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SCXI ™ SCXI-1190/1191 User Manual SCXI-1190/1191 User Manual February 2000 Edition Part Number 3226 10A-01.
Worldwide Technical Support and Product Info rmation www.ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 794 0100 Worldwide Office.
Important Information Warranty The SCXI-1190 and SCX I-1191 are warranted against defects in material s and workmanship for a peri od of one year from the date of shipment, as evidenced by receipts or other documentation.
Compliance FCC/Canada Radio Frequency Interference Compliance* Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless communications from interference.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV te chnician for help. Canadian Department of Communications This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Conventions The following con ventions are used in this manual: This icon denotes a note, which alerts you to important information. This icon denotes a caution, which advises you of precautions to take to av oid injury , data loss, or a system crash.
© National Instruments Corporation vii SCXI-1190/1191 User Manual Contents Chapter 1 Installing and Configuring the SCXI-119 X About the SCXI-119 X ...................... .............. .......................... ......................... ...........
Contents SCXI-1190/1191 User Manual viii www.ni.com Appendix C Technical Support Resources Glossary Index Figures Figure 1-1. Installing the SCXI-119 X into an SCXI Chassis ...................... ............ 1-3 Figure 1-2. Connecting an SCXI Chassis to a DAQ Device or Computer-Based Instrument .
© National Instruments Corporation 1-1 SCXI-1190/1191 User Manual 1 Installing and Configuring the SCXI-119 X This manual describes the electrical and mechanical characteristics of the SCXI-1190 (quad 1 × 4, 50 Ω , 1.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-2 www .ni.com 2. Install the NI-SWITCH software that came on a CD with your SCXI-119 X . The CD includes the software required to conf igure and to program your SCXI-119 X module.
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-3 SCXI-1190/1191 User Manual Installing the SCXI-119 X Module into an SCXI Chassis You need the following items.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-4 www .ni.com 4. Insert the SCXI-119 X module into slot 1. Gently guide the module in to the module guides and push it to th e back of the slot until the connectors make good contact.
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-5 SCXI-1190/1191 User Manual T o connect the chassis to a D A Q de vice for multiplexed operation, complete the following steps while referring to Figure 1-2: 1.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-6 www .ni.com Figure 1-2. Connecting an SCXI Chassis to a DAQ Device or Computer -Based Instrument Connecting the SCXI-1.
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-7 SCXI-1190/1191 User Manual Y ou should hav e already installed your SCXI-1 19 X module and any other SCXI modules in the chassis according to their installation instructions.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-8 www .ni.com Y ou no w hav e the choice of automatically detecting which modules are installed in the chassis or manu ally adding them. • If you hav e just added the chassis to Devices and Interfaces , you can automatically detect new modules.
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-9 SCXI-1190/1191 User Manual Note If the Measurement & Automation Explorer recognized an y module as an SCXI custom module, you may be using an old version of NI-D A Q , the data acquisition driv er software.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-10 ww w .ni.com Y our SCXI chassis and SCXI modu l e(s) should n o w be con f igured properl y .
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-11 SCXI-1190/1191 User Manual c. Click the + next to your SCXI chassis to sho w all the SCXI modules. d. Right-click on the module that is connected to your D A Q device or computer -based instrument and select Properties .
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-12 www .ni.com Removing the SCXI-119 X This section describes how to remove the SCXI-119 X from an SCXI chassis. Removing the SCXI-119 X from an SCXI Chassis Make sure you read and understand all the safety information in this manual before you remove an SCXI module.
Chapter 1 Installing and Configuring the SCXI-119X © National Instruments Corporation 1-13 SCXI-1190/1191 User Manual Figure 1-3. Removin g the SCXI-119 X Removing the SCXI-119 X from Measurement & Automation Explorer To remove a module from Measurement & Automation Explorer, complete the following steps: 1.
Chapter 1 Installing and Configuring the SCXI-119X SCXI-1190/1191 User Manual 1-14 www .ni.com Note Deleting an SCXI chassis deletes all modules in the chassis.
© National Instruments Corporation 2-1 SCXI-1190/1191 User Manual 2 Using the SCXI-119 X This chapter contains a functional overview, safety instructions, and connection possibiliti es of the SCXI-119 X multiplex er module. Functional Over view The SCXI-119 X modules are gene ral-purpose, quad 4-channel, high-bandwidth multiplexing switches.
Chapter 2 Using the SCXI-119X SCXI-1190/1191 User Manual 2-2 www .ni.com Figure 2-1. SCXI-119 X Module Block Diagram Safety Instructions Cautions Do not operate damag ed equipment. The safety protection features built into this instrument can become impaired if th e instrument becomes dama ged in any w ay .
Chapter 2 Using the SCXI-119X © National Instruments Corporation 2-3 SCXI-1190/1191 User Manual Connections that exceed an y of the maximum signal ratings on the SCXI-119 X can create a shock or fire hazard or can damage an y or all of the de vices connected to the SCXI-119 X .
