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Manuale per l’uso National Instruments NI USB-9219

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  • National Instruments NI USB-9219 - page 1

    USER GUIDE AND SPECIFICATIONS NI USB-9219 4-Channel, 24-Bit, Univer sal Analog Input Module This user guide describes how to use the National Instruments USB-9219 and lists the device specifications. Introduction The NI USB-9219 provides a USB interface for four channels of universal analog input with integrated si gnal conditi oning. The NI USB-92 ...

  • National Instruments NI USB-9219 - page 2

    NI USB-9219 U ser Guide and Specifications 2 ni.com Dimensions Figure 2 shows the NI USB-9219 device dim ensions. Figure 2. NI USB-9219 Device in Millimeters (Inches) Safety Guidelines Operate the NI USB-9219 on ly as described in thes e operating instructions. Hot Surface This icon denotes that the componen t may be hot. T ouching this component m ...

  • National Instruments NI USB-9219 - page 3

    © National Instruments Corporation 3 NI USB-9219 User Gu id e and Specifications Caution When module term inal s are hazardous voltage LIVE (>42.4 V pk /60 VDC), you must ensure that device s and circuits connect ed to the module are properly insulate d from human contact. Y ou must use the NI 9972 connector backshell kit, as illustrated in Fig ...

  • National Instruments NI USB-9219 - page 4

    NI USB-9219 U ser Guide and Specifications 4 ni.com LabVIEW If you are a new user, use the Getting Started with LabVIEW manual to familiarize yourself wi th the LabVI EW graphical p rogrammin g environment and the basic LabVIEW features you use to build data acquisition and instrum ent control applications. Op en the Getting Started with LabVIEW ma ...

  • National Instruments NI USB-9219 - page 5

    © National Instruments Corporation 5 NI USB-9219 User Gu id e and Specifications can create channels and tasks, and write your own applications in your ADE using the NI-D A Qmx API. For help with NI-DA Qmx methods and proper ties, refer to the NI-D A Qmx .NET Class Library or the NI-D A Qmx V isual C++ Class Library included in the NI Measur ement ...

  • National Instruments NI USB-9219 - page 6

    NI USB-9219 U ser Guide and Specifications 6 ni.com Library»Using the Measurement Studio .NET Class Libraries to view conceptual topics for using NI-D A Q mx with V isual C# and V isual Basic .NET . T o get to the same help topics from with in V isual Stu dio, go to Help» Contents . Select Measurement Studio from the Filter ed By drop-do wn list ...

  • National Instruments NI USB-9219 - page 7

    © National Instruments Corporation 7 NI USB-9219 User Gu id e and Specifications Example Programs The NI-DAQmx CD contains example programs that you can use to get started programming wi th the NI USB-9219. Refer to the NI-DAQmx for USB Devices Getting Started Guide that shipped with your dev ice, and is also accessible from Start»All Programs»N ...

  • National Instruments NI USB-9219 - page 8

    NI USB-9219 U ser Guide and Specifications 8 ni.com 5. Press firmly on the connector side of t he NI USB-9219 m odule until the latches lock the module into place, as sho wn in Figure 5. Figure 5. Locking Module into Place 6. Connect the USB cable to the assembled NI USB-9219. Mounting the NI USB-9219 to a Panel Threaded inserts are located in the ...

  • National Instruments NI USB-9219 - page 9

    © National Instruments Corporation 9 NI USB-9219 User Gu id e and Specifications Connecting the NI USB-9219 to a Computer Plug one end of the USB cable into the NI USB-9219 and the other end into an available USB port on the computer. Refer to the NI-D A Qm x for USB Devices Getting Started Guide that shipped wit h your device, and is also accessi ...

  • National Instruments NI USB-9219 - page 10

    NI USB-9219 U ser Guide and Specifications 10 ni.com Wiring the NI USB-9219 Device Caution A high v oltage screw terminal backshell must be installed when using hazardous voltages (>42.4 V pk , 60 VDC). Note T able 2 illustrates the accessories a v ailable from ni. com for use with the NI USB-9219. The NI USB-9219 has four 6-terminal connecto rs ...

  • National Instruments NI USB-9219 - page 11

    © National Instruments Corporation 11 NI USB-9219 User Guid e and Specifications Connecting Wires to the NI USB-9219 Connectors Use a flathead screwdriver with a bl ade sm aller than 2.3 × 1.0 mm (0.09 × 0.04 in.) to connect wires to the de tachable spring-terminal connectors. Insert the screwdriver in to a spring clamp activation slot and press ...

  • National Instruments NI USB-9219 - page 12

    NI USB-9219 U ser Guide and Specifications 12 ni.com Wiring TEDS Channels The NI USB-9219 sup ports only Class II TEDS sens ors. Conn ect the two TEDS lines to TEDS Data (T+) and TEDS COM (T–) and ens ure that neither T+ nor T– is tied i n common to any of the signal inputs (terminals 3 through 6) on the NI USB-9219. Visi t ni.com/info and ente ...

