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Summary of Contents for National Instruments 1191
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Page 1: User Manual
SCXI ™ SCXI-1190/1191/1192 User Manual SCXI-1190/1191/1192 User Manual February 2001 Edition Part Number 322610B-01... - Page 2 Sweden 08 587 895 00, Switzerland 056 200 51 51, Taiwan 02 2528 7227, United Kingdom 01635 523545 For further support information, see the Technical Support Resources appendix. To comment on the documentation, send e-mail to techpubs@ni.com © Copyright 2000, 2001 National Instruments Corporation. All rights reserved.
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Page 3: Important Information
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. - Page 4 Classification requirements are the same for the Federal Communications Commission (FCC) and the Canadian Department of Communications (DOC). Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate the equipment under the FCC Rules.
- Page 5 Canadian Department of Communications This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. European Union - Compliance to EEC Directives Readers in the EU/EEC/EEA must refer to the Manufacturer's Declaration of Conformity (DoC) for information** pertaining to the CE Mark compliance scheme.
- Page 6 Bold text in this font denotes the messages and responses that the computer monospace bold automatically prints to the screen. This font also emphasizes lines of code that are different from the other examples. SCXI-119X Refers to the SCXI-1190 module, the SCXI-1191 module, and the SCXI-1192 module.
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Page 7: Table Of Contents
Removing the SCXI-119X from MAX...1-14 Chapter 2 Using the SCXI-119X Functional Overview...2-1 RF Switching Precautions...2-3 Contact Protection...2-4 Connecting Signals ...2-5 Multiplexing to RF Sources...2-6 Expanding the RF Multiplexer ...2-8 Appendix A Specifications Appendix B Common Questions © National Instruments Corporation SCXI-1190/1191/1192 User Manual... - Page 8 Contents Appendix C Technical Support Resources Glossary Index SCXI-1190/1191/1192 User Manual viii ni.com...
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Page 9: Installing And Configuring The Scxi-119X
For the SCXI-1190, the maximum rated voltage of the switch is 24 V, and the maximum rated current is 1 A at 24 V. For the SCXI-1191, the maximum rated voltage of the switch is 30 V, and the maximum rated current is 0.33 A at 30 V. -
Page 10: Installing The Software
When installing NI-SWITCH, look at the Development Environments panel. • If you click the Advanced button on this panel, you can custom install National Instruments drivers such as NI-DAQ, NI-IVI, and NI-VISA. • If you do not want to install certain drivers, click Advanced and uncheck the driver(s) you do not want installed. -
Page 11: Safety Instructions
Do not substitute parts or modify equipment. Because of the danger of introducing additional hazards, do not install unauthorized parts or modify the instrument. Return the instrument to National Instruments for service and repair to ensure that its safety is not compromised. -
Page 12: Unpacking
Never touch the exposed pins of connectors. Caution Remove the module from the package and inspect the module for loose components or any sign of damage. Notify National Instruments if the module appears damaged in any way. Do not install a damaged module into your computer. - Page 13 4 Slot 4 Caution Do not insert the SCXI-119X module into a chassis that is powered on because doing so could damage the module. © National Instruments Corporation Chapter 1 ® 5 SCXI Chassis (SCXI-1000 Shown) 6 SCXI Chassis Power Switch...
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Page 14: Connecting The Scxi-119X To A Daq Device Or Computer-Based Instrument
SCXI-119X Module into an SCXI Chassis information.) SCXI cable assembly, which consists of a cable adapter and a cable An installed National Instruments DAQ device or computer-based instrument, such as the NI 4060, that is able to control the SCXI chassis 1/4 in. - Page 15 To connect the chassis to a DAQ device, complete the following steps while referring to Figure 1-2: ® 1 SCXI Chassis Power Switch 2 Cable Adapter © National Instruments Corporation Chapter 1 3 Cable 4 DAQ Device or Computer-Based Instrument Figure 1-2. Connecting an SCXI Chassis to a DAQ Device...
