Manuale d’uso / di manutenzione del prodotto NI USB-9239 del fabbricante National Instruments
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USER GUIDE AND SPECIFICATIONS NI USB-9229/9239 4-Channel, 24-Bit Analog Vo ltage Input Module This user guide describes how to use the National Instruments USB-9229/9239 and lists the device specifications. In this document, the NI USB-9229 and NI USB-9239 ar e referred to inclusiv ely as the NI USB-9229/9239.
NI USB-9229/9 239 User Guid e and Specifications 2 ni.com Dimensions Figure 2 shows the NI USB-9229/9239 device dimensions. Figure 2. NI USB-9229/9239 Device in Millimeters (Inches) Safety Guidelines Ope ra te t he NI USB -9229/ 9239 only as described in these operating instructions.
© National Instruments Corporation 3 NI US B-9229/9239 User G u ide and Specifications Caution Make sure that de vices and circuits connected to the module are properly insulated from human contact. Caution When module term in als are hazardous voltage LIVE (>42.
NI USB-9229/9 239 User Guid e and Specifications 4 ni.com The NI-DAQmx Help contains general inform ation about measurement concepts, key NI-D A Qmx concepts, and common applications that are applicable to all programming environments. Select Start»All Programs»National Instruments»NI-D A Q»NI-DA Qmx Hel p .
© National Instruments Corporation 5 NI US B-9229/9239 User G u ide and Specifications Measurement Studio If you program your NI-D A Qm x-su pported device in Measurement Studio using V isual C++, V isual C#, or V isu al Basic .
NI USB-9229/9 239 User Guid e and Specifications 6 ni.com The installed documentation co ntains the NI-D A Qmx API overvie w , measurement tasks and concepts, and func tion reference. This help is fully integrated into the V isual St udio .NET documentation.
© National Instruments Corporation 7 NI US B-9229/9239 User G u ide and Specifications Installing Other Software If you are using other softw are, refer to the installation inst ructions that accompany your software. Example Programs The NI-DAQmx CD contains example programs that you can use to get started programming with the NI USB-9229/9 239.
NI USB-9229/9 239 User Guid e and Specifications 8 ni.com 5. Press firmly on the connector side of t he NI 9229/9239 m odule until the latches lock the module into place, as sho wn in Figure 5.
© National Instruments Corporation 9 NI US B-9229/9239 User G u ide and Specifications LED Indicator The NI USB-9229/9239 device has a green LED next to the USB connector.
NI USB-9229/9 239 User Guid e and Specifications 10 ni.com source to the AI– terminal. Refer to Table 3 for the terminal assignments for each channel.
© National Instruments Corporation 11 NI US B-9229/923 9 User Gu ide and Specifications Connecting Signal Sources to the NI USB-9229/9239 You can connect ground-referenced or floating signal sources to the NI USB-9229/9239.
NI USB-9229/9 239 User Guid e and Specifications 12 ni.com Each channel provides an independent signal path and ADC, enablin g you to sample all four channels simu ltaneously . Refer to Figur e 10 for an illustration of the circuitry for one channel. Figure 10.
© National Instruments Corporation 13 NI US B-9229/923 9 User Gu ide and Specifications Passband The signals within the passband have frequ ency-dependent gain or attenuation. The small amount of vari ation in gain with respect to frequency is called the passband flatness.
NI USB-9229/9 239 User Guid e and Specifications 14 ni.com Specifications The following specifications are typical for the range 0 to 60 °C unless otherwise noted. All voltages ar e relative to the AI– signal on each channel unless otherwise noted.
© National Instruments Corporation 15 NI US B-9229/923 9 User Gu ide and Specifications Accuracy, NI USB-9229 Accuracy, NI USB-9239 Input noise NI USB-9229 ................... .............. . 320 μ V rms NI USB-9239 ................... ........... .
NI USB-9229/9 239 User Guid e and Specifications 16 ni.com NI USB-9229 ............... ....................0.045°/kHz + 360°· f in /M clk 1 NI USB-9239 ............... ....................0.075°/kHz + 360°· f in /M clk 1 Phase nonlinearity ( f s = 50 kS/s).
© National Instruments Corporation 17 NI US B-9229/923 9 User Gu ide and Specifications Physical Characteristics Screw-terminal wiring..................... ....... 16 to 28 AWG copper conductor wire with 7 mm (0.28 in .) of insulation stripped from the end Torque for screw terminals .
NI USB-9229/9 239 User Guid e and Specifications 18 ni.com Note For UL and other safety certifications, refer to the product lab el or visit ni.com/ certification , search for the module number or product line, and click the appropriate link in the Certification column.
© National Instruments Corporation 19 NI US B-9229/923 9 User Gu ide and Specifications CE Compliance This product meets the essential re quirements of applicable European Directives, as amended fo r.
National Instruments, NI, ni.com, and LabVIEW are tradem arks of National Instruments Corporation. Refer to t he Terms of Use section on ni.com/legal for more information abou t National Instruments trademarks. Other product and compan y names mentioned herein are trademarks or trade names of their respective companie s .
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 USB-9239 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 USB-9239 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso National Instruments NI USB-9239 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul National Instruments NI USB-9239 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il National Instruments NI USB-9239, 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 USB-9239.
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 USB-9239. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo National Instruments NI USB-9239 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.
