NI myDAQ User Guide and Specifications
Contents
1. National Instruments Corporation 47 NI myDAQ User Guide and Specifications Texas Instruments Components in NI myDAQ Integrated circuits supplied by Texas Instruments form the power and analog I O subsystems of NI myDAQ Figure 2 depicts the arrangement and function of the NI myDAQ subsystems Table 5 lists all of the Texas Instruments components used in NI myDAQ Visit www ti com to see the specifications documents for each of the components in the design Table 5 Texas Instruments Components in NI myDAQ Texas Instruments Part Integrated Circuit IC Number Description Current Limited Power TPS2553 This is used for applications where precision Distribution Switch current limiting is required or heavy capacitive loads and short circuits are encountered Regulator TPS61170 This is a monolithic high voltage boost regulator with an integrated 1 2 A 40 V power MOSFET Regulator TPS62007 The TPS6200x devices are a family of low noise synchronous step down DC DC converter that is Regulator TPS62003 ideally suited for systems powered from a one cell Li ion battery or from a two to three cell NiCd NiMH or alkaline battery LDO Regulator TPS71501 These are low dropout LDO voltage regulators offering the benefits of low noise LDO Regulator TPS76433 low dropout voltage low power operation and miniaturized packages Digital Isolator ISO7241A2. Input protection eeeeeeeeeeeeeeereeeeseseee Internal ceramic fuse 1 25 A 250 V fast acting 5 x 20 mm F 1 25A H 250V Littelfuse part number 02161 25 NI myDAQ User Guide and Specifications 42 ni com Resistance Measurement Ran AE teste aes 200 Q 2 KQ 20 KQ 200 KQ 2 MQ 20 MQ Accuracy Accuracy Function Range Resolution of Reading Offset Q 200 0 Q 0 1 Q 0 8 0 3 Q 2 000 kQ 0 001 kQ 0 8 3Q 20 00 kQ 0 01 kQ 0 8 302 200 0 kQ 0 1 KQ 0 8 300 Q 2 000 MQ 0 001 MQ 0 8 3 KQ 20 00 MQ 0 01 MQ 1 5 50 kQ Exclusive of lead wire resistance Diode Measurement Power Supplies UN Caution Do not mix power from NI myDAQ with power from external power sources When using external power remove any connections to the power supply terminals on NI myDAQ 15V Supply Output voltage Typical no load eee 15 0 V Maximum voltage with no load Minimum voltage with full load 14 0 V Maximum output current Maximum load capacitance 1 The total power available for the power supplies analog outputs and digital outputs is limited to 500 mW typical 100 mW minimum Refer to the NI myDAQ Hardware Overview section for information on calculating the total power consumption of the components of your system National Instruments Corporation 43 NI myDAQ User Guide and Specifications 15V Supply Output voltage Typica
3. Configuration Triggering Advanced Timing S betats 2 Voltage Output Setup VoltageOut_0 VoltageOut_1 Max 2 Volts v Min 2 Terminal Configuration Glick the Add Channels button lt Let NI DAQ Choose gt iv to add more channels to Custom Scaling the task lt No Scale gt v pe v Generation Mode 8 Samples to Write Rate Hz Continuous Samples v 100 1k 17 Click OK to exit the DAQ Assistant configuration front panel The VI builds Click No on the Confirm Auto Loop Creation dialog box that displays 18 Wire the data output terminal of the first DAQ Assistant Express VI to the data input terminal of the second DAQ Assistant Express VI NI myDAQ User Guide and Specifications 34 ni com 19 20 21 22 Add a While Loop to the block diagram by right clicking the block diagram window and selecting Programming Structures While Loop from the Functions palette and drag out a rectangular region to enclose both DAQ Assistant Express VIs Add a STOP control to your front panel by right clicking the STOP button and selecting Create Control Click the run button to test your LabVIEW application Attach a music player to the AUDIO IN 3 5 mm jack and connect speakers to the AUDIO OUT jack You should hear the music on the speakers If you do not hear sound test the speakers on the music player to make sure there is sound playing and that the speakers are functioning properly This example provid
4. DC Volts 200 0 mV 0 1 mV 0 5 0 2 mV 2 000 V 0 001 V 0 5 2 mV 20 00 V 0 01 V 0 5 20 mV 60 0 V 0 1 V 0 5 200 mV 40 to 400 Hz 400 to 2 000 Hz AC Volts 200 0 mV 0 1 mV 1 4 0 6 mV 2 000 V 0 001 V 1 4 0 005 V 5 4 0 005 V 20 00 V 0 01 V 1 5 0 05 V 5 5 0 05 V The accuracy for AC Volts 200 0 mV range is in the frequency range of 40 Hz to 100 Hz For example for a 10 V using the DC Volts function in the 20 00 V range calculate the accuracy using the following equation 10 V x 0 5 20 mV 0 07 V Input impedance s sseseeeseeeeeeeeeeeeeeeeeee 10 MQ National Instruments Corporation 41 NI myDAQ User Guide and Specifications Current Measurement DG Tan SOS nsi a aai 20 mA 200 mA 1 A AC fan ges iceus s 20 MAyms 200 MAgms 1 Arms ay Note All AC accuracy specifications within 20 mA and 200 mA ranges apply to signal amplitudes greater than 5 of range All AC accuracy specifications within the 1 A range apply to signal amplitudes greater than 10 of range Accuracy Accuracy Function Range Resolution of Reading Offset DC Amps 20 00 mA 0 01 mA 0 5 0 03 mA 200 0mA 0 1 mA 0 5 0 3 mA 1 000 A 0 001 A 0 5 3 mA 40 to 400 Hz 400 to 2 000 Hz AC Amps 20 00mA 0 01 mA 1 4 0 06 mA 5 0 06 mA 200 0mA 0 1 mA 1 5 0 8 mA 5 0 8 mA 1 000 A 0 001 A 1 6 6 mA 5 6 mA
5. mV 10 10 22 8 38 9 2 2 4 9 8 6 NI myDAQ User Guide and Specifications 36 ni com 3 75 3 7k 35 44 5kQ 3 25 10kQ 2 25 2 25 2 25 1 75 1 5 1 25 Settling Error s 0 75 s 0 5 T 0 25 al 0 25 200 180 160 140 120 100 80 60 40 Sample Rate kHz Figure 21 Settling Time 10 V Range versus Different Source Impedance 2 8 2 6 2kQ 2 4 a 22 Y 10 kQ 1 8 1 6 Sg 1 4 1 2 s Settling Error s 0 8 w 0 6 0 4 x 0 2 sz Famm 0 2 200 180 160 140 120 100 80 60 40 Sample Rate kHz Figure 22 Settling Time 2 V Range versus Different Source Impedance National Instruments Corporation 37 NI myDAQ User Guide and Specifications Analog Output Input FIFO size ossis 4 095 samples shared among channels used Maximum working voltage for analog inputs signal common mode 10 5 V to AGND Common mode rejection ratio CMRR DC to 60 HZ 70 dB Input impedance Device on Al or AI to AGND gt 10 GO II 100 pF ATH to Alm eeeeseeeeteeeereeees gt 10 GO II 100 pF Device off Al or AI to AGND 5 KQ Alto Al isir 10 kQ Anti aliasing filter 0seeeeeeeeeeeeeeeeeeeeeee
6. eee 16 to 26 AWG Torque for screw terminals 0 0 22 0 25 N m 2 0 2 2 lb in Environmental The NI myDAQ device is intended for indoor use only Operating temperature IEC 60068 2 1 and IEC 60068 2 2 0 to 45 C Storage temperature IEC 60068 2 1 and IEC 60068 2 2 20 to 70 C Operating humidity TEC 60068 2 56 cceeeeeceeeeteeeesteeeeeee 10 to 90 RH noncondensing Storage humidity TEC 60068 2 56 0 0 ceeceeceeeeteeeeeteeeeees 10 to 90 RH noncondensing Maximum altitude cceceeeeseeeerees 2 000 m at 25 C ambient temperature Pollution Degree IEC 60664 2 Safety Safety Voltages Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage MAINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such voltage measurements include signal levels special equipment limited energy parts of equipment circuits powered by regulated low voltage sources and electronics UN Caution Do not use this module for connection to signals or for measurements within Measurement Categories II HI or IV National Instruments Corporation 45 NI myDAQ User Guide and Specifications Safety Standards This product is designed to meet the requirements of the following standards o
7. NI ELYISmx Arbitrary Analyzer Digital Reader Digital Writer Waveform Generator T ms ms NI ELYISmx NI ELYISmx NI ELYISmx Digital Multimeter Function Oscilloscope Generator National Instruments Corporation 29 NI myDAQ User Guide and Specifications Example Measuring Signals Using the NI ELVISmx Oscilloscope Express VI with NI myDAQ Complete the following steps to use the NI ELVISmx Oscilloscope to measure a signal Sy Note For more information on grounding the signals refer to the Connecting Analog Input Signals section 1 Launch LabVIEW 2 Inthe Getting Started window click Blank VI A blank VI opens Select Window Show Block Diagram to open the VI block diagram Tip You can also open the block diagram from the VI front panel by pressing lt Ctrl E gt 3 Right click the block diagram window to open the Functions palette then select Measurement I O NI ELVISmx to open the ELVISmx Express VI palette 4 Select the NI ELVISmx Oscilloscope Express VI from the VI palette and place it on the block diagram The NI ELVISmx Oscilloscope configuration window opens 5 Connect the signal s you want to measure to the connector s on the side of the NI myDAQ device 6 On the Configuration tab of the configuration window select to measure Channel 0 Channel 1 or both Select the Channel 0 Enable checkbox to measure Channel 0 Select the Channel 1 Enable checkbox to measure Channel 1 Select the Cha
