1. DL manuals
  2. National Instruments
  3. Network Card
  4. NI 2590/2591
  5. User Manual

National Instruments NI 2590/2591 User Manual

Manual is about: National Instruments Network Card User Manual

Summary of NI 2590/2591

  • Page 1

    Computer-based instruments ni 2590/2591 user manual ni 2590/2591 user manual november 2000 edition part number 322387b-01.

  • Page 2

    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 (cal...

  • Page 3: Important Information

    Important information warranty the ni 2590 and ni 2591 switch modules and accessories 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 re...

  • Page 4: Compliance

    Compliance fcc/canada radio frequency interference compliance* determining fcc class the federal communications commission (fcc) has rules to protect wireless communications from interference. The fcc places digital electronics into two classes. These classes are known as class a (for use in industr...

  • Page 5

    • 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 technician for help. Canadian department of communications this class b digital apparatus meets all requirements of the canadian interference-ca...

  • Page 6: Conventions

    Conventions the following conventions are used in this manual: angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for example, dbio. This icon denotes a note, which alerts you to important information. This icon denotes a cau...

  • Page 7: Contents

    © national instruments corporation vii ni 2590/2591 user manual contents chapter 1 routing signals with your ni 2590/2591 about the ni 2590/2591 ................................................................................................1-1 triggers..................................................

  • Page 8

    Contents ni 2590/2591 user manual viii ni.Com appendix c common questions appendix d technical support resources glossary index.

  • Page 9: Routing Signals

    © national instruments corporation 1-1 ni 2590/2591 user manual 1 routing signals with your ni 2590/2591 this manual describes the electrical and mechanical characteristics of the ni 2590, a 1 × 4, 50 Ω , 1.3 ghz multiplexer module, and the ni 2591, a 1 × 4, 50 Ω , 4.0 ghz multiplexer module, for th...

  • Page 10: Rf Switching Precautions

    Chapter 1 routing signals with your ni 2590/2591 ni 2590/2591 user manual 1-2 ni.Com 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 trigge...

  • Page 11: Connecting Signals

    Chapter 1 routing signals with your ni 2590/2591 © national instruments corporation 1-3 ni 2590/2591 user manual 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, labeled com...

  • Page 12

    Chapter 1 routing signals with your ni 2590/2591 ni 2590/2591 user manual 1-4 ni.Com ni 2591 front connector the following diagram shows the ni 2591 front connector. Table 1-1 describes the connector signals. Figure 1-2. Ni 2591 front connector table 1-1. Front connector signal description signal na...

  • Page 13: Software Choices

    Chapter 1 routing signals with your ni 2590/2591 © national instruments corporation 1-5 ni 2590/2591 user manual 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 applic...

  • Page 14

    Chapter 1 routing signals with your ni 2590/2591 ni 2590/2591 user manual 1-6 ni.Com 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 a...

  • Page 15: Ni 2590/2591 Operation

    © national instruments corporation 2-1 ni 2590/2591 user manual 2 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 cau...

  • Page 16: Functional Overview

    Chapter 2 ni 2590/2591 operation ni 2590/2591 user manual 2-2 ni.Com 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 2590/2591 are as follows: • general-purpose high-frequency relays •...

  • Page 17

    Chapter 2 ni 2590/2591 operation © national instruments corporation 2-3 ni 2590/2591 user manual figure 2-1. Ni 2590 module block diagram ch1 com ch2 ch0 ch3 front panel triggers scan memory mux23 mux0123 mux01 relay control pxi interface pxibus connector.

  • Page 18

    Chapter 2 ni 2590/2591 operation ni 2590/2591 user manual 2-4 ni.Com figure 2-2. Ni 2591 module block diagram ch1 com ch2 ch0 ch3 triggers pxi bus connector high– frequency relay 4 ghz relay module control lines relay control scan memory pxi interface decoder front panel.

  • Page 19: Relay Operation

    Chapter 2 ni 2590/2591 operation © national instruments corporation 2-5 ni 2590/2591 user manual relay operation ni 2590 operation the ni 2590 has four channels, ch0 through ch3, any one of which can be connected to the single common channel (com) by closing the appropriate relays. You can control t...

  • Page 20: Switch Control Circuitry

    Chapter 2 ni 2590/2591 operation ni 2590/2591 user manual 2-6 ni.Com 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....

  • Page 21: Pxi Interface

    Chapter 2 ni 2590/2591 operation © national instruments corporation 2-7 ni 2590/2591 user manual 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 ...