Chapter 2 Using the SCXI-119X SCXI-1190/1191 User Manual 2-4 www .ni.com Connecting Signals The SCXI-1190 has pu sh -on SMB connectors, and the SCXI-1191 has screw-on SMA connectors as shown in Figure 2-2.
Chapter 2 Using the SCXI-119X © National Instruments Corporation 2-5 SCXI-1190/1191 User Manual Multiplexing to RF Sources Figure 2 -3 shows how to use the SCXI-119 X to select one of four RF sources to be routed to a RF measurement device. Figure 2-3.
Chapter 2 Using the SCXI-119X SCXI-1190/1191 User Manual 2-6 www .ni.com Expanding the RF Multiplexer Figure 2-4 shows how to expand t he SCXI-119 X by cascading stages together. In the specific case of Figure 2-4, the module is used to create a 13 to 1 multiplexer with a two-stage architecture.
© National Instruments Corporation A-1 SCXI-1190/1191 User Manual A Specifications This appendix lists the specif ications for the SCXI-1190 and the SCXI-1191 multiplex er modules. These specif ications are typical at 25 ° C unless otherwise noted. SCXI-1190 Input Characteristics Number of relays per bank .
Appendix A Specifications for SCXI-1190 SCXI-1190/1191 User Manual A-2 www.ni.com RF Performance Characteristics Characteristic impedance (Z 0 ) ................50 Ω Insertion loss at: ≤ 100 MHz ................. .......................<0.4 dB ≤ 500 MHz .
Appendix A Specifications for SCXI-1190 © National Instruments Corporation A-3 SCXI-1190/1191 User Manual Caution Exceeding the maximum switching capability will decrease the e x pected life of the SCXI-1190. Power Requirement +5 VDC Maximum (all relays closed) .
Appendix A Specifications for SCXI-1191 SCXI-1190/1191 User Manual A-4 www.ni.com SCXI-1191 Input Characteristics Number of relays per bank ............... ......3 Number of banks .................. .............. .... 4 Common-mode voltage Channel to earth .
Appendix A Specifications for SCXI-1191 © National Instruments Corporation A-5 SCXI-1190/1191 User Manual Note Refer to the warning and cautions in Chapter 2, Using the SCXI-119X , for important information about using your SCXI-1191 with high-power signals.
Appendix A Specifications for SCXI-1191 SCXI-1190/1191 User Manual A-6 www.ni.com Certifications and Compliances CE Mark Compliance See the Declaration of Conformity sheet accompanying product.
© National Instruments Corporation B-1 SCXI-1190/1191 User Manual B Common Questions This appendix addresses common questions you may hav e while using your SCXI-119 X mult ipl ex er module.
Appendix B Common Question s SCXI-1190/1191 User Manual B-2 www.ni.com One of my modules doesn’t switch properly anymore. What’ s wr ong ? One of the relays has probably worn out. Relays are mechanical de vices and hav e a lim ited swit ching lifetime.
© National Instruments Corporation C-1 SCXI-1190/1191 User Manual C T echnical Support Resources This appendix describes the comprehensiv e resources av ailab le to yo u in the T echnical Support sec.
Appendix C T echnical Support Resources SCXI-1190/1191 User Manual C-2 www.ni.com Software-Related Resources • Instrument Driver Network —A library with hundreds of in strument dri v ers for contro l of standalone instruments via GPIB, VXI, or serial interfaces.
© National Instruments Corporation G-1 SCXI-1190/1191 User Manual Glossar y Pref ix Meanings V alue n- nano- 10 –9 m- milli- 10 –3 M- mega- 10 6 G- giga- 10 9 Symbols ° degrees Ω ohms % percen.
Glossary SCXI-1190/1191 User Manual G-2 www .ni.com dB decibel DC direct current de vice a plug-in board, card, or pad that can contain multiple channels and co n v ers ion d e vi ces . Some examples of devices are computers, multimeters, multiplexers, oscillators, operator interfaces, and counters.
Glossary © National Instruments Corporation G-3 SCXI-1190/1191 User Manual N NI-SWITCH an IVI-based instrumen t dri v er that supports the National Instruments line of switch cards O oz ounce P PXI P.
Glossary SCXI-1190/1191 User Manual G-4 www .ni.com V V volts VDC v olts, direct current VSWR V oltage Standing W av e Ratio W Ww a t t s.
© National Instruments Corporation I-1 SCXI-1190/1191 User Manual Index A auto-detection of modules, 1-8 to 1-9 B block diagram of SCXI-119 X, 2-2 C certifications and compliances SCXI-1190, A-3 SCXI.
Index SCXI-1190/1191 User Manual I-2 www .ni.com troubleshooting, 1-10 to 1-11 multiplexed operation with DAQ device, 1-5 multiplexer, expanding, 2-6 multiplexing to RF sources, 2-5 N National Instrum.
Index © National Instruments Corporation I-3 SCXI-1190/1191 User Manual SCXI-1191, A-4 to A-5 certifications and compliances, A-5 dynamic characteristics, A-5 environment, A-5 input characteristics, .
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