper W2 to position 1 on only one of the SCXI-1122s that are cabled to the DAQ device. It does not matter which of the SCXI-1122s cabled to the DAQ device has the pullup connected. Set jumper W2 in position 3 on all of the other SCXI-1122 modules.

Table 3-17. SCXI-1122 Digital Signal Jumper Configurations

Description

Configuration

W2

1

Position 1 (pullup)–Use this setting for a single-chassis system. Connects a 2.2 k pullup resistor to the SERDATOUT line (factory-default position).
Position 3 (unmarked position, no pullup)–Use this setting for additional cabled SCXI-1122 modules in a multichassis system. No pullup resistor is connected to the SERDATOUT line.

W2

1

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Jumper

2. The SCXI-1122 has one analog configuration jumper for grounding, shielding, and reference mode selection. Set jumper W1 as shown in Table 3-18.

Table 3-18. SCXI-1122 Analog Jumper Configuration

Description
A-R0R1–Parking position. Use this setting for MIO or AI devices in DIFF input mode (factory-default position).

Configuration
B A
R0 R1 R2

W1

W1

AB-R0– Use this position for DAQ devices

W1

with SE inputs, such as the Lab and 1200

devices, or MIO and AI devices in RSE

mode.

B A
R0 R1 R2

Current-Loop Receivers
The SCXI-1122 includes provision for measuring current rather than voltage. National Instruments offers an SCXI process-current resistor pack, which consists of four 249 , 0.1%, 5 ppm, 1/4 W resistors. For more information on how to install current loop receiver resistors, consult your SCXI-1122 User Manual.
Scanning Techniques
Note The SCXI-1122 input multiplexer is composed of relays. Relays have a certain life expectancy, as listed in Appendix A, Specifications, of the SCXI-1122 User Manual.
To avoid mechanical wear on the relays when the SCXI-1122 is used for continuous multichannel scanning, you should acquire n samples on a given channel before proceeding to the next channel, as shown in Figure 3-3b. For example, rather than performing 100 scans and taking a single sample from each channel during each scan, as shown in Figure 3-3a, acquire 100 samples from a channel then switch to the next channel and acquire a new set of samples, as shown in Figure 3-3b. The recommended method, software-driven scanning, saves relay life.

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Scanned 100 times

CH0 (one sample) CH1 (one sample)

CH2 (one sample)

CH3 (one sample)

No 100 Scans Done?

Yes

Average the samples for each channel

a. Not Recommended

b.

CH0 x 100 samples
CH1 x 100 samples
CH2 x 100 samples
CH3 x 100 samples
Average the samples for each channel b. Software-Driven Scanning
b. Saves Relay Life.

Figure 3-3. Scanning Techniques
SCXI-1124 Module
The SCXI-1124 has six isolated DACs with voltage or current outputs. The SCXI-1124 outputs are designed to generate DC or slowly-varying current or voltage signals, not waveforms.
The SCXI-1124 works with National Instruments AI and MIO devices, Lab and 1200 devices, and DIO devices. You can control several SCXI-1124s in a single chassis with one DAQ device and in combination with other SCXI module types.
Note If nothing is connected to the SCXI-1124 rear signal connector, the position of all of the jumpers is irrelevant.

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Jumper

If you cable this SCXI-1124 directly to a plug-in DAQ device, then use the following procedure to configure your SCXI-1124:
1. Set jumper W1 for a single chassis or multichassis system, as shown in Table 3-19.

Table 3-19. SCXI-1124 Chassis Jumper Configuration

Description
Pullup–Use this setting for a single-chassis system. Connects a 2.2 k pullup resistor to the SERDATOUT line (factory-default position).

Configuration
W1 P

W1

NP

No Pullup–Use this setting for additional cabled SCXI-1124 modules in a multichassis system. No pullup resistor is connected to the SERDATOUT line (parking position).

W1 P
NP

2. If you are cabling this module directly to a DAQ device, set jumpers W1, W2, and W3 depending on the type of DAQ device you are using, as shown in Table 3-20.

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Table 3-20. SCXI-1124 Device-Type Jumper Configuration

Jumper

Description

Configuration

W2 W3 W4

D–Use this setting for all three jumpers if you want to connect the SCXI-1124 to a DIO device (factory-default position).
M–Use this setting for all three jumpers if you want to connect the SCXI-1124 to an MIO or Lab/1200 device.

