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NI ELVIS Hardware User Manual

1. ese ee ese see see ee ee ee ee ee ee ee 2 9 NI ELVIS Calibration Utility esse esse ese sesse ese ee Se ee ee e 2 9 National Instruments Corporation V NI ELVIS User Manual Contents NI ELVIS in Academic Disciplines see see see see see ee ke Se ke ee ee ee eene 2 10 NLELVIS in Engineering ette pe e inepte 2 10 NI ELVIS in Biological Sciences eese 2 10 NIELVIS 1n Physical Sciences 2 ete tette tetti 2 11 Chapter 3 Hardware Overview DAO Hatdswate z Eee ettet iste tete 3 1 Recommended DAQ Devices esses eene nnne 3 1 NI ELVIS Benchtop Workstation eese nennen neret 3 2 NI ELVIS Rear Panel tatit e e ea 3 5 NI ELVIS Protection Board eese 3 6 NI ELVIS Prototyping Board see see se ese ese ee ee ge ese ee ee ee sae eterne tnnt 3 6 Prototyping Board Power ee reete en rene 3 7 Prototyping Board Signal Descriptions see se ee ee 3 8 PFI Signal Descriptions sees se see Se ee aisida Re sa 3 11 Connecting Signals RA trente ete ped tete 3 11 Grounding Considerations eese enne 3 12 Connecting Analog Input Signals eese 3 12 Generic Analog Input seisein isois ee Ge ee Re ee 3 12 Resource Conflicts AE RE AE ei tren 3 13 DMM RE AE ER ERGE EO OE 3 14 OscilloScope RE e oes 3 14 Connecting Analog Output Signals esee 3 1
2. Full load refers to the maximum current output of the power supply Load regulation is linear over 0 to full load therefore at 50 of full load the output drops by 50 of the load regulation specification 2 Total current drawn from 15 V supply and variable power supplies cannot exceed 500 mA NI ELVIS User Manual A 2 ni com 5 V Supply Output current Output voltage esee Line regulation eee Load regulation esse Ripple and noise sss Digital 1 0 Resolution Digital input channels Digital output channels Digital addressing ss Digital Input isum orat pede M MD dE Digital Output Montanus o EN VoL AE EE EE AT EE C Appendix A Specifications Self resetting circuitry not to shut down at or below 2 A 5 V at 45 no load 0 50 max 22 typ 30 max 0 to full load 1 8 bits 8 bits 4 bits 1 0 LA max 2 0 V min 0 8 V max 3 38 V min at 6 mA 4 4 V min at 20 LA 0 86 V max at 6 mA 0 1 V max at 20 LA Full load refers to the maximum current output of the power supply Load regulation is linear over 0 to full load therefore at 50 of full load the output drops by 50 of the load regulation specification National Instruments Corporation A 3 NI ELVIS User Manual Appendix A DMM Specifications Capacitanc
3. aidjaid ca ca ca ca ca ca ca aid ca ca fg fg fg aid aid aid aid aid aid aid aid aid aid aid aid ao aid aid ca ca ca ca ca ca ca ca laid ca ao aid aid ca ca ca ca ca ca ca ca aid ca Conflict Codes aid DAQ Al different channels ais DAQ Al same channels ao DAQ AO No Resource Conflicts DAQ counter timers NI ELVIS vaiable power supplies NI ELVIS digital output fg NI ELVIS function generator ca NI ELVIS current amplifier NI ELVIS User Manual Figure D 1 Possible Resource Conflicts D 2 ni com Supported DAQ Devices The NI ELVIS workstation supports the DAQ devices listed in this appendix Supported M Series DAQ Devices NI ELVIS supports the following M Series DAQ devices NI 6221 68 pin NI 6225 NI 6229 NI 6251 NI 6255 NI 6259 NI 6281 NI 6289 3 Note Ifyou are using a PCI M Series device you must use NI ELVIS software version 2 0 or later USB M Series devices require NI ELVIS 3 0 or later When using an M Series DAQ device with two 68 pin connectors use connector 0 on the M Series DAQ device to make the connection to the NI ELVIS workstation Supported Using E B Series DAQ Devices NI ELVIS supports the following E B Series DAQ devices in addition to M Series DAQ devices National Instrum
4. 2 If NI ELVIS 3 0 or later is installed NI ELVIS is in the list of steps Expand NI ELVIS 3 Choose the instrument to add under Analog or Digital Acquire or Generate Signals 4 Click the Configure button to select the DAQ device cabled to the NI ELVIS Benchtop Workstation 5 Setthe various controls on the configuration panel appropriately for the measurement 6 Runthe SignalExpress project For more information about using NI ELVIS with SignalExpress refer to the NI SignalExpress Workbench Help which you can find through the Help menu in SignalExpress For more information about SignalExpress refer to the Getting Started with SignalExpress Guide NI ELVIS Calibration Utility The NI ELVIS 2 0 or later software includes a calibration utility that