8. NI myDAQ Setting up Your NI myDAQ Device PAN Caution Insert and remove the 20 position screw terminal connector aligned evenly to the NI myDAQ Inserting the screw terminal connector at an angle to the NI myDAQ may cause damage to the connector The screw terminal connector must snap securely into place to ensure proper signal connection 1 NI myDAQ 4 20 Position Screw Terminal Connector 2 USB Cable 5 Audio Cable 3 LED 6 DMM Banana Cable Figure 3 NI myDAQ Connection Diagram National Instruments Corporation 9 NI myDAQ User Guide and Specifications Connecting Signals Figure 4 shows the available audio AI AO DIO GND and power signals accessed through the 3 5 mm audio jacks and screw terminal connections Refer to Table 1 for descriptions of these signals UN Caution Signal wires must be securely affixed and screwed down in the screw terminal connector to ensure proper connection AUDIO IN AUDIO OUT Figure 4 NI myDAQ 20 Position Screw Terminal 1 0 Connector Table 1 Screw Terminal Signal Descriptions Signal Name Reference Direction Description AUDIO IN Input Audio Input Left and right audio inputs on a stereo connector AUDIO OUT Output Audio Output Left and right audio outputs on a stereo connector 15V 15V AGND Output 15 V 15 V
9. Started sno ce pear eas ee ee ia ete ee eee 8 Making Signal Connections with NI myDAQ ow eeetreeees 9 Setting up Your NI myDAQ Device eee eee eeeeeeeneeeeeteeetnees 9 Connecting Sigmalss eae eetis a ee es ise Mes E eas 10 Connecting Analog Input Signals eee eseeseceseeneeeeeeseeees 11 NI myDAQ DMM Fuse Replacement ee eeseeseeeseeeeneeeeneeeeeeee 14 Digital I O DIO and Counters TimetS 0 0 0 ce eeeeceeseeeneeeeeeeneeceseeeneeees 17 Using NI myDAQ with Soft Front Panel SFP Instruments 18 NI ELVISmx Instrument Launcher oo eee eeceeeeeeeeneeeeeeeeees 19 Digital Multimeter DMM cee eeeceeseeseceeeeseeseneeeaeecneeeeseeeeees 20 Oscilloscope SCOPE eeceecsecsesseeeccesneerersecensesscessessceseesasconenne 21 Function Generator FGEN ccscccccssesesseeeseteeessecessteeensneseesnees 22 Bode Analyzer se ici hase tite ea beet 23 Dynamic Signal Analyzer DSA eee ceeeeeceeceeeeeeeseeaeeneeeateaes 24 Arbitrary Waveform Generator ARB ceeeeeseeeseeeseeeneeeeneeeeaeees 25 Digital RAMEE rers eeen eRe E E R rte oor SEES 26 Digital Witr reisen niee aa EAEE A ASEAS 27 Example Measuring a Signal Using the NI ELVISmx Oscilloscope SFP with NI myDAQ sssesessesseseseersresrsrrsrsresrerrseesese 28 Using NI myDAQ with LabVIEW sseesseeeseesseeerssssrssesresrrsesresreresrerrssesr 29 NI ELVISmx Express VIs in LabVIEW sseeeseeessererrereererrsreee 29 Example Measuring Signals Using
10. This is a quad channel digital isolator with multiple channel configurations and output enable functions Shift Register SN74AHC595 This device contains an 8 bit serial in parallel out shift register that feeds an 8 bit D type storage register Switch TS5A3159 This is a single pole double throw SPDT analog switch designed to operate from 1 65 V to 5 5 V Operational Amplifier OPA171 This is a single supply low noise operational amplifier Operational Amplifier TL062C This JFET operational amplifier features high input impedance wide bandwidth high slew rate low input offset and input bias currents NI myDAQ User Guide and Specifications 48 ni com Table 5 Texas Instruments Components in NI myDAQ Continued Texas Instruments Part Integrated Circuit IC Number Description ADC ADS8319 This is a 16 bit 500 kS s analog to digital converter DAC DAC8551 This is a small low power voltage output 16 bit digital to analog converter DAC Reference REF3025 This is a precision low power low voltage dropout voltage reference available in a small SOT23 3 Tristate Buffer SN74AHCT1G125 This is a single bus buffer gate line driver with three state output Voltage Supervisor TPS3809 This is a supervisory circuit that provides circuit initialization and timing supervision primarily for DSPs and processor based systems Comparator TLV3491 This is a push pull output comparator
11. power supplies AGND Analog Ground Reference terminal for AI AO 15 V and 15 V AO 0 AO 1 AGND Output Analog Output Channels 0 and 1 AI 0 AI 0 AGND Input Analog Input Channels 0 and 1 AI 1 AI 1 DIO lt 0 7 gt DGND Input or Digital I O Signals General purpose digital Output lines or counter signals DGND Digital Ground Reference for the DIO lines and the 5 V supply 5V DGND Output 5 V power supply NI myDAQ User Guide and Specifications 10 ni com Figure 5 shows the DMM connections on the NI myDAQ Table 2 describes these signals Caution 60 VDC 20 Vrms maximum Do not plug digital multimeter probes into circuits with Hazardous Voltages such as wall outlets 1 Connectors for Voltage Resistance Diode Continuity 2 Connectors for Current Figure 5 Connections for DMM Measurements Table 2 DMM Signal Descriptions Signal Name Reference Direction Description HI VQ gt COM Input Positive terminal for voltage resistance and diode measurements COM Reference for all DMM measurements HI A COM Input Positive terminal for current measurements Fused F 1 25 A 250 V Fast Acting Connecting Analog Input Signals When configuring the input channels and making signal connections you must first determine whether the signal sources are floating or ground referenced The following sections describe
12. the NI ELVISmx Oscilloscope Express VI with NI myDAQ eects 30 Using NI DAQmx with NI myDAQ ssssssssessssersreseresserrresresesrrsrerese 32 Example Measuring Audio Pass Through in LabVIEW with NV My DAQ e n Sects a a E a E EN 32 Specifications ee a haloes ha a A a eed A R 36 Texas Instruments Components in NI myDAQ ou eee eeteeeeeeees 48 Resource Conflicts 223 tienda dhs HAs Wate eae ese gt 50 Additional RESOULCES c55e tases ck a EREA EE N EEA 52 Related Documentation eee cece ceeeseeeeseeseeseeeseceseeasenseeseeaes 52 Other RESOUICES eri secs or ea rE RA E EE NRE 53 Common Terms and ACrOnymMS sesseesesessesssetssrsrssrstrsreresrrsrsresreet 53 Waranty e aea aa RR N N 54 Where to Go for Support eee eee cee ceceeeceeeeeeceeeeseeseeeseesseeaeenseeas 54 NI myDAQ User Guide and Specifications 2 ni com Conventions The following conventions are used in this manual This icon denotes a tip which alerts you to advisory information This icon denotes a note which alerts you to important information This icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash p gt gt i EH CAUTION The inputs outputs of this product can be damaged if subjected to Electrostatic Discharge ESD To prevent damage industry standard ESD prevention measures must be employed during installation maintenance and operation Safety Information Do not operate th
13. these two signal types Ground Referenced Signal Sources A ground referenced signal source is connected to the building system ground so it is already connected to a common ground point with respect to the NI myDAQ device assuming that the computer is plugged into the same power system Instruments or devices with nonisolated outputs that plug into the building power system are ground referenced signal sources National Instruments Corporation 11 NI myDAQ User Guide and Specifications B Note Most laptop computers have isolated power supplies and are consequently not connected to the building ground system In these cases treat the analog input signal as floating with respect to NI myDAQ The difference in ground potential between two instruments connected to the same building power system is typically between 1 and 100 mV This difference can be much higher if power distribution circuits are improperly connected If a grounded signal source is improperly measured this difference might appear as a measurement error Connect the differential analog inputs across the signal source and do not connect the NI myDAQ AGND pin to the grounded source Signal Source Al a Figure 6 Ground Referenced Differential Connection Floating Signal Sources A floating signal source is not connected to the same ground reference as NI myDAQ but instead has an isolated reference point Some examples