  • Page 22

    Chapter 2 ni 2590/2591 operation ni 2590/2591 user manual 2-8 ni.Com modes scanadv has two modes of operation. In its default mode, the scanadv trigger asserts for 1 µs after the relay has debounced. You can also configure the switch module for handshaking mode, in which the scanadv trigger goes hig...

  • Page 23

    Chapter 2 ni 2590/2591 operation © national instruments corporation 2-9 ni 2590/2591 user manual it possible to wire external triggers from/to only one switch module in the system, which simplifies the wiring scheme. Note the ni 2590/2591 does not support triggers on the front panel connector. If th...

  • Page 24: Specifications

    © national instruments corporation a-1 ni 2590/2591 user manual a 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..................................

  • Page 25

    Appendix a specifications for ni 2590 ni 2590/2591 user manual a-2 ni.Com vswr at: isolation: risetime .................................................. Signal delay ............................................ Maximum rf carry power at 900 mhz .............................................10 w note...

  • Page 26

    Appendix a specifications for ni 2590 © national instruments corporation a-3 ni 2590/2591 user manual pxi trigger bus trigger lines ........................................... 8 star trigger.............................................. 1 power requirement +5 vdc minimum (all relays opened)............

  • Page 27: Ni 2591

    Appendix a specifications for ni 2591 ni 2590/2591 user manual a-4 ni.Com ni 2591 input characteristics number of relays ....................................3 common-mode voltage channel to earth...............................30 v rms or dc maximum switching voltage ac..................................

  • Page 28

    Appendix a specifications for ni 2591 © national instruments corporation a-5 ni 2590/2591 user manual 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...

  • Page 29

    Appendix a specifications for ni 2591 ni 2590/2591 user manual a-6 ni.Com electromagnetic compatibility (emc) emissions .............................Refer to the document supplied with the chassis for compliance to relevant directives. Emi..................................................Fcc class a...

  • Page 30: Servicing Your Module

    © national instruments corporation b-1 ni 2590/2591 user manual b 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 ...

  • Page 31

    Appendix b servicing your module ni 2590/2591 user manual b-2 ni.Com 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...

  • Page 32

    Appendix b servicing your module © national instruments corporation b-3 ni 2590/2591 user manual figure b-2. Rf 2591 replacement relay module follow these instructions to replace the failed module as shown in figure b-2. 1. Ground yourself with a grounding strap or a ground connected to your pxi cha...

  • Page 33: Common Questions

    © national instruments corporation c-1 ni 2590/2591 user manual c 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 sw...

  • Page 34

    Appendix c common questions ni 2590/2591 user manual c-2 ni.Com 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...

  • Page 35: Web Support

    © national instruments corporation d-1 ni 2590/2591 user manual d 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 inclu...

  • Page 36: Worldwide Support

    Appendix d technical support resources ni 2590/2591 user manual d-2 ni.Com 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...

  • Page 37: Glossary

    © national instruments corporation g-1 ni 2590/2591 user manual glossary prefix meaning value p- pico- 10 –12 n- nano- 10 –9 µ- micro- 10 – 6 m- milli- 10 –3 m- mega- 10 6 g- giga- 10 9 numbers and symbols ° degrees Ω ohms % percent > greater than less than a a amperes ac alternating current adc amp...

  • Page 38

    Glossary ni 2590/2591 user manual g-2 ni.Com b breakpoint 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 or other special needs. Bus the group of conductors that interconnect individual circuitry in ...

  • Page 39

    Glossary © national instruments corporation g-3 ni 2590/2591 user manual f flyback voltage the voltage spike generated the instant current stops flowing through an inductor h handshaking the use of two trigger lines between two instruments, such as a switch and a dmm, to synchronize their actions hz...

  • Page 40

    Glossary ni 2590/2591 user manual g-4 ni.Com r random scanning scanning the channels in a mux in any order reflective switch a switch architecture in which the unused channels are not terminated in the characteristic impedance of the system. The unused channels are open circuits. Relay a switch that...

  • Page 41

    Glossary © national instruments corporation g-5 ni 2590/2591 user manual v v volts varistor an electrical resistor whose resistance depends on the applied voltage vdc volts, direct current vi virtual instrument—(1) a combination of hardware and/or software elements, typically used with a pc, that ha...

  • Page 42: Index

    © national instruments corporation i-1 ni 2590/2591 user manual index b 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 signal (table), 1-4 com signal (table), 1-4 common questions about ni 2590/2591, c-1 to c-2 connec...

  • Page 43

    Index ni 2590/2591 user manual i-2 ni.Com 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, ...

  • Page 44

    Index © national instruments corporation i-3 ni 2590/2591 user manual 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-...