National Instruments NI 2590/2591 User's Manual
Contents
1. ss 2 8 Appendix A Specifications Appendix B Servicing Your Module National Instruments Corporation vii NI 2590 2591 User Manual Contents Appendix C Common Questions Appendix D Technical Support Resources Glossary Index NI 2590 2591 User Manual viii ni com Routing Signals with Your NI 2590 2591 This manual describes the electrical and mechanical characteristics of the NI 2590 a 1 x 4 50 Q 1 3 GHz multiplexer module and the NI 2591 a 1 x 4 50 Q 4 0 GHz multiplexer module for the PXI bus It contains information concerning their installation and operation About the NI 2590 2591 Triggers This section summarizes the features and operation of the NI 2590 2591 switch module refer to Chapter 2 NJ 2590 2591 Operation for more complete details In addition refer to Appendix A Specifications for detailed specifications of the switch module The NI 2590 2591 are general purpose 4 channel high bandwidth multiplexing switches The NI 2590 uses single pole double throw high bandwidth relays capable of switching signals from DC to 1 3 GHz The characteristic impedance of the channels is 50 Q The maximum rated voltage of the switch is 24 VDC and the maximum rated current is 1 ADC The NI 2591 uses a self contained relay module consisting of three high bandwidth relays capable of switching signals from DC to 4 GHz The characteristic impedance of the channels is 50 Q The maxim2. Dynamic Characteristics Relay operate time at 20 C LY PICA iia 15 ms Relay release time at 20 C A E 15 ms Expected life Mechanical no load 5 x 10 operations Electrical at maximum switching capacity sses 10 operations A Caution Exceeding the maximum switching capability will decrease the expected life of the NI 2590 2591 PXI Bus Interface Slave NI 2590 2591 User Manual A 2 ni com Appendix Specifications for NI 2590 PXI Trigger Bus Tagger nes tits 8 St r riS A EA 1 Power Requirement 5 VDC Minimum all relays opened 350 mA Maximum all relays closed 0 6A Physical DIMENSIONS 10 by 16 by 4 cm 3 9 by 6 3 by 1 6 in Weight Sacchi aired iia tes 240 g 8 5 oz PO connector 5 SMB female Environment Operating temperature 0 to 50 C Storage temperature 20 to 70 C Relative humidity eee eee 5 to 85 noncondensing Maximum altitude 2 000 m Certifications and Compliances CE Mark Compliance C See the Declaration of Conformity sheet accompanying product National Instruments Corporation A 3 NI 2590 2591 User Manual Appendix Specifications for NI 2591 NI 2591 Input Characteristics Number of relays 3 Common mode voltage Channel to earth 30 Vms or DC Maximum switching voltage D S disent ane 30 VDC at 0 33 ADC ACA ane tre nu 30 Vms at
3. 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 The Manufacturer includes a DoC for most every hardware product except for those bought for OEMs if also available from an original manufacturer that also markets in the EU or where compliance is not required as for electrically benign apparatus or cables Certain exemptions may apply in the USA see FCC Rules 15 103 Exempted devices and 15 105 c Also available in sections of CFR 47 The CE Mark Declaration of Conformity will contain important supplementary information and instructions for the user or installer Conventions lt gt Ez A AX italic monospace The following conventions are used in this manual Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name for example DBIO lt 3 0 gt 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 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 Text in this
4. 0 33 Arms Maximum switching power per channel 10 W Contact on resistance initial 200 mQ max Contact material Gold RF Performance Characteristics Characteristic impedance Zo ee 50 Q Insertion loss at lt 29 GHZ net lt 0 6 dB lt 4 GHZ ss lt 0 9 dB VSWR at ELO GHZ ida lt 1 3 LA GHZ ns han lt 1 5 Isolation LPS GA liada aaa lt 60 dB LA GHZ me ton lt 55 dB Maximum RF carry power at 900MHZ cicna eii 10 W NI 2590 2591 User Manual A 4 ni com Appendix Specifications for NI 2591 B Note Refer to the safety information in Chapter 2 NI 2590 2591 Operation for important information about using your NI 2591 with high power signals Dynamic Characteristics Relay operate time at 20 C PY PiCall eiii ita 15 ms Relay release time at 20 C WY PICA eiii 15 ms Expected life Mechanical no load 5 x 106 operations Electrical at maximum switching capacity 10 operations UN Caution Exceeding the maximum switching capability will decrease the expected life of the NI 2591 Power Requirement 5 VDC Maximum all relays closed 250 mW Physical A ai 1 1 kg Dimensions 10 by 16 by 4 cm 3 9 by 6 3 by 1 6 in T O connector s ssssssssss 5 SMA female per bank Environment Operating temperature 0 to 50 C Storage temperature 20 to 70 C Relative humidity eee 5 to 85 noncondensing Na
5. 2590 2591 User Manual Appendix D 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 ni com Branch office Web sites provide up to date contact information support phone numbers e mail addresses and current events If you have searched the technical support resources on our Web site and still cannot find the answers you need contact your local office or National Instruments corporate Phone numbers for our worldwide offices are listed at the front of this manual NI 2590 2591 User Manual D 2 ni com Glossary Prefix Meaning Value p pico 10 12 n nano 10 2 u micro 10 6 m milli 10 3 M mega 106 G giga 10 Numbers and Symbols o Q AC ADC ANSI degrees ohms percent greater than less than amperes alternating current amperes direct current American National Standards Institute O National Instruments Corporation G 1 NI 2590 2591 User Manual Glossary breakpoint bus channel common contact bounce D DC debounced device diode drivers driver software E external trigger NI 2590 2591 User Manual a specified point in program code where the program pauses to perform some action a breakpoint interrupt can be added to a scan list for debugging