W2 D M

W3

D

D

M

M

W4

W2 D M

W3

D

D

M

M

W4

You can connect two types of DAQ devices to the SCXI-1124–DIO devices and MIO devices. If you want to connect the SCXI-1124 to an MIO device, place jumpers W2, W3, W4 in the M position. If you are using an SCXI-1124 as well as modules with analog inputs, you should cable the MIO device to one of the analog input modules. The SCXI-1124 cannot route analog signals from the SCXIbus to the MIO device.
SCXI-1125 Module
The SCXI-1125 module is exactly like the SCXI-1120/D with the exception that it is software configurable and does not have any jumpers. Use Measurement & Automation Explorer to configure the gain and filter settings for each channel. In addition, the SCXI-1125 only has support for the MTEMP configuration of the terminal block onboard temperature sensor.

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SCXI-1126 Module
The SCXI-1126 is a signal conditioning module with eight isolated frequency input channels. Each channel of the SCXI-1126 includes a frequency to voltage conversion circuit with programmable input range, threshold, hysteresis, and filtering. Each channel is individually isolated with a working common-mode voltage of 250 Vrms between channels or channel to earth ground. The SCXI-1126 is software configurable and contains no jumpers.
SCXI-1140 Module
This module is an 8-channel simultaneously sampling differential amplifier. The SCXI-1140 has an instrumentation amplifier that can track and hold on all eight channels, an analog input range of ±10 V, and individual DIP-switch- selectable channel gains of 1, 10, 100, 200, and 500.
DAQ Device Connections in Multiple-Module Systems
Note If you use an SCXI-1140 in a system that contains multiple SCXI modules and one DAQ device, you must connect the SCXI-1140 to the DAQ device because the SCXI-1140 requires a counter/timer signal from the DAQ device to control the module track-and-hold circuitry. Other modules do not use this signal and thus do not route the signal to the SCXIbus.
If your system contains more than one SCXI-1140, the system operates correctly only when you have connected one of the SCXI-1140 modules to the DAQ device. Additional SCXI-1140 modules in the chassis can access the counter/timer signal using that module and the SCXIbus backplane. Other SCXI modules in the same chassis operate normally.
User-Configurable Jumpers and DIP Switches
This module has 10 user-configurable jumpers and eight DIP switches. You can use the jumpers and switches to configure input signal referencing, instrumentation amplifier output referencing, grounding, shielding, and gain. Leave all other jumpers in their factory-default positions.
The SCXI-1140 is factory-configured for use with an AI or MIO device in DIFF mode measuring ground-referenced signal sources–each module channel is configured for a gain of 1. If this configuration is suitable for your application, do not adjust any of the jumpers or DIP switches.

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However, you must adjust the configuration if any of the following conditions is true:
· Your input signals are floating or nonreferenced.
· You are cabling this SCXI-1140 directly to a DAQ device and you are using a Lab/1200 device, or you are using an MIO or AI device in SE mode.
· You require a gain other than 1 on any channel.
· You are using digital modules and are cabling the SCXI-1140 to a DAQ device.

Read the rest of this section on the SCXI-1140 module if any of these conditions applies to you.

Use the following procedure to configure your SCXI-1140 module:
1. Configure the signal referencing modes. Table 3-21 lists the SCXI-1140 signal referencing configurations.

Table 3-21. SCXI-1140 Signal Referencing Jumper Configuration

Jumpers

Description

W1-W2 W3-W6 W7-W8

AB–Connects the instrumentation amplifier negative input to the front panel connector only (factory-default position). Use this setting to measure ground- referenced source signals.

BC–Connects instrumentation amplifier negative input to the front panel connector and to module analog ground through a 100 k resistor (for floating sources). Use this setting to measure floating signals with this channel.

Configuration
ABC
ABC

2. Configure the instrumentation amplifier output referencing mode.
The output referencing mode is relevant only if this SCXI-1140 is connected directly to a plug-in DAQ device. Table 3-22 lists the SCXI-1140 instrumentation amplifier signal referencing configurations.

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Table 3-22. SCXI-1140 Instrumentation Amplifier Jumper Configuration

Jumper

Description

Configuration

AB–Use this setting for MIO or AI devices in

W9

DIFF mode (factory-default position).