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Page 16: Connecting The Scxi-119X To A Daq Device In A Pxi Combination Chassis
Installing the Software PXI combination chassis with the SCXI modules installed National Instruments PXI MIO DAQ device, or a computer-based instrument that is capable of controlling SCXI, installed in the right most slot of the PXI section of the combination chassis Installing the Software section. -
Page 17: Configuring And Self-Testing The Scxi-119X
National Instruments device. Make sure you have your chassis powered on. Note © National Instruments Corporation Chapter 1 Double-click the Measurement & Automation Explorer icon on your desktop. To add a new chassis, right-click Devices and Interfaces and select Create New. -
Page 18: Manually Adding Modules
To remove a module or chassis, right-click on the chassis or module you want to remove and select Delete. To test the chassis configuration, right-click on the chassis and select Test. SCXI-1190/1191/1192 User Manual Expand Devices and Interfaces. You can see the chassis selected in the list. -
Page 19: Self-Test Verification
Troubleshooting Self-Test Verification section. Additionally, you may find it helpful to refer to your NI-SWITCH documentation, your ADE software documentation, and your chassis documentation. National Instruments documentation is available to download free at ni.com/manuals Troubleshooting Self-Test Verification... - Page 20 Make sure the cable between the SCXI chassis and DAQ device or computer-based instrument is properly connected. Inspect the cable and the connectors for any bent pins. Make sure you are using the correct National Instruments cable assembly. Test your DAQ device or computer-based instrument to verify it is working properly.
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Page 21: Removing The Scxi-119X
To remove the SCXI-119X module from an SCXI chassis, complete the following steps while referring to Figure 1-3: 1 SCXI Chassis Power Switch 2 SCXI Chassis (SCXI-1000 Shown) © National Instruments Corporation Chapter 1 ® 3 SCXI-119X (SCXI-1190 Shown) 4 SCXI Module Thumbscrews Figure 1-3. -
Page 22: Removing The Scxi-119X From Measurement & Automation Explorer
Your SCXI chassis and/or SCXI module(s) should now be removed from the list of installed devices in MAX. SCXI-1190/1191/1192 User Manual Turn off the SCXI chassis power. Remove all signals connected to the SCXI-119X. -
Page 23: Using The Scxi-119X
The SCXI-1190 uses single-pole double-throw, high-bandwidth relays capable of switching signals from DC to 1.3 GHz. Functionally identical, the SCXI-1191 has a bandwidth of DC to 4 GHz. The SCXI-1192 module is a general-purpose, 8-channel, high-bandwidth relay module; it uses single-pole double-throw, high-bandwidth relays capable of switching signals from DC to 18 GHz. - Page 24 Chapter 2 Using the SCXI-119X Figure 2-1 illustrates the key functional components of the SCXI-1190/1191 multiplexer modules. comA comB SCXI-1190/1191/1192 User Manual Rear Signal SCXIbus Connector Relay Controller Drivers Relay Control Bus comC Figure 2-1. SCXI-1190/1191 Modules Block Diagram comD ni.com...
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Page 25: Rf Switching Precautions
DC for the SCXI-1191, or 30 V that exceed the maximum voltage for the SCXI-119X can result in an electrical shock hazard and damage to the switch module and any or all of the modules connected to the © National Instruments Corporation... -
Page 26: Contact Protection
Chapter 2 Using the SCXI-119X SCXI backplane. National Instruments is not liable for any damages or injuries resulting from exceeding maximum voltage ratings. Refer to Appendix A, Specifications, for specific information. Caution Always disconnect all signals from the front connectors and power off the SCXI chassis before removing the SCXI-119X from the chassis. -
Page 27: Connecting Signals
The power-up and reset state of the different multiplexer banks on the SCXI-1190/1191 are as follows: banks A and C, channel 0 is connected to the COM terminal; banks B and D, channel 3 is connected is connected to the COM terminal. The reset mode of the SCXI-1192 connects NC to COM for all relays. -
Page 28: Multiplexing To Rf Sources
Chapter 2 Using the SCXI-119X Multiplexing to RF Sources Figure 2-4 shows how to use the SCXI-1190/1191 to select one of four RF sources to be routed to a RF measurement device. RF Source RF Source RF Source RF Source... - Page 29 Figure 2-5 shows how to use the SCXI-1192 to route signals from two RF sources to one RF measurement device. RF Source RF Source © National Instruments Corporation Chapter 2 NATIONAL INSTRUMENTS RF Measurement Device • Scope • Spectrum Analyzer •...