6. Operation Front Panel MUX0123 Scan Memory Triggers Saa PXI 99 Interface Relay Control PXIbus Connector Figure 2 1 NI 2590 Module Block Diagram National Instruments Corporation 2 3 NI 2590 2591 User Manual Chapter 2 NI 2590 2591 Operation Front Panel High Frequency Relay 4 GHz Relay Module Control Lines Scan Memory PXI Interface Triggers PXI Bus Connector Figure 2 2 NI 2591 Module Block Diagram NI 2590 2591 User Manual 2 4 ni com Chapter 2 NI 2590 2591 Operation Relay Operation NI 2590 Operation The NI 2590 has four channels CHO through CH3 any one of which can be connected to the single common channel COM by closing the appropriate relays You can control the relays individually or you can use higher level commands to energize the correct relays to connect a channel such as CH0 to COM Only one channel can be connected to the common channel at any time and it is not possible to connect one channel to another channel bypassing the common channel The NI 2590 relays are single side stable When power is removed from the relay coil the relay returns to its de energized state When all three relays are de energized the default connection is from CHO to COM as shown in Figure 2 1 To connect CH2 to COM you energize MUX0123 to connect CH3 to COM you ener
7. a state of the art user interface and uses the ANSI standard C programming language The LabWindows CVI NI SWITCH Library a series of functions for using LabWindows CVI with National Instruments switch hardware is included with the NI SWITCH driver National Instruments Corporation 1 5 NI 2590 2591 User Manual Chapter 1 Routing Signals with Your NI 2590 2591 Third Party Software The NI SWITCH instrument driver also includes support files for Microsoft Visual C and Microsoft Visual Basic See the NI SWITCH Software Readme File for version support information Cabling and Accessory Requirements National Instruments recommends the use of cables and accessories with 50 Q characteristic impedance with the NI 2590 2591 NI 2590 2591 User Manual 1 6 ni com NI 2590 2591 Operation This chapter contains safety instructions and a functional overview of the NI 2590 2591 switch modules It also explains the operation of each functional unit making up the switch module Safety Instructions A Cautions Do not operate damaged equipment The safety protection features built into this instrument can become impaired if the instrument becomes damaged in any way If the instrument is damaged do not use it until service trained personnel can check its safety If necessary return the instrument to National Instruments for service and repair to ensure that its safety is not compromised Do not operate this instrument in a manner tha
8. channels will be scanned the trigger generated by the switch module when scanning The trigger occurs after the switch module has closed a switch and the switch has settled switch control circuitry sub miniature snap on connector a graphical program included with NI Switch that you can use to interactively control the switch any event that causes or starts some form of data capture Transistor Transistor Logic G 4 ni com V V varistor VDC VI VSWR wire Glossary volts an electrical resistor whose resistance depends on the applied voltage volts direct current virtual instrument 1 a combination of hardware and or software elements typically used with a PC that has the functionality of a classic stand alone instrument 2 a LabVIEW software module VI which consists of a front panel user interface and a block diagram program Voltage Standing Wave Ratio The impedance match of the device to the overall system watts data path between nodes O National Instruments Corporation G 5 NI 2590 2591 User Manual Index block diagrams NI 2590 2 3 NI 2591 2 4 C cables and accessories 1 6 certification and compliances NI 2590 A 3 NI 2591 A 6 CH lt 0 3 gt signal table 1 4 COM signal table 1 4 common questions about NI 2590 2591 C 1 to C 2 connectors front connector NI 2590 figure 1 3 NI 2591 figure 1 4 overview 1 3 signal descriptions for front connectors table 1 4 co
9. measurement device Always configure the triggers in a system before configuring the measurement device or the NI 2590 2591 for scanning When triggers are configured a state change or pulse could occur on the trigger line This is also possible when you reset the switch module Multiboard Triggering NI 2590 2591 User Manual You can use multiple NI 2590 2591 switch modules or multiple other National Instruments switch modules such as the NI 2503 together in conjunction with an instrument such as a National Instruments oscilloscope digitizer In multiple switch module systems be sure to identify one switch module as the master switch module All other switch modules for the system are identified as slave switch modules The master switch module can route an external trigger from the front connector to a PXI backplane trigger In addition the master switch module can route the SCANADV trigger from the PXI backplane to either the front connector or another backplane trigger This functionality makes 2 8 ni com Chapter 2 NI 2590 2591 Operation it possible to wire external triggers from to only one switch module in the system which simplifies the wiring scheme 3 Note The NI 2590 2591 does not support triggers on the front panel connector If the trigger signal is external to the chassis you must use a different National Instruments switch module such as the NI 2503 as the master switch module For more information refer to