A

B C

BC–Use this position for DAQ devices with SE

inputs such as the Lab and 1200 devices, or MIO

A

and AI devices in RSE mode.
B

C

Jumper W12 selects various grounding and shielding options. The factory- default position, CD, leaves the grounds disconnected and is suitable for most applications. For more information, refer to the SCXI-1140 User Manual.
3. Configure the gain selection.
Use the eight 4-bit DIP switches, U12 through U19, to select the gains of channels 0 through 7, respectively, as shown in Table 3-23. The factory- default position sets the gain to 1; that is, all four bits of each DIP switch are set to the off position (number side up). Select other gains by setting one or more of the four bits of a particular DIP switch to the on (closed) position as indicated in Table 3-24.

Table 3-23. SCXI-1140 Gain Switches for Each Channel

Channel

Use DIP Switch

0

U12

1

U13

2

U14

3

U15

4

U16

5

U17

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Table 3-23. SCXI-1140 Gain Switches for Each Channel (Continued)

Channel

Use DIP Switch

6

U18

7

U19

Table 3-24. SCXI-1140 Switch Settings for Gain Selection

Switch

Desired Gain

1

ABCD

10

1 23 4

100

200

500

OFF

Closed Switches
None D C B A

Switch is shown in factory-default (gain = 1) position.

4. If you are using any digital SCXI modules in serial mode and will connect the SCXI-1140 module to the DAQ device, configure the SCXI-1140 module to connect the MISO signal to the SERDATOUT pin (jumper W11). See the SCXI-1140 User Manual for details.
SCXI-1141, SCXI-1142, and SCXI-1143 Modules
The SCXI-1141, SCXI-1142, and SCXI-1143 have eight lowpass filters with differential input amplifiers. The filter types of the modules are elliptic, Bessel, and Butterworth, respectively. You can use the SCXI-1141, SCXI-1142, and SCXI-1143 for antialiasing applications as well as for general-purpose amplification and filtering of signals.
The SCXI-1141, SCXI-1142, and SCXI-1143 have two user-configurable jumpers. Jumper W1 is set at the factory for a single-chassis system, and jumper W2 is set at the factory for a differential input DAQ device.
Note You need to change the SCXI-1141/1142/1143 jumper configuration only if or when you are using a multichassis system, when using a DAQ device in SE mode, or to change the default grounding and shielding configuration.

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Jumper W1, when set to position P, connects a 2.2 k pullup resistor to the SERDATOUT line. An open-collector driver drives the SERDATOUT line. An open- collector driver either actively drives low or goes to a high-impedance state, relying on a pullup resistor to make the signal line go high. If too many pullup resistors are attached to the SERDATOUT line, the drivers cannot drive the line low. To prevent this, set jumper W1 to position P on only one of the SCXI-1141/1142/1143 modules that are connected to the DAQ device in a multiple chassis system. It does not matter which of the SCXI-1141/1142/1143 modules that are cabled to the DAQ device has the pullup connected.

Tables 3-25 and 3-26 list the description and configuration of the configurable jumpers.

Table 3-25. SCXI-1141/1142/1143 Chassis Jumper Configuration

Jumper
W1

Description
Pullup–Use this position for a cabled module in a single-chassis system or the first chassis in a multichassis system (factory-default position).

Configuration
W1 NP
P

No Pullup–Use this position for cabled modules in additional chassis in a multichassis system.

W1 NP

P

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Table 3-26. SCXI-1141/1142/1143 Grounding and Shielding Jumper Configuration

Jumper

Description

Configuration

Parking position. Use this setting with DAQ W2 devices in DIFF mode (factory- default
position).

W2

B A R2 R1 R0

Use this position for DAQ devices with SE inputs, such as the Lab and 1200 devices, DAQCard-700, or MIO and AI devices in RSE mode.

W2

B A R2 R1 R0

Connects the SCXIbus guard to the analog reference.

W2

B A R2 R1 R0

Select this position for MIO and AI devices in NRSE mode.

W2

B A R2 R1 R0

SCXI-1520 Module
The SCXI-1520 is an 8-channel module used to interface with strain gauges and strain-gauge-based sensors.
You can set the bridge excitation voltage, hardware null setting, filter cutoff frequency, or shunt calibration settings on a per-channel basis through software control. You can set the gain of each input channel through LabVIEW or NI-DAQ. An onboard EEPROM contains gain and offset calibration constants for each channel. NI-DAQ and LabVIEW automatically use these constants to correct for amplifier gain and offset errors when scaling data.

