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National Instruments NI PXI-562X - page 1
Computer -Based Instruments NI PXI-562 x User Manual High-Speed Frequency-Domain Digitizer NI PXI-562 x User Manual July 2002 Edition Part Number 322949 C-01 ...
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National Instruments NI PXI-562X - page 2
Support Worldwide Technical Support and Product Information ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 683 0100 Worldwide Offices Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Brazil 011 3262 3599, Canada (Calgary) 403 274 9391, Canada (Montreal) 514 ...
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National Instruments NI PXI-562X - page 3
Important Information Warranty The NI PXI-5620 and the NI PXI-5621 is warranted against defects in materi als and workmanship for a period of one year from the date of shipment, as eviden ced by receipts or other doc umentation. National Instruments will, at its op tion, repair or replace equi pment that proves to be defective duri ng the warranty ...
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National Instruments NI PXI-562X - page 4
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 industrial-commercial loc ations only) or Class B (for us ...
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National Instruments NI PXI-562X - page 5
Canadian Depart ment of Communications This Class B digital apparatus meets all requirements of the Canadian I nterference-Causing Equipment Regulations. Cet appareil num é rique de la classe B respecte toutes les exigences du R è gleme nt sur le mat é riel brouilleur du Canada. Compliance to EU Directives Readers in the European Union (EU) must ...
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National Instruments NI PXI-562X - page 6
© National Instruments Corporation vii NI PXI-562x User Manual Contents About This Manual Conventions ............ ........... .............. ............ ........... .............. ........... ............ .............. .... i x Related Documentation ............ .............. ........... .............. ............ .............. ........... . ...
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National Instruments NI PXI-562X - page 7
© National Instruments Corporation ix NI PXI-562x User Manual About This Manual The NI PXI-562 x is a single-channel hig h-speed digitizer module whose dynamic range and resolution are optimized for frequency-domain analysis applications in research, product design and v alidation, and manuf acturing test. This manual provides inform ation on inst ...
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National Instruments NI PXI-562X - page 8
About This Man ual NI PXI-562x User Manual x ni.com Related Documentation The following documents contain information that you might find helpful as you read this manual: • NI PXI-5620 Specifications • NI PXI-5621 Specifications • NI-SCOPE User Manual • Spectral Measurements Toolset User Guide ...
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National Instruments NI PXI-562X - page 9
© National Instruments Corporatio n 1-1 NI PXI-562x User Manual 1 T aking Measurements with the NI PXI-562 x The NI PXI-5620 is a 64 Ms/s, 14-bit frequency-domain digitizer module optimized for the best possible noise and distortion performance in a 5 – 25 MHz passband. It has a – 3 dB front-end bandwidth from 10 kHz to 36 MHz, and is always A ...
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National Instruments NI PXI-562X - page 10
Chapter 1 T aking Measurements with the NI PXI-562x NI PXI-562x User Manual 1-2 ni.com a. Insert your NI-SCOPE CD into your CD driv e. If instal lation does not start automatically , navigate to your CD dri ve and click setup.exe . b . T o install both the instrument driv er and ADE examples, select the Programmatic and Interactive Support option w ...
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National Instruments NI PXI-562X - page 11
Chapter 1 T aking Measurements with the NI PXI-562x © National Instruments Corporation 1- 3 NI PXI-562x User Manual 3. Find the NI 562 x in the list. Notice the de vice number assigned to your NI 562 x . Y ou need this de v ice number to program your N I 562 x . 4. Right-click the device name, and select Properties from the menu. 5. From the Prope ...
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National Instruments NI PXI-562X - page 12
Chapter 1 T aking Measurements with the NI PXI-562x NI PXI-562x User Manual 1-4 ni.com For more detailed VI and function help, refe r to the NI-SCOPE VI Reference Help and the NI-SCOPE Function Reference Help , located at Start » Programs » National Instruments » NI-SCOPE . Safety Information The following section contains important safety i nfo ...
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National Instruments NI PXI-562X - page 13
Chapter 1 T aking Measurements with the NI PXI-562x © National Instruments Corporation 1- 5 NI PXI-562x User Manual Operate this product only at or belo w the installation cate gory stated in the NI PXI-5620 Specifications and the NI PXI-5620 Specificat ions documents. The following is a description of installation categories: • Installation Cat ...