10. the NI SWITCH Software User Manual O National Instruments Corporation 2 9 NI 2590 2591 User Manual Specifications This appendix lists the specifications for the NI 2590 2591 switch module These specifications are typical at 25 C unless otherwise noted NI 2590 Input Characteristics Number of relays 3 Common mode voltage Channel to earth 24 VDC Maximum switching voltage DC ies ste etter ties ens 1 Aat24V Aida dosis 1 Ams at 24 V Maximum switching power per channel 24 W Contact on resistance initial 100 mQ max Contact material Gold clad silver RF Performance Characteristics Characteristic impedance Z9 50 Q Insertion loss at lt 100 MZ sais lt 0 4 dB lt 500 MHZ sms tune lt 0 9 dB SLI GHZ hh un ni lt 1 5 dB National Instruments Corporation A 1 NI 2590 2591 User Manual Appendix Specifications for NI 2590 VSWR at lt 100 MZ ms astees lt 1 15 lt S00 MHZ use lt 1 35 AD GHZ E os lt 1 5 Isolation lt I00MAZ sinus han lt 62 dB lt l3 GHZ suisse lt 50 dB Rise Lane dd lt 300 ps Signal Gelay cunda lt 3ns Maximum RF carry power AA age ninina 10 W 3 Note Refer to the cautions and warning in the RF Switching Precautions and Contact Protection sections of Chapter 1 Routing Signals with Your NI 2590 2591 for important information about using your NI 2590 2591 with high power signals
11. to protect wireless communications from interference The FCC places digital electronics into two classes These classes are known as Class A for use in industrial commercial locations only or Class B for use in residential or commercial locations Depending on where it is operated this product could be subject to restrictions in the FCC rules In Canada the Department of Communications DOC of Industry Canada regulates wireless interference in much the same way Digital electronics emit weak signals during normal operation that can affect radio television or other wireless products By examining the product you purchased you can determine the FCC Class and therefore which of the two FCC DOC Warnings apply in the following sections Some products may not be labeled at all for FCC if so the reader should then assume these are Class A devices FCC Class A products only display a simple warning statement of one paragraph in length regarding interference and undesired operation Most of our products are FCC Class A The FCC rules have restrictions regarding the locations where FCC Class A products can be operated FCC Class B products display either a FCC ID code starting with the letters EXN AAA or the FCC Class B compliance mark that appears as shown here on the right TG CoN FE with FCC Standards Consult the FCC web site http www fcc gov for more information FCC DOC Warnings This equipment generates and uses radio frequen
12. 7 to 2 8 random scanning 2 6 to 2 7 relay operation NI 2590 2 5 NI 2591 2 5 safety instructions 2 1 switch control circuitry 2 6 P parts locator diagram NI 2590 B 1 NI 2591 B 3 NI 2590 2591 User Manual 1 2 physical specifications NI 2590 A 3 NI 2591 A 5 power requirement specifications NI 2590 A 3 NI 2591 A 5 programming See NI Switch instrument driver software choices PXI interface 2 7 to 2 9 bus interface specifications A 2 initiating scanning 2 8 multiboard triggering 2 8 to 2 9 PXI triggers 2 7 to 2 8 external trigger input 1 2 2 7 modes of operation 2 8 overview 1 1 scanner advanced 1 1 2 7 trigger bus specifications A 3 Q questions about NI 2590 2591 C 1 to C 2 R random scanning 2 6 to 2 7 reflective switch 1 2 relay module replacing NI 2590 B 1 to B 2 NI 2591 B 2 to B 3 relay operation NI 2590 2 5 NI 2591 2 5 RF performance characteristics NI 2590 A 1 to A 2 NI 2591 A 4 to A 5 RF switching precautions 1 2 ni com S safety instructions 2 1 scanner advanced trigger modes of operation 2 8 overview 1 1 purpose and use 2 7 scanning common questions C 1 to C 2 initiating 2 8 random scanning 2 6 to 2 7 servicing the NI 2590 2591 B 1 to B 3 parts locator diagram NI 2590 B 1 NI 2591 B 3 replacing relay module NI 2590 B 1 to B 2 NI 2591 B 2 to B 3 signal descriptions for front connector table 1 4 software choices 1 5 to 1 6 Nation
13. Computer Based Instruments NI 2590 2591 User Manual Y NATIONAL November 2000 Edition gt INSTRUMENTS Part Number 322387B 01 Worldwide Technical Support and Product Information ni com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 794 0100 Worldwide Offices Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Brazil 011 284 5011 Canada Calgary 403 274 9391 Canada Ottawa 613 233 5949 Canada Qu bec 514 694 8521 China Shanghai 021 6555 7838 China ShenZhen 0755 3904939 Denmark 45 76 26 00 Finland 09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 280 7625 Netherlands 0348 433466 New Zealand 09 914 0488 Norway 32 27 73 00 Poland 0 22 528 94 06 Portugal 351 1 726 9011 Singapore 2265886 Spain 91 640 0085 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 techpubseni com O Copyright 1999 2000 National Instruments Corporation All rights reserved Important Information Warranty The NI 2590 and NI 2591 switch modules and accessories are warranted against defects in materials and workmanship for a