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You can use direct function calls to NI-DAQ to configure and calibrate the SCXI-1520 as well as scale data acquired through the SCXI-1520. Table 3-27 lists these functions and describes their use.

Table 3-27. NI-DAQ Functions Applicable to the SCXI-1520

Function SCXI_Set_Gain SCXI_Set_Excitation SCXI_Configure_Filter SCXI_Strain_Null SCXI_Calibrate_Setup SCXI_Configure_Connection SCXI_Calibrate

Action
Sets the analog input gain within the allowable range of X1 to X1000.
Sets bridge excitation voltage. Range is from 0 to 10 V in 0.625 V steps.
Sets filter cutoff frequency to one of five settings: 10 Hz, 100 Hz, 1 kHz, 10 kHz, or bypass.
Automatically zero-nulls the sensor-induced offset voltage of the specified channel.
Enables or disables shunt calibration on a per channel basis.
Sets the bridge configuration to quarter, half, or full bridge.
Initiates a module self-calibration. Updates the gain and offset constants stored in the EEPROM of the module. These constants are used by the scaling function SCXI_Scale.

The SCXI-1314 terminal block provides a convenient method of connecting field wiring from strain gauges and strain-gauge based sensors to the front signal connector of the SCXI-1520. The terminal block includes a socketed quarter- bridge completion resistor and two socketed shunt calibration resistors for each channel.
SCXI-1530/1531 Module
The SCXI-1530 and SCXI-1531 are four- and eight-channel modules, respectively, used for interfacing with Integrated Circuit Piezoelectric (ICP®) and other current-excited accelerometers. They have BNC connectors for direct connection to accelerometer cables. You can turn the 4 mA current excitation on or off. You can set the bandwidth of the four-pole Bessel filter to 2.5, 5, 10, or 20 kHz. You can set the gain to 1, 10, or 100X. All channels are simultaneously sampled and held to preserve timing and phase information. Excitation, bandwidth, and gain are set

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on a per-channel basis without using jumpers. You configure the SCXI-1530/1531 using Measurement & Automation Explorer or through function calls to NI-DAQ.
SCXI-1540 Module
The SCXI-1540 module is an eight-channel module for interfacing to industry- standard LVDTs, RVDTs, and resolvers. It can accommodate a 4-wire or 5-wire connection to an LVDT, and it allows you to synchronize any number of channels to a common frequency. You can set the excitation level at 1 Vrms or 3 Vrms. You can set the excitation frequency at 2.5, 3.3, 5, or 10 kHz. You can set the gain over the range 0.8X to 25X to handle a wide range of LVDT sensitivities. Gain, level, frequency, and wire mode are set on a per-channel basis without the use of jumpers. You configure the SCXI-1540 using Measurement & Automation Explorer or through function calls to NI-DAQ.
Digital SCXI Modules
In addition to analog SCXI modules, National Instruments produces a variety of digital modules–the SCXI-1160, SCXI-1161, SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R. You can connect these modules to either an analog or a digital DAQ device. The digital modules can work with analog modules in the same chassis.
When you are working with both analog and digital modules, you must use an analog DAQ device because it can accept both analog and digital signals. You must also connect an analog module to the analog DAQ device because an analog module can transfer both analog and digital signals from the SCXIbus to the DAQ device.
The following sections describe each digital SCXI module and contain step-by- step instructions for configuring the jumpers on each module. Find the section about the module you want to configure. Check the position of each jumper and read the jumper position description. Change the appropriate jumpers to configure the module for your application.