  • National Instruments NI USB-9219 - page 13

    © National Instruments Corporation 13 NI USB-9219 User Guid e and Specifications NI USB-9219 T iming Options The NI USB-9219 supports four differ ent t iming options that are optimi zed for different types of applications by using different ADC conversion times. High Speed is optimized for hi gh speed at the expense of noise rejection, Best 60 Hz ...

  • National Instruments NI USB-9219 - page 14

    NI USB-9219 U ser Guide and Specifications 14 ni.com 4-Wire Resistance and 4-Wire RTD Modes 4-Wire Resistance and 4-Wire RTD mo des source a current, which varies based on the resistance of the load, between the EX+ and EX– terminals. The measured resistance is computed from the resulting voltage reading. These modes are not affected by lead wire ...

  • National Instruments NI USB-9219 - page 15

    © National Instruments Corporation 15 NI USB-9219 User Guid e and Specifications 2-Wire Resistance and Quarter -Bridge Modes In 2-Wire Resistance and Quarter-Brid ge modes, connect the two ends of the resistor or gauge to the NI USB-9219 across the HI and LO terminals. These modes source a current, which va ries based on the resistance of the load ...

  • National Instruments NI USB-9219 - page 16

    NI USB-9219 U ser Guide and Specifications 16 ni.com Thermocouple Mode In Thermocouple mode, connect the positive end of the thermocouple to HI and the negative end of the thermo couple to LO. This mode uses the ±125 mV range of the ADC to return a voltage reading. Use shi el de d cables and twisted-pair wiring and ground the shielded cables. Each ...

  • National Instruments NI USB-9219 - page 17

    © National Instruments Corporation 17 NI USB-9219 User Guid e and Specifications Specifications The following specifications are typi cal for the range 0 to 60 °C unless otherwise noted. Input Characteristics Number of channels ............. ...... ........ .... 4 analog input channels ADC resolution ....................... .............. . 24 bi ...

  • National Instruments NI USB-9219 - page 18

    NI USB-9219 U ser Guide and Specifications 18 ni.com Overvoltage protection Terminals 1 and 2 ................... .........±30 V Terminals 3 through 6, across any combination ............... ....±60 V Input impeda nce Voltage and Digital In modes (±60 V, ±15 V, ±4 V) ..................... .1 M Ω Current mode ...... .............. ........... ...

  • National Instruments NI USB-9219 - page 19

    © National Instruments Corporation 19 NI USB-9219 User Guid e and Specifications Stability Mode, Range Gain Drift (ppm of Reading/ °C) Offset Drift (ppm of Range/°C) V oltage, ± 60 V ±20 ±0.2 V oltage, ± 15 V ±20 ±0.8 V oltage, ± 4 V ±20 ±3.2 V oltage, ± 1 V ±10 ±0.2 V oltage/Thermocouple, ± 125 mV ±10 ±1.6 Current, ± 25 mA ±15 ...

  • National Instruments NI USB-9219 - page 20

    NI USB-9219 U ser Guide and Specifications 20 ni.com Input noise in ppm of Range rm s Input bias current ................ .............. ......<1 nA INL....................... ............ .............. .........±15 ppm CMRR ( f in = 60 Hz) .................... ........... .>100 dB NMRR Best 60 Hz Rejection .............. .........90 dB at ...

  • National Instruments NI USB-9219 - page 21

    © National Instruments Corporation 21 NI USB-9219 User Guid e and Specifications Excitation lev el for Half-Bridge and Full-Bridge modes Excitation level for Resistance, RTD, and Quarter-Bridge modes Power Requirements Current consumption from USB ............ 500 mA, max Suspend mode ............... ........... ....... 2.5 MA, max Bus Interface U ...

  • National Instruments NI USB-9219 - page 22

    NI USB-9219 U ser Guide and Specifications 22 ni.com Safety If you need to clean the module, wipe it with a dry towel. Safety Vo ltages Connect only voltages that are within these limits. Isolation Channel-to-channel Continuous ..... ........... .............. .250 VAC, Measurement Category II Withstand . .............. .............. ....1390 VAC, ...

  • National Instruments NI USB-9219 - page 23

    © National Instruments Corporation 23 NI USB-9219 User Guid e and Specifications Environmental The USB-9219 is intended for ind oor use only but may be used ou tdoors if installed in a suitable enclosure. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) ........... 0 to 60 °C Storage temperature (IEC 60068-2-1, IEC 60068-2-2) ........... – ...

  • National Instruments NI USB-9219 - page 24

    NI USB-9219 U ser Guide and Specifications 24 ni.com Environmental Management National Instruments i s committed to designing and ma nufacturing products in an environmental ly responsible mann er. NI recognizes that eliminating certa in hazardous substances from our products is beneficial not only to t he environment but also to NI customers. For ...

  • National Instruments NI USB-9219 - page 25

    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 a bout National Instruments trademarks. Other product and compan y names mentioned herein are trademarks or t rade names of their respective companie s . For patents covering Nati ...

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