14. ONITORING 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 Compliance FCC Canada Radio Frequency Interference Compliance Determining FCC Class The Federal Communications Commission FCC has rules
15. abeled COM is connected in a through path to one of the other four connections depending on the software instructions sent to the switch NI 2590 Front Connector The following diagram shows the NI 2590 front connector Table 1 1 describes the connector signals JO Y NATIONAL D INSTRUMENTS 2590 1x4 1 3 GHz Mux 50 Q CHO CH1 COM CH2 CH3 Figure 1 1 NI 2590 Front Connector National Instruments Corporation 1 3 NI 2590 2591 User Manual Chapter 1 Routing Signals with Your NI 2590 2591 NI 2591 Front Connector The following diagram shows the NI 2591 front connector Table 1 1 describes the connector signals C O N NATIONAL 1 INSTRUMENTS 2591 1x4 4 GHz Mux o 50 ae 9000 Y YN Figure 1 2 NI 2591 Front Connector Table 1 1 Front Connector Signal Description Signal Name Type Description CH lt 0 3 gt Input Output Channels Where signals are connected to the switch module COM Input Output Common The common for the respective channel NI 2590 2591 User Manual 1 4 ni com Chapter 1 Routing Signals with Your NI 2590 2591 Software Choices You have several options to choose from when programming your National Instruments switch module You can use the NI SWITCH driver software or National Instruments application software NI SWITCH Driver Software The NI SWITCH ins
16. al Instruments application software 1 5 NI Switch instrument driver 1 5 third party software 1 6 specifications A 1 to A 6 certification and compliances NI 2590 A 3 NI 2591 A 6 dynamic characteristics NI 2590 A 2 NI 2591 A 5 environment NI 2590 A 3 NI 2591 A 5 to A 6 National Instruments Corporation 1 3 Index input characteristics NI 2590 A 1 NI 2591 A 4 physical NI 2590 A 3 NI 2591 A 5 power requirement NI 2590 A 3 NI 2591 A 5 PXI bus interface A 2 PXI trigger bus A 3 RF performance characteristics NI 2590 A 1 to A 2 NI 2591 A 4 to A 5 switch control circuitry 2 6 switches do not switch C 1 system integration by National Instruments D 1 T technical support resources D 1 to D 2 third party software 1 6 triggering multiboard 2 8 to 2 9 triggers See PXI triggers W Web support from National Instruments D 1 Worldwide technical support D 2 NI 2590 2591 User Manual
17. at riel brouilleur du Canada Class B Federal Communications Commission This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Canadian Department of Communications This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe B respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada European Union Compliance to EEC Directives
18. ccident 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 CVI IVI LabVIEW National Instruments ni com and PXI are trademarks of National Instruments Corporation 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 M
19. cond inches an advanced architecture for instrument drivers that includes features such as simulation and state caching input output the transfer of data to from a computer system involving communications channels operator interface devices and or data acquisition and control interfaces Industry Standard Architecture See Interchangeable Virtual Instrument an IVI based instrument driver that supports the National Instruments line of switch modules PCI with extensions for instrumentation NI 2590 2591 User Manual Glossary R random scanning reflective switch relay rms scan scan list scanner advanced trigger SCC SMB soft front panel T trigger TTL NI 2590 2591 User Manual scanning the channels in a mux in any order a switch architecture in which the unused channels are NOT terminated in the characteristic impedance of the system The unused channels are open circuits 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 instantaneous signal amplitude a measure of signal amplitude seconds the data acquisition of signals connected to multiple channels of a multiplexer Typically the measurement device uses a trigger to advance the multiplexer to the next channel in the scan a list of channels supplied to NI Switch that indicates the order in which
20. ctors on the front panel Remove the PXI ejector handle screw that secures the front panel Remove the module from the base card Install the replacement module and screws in reverse order taking care not to damage the connector pins on the module B 3 NI 2590 2591 User Manual Common Questions This appendix addresses common questions you may have while using your NI 2590 2591 switch module What should I do if the software detects the module but the switches do not switch Verify that the switches do not switch Close your application program and then launch the soft front panel as described in the Set up and Test document you received with your kit The soft front panel shows the state of each relay on the module Try closing and opening the switches Also be sure to check the return codes of the NI Switch operation to ensure that there are no errors negative value or warnings positive value You can also use the NI Spy utility to check for error codes Finally verify that your code is correct For reference see the examples described in the NI SWITCH Software User Manual The NI Switch driver also ships with several examples in source code Compare your algorithm to those in the examples What should I do if scanning does not work First ensure that you have configured the switch module and the instrument to match trigger lines The output trigger of the instrument should connect to the trigger input of the switch m