14. I myDAQ NI ELVISmx uses LabVIEW based software instruments to control the NI myDAQ device providing the functionality of a suite of common laboratory instruments Refer to the Using NI myDAQ with Soft Front Panel SFP Instruments section for information on the NI ELVISmx suite of measurement instruments NIELVISmx is located on your driver software installation media included in the NI myDAQ kit or can be found by searching for ELVISmx on the Drivers and Updates page at ni com drivers To determine the version of NI ELVISmx software support required for your version of LabVIEW go to ni com info and enter the Info Code ELVISmxsoftware NI LabVIEW and NI ELVISmx Express VIs Also installed with NI ELVISmx are the LabVIEW Express VIs which use NI ELVISmx software instruments to program NI myDAQ with more enhanced functionality For more information on the NI ELVISmx Express VIs refer to the Using NI myDAQ with LabVIEW section 3 Note NI ELVISmx supports LabVIEW 32 bit To use NI ELVISmx with LabVIEW on a 64 bit operating system you must have LabVIEW 32 bit installed National Instruments Corporation 7 NI myDAQ User Guide and Specifications NI myDAQ and NI Multisim You can use NI ELVISmx instruments in NI Multisim to simulate a circuit measure the real signals with NI myDAQ and compare simulated and acquired data To see step by step instructions for using NI ELVISmx instruments in NI Multisim refer to Using NI ELVISm
15. Le OPA1642 gt AO 1 i v i WPS menrs DC DC Digital A isolation ps i aii Isolation Sse Isolator Barrier P Rines Transformer IS07241 Audio AMP Line Out R TPA6110A2 TEXAS Weve 45 725 ag H Line Out L LDO LDO Regulator Regulator Shift TPS71501 TPS76433 Register rms eres SN74AHC595 INSTRUMENTS INSTRUMENTS Winans Isolated 3 3 V l Isolated 5 V Switch TS5A3159 Riens HI COM HI Lwow lw J Note NI myDAQ components may be changed or substituted without notice Figure 2 NI myDAQ Hardware Block Diagram Analog Input Al There are two analog input channels on NI myDAQ These channels can be configured either as general purpose high impedance differential voltage input or audio input The analog inputs are multiplexed meaning a single analog to digital converter ADC is used to sample both channels In general purpose mode you can measure up to 10 V signals In audio mode the two channels represent left and right stereo line level inputs Analog inputs can be measured at up to 200 kS s per channel so they are useful for waveform acquisition Analog inputs are used in the NI ELVISmx Oscilloscope Dynamic Signal Analyzer and Bode Analyzer instruments National Instruments Corporation 5 NI myDAQ User Guide and Specifications Analog Output AO There are two analog o
16. None Overvoltage protection AI or Al to AGND 16 V Overvoltage protection audio input left and right None Number of channels cessceeseeseeees 2 ground referenced or 1 stereo audio output DAC resolution eee eeeeseeeeeereeeeee 16 bits Maximum update rate ee 200 kS s Range Analog Output eee eeeeeeereeee 10 V 2 V DC coupled Audio OULPUt eee eeeeeeeeeeees 2 V AC coupled Maximum output current analog Output oo ecceeeeeseteeeeteeeees 2mA 1 The total power available for the power supplies analog outputs and digital outputs is limited to 500 mW typical 100 mW minimum Refer to the NJ myDAQ Hardware Overview section for information on calculating the total power consumption of the components of your system NI myDAQ User Guide and Specifications 38 ni com Output impedance Analog output eee eeeeeeeeteeeeeees 1Q Audio output oe eee eee 1209 Minimum load impedance audio OULPUL eee eeeeecseeeeteeeeeeeeteeeee 8Q Connector type Analog output eee eeeereeee Screw terminals Audio output oe eect eee 3 5 mm stereo jack AC coupling high pass frequency audio output with 32 Q load 48 Hz Absolute accuracy Nominal Range Positive Negative Typical at23 C Maximum 18 to 28 C Full Scale Full Scale mV mV 10 10 19 6 42 8 2 2 5 4 8 8 STEW Tate rics a ha ra E E NA Aea 4 V us Timing aCCUTACY ssesseeeeeeeeereerererre
17. e Littelfuse part number 02161 25 at www 1littelfuse com To replace a broken fuse complete the following steps 1 Power down the device by properly disconnecting it from the PC and removing the USB cable 2 Remove the screw terminal connector and all other signal cables from the device 3 Loosen the four Phillips screws that attach the bottom of the enclosure to the device and remove the top lid of the enclosure National Instruments Corporation 15 NI myDAQ User Guide and Specifications A Caution Do not remove the board from the bottom half of the NI myDAQ enclosure 4 Replace the broken fuse while referring to Figure 10 for the fuse location taking care to not damage any components on the board D7 NATIO PO NSTRUMEA Ts NI myDA Q 1 Enclosure Screws 2 Internal Fuse 1 25 A Fast Acting Littelfuse Part Number 02161 25 Figure 10 NI myDAQ Fuse Location 5 Replace the lid and screws NI myDAQ User Guide and Specifications 16 ni com Digital 1 0 DIO and Counters Timers There are eight software timed DIO lines on the NI myDAQ that can be individually configured for input or output Additionally lines DIO lt 0 4 gt can be configured for counter timer functionality The input accessed through DIO 0 DIO 1 and DIO 2 signals configured as a counter is used for counter timer pulse width measuring and quadrature encoding applications When using
18. e SFP National Instruments Corporation 21 NI myDAQ User Guide and Specifications Function Generator FGEN The NI ELVISmx Function Generator FGEN generates standard waveforms with options for the type of output waveform sine square or triangle amplitude selection and frequency settings In addition the instrument offers DC offset setting frequency sweep capabilities and amplitude and frequency modulation The FGEN uses AO 0 or AO 1 on the screw terminal connector This instrument has the following measurement parameters e Output channel AO 0 or AO 1 e Frequency range 0 2 Hz to 20 kHz ti Function Generator NI ELVISmx J E LabVIEW NI myDAQ User Guide and Specifications Frequency Amplitude DC Offset P D P J T 0 0 10 0 5 0 5 0 1 00 2 Ypp 0 00 4 w x TU 200m 20k Duty Cycle Modulation Type 100 Hz 50 8 o None Start Frequency Stop Frequency Step Step Interval 100 0 Hz 1 0k Hz 100 00 6 Hz 1000 ms Device Signal Route Devi NI myDAQ 400 v Run Sweep Stop Help C Manual Mode gt Late a Figure 14 NI ELVISmx Function Generator SFP 22 ni com Bode Analyzer The NI ELVISmx Bode Analyzer produces a Bode plot for analysis By combining the frequency sweep feature of the function generator and the analog input capability of the device a full function Bode Analyzer is available with NI ELVISmx You can set the frequency range of the in
19. e hardware in a manner not specified in this document and in the user documentation Misuse of the hardware can result in a hazard You can compromise the safety protection if the hardware is damaged in any way If the hardware is damaged return it to National Instruments for repair Clean the hardware with a soft nonmetallic brush Make sure that the hardware is completely dry and free from contaminants before returning it to service Electromagnetic Compatibility Guidelines This product was tested and complies with the regulatory requirements and limits for electromagnetic compatibility EMC as stated in the product specifications These requirements and limits are designed to provide reasonable protection against harmful interference when the product is operated in its intended operational electromagnetic environment This product is intended for use in residential commercial and industrial locations There is no guarantee that harmful interference will not occur in a particular installation or when the product is connected to a test object To minimize the potential for the product to cause interference to radio and television reception or to experience unacceptable performance degradation install and use this product in strict accordance with the instructions in the product documentation National Instruments Corporation 3 NI myDAQ User Guide and Specifications Furthermore any changes or modifications to the product not ex
20. e the DAQ Assistant Express VI by right clicking the block diagram window and selecting Measurement I O NI DAQmx DAQ Assist from the Functions palette 4 Place the DAQ Assistant Express VI on the block diagram The DAQ Assistant Create New Express Task configuration window opens Tip You can also use the Quick Drop dialog box to locate the DAQ Assistant Express VI Select View Quick Drop or press the lt Ctrl Space gt keys to display this dialog box 5 Inthe DAQ Assistant configuration window select Acquire Signals Analog Input and click Voltage to select a Voltage task NI myDAQ User Guide and Specifications 32 ni com 6 Inthe Supported Physical Channels window select audioInputLeft from under the Devx NI myDAQ option You can also press lt Ctrl gt while clicking audioInputRight to select both channels 7 Click Finish to exit the Create New Express Task dialog 8 On the Configuration tab of the DAQ Assistant front panel window configure voltage channel 0 by selecting Voltage_0 in the Channel Settings pane and setting Max to 2 and Min to 2 in the Signal Input Range pane Repeat this step for voltage channel 1 if you configured the task for two channels 9 Under Timing Settings set Acquisition Mode to Continuous Samples Enter 5000 in Samples to Read and 40000 in Rate Hz Configuration Triggering Advanced Timing Logging X Si Detail gt Voltage Input Setup voltage_0 Settings Volta