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National Instruments NI PXI-562X - page 14
Chapter 1 T aking Measurements with the NI PXI-562x NI PXI-562x User Manual 1-6 ni.com Belo w is a diagram of a sample installation. ...
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National Instruments NI PXI-562X - page 15
© National Instruments Corporatio n 2-1 NI PXI-562x User Manual 2 Hardware Over view This chapter provides an overview of the feat ures and functionality of the NI 562 x . How the NI 562 x Wo r k s A signal follows this path throug h the NI 562 x to the hos t computer: 1. The signal enters the NI 562 x through the analog front panel connector, INP ...
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National Instruments NI PXI-562X - page 16
Chapter 2 Hardware Over view NI PXI-562x User Manual 2-2 ni.com Connecting Signals Figure 2-2 shows t he NI 562 x front panel, which contai ns three connectors: two SMA connectors and an SMB connector. One of the SMA connectors, INPUT , is for attaching the analog input signal you want to measure. The secon d SMA connector , REF CLK IN, i s a 50 ? ...
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National Instruments NI PXI-562X - page 17
Chapter 2 Hardware Over view © National Instruments Corporatio n 2-3 NI PXI-562x User Manual Conditioning the Signal—Impedance, Dither , Gain, and AC Coupling To minimize distortion, signals receive a minimal amount of conditioning. Gain and coupling are nonadjustable. The NI PXI-562 0 is AC coupled, meaning it rejects any DC signal components. ...
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National Instruments NI PXI-562X - page 18
Chapter 2 Hardware Over view NI PXI-562x User Manual 2-4 ni.com Incorporating the DDC Optionally, you can route the data through t he DDC before storing it in onboard memory . The DDC is a digital signal processing (DSP) chip, the Intersil HSP50214B. The first stage uses a digital quadrature mixer that shifts a signal to baseband from any frequency ...
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National Instruments NI PXI-562X - page 19
Chapter 2 Hardware Over view © National Instruments Corporatio n 2-5 NI PXI-562x User Manual Block Diagram The block diagram below illustrat es the operation of the NI 562 x . An explanation of some of these features follows. Figure 2-3. NI 562 x Block Diagram The digital downcon v erter is a digital signal processor (DSP) that allows you to digit ...
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National Instruments NI PXI-562X - page 20
Chapter 2 Hardware Over view NI PXI-562x User Manual 2-6 ni.com a free-running state, in which the acquisition clock is not synchronized to any e xternal reference. The voltage controlled crystal oscillator (VCXO) is a 64 MHz clock. The trigger and clock routing area directs clock sign als and triggers. The TIO is the tim ing engine used f or the N ...
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National Instruments NI PXI-562X - page 21
Chapter 2 Hardware Over view © National Instruments Corporatio n 2-7 NI PXI-562x User Manual Figure 2-4 shows a timing diagram of a multiple-record acquisition. Figure 2-4. Multiple-Record Acquisition Timing Diagram T riggering You can externally trigg er the NI 562 x through the di gital line, PFI1. You can also use software to trigger the NI 562 ...
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National Instruments NI PXI-562X - page 22
Chapter 2 Hardware Over view NI PXI-562x User Manual 2-8 ni.com Synchronizing Multiple PXI Devices The NI 562 x uses a PLL to synchronize the 64 MHz sample clock to a 10 MHz reference clock. You can either supply the reference clock through the SMA connector (REF CLK IN) on the front panel or use the system reference clock on the PXI backplane. The ...
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National Instruments NI PXI-562X - page 23
© National Instruments Corporation A-1 NI PXI-562x User Manual A T echnical Support and Professional Ser v ices Visit the following sections of the National Instruments Web site at ni.com for technical support and professional services: • Support — Online technical support resources include the following: – Self-Help Resources — F or immed ...
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National Instruments NI PXI-562X - page 24
© National Instruments Corporation G-1 NI PXI-562x User Manual Glossar y Pref ix Meanings V alue p- pico 10 – 12 n- nano- 10 – 9 µ- micro- 10 – 6 m- milli- 10 – 3 k- kilo- 10 3 M- mega- 10 6 G- giga- 10 9 Symbols % percent + positiv e of, or pl us – negati ve of, or minus /p e r ° degree ± plus or minus Ω ohm < less than A A ampe ...