21. cy energy and if not installed and used in strict accordance with the instructions in this manual and the CE Mark Declaration of Conformity may cause interference to radio and television reception Classification requirements are the same for the Federal Communications Commission FCC and the Canadian Department of Communications DOC FOR HOME OR OFFICE USE Changes or modifications not expressly approved by National Instruments could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Canadian Department of Communications This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le m
22. dition 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 a
23. electrostatic discharge Remove the two Phillips head screws that fasten the NI 2590 relay module board to the module carrier Remove the hex nuts and washers from the SMB connectors on the front panel Gently disconnect the rear of the module from the header then carefully remove the module Install the replacement module and screws in reverse order taking care not to damage the connector pins on the module Replacing the NI 2591 Relay Module NI 2590 2591 User Manual The NI 2591 is constructed so that the relay module can be replaced when the relays fail The life of the relay is nominally 10 operations when switching the maximum rated load You can order an RF 2591 replacement relay module for your NI 2591 from National Instruments The replacement kit contains the fully assembled module B 2 ni com Appendix B Servicing Your Module 1 Hex Nuts and Washers 2 Relay Module 3 Base Card Figure B 2 RF 2591 Replacement Relay Module Follow these instructions to replace the failed module as shown in Figure B 2 1 National Instruments Corporation Ground yourself with a grounding strap or a ground connected to your PXI chassis Properly grounding yourself prevents damage to your PXI module from electrostatic discharge Remove the four Phillips head screws and nuts that fasten the NI 2591 relay module to the module carrier Remove the hex nuts and washers from the SMA conne
24. es for the NI 2590 2591 are 15 ms Using memory storage the software can send multiple commands to the SCC without having to wait for a relay action to complete The memory is used to store a scan list necessary for hardware random scanning Random Scanning NI 2590 2591 User Manual The NI 2590 2591 can perform random scanning In random scanning the switch module can open or close relays in any order The scan list is downloaded to onboard memory Commands in the scan list can perform the following actions e Open or close relays e Wait for an external trigger e Generate a scanner advanced trigger e Generate a breakpoint interrupt You can use the driver software to configure the switch module for continuous or one time scanning In continuous scanning the switch module cycles through the scan list until you disable scanning For one time scanning the switch module runs through the scan list only once You can also use software commands to clear the scan list or reset it to the beginning at any time The onboard control logic for the NI 2590 2591 switch module gives you direct access to open and close the relays and also the ability to download up to 1 024 random scanning instructions The software included with the module automatically configures the NI 2590 2591 and downloads the scan list to hardware for you The scan list itself downloads directly into the memory of the module to deliver the fastest scan possible wit
25. 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 Contents Chapter 1 Routing Signals with Your NI 2590 2591 Aboutithe NI2590 259 Trend re nina dt 1 1 WHS SETS init er dite tt gs ae aoe ee es 1 1 RES witching Precautions iii lune As ste ME En 1 2 Contact Prot ctlon iii s ii 1 2 Connecting Signals saene ras aa 1 3 NI 2590 Front Conn ctor isssssssssnsessmneneneninasnenenerenienenent 1 3 NI 2591 Front COMect ste rt is 1 4 Software CHOICES ini a 1 5 NI SWITCH Driver Software ss 1 5 National Instruments Application Software 1 5 Third Party Software Suma 1 6 Cabling and Accessory Requirements ss 1 6 Chapter 2 NI 2590 2591 Operation Safety IStrUCHOnS o sfa iia 2 1 Functional Overvie Wese sn ERE E ads E E E In 2 2 Relay Operations 8eme mens nnen ias 2 5 NI 2390 OperatiON iciornoinicia ionien i a e s 2 5 NL2591 OperatlON cintia 2 5 Switch Control O AAA O 2 6 Random CAMINO Petro ceva intel 2 6 PXI Interaccion aa 2 7 PALTA da re ia 2 7 External Trigger Input 2 7 Scanner Advanced it tn Me ene 2 7 Mods ren dites Bie set NBA ORS ns 2 8 IMANES Scamming diri 2 8 Multiboard Triggering