21. ee USER GUIDE AND SPECIFICATIONS NI myDAQ ra rf Fran ais Deutsch Att Of EPX ni com manuals aaa INSTRUM EAT NI mypaq Figure 1 NI myDAQ NI myDAQ is a low cost portable data acquisition DAQ device that uses NI LabVIEW based software instruments allowing students to measure and analyze real world signals NI myDAQ is ideal for exploring electronics and taking sensor measurements Combined with NI LabVIEW on the PC students can analyze and process acquired signals and control simple processes anytime anywhere Contents Conventions risie i E ea i EERE EREA 3 Safety Information sissien a E EE R 3 Electromagnetic Compatibility Guidelines eee eeeeseeeeeeeeeeeee 3 7 NATIONAL p INSTRUMENTS NI myDAQ Hardware Overview cceseescssseseeseceseeseenseeseensesseeeneeaees 4 Anal g Input AD rra secsvers tees ces E aE aE E ENERE 5 Analog Output AO aen n E O E R 6 Digital Input Output DIO sseesseeesseeseserseeresrsresreresrsrrsreresresesersreee 6 Power Supplies sinc ne a bel ln ee 6 Digital Multimeter DMM cee ceeeeeneceneeeeeeeeneeeneeeeeeeeaeersneeeaeeeee 7 NI myDAQ Software Overview sssesseseseeesreeesresresesresrreesresrerenreresresrse 7 NI ELVISmx Driver Software seeseeseseesreresesesrersernrserserrssssssseessere 7 NI LabVIEW and NI ELVISmx Express VIs ooeec T NI myDAQ and NI Multisim 0 eee eeeesecneeeseeseeeeeneeeaes 8 Getting
22. es the basis for audio measurement Experiment further by placing digital signal processing steps such as filters between the input and output National Instruments Corporation 35 NI myDAQ User Guide and Specifications Specifications Performance is typical after a three minute warmup at 23 C unless otherwise specified This document may not contain the most recent published specifications To get the most recent edition of this document go to ni com manuals and enter mydag into the Search field Analog Input Number of channels 0 eee ee eeeeeeee 2 differential or 1 stereo audio input ADC resolution cies eee eereeneeee 16 bits Maximum sampling rate ee 200 kS s Timing ACCULACY oo eee eee eeeeeeeeeeees 100 ppm of sample rate Timing resolution n se 10 ns Range Analog input 0 eee ee eeseeeeeeees 10 V 2 V DC coupled Audio INPUt oe ee eee ereeeeeeeeeee 2 V AC coupled Passband 3 dB Analog input 0 0 eee eeeeseeeeereeeee DC to 400 kHz Audio INPUt ee ee eeeeee eee ereeeee 1 5 Hz to 400 kHz Connector type Analog input eee eee eeeeeeeeeeeees Screw terminals Audio INPUt a eee eeteeeeeeee tees 3 5 mm stereo jack Input type audio input ee eee eee Line in or microphone Microphone excitation audio input 5 25 V through 10 KQ Absolute accuracy Nominal Range Positive Negative Typical at23 C Maximum 18 to 28 C Full Scale Full Scale mV
23. eseeee 100 ppm of sample rate Timing resolution eee eeeeeeeee 10 ns Overdrive protection eee 16 V to AGND Maximum power on voltage 0 110 mV Output FIFO 126 seinan 8 191 samples shared among channels used Digital 1 0 Number of lines ccccceessesceeeessseeeee 8 DIO lt 0 7 gt Direction Control cee eeeeeeeeeseeeseeeeeees Each line individually programmable as input or output Update mode s s css cssc secetesieceecescesthestes Software timed 1 When powered on the analog output signal is not defined until after USB configuration is complete National Instruments Corporation 39 NI myDAQ User Guide and Specifications Pull down resistor ccccccseeeeeseseeeeeees 75 KQ Logi ley luiciaenesoe nus 5 V compatible LVTTL input 3 3 V LVTTL output V i TOD ieai 2 0 V V ie MAR oiea AEE 0 8 V Maximum output current per line 4mA General Purpose Counter Timer Number of counter timers cece 1 ReSolutlmiseisesisaes tess adiveceiasaiehacseeeese 32 bits Internal base clocks 0 0 0 eeeeeseeeeneeeeeeees 100 MHz Base clock accuracy 100 ppm Maximum counting and pulse generation update rate ee 1 MS s Default routing CTR 0 SOURCE eee PFI 0 routed through DIO 0 CTR 0 GATE cieren PFI 1 routed through DIO 1 CIRO AUX crnina PFI 2 routed through DIO 2 CIR OOUT nerinpnooonea PFI 3 routed through DIO 3 FREQ OU Tascin PFI 4 routed through DIO 4 Data transfe
24. f safety for electrical equipment for measurement control and laboratory use IEC 61010 1 EN 61010 1 UL 61010 1 CSA 61010 1 B Note For UL and other safety certifications refer to the product label or the Online Product Certification section Hazardous Locations The NI myDAQ device is not certified for use in hazardous locations Electromagnetic Compatibility This product meets the requirements of the following EMC standards for electrical equipment for measurement control and laboratory use EN 61326 1 IEC 61326 1 Class B emissions Basic immunity EN 55011 CISPR 11 Group 1 Class B emissions AS NZS CISPR 11 Group 1 Class B emissions FCC 47 CFR Part 15B Class B emissions ICES 001 Class B emissions 3 Note For EMC declarations and certifications refer to the Online Product Certification section CE Compliance C This product meets the essential requirements of applicable European Directives as follows 2006 95 EC Low Voltage Directive safety 2004 108 EC Electromagnetic Compatibility Directive EMC Online Product Certification To obtain product certifications and the Declaration of Conformity DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column NI myDAQ User Guide and Specifications 46 ni com Environmental Management bt NI is committed to designing and manufacturing products in an enviro
25. ge_1 M 2 i Volts v Min 2 Terminal Configuration Click the Add Channels button RE M to add more channels to Custom Scaling the task lt No Scale gt v v Acquisition Mode Samples to Read Rate Hz Continuous Samples v 5k 40000 10 Click OK to exit the DAQ Assistant configuration front panel The VI builds Click No on the Confirm Auto Loop Creation dialog box that displays 11 Place another DAQ Assistant Express VI to the right of the previously configured DAQ Assistant Express VI on the block diagram The DAQ Assistant Create New Express Task configuration window opens 12 In the DAQ Assistant configuration window select Generate Signals Analog Output and click Voltage to select a Voltage task National Instruments Corporation 33 NI myDAQ User Guide and Specifications 13 In the Supported Physical Channels window select audioOutputLeft from under the Devx NI myDAQ option You can also press lt Ctrl gt while clicking audioOutputRight to select both channels 14 Click Finish to exit the Create New Express Task dialog 15 On the Configuration tab of the DAQ Assistant front panel window configure voltage channel 0 by selecting VoltageOut_0 in the Channel Settings pane and setting Max to 2 and Min to 2 in the Signal Output Range pane Repeat this step for voltage channel 1 if you configured the task for two channels 16 Under Timing Settings set Generation Mode to Continuous Samples
26. is ready to use After the NI myDAQ is connected to the system the blue LED lights indicating the device is ready for use 1 Connect the signal s you want to measure to the connector s on the side of the NI myDAQ device 2 Launch the NI ELVISmx Scope SFP from the NI ELVISmx Instrument Launcher 3 Click Run You should see the signal in the Display Window 4 Ifnecessary adjust the controls to stabilize the signal in the graph Adjust the Time Div Vertical Position Scale and other controls as desired NI myDAQ User Guide and Specifications 28 ni com Using NI myDAQ with LabVIEW This section provides an overview of using NI myDAQ with LabVIEW NI ELVISmx Express Vis in LabVIEW With NI ELVISmx the NI myDAQ instruments have an associated LabVIEW Express VI Express VIs allow you to interactively configure the settings for each instrument This enables you to develop LabVIEW applications without extensive programming expertise To access the NI ELVISmx Express VIs open a LabVIEW block diagram and select Measurement I O NI ELVISmx from the function palette Table 4 shows the available NI ELVISmx Express VIs Refer to the NI ELVISmx Help for more information To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISmx Help Table 4 NI ELVISmx Express Vis for NI myDAQ NI ELVISmx Express VI i NI ELYISmx NI ELVISmx Bode NI ELYISMX