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Page 30: Expanding The Rf Multiplexer
Using the SCXI-119X Expanding the RF Multiplexer Figure 2-6 shows how to expand the SCXI-1190/1191 by cascading stages together. In the specific case of Figure 2-6, the module is used to create a 13-to-1 multiplexer with a two-stage architecture. You can cascade several modules to provide even larger multiplexers. - Page 31 B Switch 1 Instrument Switch 0 Switch 2 Switch 5 Instrument Switch 4 Switch 6 © National Instruments Corporation Source 1 Source 2 Switch 3 Switch 7 Figure 2-7. Expanding the SCXI-1192 Chapter 2 Using the SCXI-119X Source 3...
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Page 32: Input Characteristics
Specifications This appendix lists the specifications for the SCXI-1190, the SCXI-1191, and the SCXI-1192 multiplexer modules. These specifications are typical at 25 °C unless otherwise noted. SCXI-1190 Input Characteristics Number of banks... 4 Number of channels per bank ... 4... -
Page 33: Dynamic Characteristics
Refer to the cautions and warning in Chapter 2, information about using your SCXI-1190 with high-power signals. Dynamic Characteristics Relay operate time (at 20 °C) Relay release time (at 20 °C) SCXI-1190/1191/1192 User Manual ) ...50 Ω ≤100 MHz...<0.4 dB ≤500 MHz...<0.9 dB ≤1.3 GHz ...<1.5 dB ≤2 GHz ...<3 dB... -
Page 34: Electromagnetic Compatibility
To obtain the DoC for this product, click Declaration of Conformity at the DoCs by product family. Select the appropriate product family, followed by your © National Instruments Corporation Mechanical (no load) ... 5 × 10 Electrical at maximum switching capacity... - Page 35 Installation category II Pollution degree 2 Certifications and Compliances CE Mark Compliance See the Declaration of Conformity sheet accompanying product. Category II refers to local-level power distribution, such as that provided by a standard wall outlet. SCXI-1190/1191/1192 User Manual ni.com...
- Page 36 Contact material ... Gold RF Performance Characteristics Characteristic impedance (Z Insertion loss at: VSWR at: © National Instruments Corporation Channel to earth ... 30 V AC ... 30 V DC ... 30 VDC AC ... 0.33 A DC ... 0.33 ADC at 30 VDC )...
- Page 37 Maximum RF carry power at 900 MHz ...10 W Note Refer to the warning and cautions in Chapter 2, information about using your SCXI-1191 with high-power signals. Dynamic Characteristics Relay operate time (at 20 °C) Relay release time (at 20 °C)
- Page 38 CE Mark Compliance See the Declaration of Conformity sheet accompanying product. Category II refers to local-level power distribution, such as that provided by a standard wall outlet. © National Instruments Corporation Appendix A (Class A) Compliant FCC Part 15A above 1 GHz A1:1998, Table 1 http://www.ni.com/hardref.nsf/...
- Page 39 Contact on resistance (initial) ...100 mΩ max Contact material...Gold plate RF Performance Characteristics Characteristic impedance (Z Insertion loss at: VSWR at: SCXI-1190/1191/1192 User Manual Channel to earth...30 V DC...30 VDC DC...2 A 1–3 GHz...120 W 3–8 GHz...80 W 8–12.4 GHz...60 W 12.4–18 GHz...50 W...