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Communication Modes
This section describes the serial and parallel communication modes.
Serial Mode
You can use any digital SCXI module in serial mode, in which you use a maximum of five digital lines to serially transfer data to and from the DAQ device. Either an analog or digital DAQ device can operate in serial mode, but an analog device works only in serial mode. Also, if you want to control a number of modules using any one DAQ device, you must configure all your digital modules for serial mode. The software configuration utilities use the multiplexed operating mode selection for digital modules to specify serial mode.
Parallel Mode
The SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R modules can work in parallel mode, in which you can use either 24 or 32 parallel lines to transfer data to or from a digital DAQ device. You must connect a module configured for parallel mode directly to a digital DAQ device. In parallel mode, you can use only one module per digital DAQ device; you must connect any other modules in the chassis, in either parallel or serial mode, to a different DAQ device. The only exception to this rule is the DIO-96/PnP, which can work with two digital modules in parallel mode or one module in parallel mode and any number in serial mode. If you connect a digital module to the second half (pins 51 through 100) of the NB5 cable connected to the DIO-96/PnP, you must select Parallel or Secondary operating mode in the Configuration window. No analog DAQ devices except the MIO-16D devices work with digital modules in parallel mode.
Note On the MIO-16D, the cable breaks out the 100-pin male I/O connector to two 50-pin female connectors. One 50-pin connector is equivalent to the MIO-16 I/O connector; the other 50-pin connector is equivalent to the DIO-24 I/O connector.
If you want to use your digital modules in serial mode, connect one module to the MIO-16-equivalent half of the NB5 cable and use the MIO-16D as an analog device.
If you want to use parallel mode with the SCXI-1162 or SCXI-1163, connect the SCXI module to the PC-DIO-24-equivalent half of the cable and use the MIO-16D as a digital device. If you use the DIO-24-equivalent half of the cable, you must select the parallel (secondary) operating mode in Measurement & Automation Explorer.

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SCXI-1160 Module
This module controls 16 isolated SPDT relays. The module has three user- configurable jumpers for configuring the type of DAQ device connected to your module. Leave all other jumpers in the factory-default positions.
The SCXI-1160 module is shipped configured for use with a DIO device.

Note If you are not connecting the SCXI-1160 module directly to a DAQ device, you do not need to change any jumper settings.

If you are connecting the SCXI-1160 directly to a DAQ device, set jumpers W2, W3, and W4 according to whether the module is connected to an analog device or a DIO device as shown in Table 3-28.

Table 3-28. SCXI-1160 Device-Type Configuration

Jumper

Description

Configuration

MIO

DIO–Use this setting to connect the SCXI-1160 to a DIO device (factory-default position).

DIO

MIO

DIO

W2

W3

W4

MIO

DIO

MIO

W2 W3 W4

MIO–Use this setting if you connect your SCXI-1160 to an AI or MIO device, or a Lab/1200 device.

DIO

MIO

DIO

W2

W3

W4

MIO

DIO

SCXI-1161 Module
The SCXI-1161 module controls eight SPDT relays. The module has three user- configurable jumpers for configuring the type of DAQ device connected to your module. Leave all other jumpers in the factory-default positions.
The SCXI-1161 module is shipped configured for use with a DIO device.
Note If you are not connecting the SCXI-1161 module directly to a DAQ device, you do not need to change any jumper settings.

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Jumper
W3 W4
W5

If you are connecting the SCXI-1161 directly to a DAQ device, set jumpers W3, W4, and W5 according to whether the module is connected to an analog device or a DIO device as shown in Table 3-29.

Table 3-29. SCXI-1161 Device-Type Configuration

MIO

Description
DIO–Use this setting to connect the SCXI-1161 to a DIO device (factory-default position).

DIO

Configuration

DIO

MIO

DIO

MIO

W3

W4

W5

MIO

MIO–Use this setting if you

DIO

MIO

DIO

MIO

DIO

connect your SCXI-1160 to an

W3

W4

W5

AI or MIO device or Lab /1200

device.

SCXI-1162 Module
This module has 32 optically-isolated digital input channels. Major features include 450 Vrms isolation, 1,900 Vrms breakdown, TTL and CMOS compatibility, and high-speed parallel data transfer to digital DAQ devices. The module has four user-configurable jumpers for configuring the operating mode and the type of DAQ device connected to your module. Leave all other jumpers in the factory-default positions.
The SCXI-1162 module is shipped configured for use with a DIO device in serial mode.
Note You need to adjust jumpers on this module only if you connect the module directly to an analog DAQ device or use the module in parallel mode. If either of these conditions applies to you, read the rest of this section.

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Use the following procedure to configure your SCXI-1162 module:
1. Select parallel or serial mode.
Use jumper W2 to select whether the module transfers data in parallel to a digital DAQ device (or the DIO-24 connector of an MIO-16D device) or serially to either a digital or an analog DAQ device. For more information see Table 3-30. If you use parallel mode, you must also set the number of parallel lines using jumper W1.

Table 3-30. SCXI-1162 Communication Mode Configuration

Jumper
W2 W6

Description
SER–Use this setting to configure the rear connector for serial communication (factory-default position).

Configuration
W2 SER
PAR

PAR–Use this setting to configure the rear connector for parallel

W2

communication.