27. is ready to use After the NI myDAQ is connected to the system the blue LED lights indicating the device is ready for use and the NI ELVISmx Instrument Launcher launches automatically NI ELVISmx provides soft front panel SFP instruments created in LabVIEW and the source code for the instruments You cannot directly modify the executable files but you can modify or enhance the functionality of these instruments by modifying the LabVIEW code which installs in the following location e Windows XP 2000 C Documents and Settings All Users Shared Documents National Instruments NI ELVISmx Source Code e Windows 7 Vista C Users Public Documents National Instruments NI ELVISmx Source Code 3 Note For a detailed explanation of the SFP instruments instructions for taking a measurement with each instrument and information on the other NI ELVISmx Instrument Launcher features refer to the NJ ELVISmx Help To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISmx Help NI myDAQ User Guide and Specifications 18 ni com NI ELVISmx Instrument Launcher The NI ELVISmx Instrument Launcher provides access to the NI ELVISmx SFP instruments additional featured instruments documentation and online resource links and personal file access When you install the NI myDAQ device the NI ELVISmx Instrument Launcher automatically opens To manually open the Instrument Lau
28. istance measurement Diode test Audible continuity test Make connections for measurements to the DMM banana jacks on the device This instrument has the following measurement parameters DC voltage 60 V 20 V 2 V and 200 mV ranges AC voltage 20 V 2 V and 200 mV ranges DC current 1 A 200 mA and 20 mA ranges AC current 1 A 200 mA and 20 mA ranges Resistance 20 MQ 2 MQ 200 KQO 20 KO 2 KQ and 200 Q ranges Diode 2 V range Resolution number of significant digits for display 3 5 Ee Digital Multimeter NI ELVISmx X We v as Lav Lo JirJam wJ Mode Banana Jack Connections Specify Range v Range Y v a a coo HI COM HI Null Offset Device Acquisition Mode Dev3 NI myDAQ v Run Continuously v Run Stop Help Le Jm j e Figure 12 NI ELVISmx Digital Multimeter SFP NI myDAQ User Guide and Specifications 20 ni com Oscilloscope Scope The NI ELVISmx Oscilloscope Scope displays voltage data for analysis This instrument provides the functionality of the standard desktop oscilloscope found in typical undergraduate laboratories The NI ELVISmx Oscilloscope SFP has two channels and provides scaling and position adjustment knobs along with a modifiable timebase The autoscale feature allows you to adjust the voltage display scale based on the peak to peak voltage of the AC signal for the best display of the signal The computer based scope disp
29. l no load eee eee 15 0 V Maximum voltage with no load 15 3 V Minimum voltage with full load 14 0 V Maximum output current eee 32 mA Maximum load capacitance 470 uF 5V Supply Output voltage Typical no load eee 4 9 V Maximum voltage with no load 5 2 V Minimum voltage with full load 4 0 V Maximum output current eee 100 mA Maximum load capacitance 33 uF Communication Bus interfaces inneni USB 2 0 Hi Speed Physical Characteristics Dimensions without screw terminal connector NI myDAQ device part number 195509D 01L and earlier 14 6 cm x 8 7 cm x 2 2 cm 5 75 in x 3 43 in x 0 87 in NI myDAQ device part number 195509E 01L and later 13 6 cm x 8 8 cm x 2 4 cm 5 36 in x 3 48 in x 0 95 in 1 The total power available for the power supplies analog outputs and digital outputs is limited to 500 mW typical 100 mW minimum Refer to the NI myDAQ Hardware Overview section for information on calculating the total power consumption of the components of your system NI myDAQ User Guide and Specifications 44 ni com Weight NI myDAQ device part number 195509D 01L and earlier 175 0 g 6 1 oz NI myDAQ device part number 195509E O1L and later 164 0 g 5 8 oz 3 Note NI myDAQ device part number P N 195509x 01L is located on the product label on the bottom of the device Screw terminal Wiring
30. lay has the ability to use cursors for accurate screen measurements This instrument has the following measurement parameters e Channel Source Channels AI 0 and AI 1 AudioInput Left and AudioInput Right You can use AI channels or AudioInput channels but not a combination of both e Coupling AI Channels support DC Coupling only AudioInput Channels support AC Coupling only e Scale Volts Div AI channels S V 2 V 1 V 500 mV 200 mV 100 mV 50 mV 20 mV 10 mV and for AudioInput Channels 1 V 500 mV 200 mV 100 mV 50 mV 20 mV 10 mV e Sample Rate The Max Sample Rate available for AI and AudioInput Channels 200 kS s when either one or both channels are configured e Timebase Time Div The available values for both AI and AudioInput channels 200 ms to 5 us Trigger settings Immediate and Edge Trigger Types are supported When using Edge Trigger Type you can specify a Horizontal Position of 0 100 3 Oscilloscope NI ELVISmx Bol Basic Settings Advanced Settings Source Source alo Alt 7 Enabled Enabled Scale Vertical Scale Vertical Yolts Div Position Div Volts Div Position Div 3 G G G 2v m 1v m Time Div Type Immediate m Devic Acquisition Mode Ri tinuously m Run Stop Print Help Cursorson gt i Wo Plan Graph E peh Autoscale LA E g e Figure 13 NI ELVISmx Oscilloscop
31. litude 6 0 1 1 1 1 0 0 a 15 0m 20 0m Time Channel 1 Out cen a 6 0 Amplitude I 1 1 1 5 0m 10 0m 15 0m 20 0m Time ta S E t Ap National Instruments Corporation 31 NI myDAQ User Guide and Specifications Using NI DAQmx with NI myDAQ NI myDAQ is supported by NI DAQm x and therefore you can program it using the DAQ Assistant Express VI Figure 20 shows the DAQ Assistant Express VI DAQ Assistant Figure 20 DAQ Assistant Express VI 3 Note In NI DAQmx DIO lt 0 7 gt appear as P0 lt 0 7 gt Furthermore you can use NI DAQmx to program some of the available general AI AO and timing functionality of the device Refer to the NI ELVISmx Help and NI DAQmx Help for more information 3 Note When using NI DAQmx to read the audio channels you must manually change the voltage range to 2 V from the default voltage range of 10 V The 10 V range is not supported by NI DAQmx and will cause an NI DAQmx error but it will not cause the user to receive corrupt data Example Measuring Audio Pass Through in LabVIEW with NI myDAQ This example covers the simultaneous acquisition of input signals and generation of output signals using the DAQ Assistant in LabVIEW This example forms the foundation for audio signal processing experimentation 1 Launch LabVIEW 2 Inthe Getting Started window click Blank VI A blank VI opens Select Window Show Block Diagram to open the VI block diagram 3 Locat
32. menus and tools Getting Started with LabVIEW Use this document as a tutorial to familiarize yourself with the LabVIEW graphical programming environment and the basic LabVIEW features you use to build data acquisition and instrument control applications This document contains exercises that you can use to learn how to develop basic applications in LabVIEW Multisim Getting Started with NI Circuit Design Suite Follow the tutorial in Chapter 2 of this manual to familiarize yourself with the basics of Multisim Multisim Help File This help file describes Multisim and its functions It is organized based on the stages of circuit design and explains all aspects of Multisim in detail This help file also provides detailed information about using NI ELVISmx instruments in Multisim The NI ELVISmx information is also found in the NI Multisim for Education manual Using NI ELVISmx Instruments in NI Multisim This help file contains tutorials and information on using NI ELVISmx instruments in NI Multisim to simulate data acquire data from hardware and compare simulated and acquired data To access this help file select Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ Using NI ELVISmx Instruments in NI Multisim NI myDAQ User Guide and Specifications 52 ni com NI DAQmx NI DAQmx Help tThis help file explains key NI DAQmx concepts describes how to create common applications and details device
33. n relevant HTS codes ECCNs and other import export data 2010 2011 National Instruments Corporation All rights reserved 373060E 01 Dec11
34. ncher navigate to Start All Programs National Instruments NI ELVISm x for NI ELVIS amp NI myDAQ NI ELVISmx Instrument Launcher This opens the suite of LabVIEW SFP instruments gt NI ELVISmx Instrument Launcher m e S Al e g re oe E ret EGI Tei Te Te EGI EGI DMM Scope FGEN Bode DSA DigIn DigOut j Featured Instruments Resources My Files C w Figure 11 NI ELVISmx Instrument Launcher To launch an instrument click the button corresponding to the desired instrument Select the NI myDAQ device from the Device control Some instruments perform similar operations using the same resources of the NI myDAQ hardware and therefore cannot run at the same time If you launch two instruments with overlapping functionality that cannot run at the same time the NI ELVISmx software generates an error dialog describing the conflict The instrument with the error is disabled and will not function until the conflict is resolved For information about possible resource conflicts refer to the Resource Conflicts section National Instruments Corporation 19 NI myDAQ User Guide and Specifications Digital Multimeter DMM The NI ELVISmx Digital Multimeter DMM is a stand alone instrument that controls the basic DMM capabilities of NI myDAQ This commonly used instrument can perform the following types of functions Voltage measurement DC and AC Current measurement DC and AC Res
