Manuale d’uso / di manutenzione del prodotto NI PXI-562X del fabbricante National Instruments
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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.
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 Off.
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.
Compliance FCC/Canada Radio Frequency Interference Compliance* Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless communications from interference.
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.
© National Instruments Corporation vii NI PXI-562x User Manual Contents About This Manual Conventions ............ ........... .............. ............ ........... .............. ........... ............ .............. .... i x Related Documentation .
© 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.
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 Specification.
© 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.
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.
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 .
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 .
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.
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..
© 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.
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.
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.
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 .
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 .
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.
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.
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.
© 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.
© 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.
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 electr.
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,.
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 erasabl.
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.
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.
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 e.
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 sign.
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 c.
© 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 .
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.
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 routi.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il National Instruments NI PXI-562X è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del National Instruments NI PXI-562X - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso National Instruments NI PXI-562X imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul National Instruments NI PXI-562X ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il National Instruments NI PXI-562X, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del National Instruments NI PXI-562X.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il National Instruments NI PXI-562X. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo National Instruments NI PXI-562X insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