- Page 40 +5 VDC Physical Dimensions... 17.30 by 19.56 by 3.02 cm I/O connector... 3 SMA female per relay © National Instruments Corporation 8 to 12.4 GHz... ≤1.35 12.4 to 18 GHz... ≤1.5 ≤1 GHz... ≤–85 dB 1 to 4 GHz... ≤–80 dB 4 to 8 GHz...
- Page 41 C22.2 No. 1010.1 for electrical measuring and test equipment. Installation category II Pollution degree 2 Category II refers to local-level power distribution, such as that provided by a standard wall outlet. SCXI-1190/1191/1192 User Manual (Class A) Compliant FCC Part 15A above 1 GHz A1:1998, Table 1 http://www.ni.com/hardref.nsf/...
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Page 42: Common Questions
One of my modules doesn’t switch properly anymore. What’s wrong? One of the relays may have worn out. Relays are mechanical devices and have a limited switching lifetime. Call National Instruments for information on replacing your relays. © National Instruments Corporation Verify that the switches do not switch by trying to close and open the switches. - Page 43 10 mVp-p will be seen on the adjacent channel (in addition to the signal already on the channel). Higher channel-to-channel isolation results in lower crosstalk. SCXI-1190/1191/1192 User Manual is a measure of the amount of crosstalk between channels in a ni.com...
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Page 44: Technical Support Resources
Technical Support Resources Web Support National Instruments Web support is your first stop for help in solving installation, configuration, and application problems and questions. Online problem-solving and diagnostic resources include frequently asked questions, knowledge bases, product-specific troubleshooting wizards, manuals, drivers, software updates, and more. Web support is available... -
Page 45: Worldwide Support
Appendix C Technical Support Resources Worldwide Support National Instruments has offices located around the world to help address your support needs. You can access our branch office Web sites from the Worldwide Offices section of up-to-date contact information, support phone numbers, e-mail addresses, and current events. - Page 46 LabWindows/CVI, Visual Basic, and C or C++ amperes, root-mean-square Celsius channel pin or wire lead on the switch to which you apply or from which you read the analog or digital signal. Signals can be single-ended or differential. © National Instruments Corporation Value –9...
- Page 47 See digital multimeter drivers/driver software software that controls a specific hardware device such as a switch card hertz—the number of scans read or updates written per second isolation a measure of the amount of cross-talk between channels...
- Page 48 NI-SWITCH an IVI-based instrument driver that supports the National Instruments line of switch cards PCI with eXtensions for Instrumentation radio frequency relay a switch that connects or disconnects the signal to a common through the physical movement of a metal arm root mean square—the square root of the average value of the square of the...
- Page 49 Glossary volts, root-mean-square VSWR Voltage Standing Wave Ratio watts SCXI-1190/1191/1192 User Manual ni.com...
- Page 50 RF sources, 2-6 to 2-7 SMA and SMB connectors (figure), 2-5 contact protection, 2-4 conventions used in manual, vi customer education, C-1 © National Instruments Corporation DAQ device. See connecting SCXI-119X to DAQ device. dynamic characteristics SCXI-1190, A-2 to A-3...
- Page 51 Explorer, 1-14 from SCXI chassis, 1-13 to 1-14 RF multiplexer, expanding, 2-8 to 2-9 RF performance characteristics SCXI-1190, A-2 SCXI-1191, A-5 to A-6 SCXI-1192, A-8 to A-9 RF sources multiplexing to, 2-6 to 2-7 RF switching precautions, 2-3 to 2-4...
- Page 52 A-8 to A-9 safety, A-10 system integration, by National Instruments, technical support resources, C-1 to C-2 troubleshooting common problems, B-1 to B-2 Voltage Standing Wave Ratio (VSWR), B-2 Web support from National Instruments, C-1 Worldwide technical support, C-2 SCXI-1190/1191/1192 User Manual Index...
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