35. nmentally responsible manner NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers For additional environmental information refer to the MI and the Environment Web page at ni com environment This page contains the environmental regulations and directives with which NI complies as well as other environmental information not included in this document Waste Electrical and Electronic Equipment WEEE EU Customers This symbol indicates that waste products must be disposed of separately from municipal household waste according to Directive 2002 96 EC of the European Parliament and the Council on waste electrical and electronic equipment WEEE All products at the end of their life cycle must be sent to a WEEE collection and recycling center Proper WEEE disposal reduces environmental impact and the risk to human health due to potentially hazardous substances used in such equipment Your cooperation in proper WEEE disposal will contribute to the effective usage of natural resources For information about the available collection and recycling scheme in a particular country go toni com citizenship weee ETARA mis Rib SEE CHE ROHS FAEI National Instruments 4AF E ETIR Ar mh SH ES SE ROHS KF National Instruments HE ROHS AWHEA R TER ni com environment rohs_china For information about China RoHS compliance go to ni com environment rohs_china
36. nnel 0 Enable and Channel 1 Enable checkboxes to measure both channels 7 If necessary click the Auto Setup button to automatically configure the oscilloscope parameters to acquire the signal or explicitly set the Sample Rate and Record Length You can also configure the measurement to acquire N samples or acquire Continuously If necessary adjust the controls to stabilize the signal in the graph Configuration Trigger Settings Advanced Configuratio Device Channelo Channel 1 Dev3 NI myDAQ Source Sample Rate S s Channel 0 Enable AIO M 100k Channel 1 Enable Range v Coupling Record length 56 D 2k Probe Acquire 1 NSamples v NI myDAQ User Guide and Specifications 30 ni com Click OK on the configuration window front panel On the block diagram right click the Channel 0 output terminal and select Create Graph Indicator from the menu This creates a Graph Indicator on the VI front panel to display the signal data Repeat this step for Channel 1 if you configured the NI ELVISmx Oscilloscope Express VI to enable Channel 1 myDAQ Channel 0 NI ELY ISmx Oscilloscope 10 Click the Run button to begin acquiring the measurement You should see the signal s in the graphs on the VI front panel 43 Untitled 1 Front Panel Jick File Edit Yiew Project Operate Tools Window Help gt I m 13pt Application Font 32 TaY t Hx 2 a Channel 0 Out cho AM 6 0 Amp
37. of floating signal sources are battery powered devices outputs of transformers thermocouples optical isolator outputs and isolation amplifiers An instrument or device that has an isolated output is a floating signal source You must connect the ground reference of a floating signal to an NI myDAQ AGND pin through a bias resistor or jumper wire to establish a local or onboard reference for the signal Otherwise the measured input signal varies as the source floats out of the common mode input range The easiest way to reference the source to AGND is to connect the positive side of the signal to AI and connect the negative side of the signal to AGND as well as to AI without using resistors This connection works well for DC coupled sources with low source impedance less than 100 Q NI myDAQ User Guide and Specifications 12 ni com Signal Source gt Resource lt 100 Q Figure 7 Differential Connections for Floating Signal Sources without Resistors For larger source impedances however this connection leaves the differential signal path significantly off balance Noise that couples electrostatically onto the positive line does not couple onto the negative line because it is connected to ground This noise appears as a differential mode signal instead of a common mode signal and thus appears in your data In this case instead of directly connecting the negative line to AGND connect
38. oting and application development self help resources to email and phone assistance from NI Application Engineers National Instruments corporate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the calling instructions or dial 512 795 8248 For telephone support outside the United States visit the Worldwide Offices section of ni com niglobal to access the branch office Web sites which provide up to date contact information support phone numbers email addresses and current events LabVIEW National Instruments NI ni com the National Instruments corporate logo and the Eagle logo are trademarks of National Instruments Corporation Refer to the Trademark Information at ni com trademarks for other National Instruments trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products technology refer to the appropriate location Help Patents in your software the patents txt file on your media or the National Instruments Patent Notice at ni com patents Refer to the Export Compliance Information at ni com legal export compliance for the National Instruments global trade compliance policy and how to obtai
39. owing measurement parameters Source Channel AI 0 and AI 1 AudioInput Left and AudioInput Right Voltage Range For AI channels 10 V 2 V For AudioInput channels 2 V 43 Dynamic Signal Analyzer NI ELVISmx la X Source Channel Voltage Range AlO v 10 x Frequency Span Mode 40000 RMS v Resolution lines Weighting 400 v Window None Units dB Scale Auto Run Cursors On Real 2 Real Mode RMS Maximum Dev1 NI myDAQ Stop Pi m j Exponential of Averages Sit Averaging Restart Minimurr Acquisition Mode Run Continuously nt g es v Help Figure 16 NI ELVISmx Dynamic Signal Analyzer SFP NI myDAQ User Guide and Specifications 24 ni com Arbitrary Waveform Generator ARB The NI ELVISmx Arbitrary Waveform Generator ARB generates a signal displayed as an electrical waveform This advanced level SFP instrument uses the AO capabilities of the device You can create a variety of signal types using the Waveform Editor software which is included with the NI ELVISmx software You can load waveforms created with the NI Waveform Editor into the ARB SFP to generate stored waveforms Refer to the NI ELVISmx Help for more information about the Waveform Editor To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NImyDAQ NI ELVISmx Help Since the device has two AO and two AudioOu
40. pressly approved by National Instruments could void your authority to operate it under your local regulatory rules NI myDAQ Hardware Overview NI myDAQ provides analog input AI analog output AO digital input and output DIO audio power supplies and digital multimeter DMM functions in a compact USB device Tip The Common Terms and Acronyms section has a list of acronyms and terms that you will see in this manual and in many engineering and measurement documents and websites Integrated circuits supplied by Texas Instruments form the power and analog I O subsystems of NI myDAQ Figure 2 depicts the arrangement and function of the NI myDAQ subsystems Refer to Table 5 for more information on all of the Texas Instruments components used in NI myDAQ NI myDAQ User Guide and Specifications 4 ni com Regulator gt 15 V 5 Current TPS61170 9 Protection Limiter res H gt 15V VBUS Circuit TPS2553 EON 8 kesb25s0202 e LH 5 V 8 H Rimer 8 gt amp DIO x Regulator ie Instrumentation pura WRB sare Gain Amplifier a i 4 Al 0 ADC TLE2082 OPA1642 annel j Al 1 1 2 V ADS8319 al Multiplexer lq Al 1 Regulator PUTA PEs See gym pate ay TPS62007 13 3 V aee neosid j Line In L PE usB STC3 DAC OP AMP gt DAC8551 OPA1642 gt AO 0 V Ears 3 OP AMP H Riens
41. rent uses such Interface as a digital input a digital output a timing input or a timing output National Instruments Corporation 53 NI myDAQ User Guide and Specifications Table 7 Commonly Used Acronyms Continued Acronym Definition Description SFP Soft front panel The software based user interface for your NI ELVISmx instrument VI Virtual Instrument A software program and hardware device that work together to create a user defined measurement system Warranty For customers other than private individual users in the EU The NI myDAQ is warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor For private individual users in the EU Based on your statutory rights National Instruments will through its distributor cure defects in materials and workmanship within two years from delivery For support visit the Worldwide Offices section of ni com niglobal to access the branch office Web sites which provide up to date distributor contact information Where to Go for Support The National Instruments Web site is your complete resource for technical support At ni com support you have access to everything from troublesho
