Instruction/ maintenance manual of the product NI 2590/2591 National Instruments
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Computer-Based Instruments NI 2590/2591 User Manual NI 2590/2591 User Manual November 2000 Edition Part Number 322387 B-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 Aus.
Important Information Warranty The NI 2590 and NI 2591 switch modules and accessories are war rante d ag ains t de fec ts i n ma ter ials and wo rkman ship fo r a period of on e year from the date of s hipment, as e videnced by rec eipts or ot her docume ntation.
Compliance FCC/Canada Radio Frequency Interference Compliance* Determining FCC Class The Federal Communication s Commission (FCC) has rules to protect wireless comm unications from interference.
• Connect the equipment into an outlet on a circuit diffe rent from that to which the rec eiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Canadian Depart ment of Communications This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Conventions The follo wing con ventions 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 e xample, DBIO<3..0>. This icon denotes a note, which alerts you t o important information.
© National Instruments Corporatio n vii NI 2590/2591 User Manual Contents Chapter 1 Routing Signals with Your NI 2590/2591 About the NI 2590/2591 ................................................................................................ 1-1 Triggers.
Contents NI 2590/259 1 User Man ual viii ni.com Appendix C Common Questions Appendix D Technical Support Resources Glossary Index.
© National Instruments Corporatio n 1-1 NI 2590/2591 User Manual 1 Routing Signals with Y our 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, a1 × 4, 50 Ω , 4.
Chapter 1 Routing Signals with Y our NI 2590/2591 NI 2590/259 1 User Man ual 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 trigger s can be routed to any of the PXI TTL tr iggers or to the P X Is t a rt r i g g e r .
Chapter 1 Ro uting Signals with Y our N I 2590/2591 © National Instruments Corporatio n 1-3 NI 2590/2591 User Manual Connecting Signals The front of the NI 25 90 module has five “ push-on ” SMB connectors for signal connections. The NI 2591 has five SMA female connectors.
Chapter 1 Routing Signals with Y our NI 2590/2591 NI 2590/259 1 User Man ual 1-4 ni.com NI 2591 Front Connector The following diagram shows the NI 2591 front connect or. Table 1-1 describes the connector sign als. Figure 1-2. NI 2591 Front Connector Table 1-1.
Chapter 1 Ro uting Signals with Y our N I 2590/2591 © National Instruments Corporatio n 1-5 NI 2590/2591 User Manual Software Choices You have several options to choose from when programming your National Instruments switch modul e. You can use the NI-SWITCH driv er software or National Instruments appl ication software.
Chapter 1 Routing Signals with Y our NI 2590/2591 NI 2590/259 1 User Man ual 1-6 ni.com Third-Party Software The NI-SWITCH instrum ent driver also includes support files for Microsoft Visual C++ and Microsoft Visual Basic. See the NI-SWITCH Software Readme File for version support information.
© National Instruments Corporatio n 2-1 NI 2590/2591 User Manual 2 NI 2590/2591 Operation This chapter contains safety instructions and a fu nctional overview of the NI 2590/2591 switch modules. It also explains the operation of each functional unit making u p the switch modu le.
Chapter 2 NI 2590/2591 Operation NI 2590/259 1 User Man ual 2-2 ni.com Functional Over view The following block diagrams illustrate the key functi onal components of the NI 2590 and NI 2591 switch modu les.
Chapter 2 NI 2590/2591 Operation © National Instruments Corporatio n 2-3 NI 2590/2591 User Manual Figure 2-1. NI 2590 Module Block Diagram CH1 COM CH2 CH0 CH3 F ront Panel T r iggers Scan Memory MUX2.
Chapter 2 NI 2590/2591 Operation NI 2590/259 1 User Man ual 2-4 ni.com Figure 2-2. NI 2591 Module Block Diagram CH1 COM CH2 CH0 CH3 T r iggers PXI Bus Connector High– F requency Relay 4 GHz Relay Mo.
Chapter 2 NI 2590/2591 Operation © National Instruments Corporatio n 2-5 NI 2590/2591 User Manual Relay Operation NI 2590 Operation The NI 2590 has four channels, CH0 through CH3, any on e of which can be connected to the single commo n channel (COM) by closing the appropriate relays.
Chapter 2 NI 2590/2591 Operation NI 2590/259 1 User Man ual 2-6 ni.com Switch Control Circuitr y The switch control circuitr y (SCC) is responsible for opening and closin g relays on the NI 2590/259 1. You can load commands for the SCC into scan memory using the driver software you received with your kit.
Chapter 2 NI 2590/2591 Operation © National Instruments Corporatio n 2-7 NI 2590/2591 User Manual intervention. Y ou can configure the switch module to process the scan list once or to continuously loop throu gh the scan list.
Chapter 2 NI 2590/2591 Operation NI 2590/259 1 User Man ual 2-8 ni.com Modes SCANADV has two modes o f operation. In its default m ode, the SCANADV trigger asserts for 1 µs after the relay h as debounced.
Chapter 2 NI 2590/2591 Operation © National Instruments Corporatio n 2-9 NI 2590/2591 User Manual it possible to wir e external triggers from/to only one switch module in th e system, which simplifies the wiring scheme. Note The NI 2590/2591 does not support triggers on the front p anel connector .