SER

W6

MIO

DIO

PAR PAR

2. Select 24 or 32 lines.
If jumper W2 is set to parallel mode, you can use jumper W1 to select whether the module transfers 24 or 32 parallel lines of data to the device. If you are using a DIO-24 or the digital connector (pins 51 through 100) of an MIO-16D, you must select 24 lines. If you are using a DIO-32 or a DIO-96/PnP, select 32 lines. If you are using an analog DAQ device, set jumper W2 to the serial position, which makes the position of W1 irrelevant. For more information see Table 3-31.

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Jumper
W1

Table 3-31. SCXI-1162 Parallel Lines Jumper Configuration
Description
24–Use this setting to drive only 24 rear connector data lines when W2 is set to PAR (factory-default position).

Configuration
24 32

32–Use this setting to drive all 32 rear connector

data lines when W2 is set to PAR.

24

32

3. Select your device type–either analog or digital.
If this module is connected directly to a DAQ device, jumpers W3, W4, and W6 specify to which type of device the module is connected. Set jumpers W3, W4, and W6 to the DIO position if the module is connected to a DIO-24, DIO-32, or DIO-96/PnP device. Set the jumpers to the MIO position if the module is connected to an AI or MIO device or Lab/1200 device. If you are using the SCXI-1162 in parallel mode, set jumper W6 to the PAR position. If the module is not connected directly to a DAQ device, the positions of W3, W4, and W6 are irrelevant.

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DIO

Jumper
W3 W4
W6

Table 3-32 shows the SCXI-1162 device-type jumper configurations.

Table 3-32. SCXI-1162 Device-Type Jumper Configuration

Description

Configuration

MIO–Use this setting to

configure the rear connector

W6

DIO

DIO

MIO

for an AI or MIO device or

Lab/1200 device in serial

W3

W4

mode (factory-default

MIO

MIO

position).

PAR

DIO–Use this setting to

configure rear connector for

W6

DIO

DIO

a DIO device in serial mode.

W3

W4

MIO

MIO

MIO

PAR

DIO

SCXI-1162HV Module
The SCXI-1162HV module consists of 32 optically-isolated, wide range, AC or DC digital inputs. The SCXI-1162HV is a module used for sensing the presence of AC or DC voltages.
To configure the SCXI-1162HV module, use the six user-configurable jumpers (W2­W7). (Jumper W1 is a reserved jumper and should remain unconnected.)
Note If you are controlling the SCXI-1162HV through the SCXIbus and are not connecting a DAQ device directly to the rear connector of the SCXI-1162HV, the positions of these jumpers are irrelevant.
Jumper W3, when set to position P, connects a 2.2 k pullup resistor to the SERDATOUT line. An open-collector driver either actively drives low or goes to a high-impedance state, relying on a pullup resistor to make the signal line go high. If too many pullup resistors are attached to the SERDATOUT line, the drivers cannot drive the line low. To prevent this, set jumper W3 to position P on only one of the SCXI-1162HV modules cabled to the DAQ device in a multichassis system. It does not matter which of the SCXI-1162HV modules cabled to the DAQ device has the pullup connected.

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Jumper
W5

Table 3-33 lists the description and configuration of the user-configurable jumpers.

Table 3-33. SCXI-1162HV Jumper Configuration

Description
24–Use this setting to drive only 24 lines when W2 is set to PAR and you are using a DIO-24 or an MIO-16D device (factory-default position).

32

Configuration

24

24

32

32–Use this setting to drive all 32 rear connector data lines when W2 is set to PAR and you are using a DIO-32 or DIO-96/PnP device.

S–Use this setting to configure the rear connector for

W6

serial communication (factory-default position).

S

P

S

P

P–Use this setting to configure the rear connector for parallel communication. Use with DIO devices only.
DIO–Use this setting to configure the rear connector for W7 a DIO device (factory-default position).

MIO

DIO

MIO

DIO

MIO–Use this setting to configure the rear connector for an MIO device. Includes AI or MIO device or Lab/1200 device.
DIO–Use this setting to configure the rear connector for W4 a DIO device (factory-default position).

DIO

MIO

DIO

MIO

MIO–Use this setting to configure the rear connector for an MIO device. Includes AI or MIO device or Lab/1200 device.