42. rs 0 eeeeeeeeeeseeeneeeneeeeeeeees Programmed I O Update mode ssocssisorin geniuses Software timed Digital Multimeter Functions 0 eeececescecceccesscceeseceeceaeeeceaee DC voltage AC voltage DC current AC current resistance diode continuity Isolation level e eee ceeeeeeseeeseeeneeeneeees 60 VDC 20 Vms Measurement Category I 1 The total power available for the power supplies analog outputs and digital outputs is limited to 500 mW typical 100 mW minimum Refer to the NJ myDAQ Hardware Overview section for information on calculating the total power consumption of the components of your system 2 All AC specifications are based on sine wave RMS NI myDAQ User Guide and Specifications 40 ni com A Caution Do not use this device for connection to signals or for measurements within Measurement Categories II II or IV For more information on Measurement Categories refer to the Safety Voltages section Connectivity ienna Banana jacks Resol tion ecnim 3 5 digits Input coupling sseesseseeseeseeeereererereeee DC DC Voltage DC Current Resistance Diode Continuity AC AC Voltage AC Current Voltage Measurement DG fan Ses oninia 200 mV 2 V 20 V 60 V AC fanges 200 MV ms 2 Vims 20 Vims i Note All AC voltage accuracy specifications apply to signal amplitudes greater than 5 of range Accuracy Accuracy Function Range Resolution of Reading Offset
43. specific information needed to use NI DAQmx Other Resources e ni com mydag Contains product information support information and helpful links to tutorials examples curriculum videos and more e ni com 1v101 Contains learning modules for basic Core LabVIEW Concepts hardware connections and other measurement and analysis tasks Common Terms and Acronyms Table 7 lists some commonly used acronyms in data acquisition and measurement Table 7 Commonly Used Acronyms Acronym Definition Description ADC Analog to digital converter Device that converts analog signals into digital data AI AO Analog input analog output A continuous signal that conveys data from physical phenomena such as temperature strain pressure sound or light DAC Digital to analog converter Device that converts digital code into analog signals DAQ Data acquisition Measuring an electrical or physical phenomenon such as voltage current or temperature using a combination of hardware and software DIO Digital input output A non continuous signal that conveys data in digits or pulses that can be logged as digital data or converted into an analog signal for viewing GND Ground The ground or earth reference in a circuit MIO Multifunction input output The collective term for multiple measurements types such as AI AO DIO GND and power signals PFI Programmable Function A signal that can be configured for diffe
44. strument and choose between linear and logarithmic display scales You can also invert the measured values of the input signal during Bode analysis by inverting the Op Amp signal polarity Refer to the NI ELVISmx Help for required hardware connections To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISm x Help This instrument has the following measurement parameters e Stimulus measurement channel AI 0 e Response measurement channel AI 1 e Stimulus signal source AO 0 e Frequency range 1 Hz to 20 kHz Bode Analyzer NI ELVISmx Jog Stimulus Channel Response Channel AIO AI 1 Start Frequency 10 00 Hz Stop Frequency 2 50k Hz Steps 5 per decade Op Amp Peak Amplitude Signal Polarity 2 00 Normal w Mapping Logarithmic M Autoscale C Cursors On Position Left Right Cursor Real Device Dev1 NI myDAQ v Run Stop Print Log Help L gt Ls lelele Figure 15 NI ELVISmx Bode Analyzer SFP National Instruments Corporation 23 NI myDAQ User Guide and Specifications Dynamic Signal Analyzer DSA The NI ELVISmx Dynamic Signal Analyzer DSA performs a frequency domain transform of the AI or Audio Input waveform measurement It can either continuously make measurements or make a single scan You can also apply various window and filtering options to the signal This instrument has the foll
45. that features a fast 6 us response time and lt 1 2 nA max nanopower capability allowing operation from 1 8 V 5 5 V Operational Amplifier TLE2082 This is an operational amplifier more than double the bandwidth and triple the slew rate of the TLO7x and TLO8x families of BiFET operational amplifiers Operational Amplifier OPA1642 This is a JFET input ultra low distortion low noise operational amplifier fully specified for audio applications Audio Amplifier TPA6110A2 This is a stereo audio power amplifier packaged in an eight pin PowerPAD MSOP package capable of delivering 150 mW of continuous RMS power per channel into 16 loads Buffer SN74AUP1G17 This is a low power Schmitt Trigger buffer Switch TS12A44514 This is a low on state resistance quad SPST CMOS analog switch National Instruments Corporation 49 NI myDAQ User Guide and Specifications Resource Conflicts Table 6 summarizes the resource conflicts you might encounter if you run certain NI myDAQ circuitry simultaneously To use the information in Table 6 find the instrument you want to use in the left column That row lists all the functions that are resource conflicts If the intersecting box contains an you can use those functions simultaneously without any conflicts NI myDAQ User Guide and Specifications 50 ni com LS uoneiodiog sjuaunjsuy JeuoneN suoneayi2ads pue aping 3SN OYQAW IN Table 6 NI myDAQ Resource Conflic
46. the counter timer the Source is accessed through DIO 0 the Gate through DIO 1 the Auxiliary Input through DIO 2 the Output through DIO 3 and the Frequency Output through DIO 4 When using the counter timer as a quadrature encoder A Z and B correspond to DIO 0 DIO 1 and DIO 2 respectively In some instances the software may refer to the output lines as PFI as opposed to DIO Refer to Table 3 for a list of the corresponding counter timer signals assignments through the DIO terminals Table 3 NI myDAQ Counter Timer Signal Assignments Programmable Function Interface Counter Timer Quadrature Encoder NI myDAQ Signal PFI Signal Signal DIO 0 PFI 0 CTR 0 SOURCE A DIO 1 PFI 1 CTR 0 GATE Z DIO 2 PFI 2 CTR 0 AUX B DIO 3 PFI 3 CTR 0 OUT DIO 4 PFI 4 FREQ OUT Pulse width modulation PWM pulse train measurements are generated through DIO 3 National Instruments Corporation 17 For more information about event timing requirements refer to the Specifications section For more detailed information on using counter timers with NI myDAQ refer to the KnowledgeBase document How Do I Use the NI myDAQ Counter To access this document go to ni com info and enter the Info Code mydaqcounter NI myDAQ User Guide and Specifications Using NI myDAQ with Soft Front Panel SFP Instruments 3 Note Before opening a SFP make sure that the NI myDAQ device is connected to the system and
47. the negative line to AGND through a resistor that is about 100 times the equivalent source impedance The resistor puts the signal path nearly in balance so that about the same amount of noise couples onto both connections yielding better rejection of electrostatically coupled noise This configuration does not load down the source Signal Source a gt Resource gt 100 Q Figure 8 Differential Connections for Floating Signal Sources with a Single Resistor You can fully balance the signal path by connecting another resistor of the same value between the positive input and AGND as shown in Figure 9 This fully balanced configuration offers slightly better noise rejection but has the disadvantage of loading the source down with the series combination sum of the two resistors If for example the source impedance is 2 kQ and each of the two resistors is 100 KQ the resistors load down the source with 200 kQ and produce a 1 gain error National Instruments Corporation 13 NI myDAQ User Guide and Specifications Signal Source 2 Resource gt 100 Q Figure 9 Differential Connections for Floating Signal Sources with Two Resistors Both positive and negative analog input lines require a DC path to ground in order for the instrumentation amplifier to work If the source is AC coupled capacitively coupled a resistor is needed between the positive inp