© National Instruments Corporatio n A- 1 NI 2590/2591 User Manual A Specifications This appendix lists the specifications for the NI 2590/25 91 switch module. These specif i cations are typical at 25 ° C unless otherwise note d. NI 2590 Input Characteristics Number of relays .
Appendix A Specifications for NI 2590 NI 2590/259 1 User Man ual A-2 ni.com VSWR at: < 100 MHz ............. ......................... . < 1.15 < 500 MHz ............. ......................... . < 1.35 < 1.3 GHz ........ ..............
Appendix A Specifications for NI 2590 © National Instruments Corporatio n A- 3 NI 2590/2591 User Manual PXI T rigger Bus Trigger lines ........... ....................... ......... 8 Star trigger................. ...................... ....... 1 Power Requirement +5 VDC Minimum (all relays opened) .
Appendix A Specifications for NI 2591 NI 2590/259 1 User Man ual 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 voltag e AC.
Appendix A Specifications for NI 2591 © National Instruments Corporatio n 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 N I 2591 with high-power signals.
Appendix A Specifications for NI 2591 NI 2590/259 1 User Man ual A-6 ni.com Electromagnetic compatibilit y (EMC) emissions ......................... .... Refer to the document supplied with the chassis for compliance to relevant directives. EMI ......
© National Instruments Corporatio n B- 1 NI 2590/2591 User Manual B Ser vicing Y our Module This appendix describes proced ures for servicing your NI 2590/25 91 module. Replacing the NI 2590 Relay Module The NI 2590 is constructed so that the relay module can be replaced when the relays fail.
Appendix B Servicing Y our Module NI 2590/259 1 User Man ual B-2 ni.com Follo w these in structions to replace the failed module as shown in Figure B-1. 1. Ground yourself with a grounding strap o r a ground connected to your PXI chassis. Properly groundi ng yourself prev e nts damage to your PXI module f rom electrostatic discharge.
Appendix B Servicing Y our Module © National Instruments Corporatio n B- 3 NI 2590/2591 User Manual Figure B-2. RF 2591 Replacement Relay Module Follo w these in structions to replace the failed module as shown in Figure B-2. 1. Ground yourself with a g rounding strap or a grou nd connected to your PXI chassis.
© National Instruments Corporatio n C- 1 NI 2590/2591 User Manual C Common Questions This appendix addresses common questions you may hav e while using your NI 2590/2591 switch module. What should I do if the software detects the module but the switches do not switch? V erify that the switches do not switch.
Appendix C Common Questions NI 2590/259 1 User Man ual C-2 ni.com Finally , verify that your code is correct. For reference, see the examples described in the NI-SWITCH Software User M anual . The NI-Swi tch dri ver also ships with sev eral examples in source code.
© National Instruments Corporatio n D-1 NI 2590/2591 User Manual D T echnical Support Resources W eb Support National Instruments W eb support is your first stop for help in solving installation, configuration, and application pro blems and questions.
Appendix D T echnical Support Resources NI 2590/259 1 User Man ual D-2 ni.com W orldwide Support National Instruments has of fices located around the world to help address your support needs. Y ou can access our branch of fice W eb sites from the W orldwide Of fices section of ni.
© National Instruments Corporatio n G-1 NI 2590/2591 User Manual Glossar y Pref ix Meaning V alue p- pico- 10 – 12 n- nano- 10 – 9 µ- micro- 10 – 6 m- milli- 10 – 3 M- mega- 10 6 G- giga- 10.
Glossary NI 2590/259 1 User Man ual G-2 ni.com B breakpoint a specified point in program cod e where the program pau ses to perform some action; a breakpoint interrupt can be add ed to a scan list for debugging or o ther special needs. bus the group of conductors that in terconnect individual circuitry in a computer .
Glossary © National Instruments Corporatio n G-3 NI 2590/2591 User Manual F flyback voltage the voltage spike generated the instant current stops flo wi ng through an inductor H handshaking the use o.
Glossary NI 2590/259 1 User Man ual G-4 ni.com R random scanning scanning the channels in a mux in any order reflecti ve switch a switch architecture in which the unused channels are NO T terminated in the characteristic impedance of the syst em. The unused channels are open circuits.
Glossary © National Instruments Corporatio n G-5 NI 2590/2591 User Manual V V volts v aristor an electrical resistor whose resistance depends on the applied v oltage VDC volts, direct current VI virt.
© National Instruments Corporatio n 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 comp liances NI 2590, A-3 NI 2591, A-6 CH<0.
Index NI 2590/259 1 User Man ual I-2 ni.com contact protection, 1-2 front connectors (figur es), 1-3 to 1-4 overview, 1-1 parts locator diagram NI 2590, B-1 NI 2591, B-3 replacing relay module NI 2590.
Index © National Instruments Corporatio n 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 q.
An important point after buying a device National Instruments NI 2590/2591 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought National Instruments NI 2590/2591 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data National Instruments NI 2590/2591 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, National Instruments NI 2590/2591 you will learn all the available features of the product, as well as information on its operation. The information that you get National Instruments NI 2590/2591 will certainly help you make a decision on the purchase.
If you already are a holder of National Instruments NI 2590/2591, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime National Instruments NI 2590/2591.
However, one of the most important roles played by the user manual is to help in solving problems with National Instruments NI 2590/2591. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device National Instruments NI 2590/2591 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