26. g and after removal of the module or when connecting and disconnecting signals on the front panel Warning Do not exceed the channel to ground voltage rating Any connections that exceed the maximum voltage for the NI 2590 2591 can result in an electrical shock hazard and damage to the switch module and any or all of the modules connected to the PXI backplane National Instruments is not liable for any damages or injuries resulting from exceeding maximum voltage ratings Refer to Appendix A Specifications for information Contact Protection A Caution The contacts of the relay are rated for a life of 5 x 106 mechanical operations when operated with no signal or a very small signal present At full rated power 1 A at 24 VDC for the NI 2590 and 0 33 A at 30 VDC for the NI 2591 the life of the switch is downgraded to 100 000 operations If your setup allows it is always best to turn off the input signals connected to the switch module during the switching operation to avoid contact arcing within the switch Switching large inductive loads can also cause contact arcing In such instances install a flyback diode or varistor across the inductance to protect the switch NI 2590 2591 User Manual 1 2 ni com Chapter 1 Routing Signals with Your NI 2590 2591 Connecting Signals The front of the NI 2590 module has five push on SMB connectors for signal connections The NI 2591 has five SMA female connectors The center connection l
27. gize MUX0123 and MUX23 You can specify the channel to connect to COM and let the NI Switch driver energize the appropriate relays for you Refer to the NI SWITCH Software User Manual for further information NI 2591 Operation The NI 2591 is very similar to the NI 2590 in some respects but different in others The NI 2591 has 4 channels CHO through CH3 any one of which can be connected to the single COM by closing the appropriate relays The NI 2591 does not allow for control of the individual relays You must use the high level commands to connect the channels such as CH2 to COM Only one channel can be connected to the common channel at any time and it is not possible to connect one channel to another channel bypassing the common channel The default power off connection of the NI 2591 is CH3 to COM Refer to Figure 2 2 to see how the connections in the NI 2591 are made National Instruments Corporation 2 5 NI 2590 2591 User Manual Chapter 2 NI 2590 2591 Operation Switch Control Circuitry The switch control circuitry SCC is responsible for opening and closing relays on the NI 2590 2591 You can load commands for the SCC into scan memory using the driver software you received with your kit Consult the online help or your software documentation for specific information on the appropriate commands There are two reasons for storing the commands in memory before the SCC can process them e Both the operate and release tim
28. h no controller 2 6 ni com Chapter 2 NI 2590 2591 Operation intervention You can configure the switch module to process the scan list once or to continuously loop through the scan list PXI Interface You can configure and control your NI 2590 2591 switch module through the PXI interface taking advantage of PXI features The NI 2590 2591 uses the PXI TTL triggers to synchronize scanning with a measurement device such as the NI 5102 PXD 20 MS s oscilloscope or the NI 5411 for PXI arbitrary waveform generator PXI Triggers External Trigger Input The NI 2590 2591 can use an external trigger input to advance between scan setups in a scan list Using the driver software you can configure the switch module to route the external trigger from any of the PXI TTL trigger lines or the PXI star trigger Alternatively you can use a software command to trigger the switch module All external trigger lines are compatible with TTL voltage levels and are edge sensitive The minimum pulse width from the PXI TTL triggers and PXI star trigger is 70 ns Scanner Advanced The NI 2590 2591 can generate a scanner advanced trigger to indicate when the switch module is set up and ready to take measurements Using the driver software you can configure the switch module to route the scanner advanced SCANADV trigger to any PXI TTL trigger line or to the PXI star trigger You can configure the switch module to generate the SCANADYV trigger when a re
29. lay has settled or debounced Because the NI 2590 2591 has open collector drivers on the PXI TTL trigger lines you can have multiple switch modules using the same trigger line in the multiboard SCANADV mode National Instruments Corporation 2 7 NI 2590 2591 User Manual Chapter 2 NI 2590 2591 Operation Modes SCANADV has two modes of operation In its default mode the SCANADYV trigger asserts for 1 us after the relay has debounced You can also configure the switch module for handshaking mode in which the SCANADYV trigger goes high after a relay settles and the SCANADV trigger goes low after the external trigger input asserts You can use this handshaking mode for multiboard scanning 3 Note The NI 2590 2591 ignores external triggers when it is not in a wait for trigger state while scanning Initiating Scanning When you use the NI 2590 2591 to initiate a scan make sure the measurement device is armed waiting for trigger before enabling scanning on the switch module Enabling scanning causes the first switch es in the scan list to close and generates a scanner advanced trigger after the relay switches have settled or debounced When you use the measurement device to initiate a scan make sure scanning is enabled on the NI 2590 2591 before the measurement device starts to take measurements This ensures that the switch module has the correct signal routed and that the switch module is waiting for an external trigger from the