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Jumper
W3
W2

Table 3-33. SCXI-1162HV Jumper Configuration (Continued)
Description
Pullup–Use this setting for a single-chassis system or for the first chassis in a multichassis system. Connects a pullup resistor to the SERDATOUT line (factory-default position).
No Pullup–Use this setting for additional chassis in a multichassis system. No pullup resistor is connected to the SERDATOUT line.

NP

NP

Configuration

P

P

DIO–Use this setting to configure SERDATOUT for

DIO devices (factory-default position).

PAR

MIO

DIO

MIO

MIO–Use this setting to configure SERDATOUT for

MIO device. Includes AI or MIO device or Lab/1200

PAR

device.

DIO

PAR–Use this setting to disconnect SERDATOUT line.

PAR

Use for parallel mode.

MIO

DIO

SCXI-1163 Module
This module is a 32-channel optically isolated digital output module with TTL and CMOS compatibility, 450 Vrms isolation and 1,900 Vrms breakdown, and high- speed parallel data transmission from digital DAQ devices. The module has five user-configurable jumpers for configuring the operating mode and the type of DAQ device connected to your module. Leave all other jumpers in the factory- default positions.
The SCXI-1163 module is shipped configured for use with a DIO device in serial mode.

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Note You need to adjust jumpers on this module only if you plan to connect the module directly to an analog DAQ device or if you want to use the module in parallel mode. If either of these conditions applies to you, read the rest of this section.

Jumper

Use the following procedure to configure your SCXI-1163 module:
1. Select your device type–either analog or digital.
If the module is connected to a DIO device, set jumpers W2 and W3 to the DIO position, as shown in Table 3-34. If the module is connected to an analog device, set W2 and W3 to the MIO position. If the module is not cabled directly to a DAQ device, the positions of W2 and W3 are irrelevant.
Table 3-34 shows the SCXI-1163 device-type jumper configurations.

Table 3-34. SCXI-1163 Device-Type Jumper Configuration

Description
DIO–Use this setting to configure the rear connector for a DIO device in serial mode (factory-default position).

Configuration

W2 DIO

W3 DIO

W2 W3

MIO–Use this setting to configure the rear connector for an AI or MIO or Lab/1200 device.

MIO
W2 DIO

MIO
W3 DIO

MIO

MIO

2. Select serial or parallel mode.
If you are using the module in parallel mode, set jumper W6 to the P position and jumper W5 to the PAR position. For serial mode, set W6 to the S position and jumper W5 to the MIO or DIO position, depending on the type of DAQ device to which the module is connected. If you are using the module in parallel mode, it must be directly connected to a digital DAQ device or the DIO-24 connector of an MIO-16D.

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Jumper

Table 3-35 shows the SCXI-1163 mode jumper configurations.

Table 3-35. SCXI-1163 Mode Jumper Configuration

Description
S–Use this setting to configure the module in serial mode (factory-default position).

Configuration
W6 S

W6 W5

P–Use this setting to configure the rear connector for a DIO device in parallel mode.

P
W6 S

P

DIO–Use this setting to configure the module in

serial mode (factory-default position).

W5

MIO

DIO

PAR

PAR–Use this setting to configure the rear

connector for a DIO device in parallel mode.

W5

MIO

DIO

PAR

MIO–Use this setting to configure the rear

connector for an MIO device.

W5

MIO

DIO

PAR

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SCXI-1163R Module
The SCXI-1163R is an SCXI module consisting of 32 optically-isolated solid- state relays. The SCXI-1163R module switches loads up to 240 Vrms or VDC and 200 mA.
The SCXI-1163R operates in serial mode with MIO and AI devices, Lab/1200 devices, and DIO devices. You can control several SCXI-1163R modules in serial mode in a single chassis with one DAQ device. Alternatively, you can control 24 of the solid-state relays in parallel mode with a DIO-24, or all 32 solid- state relays in parallel mode with a DIO-32 or DIO-96/PnP.
Note You should change the jumper configuration from the factory-default settings only if you plan to connect the SCXI-1163R directly to an MIO and AI device, or if you plan to use the SCXI-1163R in parallel mode.

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Jumper
W2

Tables 3-36 and 3-37 show the SCXI-1163R jumper configurations.

Table 3-36. SCXI-1163R Device-T

References

• Test and Measurement Systems, a part of Emerson - NI
• Test and Measurement Systems, a part of Emerson - NI
• Support - NI
• SCXI-2000 National Instruments Chassis | Apex Waves

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