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National Instruments NI PXI-562X - page 25
Glossary NI PXI-562x User Manual G -2 © National Instruments Corporation A C coupled allowing the transmission of A C signals while blocki ng DC signals ADC analog-to-digital con verter — an electronic de vice, often an integrated circuit, that con verts an analog voltage to a digital number ADC resolution the resolution of the ADC, which is mea ...
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National Instruments NI PXI-562X - page 26
Glossary © National Instruments Corporation G-3 NI PXI-562x User Manual CMRR common-mode rejection ratio — a measure of an instrument ’ s ability to reject interference from a common-mode signal, usually e xpressed in decibels (dB) coupling the manner in which a signal is connected from one location to another D data path logic a signal router ...
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National Instruments NI PXI-562X - page 27
Glossary NI PXI-562x User Manual G -4 © National Instruments Corporation dr i ve rs software that control s a specific hardware instrument DSP digital signal processo r E EEPR OM electrically erasable programmable read-only memory — R OM that can be erased with an electrical signal and reprogrammed F FFT fast F ourier transform filtering a type ...
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National Instruments NI PXI-562X - page 28
Glossary © National Instruments Corporation G-5 NI PXI-562x User Manual input bias current the current that flows into the inputs of a circuit input impedance the measured resistance an d capacitance between the input terminal s of a circuit instrument driv er a set of high-lev el software fun ctions that controls a specific plug-in D A Q board. I ...
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National Instruments NI PXI-562X - page 29
Glossary NI PXI-562x User Manual G -6 © National Instruments Corporation N noise an undesirable electrical sign al — noise comes from external sources such as the A C power line, motors, generators, transformers, fluorescent lights, soldering irons, CR T displays, computers, electrical storms, welders, radio transmitters, and internal sources su ...
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National Instruments NI PXI-562X - page 30
Glossary © National Instruments Corporation G-7 NI PXI-562x User Manual R Rr e s i s t o r RAM random-access memory random interleav ed sampling (RIS) method of increasing sample rate b y repetitiv ely sampling a repeated wav eform real-time sampling sampling that occurs immediately record length the size of a chunk (or record) of data that can be ...
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National Instruments NI PXI-562X - page 31
Glossary NI PXI-562x User Manual G -8 © National Instruments Corporation Shannon Sampli ng Theorem a theorem stating that a signal must be sampled at least twice as f ast as the bandwidth of the signal to accurately reconstruct the signal as a wa veform source impedance a parameter of signal sources that reflects current-driving ability of voltage ...
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National Instruments NI PXI-562X - page 32
Glossary © National Instruments Corporation G-9 NI PXI-562x User Manual V error v oltage error vertical sensiti vity the smallest v oltage change a device can detect VI 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 LabVIE ...
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National Instruments NI PXI-562X - page 33
© National Instruments Corporatio n I-1 NI PXI-562x User Manual Index A acquiring data multi-record acqu isitions, 2-6 programmatically, 1-3 ADC, 2-3 B basic signal flow (fi gure), 2-1 block diagram for NI PXI-562 x digiti zer, 2-5 C calibration, 2-7 conditioning signal s AC coupling, 2-3 dither, 2-3 gain, 2-3 input impedance, 2-3 connecting signa ...
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National Instruments NI PXI-562X - page 34
Index NI PXI-562x User Manual I-2 ni.com gain, 2-3 input impedence, 2-3 help professional services, A-1 technical support, A-1 I incorporating DDC, 2-4 input impedence, 2-3 installing software and har dware, 1-1 instrument drivers, A-1 K KnowledgeBase, A-1 M MITE interface, 2-6 multiple-record acqui sitions overview, 2-6 timing diagram (fig ure), 2 ...
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National Instruments NI PXI-562X - page 35
Index © National Instruments Corporatio n I-3 NI PXI-562x User Manual T technical support, A-1 telephone technical support, A-1 TIO (timing engine), 2-6 training customer, A-1 trigger and clock routing area, 2-6 triggering digital trigger sources (figure), 2 -7 overview, 2-7 troubleshooting resources, A-1 V voltage controlled crystal oscillator (V ...
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