30. ntact protection 1 2 conventions used in manual vi customer education D 1 D debouncing of switches 1 1 dynamic characteristics NI 2590 A 2 NI 2591 A 5 National Instruments Corporation E environment specifications NI 2590 A 3 NI 2591 A 5 to A 6 external trigger input 1 2 2 7 F front connector NI 2590 front connector figure 1 3 NI 2591 front connector figure 1 4 signal descriptions table 1 4 input characteristics NI 2590 A 1 NI 2591 A 4 L LabVIEW and LabWindows CVI software 1 5 maintaining the NI 2590 See servicing the NI 2590 2591 multiboard triggering 2 8 to 2 9 National Instruments application software 1 5 NI 2590 2591 switch module See also operation of NI 2590 2591 block diagrams 2 3 to 2 4 cabling and accessories 1 6 common questions C 1 to C 2 connecting signals 1 3 NI 2590 2591 User Manual Index contact protection 1 2 front connectors figures 1 3 to 1 4 overview 1 1 parts locator diagram NI 2590 B 1 NI 2591 B 3 replacing relay module NI 2590 B 1 to B 2 NI 2591 B 2 to B 3 RF switching precautions 1 2 servicing B 1 to B 3 software choices 1 5 to 1 6 triggers 1 1 to 1 2 NI Developer Zone D 1 NI Switch instrument driver 1 5 C 2 0 operation of NI 2590 2591 2 1 to 2 9 block diagrams NI 2590 2 3 NI 2591 2 4 functional overview 2 2 PXI interface 2 7 to 2 9 initiating scanning 2 8 multiboard triggering 2 8 to 2 9 PXI triggers 2
31. odule In addition the scanner advanced trigger of the switch module should be connected to the input trigger of the instrument If the switch module is used to initiate the scan make sure the scope or arb is Waiting for a trigger before enabling scanning on the switch module This 1s the recommended method for hardware scanning If the scope or arb is used to initiate the scan enable scanning on the switch module before configuring the scope or arb to start taking measurements Also be sure to check the return codes of the NI Switch operation to ensure that there are no errors negative value or warnings positive value You can also use the NI Spy utility to check for error codes National Instruments Corporation C 1 NI 2590 2591 User Manual Appendix C Common Questions Finally verify that your code is correct For reference see the examples described in the NI SWITCH Software User Manual The NI Switch driver also ships with several examples in source code Compare your algorithm to the ones in the examples Do I need to program the switch module myself The NI 2590 2591 comes with the NI Switch driver software which exports the full functionality of the module NI Switch handles the complex issues of direct memory access interrupts and operating system interfacing NI 2590 2591 User Manual C 2 ni com Technical Support Resources Web Support National Instruments Web support is your first stop for help in sol
32. or other special needs the group of conductors that interconnect individual circuitry in a computer Typically a bus is the expansion vehicle to which I O or other devices are connected Examples of PC buses are the ISA and PCI bus Celsius pin or wire lead on the multiplexer to which you apply or from which you read the signal a channel that is typically the output of a switch module the intermittent switching that occurs when the movable metal parts of a relay make or break contact direct current indicates when the contact bounce has ended See contact bounce a plug in module board or pad that can contain multiple channels and conversion devices Some examples of devices are computers multimeters multiplexers oscillators operator interfaces and counters an electronic component that acts primarily as a one way valve software that controls a specific hardware device such as a switch module a voltage pulse from an external source that triggers an event such as A D conversion G 2 ni com F flyback voltage H handshaking in Interchangeable Virtual Instrument VO ISA IVI NI Switch PXI National Instruments Corporation G 3 Glossary the voltage spike generated the instant current stops flowing through an inductor the use of two trigger lines between two instruments such as a switch and a DMM to synchronize their actions hertz the number of scans read or updates written per se
33. 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 e
34. t contradicts the information specified in this document Misuse of this instrument could result in a shock hazard Do not substitute parts or modify equipment beyond what is described in Appendix B Servicing Your Module 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 Connections that exceed any of the maximum signal ratings on the NI 2590 2591 can create a shock or fire hazard or can damage any or all of the devices connected to the NI 2590 2591 National Instruments is not liable for any damages or injuries resulting from incorrect signal connections Clean instrument and accessories by brushing off light dust with a soft nonmetallic brush Remove other contaminants with a stiff nonmetallic brush The unit must be completely dry and free from contaminants before returning to service O National Instruments Corporation 2 1 NI 2590 2591 User Manual Chapter 2 NI 2590 2591 Operation Functional Overview The following block diagrams illustrate the key functional components of the NI 2590 and NI 2591 switch modules The major components of the NI 2590 2391 are as follows e General purpose high frequency relays e Switch control circuitry e Random scanning e PXIbus interface e Triggers NI 2590 2591 User Manual 2 2 ni com Chapter 2 NI 2590 2591
