Benutzeranleitung / Produktwartung NI 2590/2591 des Produzenten 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.
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