48. tput channels two waveforms may be simultaneously generated You can choose to run continuously or run once This instrument has the following measurement parameters e Output Channels AO 0 and AO 1 AudioOutput Left and AudioOutput Right You can use AO channels or AudioOutput channels but not a combination of both e Trigger Source Immediate only This control will always be disabled 43 Arbitrary Waveform Generator NI ELVISmx m Output Channel Waveform Name Gain 400 v Menabled 2 square1000 wdt J clear 1 00 401 Enabled 1 sine1000 wdt E cLEAR 1 00 Update Rate 1 0k s s Click to Launch Device Generation Mode Run Stop Help Devi NI myDAQ Run Continuously v gt E 2 Figure 17 NI ELVISmx Arbitrary Waveform Generator SFP National Instruments Corporation 25 NI myDAQ User Guide and Specifications Digital Reader The NI ELVISmx Digital Reader reads digital data from the NI myDAQ digital lines NI ELVISmx Digital Reader groups the I O lines into ports through which data can be read You can read one port at a time either continuously or as a single reading The lines are grouped into two ports of four pins 0 3 and 4 7 or one port of eight pins 0 7 Digital Reader NI ELVISmx Load Lines to Read 4 7 M Device Acquisition Mode Dev3 NI myDAQ Run Continuously v Run Stop Help gt le Fig
49. ts DMM Scope AD Scope Audio FGEN Bode DSA AD DSA Audio Arb AO Arb Audio DI 4 Lines DI 8 Lines DO 4 Lines DO 8 Lines DMM Scope AD Scope Audio FGEN Bode DSA AD DSA Audio Arb AO Arb Audio DI 4 Lines DI 8 Lines DO 4 Lines DO 8 Lines No resource conflict x Conflict exists Additional Resources The following resources contain information you might find helpful Related Documentation The following documents contain information that you may find helpful as you use this manual NI ELVISmx NI ELVISmx Help tThis help file contains information about the NI ELVISmx software including information on using NI ELVISmx SFP instruments and NI ELVISmx Express VIs To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISmx Help LabVIEW LabVIEW Help this help file includes information about LabVIEW programming concepts step by step instructions for using LabVIEW and reference information about LabVIEW VIs functions palettes
50. ts such as operational amplifiers and linear regulators 5 V can be used to power digital components such as logic devices The total power available for the power supplies analog outputs and digital outputs is limited to 500 mW typical 100 mW minimum To calculate the total power consumption of the power supplies multiply the output voltage by the load current for each voltage rail and sum them together For digital output power consumption multiply 3 3 V by the load current For analog output power consumption multiply 15 V by the load current Using audio output subtracts 100 mW from the total power budget NI myDAQ User Guide and Specifications 6 ni com For example if you use 50 mA on 5 V 2 mA on 15 V 1 mA on 15 V use four DIO lines to drive LEDs at 3 mA each and have a 1 mA load on each AO channel the total output power consumption is 5 V x 50 mA 250 mW 1415 VI x 2 mA 30 mW I 15 VI x 1 mA 15 mW 3 3 V x 3 mA x 4 39 6 mW 15 V x 1 mA x 2 30 mW Total output power consumption 250 mW 30 mW 15 mW 39 6 mW 30 mW 364 6 mW Digital Multimeter DMM The NI myDAQ DMM provides the functions for measuring voltage DC and AC current DC and AC resistance and diode voltage drop DMM measurements are software timed so update rates are affected by the load on the computer and USB activity NI myDAQ Software Overview NI ELVISmx Driver Software NI ELVISmx is the driver software that supports N
51. ure 18 NI ELVISmx Digital Reader SFP NI myDAQ User Guide and Specifications 26 ni com Digital Writer The NI ELVISmx Digital Writer updates the NI myDAQ digital lines with user specified digital patterns NI ELVISmx Digital Writer groups the I O lines into ports through which data can be written You can write a 4 bit pattern 0 3 or 4 7 or an 8 bit pattern 0 7 You can also manually create a pattern or select predefined patterns such as ramp toggle or walking 1s This instrument can control a port of four or eight consecutive lines and either continually output a pattern or just perform a single write The output of the NI ELVISmx Digital Writer SFP stays latched until either another pattern is generated the lines it is using are configured for read or the power is cycled on the NI myDAQ National Instruments Corporation gt Digital Writer NI ELVISmx Wok Lines to Write 4 7 v Pattern Manual Manual Pattern F 3 x re Benen YY ae Lines 7 6 5 4 3 2 1 0 Action Direction Device Generation Mode Run Continuously Stop Help CEMO Figure 19 NI ELVISmx Digital Writer SFP 27 NI myDAQ User Guide and Specifications Example Measuring a Signal Using the NI ELVISmx Oscilloscope SFP with NI myDAQ Complete the following steps to measure a signal with the NI ELVISmx Scope SFP 3 Note Before opening a SFP make sure that the NI myDAQ device is connected to the system and
52. ut and AGND If the source has low impedance choose a resistor that is large enough not to significantly load the source but small enough not to produce significant input offset voltage as a result of input bias current typically 100 KQ to 1 MQ In this case connect the negative input directly to AGND If the source has high output impedance balance the signal path as previously described using the same value resistor on both the positive and negative inputs NI myDAQ DMM Fuse Replacement NI myDAQ has a fuse to protect the device from overcurrent through HI A current measurement input on the DMM If the DMM soft front panel SFP always reads 0 A current the cause may be a blown fuse Testing Your Fuse To test for a blown fuse complete the following steps 1 Using a banana cable connect the HI V and HI A DMM terminals 2 Launch the NI ELVISmx Digital Multimeter DMM Soft Front Panel instrument from the NI ELVISmx Instrument Launcher located at Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISmx Instrument Launcher r 3 Select the Resistance mode 4 Set the Range to 200 Q gt 5 Click Run 6 Ifthe fuse is blown the display will show Over indicating a disconnected circuit path Replace the fuse and complete the procedure again NI myDAQ User Guide and Specifications 14 ni com Replacing the Fuse Replace broken fuses with a 1 25 A Fast Acting sand filled 5 x 20 mm fus
53. utput channels on NI myDAQ These channels can be configured as either general purpose voltage output or audio output Both channels have a dedicated digital to analog converter DAC so they can update simultaneously In general purpose mode you can generate up to 10 V signals In audio mode the two channels represent left and right stereo outputs UN Caution If using earphones to listen to the audio output of the NI myDAQ ensure that the volume is set to a safe level Listening to audio signals at a high volume may result in permanent hearing loss Analog outputs can be updated at up to 200 kS s per channel making them useful for waveform generation Analog outputs are used in the NI ELVISmx Function Generator Arbitrary Waveform Generator and Bode Analyzer instruments Digital Input Output DIO There are eight DIO lines on NI myDAQ Each line is a Programmable Function Interface PFI meaning that it can be configured as a general purpose software timed digital input or output or it can act as a special function input or output for a digital counter Refer to Digital I O DIO and Counters Timers section for more information about the counter on NI myDAQ ay Note The digital I O lines are 3 3 V LVTTL and are tolerant to 5 V inputs The digital output is not compatible with 5 V CMOS logic levels Power Supplies There are three power supplies available for use on NI myDAQ 15 V and 15 V can be used to power analog componen
54. x in NI Multisim help file installed with NI ELVISmx To access this help file go to Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ Using NI ELVISmx in NI Multisim Getting Started UN Caution For EMC compliance the USB cable must be less than 2 0 m 6 6 ft in length Also wires attached to the MIO screw terminal connector must be limited to 30 0 cm 11 8 in in length Getting started with NI myDAQ is a simple process but it is important to ensure that you install the right components in the correct order To get started with your NI myDAQ complete the following steps 1 Install the NI myDAQ Software Suite from the DVD shipped with your device The NI myDAQ Software Suite installs application software NI LabVIEW NI Multisim first and then installs the NI ELVISmx driver software 3 Note Ifyou are not installing software from the NI myDAQ Software Suite media make sure to install all application software before installing the driver software 2 Connect the cable from the computer Hi Speed USB port to the USB port on the device The computer will recognize the NI myDAQ and the NI ELVISmx Instrument Launcher appears You can also manually open NI ELVISmx Instrument Launcher by selecting Start All Programs National Instruments NI ELVISmx for NI ELVIS amp NI myDAQ NI ELVISmx Instrument Launcher NI myDAQ User Guide and Specifications 8 ni com Making Signal Connections with
Download Pdf Manuals
Related Search