35. tional Instruments Corporation A 5 NI 2590 2591 User Manual Appendix Specifications for NI 2591 Electromagnetic compatibility EMC emissions Refer to the document supplied with the chassis for compliance to relevant directives EM sheet sl ain re FCC Class compliant Certifications and Compliances CE Mark Compliance C See the Declaration of Conformity sheet accompanying product NI 2590 2591 User Manual A 6 ni com Servicing Your Module This appendix describes procedures for servicing your NI 2590 2591 module Replacing the NI 2590 Relay Module The NI 2590 is constructed so that the relay module can be replaced when the relays fail The life of the relay is nominally 10 operations when switching the maximum rated load You can order an RF 2590 replacement relay module for your NI 2590 from National Instruments The replacement kit contains the fully assembled module 7 y So Ty EX a ae y O y 1 Header 3 Screws 5 Hex Nuts and Washers 2 Relay Module 4 SMB Connectors Figure B 1 NI 2590 Parts Locator Diagram National Instruments Corporation B 1 NI 2590 2591 User Manual Appendix B Servicing Your Module Follow these instructions to replace the failed module as shown in Figure B 1 1 Ground yourself with a grounding strap or a ground connected to your PXI chassis Properly grounding yourself prevents damage to your PXI module from
36. trument driver is an Interchangeable Virtual Instrument IVD compliant instrument driver that is bundled with the module at no cost NI SWITCH features a set of operations and attributes that exercise all the functionality of the switching hardware including configuration opening closing and scanning In addition NI SWITCHNI SWITCH comes with an interactive soft front panel and online documentation NI SWITCH eliminates the need to understand complex register programming and interrupt handling in the Microsoft operating systems and frees you to focus on creating your test system National Instruments Application Software LabVIEW and LabWindows CVI are innovative program development software packages for data acquisition and control applications LabVIEW uses graphical programming whereas LabWindows CVI enhances traditional programming languages Both packages include extensive libraries for data acquisition instrument control data analysis and graphical data presentation Using LabVIEW or LabWindows CVI can significantly reduce the development time for your data acquisition and control application LabVIEW features interactive graphics a state of the art user interface and a powerful graphical programming language The LabVIEW NI SWITCH VI Library a series of virtual instruments VIs for using LabVIEW with National Instruments switch hardware is included with the NI SWITCH driver LabWindows CVI features interactive graphics
37. um rated DC voltage of the module is 30 V The maximum rated current is 0 33 A Two triggers are used for handshaking between the NI 2590 2591 switches and other PXI instruments The scanner advanced trigger indicates when the module has closed all the necessary switches for the next scan and the switches have settled or debounced National Instruments Corporation 1 1 NI 2590 2591 User Manual Chapter 1 Routing Signals with Your NI 2590 2591 The external trigger input trigger is generated by another instrument or by software and causes the NI 2590 2591 to advance to the next entry in the scan list The triggers can be routed to any of the PXI TTL triggers or to the PXI star trigger Refer to Chapter 2 NI 2590 2591 Operation for more information on triggers RF Switching Precautions A The NI 2590 2591 is a reflective switch meaning that any channels not switched to the common channel are unterminated and any signal on an unterminated channel will be reflected to its source For most low power switching applications this is not a problem However operation with an unterminated output can damage some high power RF sources Consult your RF source documentation for more information about connecting to unterminated channels Caution Always disconnect all signals from the front connectors and power down the PXI chassis before removing the NI 2590 2591 from the chassis Observe electrostatic discharge handling precautions durin
38. ving 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 through the Technical Support section of ni com NI Developer Zone The NI Developer Zone at ni com zone is the essential resource for building measurement and automation systems At the NI Developer Zone you can easily access the latest example programs system configurators tutorials technical news as well as a community of developers ready to share their own techniques Customer Education National Instruments provides a number of alternatives to satisfy your training needs from self paced tutorials videos and interactive CDs to instructor led hands on courses at locations around the world Visit the Customer Education section of ni com for online course schedules syllabi training centers and class registration System Integration If you have time constraints limited in house technical resources or other dilemmas you may prefer to employ consulting or system integration services You can rely on the expertise available through our worldwide network of Alliance Program members To find out more about our Alliance system integration solutions visit the System Integration section Of ni com O National Instruments Corporation D 1 NI
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