you can use to recalibrate the NI ELVIS variable power supplies and function generator circuitry National Instruments Corporation 2 9 NI ELVIS User Manual Chapter 2 NI ELVIS Overview NI ELVIS in Academic Disciplines You can use NI ELVIS in engineering physical sciences and biological sciences laboratories NI ELVIS is suitable not only in terms of the included software but also because of the custom signal conditioning hardware you can create with NI ELVIS Instructors can implement the NI ELVIS curriculum with beginning to advanced classes to provide hands on experience to students NI ELVIS in Engineering NI ELVIS is suited for teaching basic electronics
5. 3 8 specifications current measurement A 4 voltage measurement A 5 theory of operation C 1 DO lt 0 7 gt signals See also digital VO connecting digital I O signals 3 16 signal description table 3 9 NI ELVIS User Manual documentation conventions used in the manual iv related documentation 1 5 DSA resource conflicts table D 2 SFP overview 2 6 DSUB PIN signals signal description table 3 10 DSUB SHIELD signal signal description table 3 10 dynamic signal analyzer See DSA E electromagnetic compatibility specifications A 9 ELVIS See NI ELVIS F FGEN See function generator FM_IN signal See also function generator connecting analog output signals 3 15 signal description table 3 9 FUNC_OUT signal See also function generator connecting analog output signals 3 15 resistor pack B 4 signal description table 3 9 ni com function generator calibration utility 2 9 connecting signals 3 15 hardware controls description 3 3 controls location figure 3 2 overview 2 6 resource conflicts table D 2 signal descriptions table 3 9 specifications A 6 theory of operation C 6 fuses debugging the protection board B 2 location figure B 3 G GLB_RESET signal See also digital VO signal description table 3 9 GROUND signal See also DC power supplies variable power supplies connecting analog output signals 3 15 signal description table 3 9 H hardware connecting signa
6. DAQ Software OE e EED 1 3 LabVIEW SS Se E ee pe e eal Salton Ee e 1 3 Signal Express EE N OE OE ed 1 4 INE BEVIS OVERVIEW s 5th ee te diee od 1 4 Related Documentation neeo naen Eeden Dek Ge De eN ed sg daria ere ER Ek Reg bk eke 1 5 Chapter 2 NI ELVIS Overview NUBE VIS Hard Watson 2 2 NI ELVIS Benchtop Workstation esse cee ses see se see ee ke ee ke ee eee 2 2 NI ELVIS Prototyping Board cece eese nennen 2 3 NLEELVIS SoftWate 2 ER OE EE OO iia 2 3 SEP Instruments use t rer ip eet EET a id 2 3 Instrument Launcher eet nete entre eene poene e SENS 2 4 Arbitrary Waveform Generator ARB eene 2 4 Bode Analyzer oio aeneis iae bre tie epe 2 5 Digital Bus Reader ese ee ES EE eg Re e tens 2 5 Digital Bus Writef o he GN GE OE EED De Eg gee Ee ees 2 5 Digital Multimeter DMM eese 2 5 Dynamic Signal Analyzer DSA see 2 6 Function Generator FGEN sess 2 6 Impedance Analyzer sese 2 6 Oscilloscope Scope s es t e e t RE eH Ue 2 6 Two Wire and Three Wire Current Voltage Analyzers 2 7 Variable Power Supplies eee 2 7 Using NI ELVIS with LabVIEW sesse ese ese ese ee ese see eke Gee eke see Ge ee ee ee ee ee 2 7 Lab VIEW Express VIS et ee ee See ee SE nada Eed ee 2 7 Low Level NI ELVIS APL 2 8 Using NI DAQmx with NI ELVIS esse see eee 2 9 Using NI ELVIS in SignalExpress
7. Waveform Wire Current Generator Voltage Analyzer Ld gt gt a NI ELVIS Digital NI ELVIS 4 Writer Function Generator L 4 NIELVIS Digital Reader Low Level NI ELVIS API Before the NI ELVIS Express VIs were created the API consisted of the NI ELVIS instrument driver VIs now referred to as the Low Level NI ELVIS API which enabled you to programming the following components e Digital VO DIO e Digital Multimeter DMM e Function Generator FGEN e Variable Power Supplies VPS e Communication Bypass NI ELVIS User Manual 2 8 ni com Chapter 2 NI ELVIS Overview The NI ELVIS Express VIs expose all of the functionality for each instrument and are the recommended method for programming NI ELVIS in LabVIEW The Low Level NI ELVIS VIs are included to provide backwards compatibility for NI ELVIS applications written previous to NI ELVIS 3 0 Refer to the NJ ELVIS Help for more information about using the Low Level API to program NI ELVIS Using NI DAQmx with NI ELVIS Some general AI AO and timing functionality of the DAQ device is available through the NI ELVIS workstation and you can program it using NI DAQmx Refer to NI ELVIS Help and NI DAQmx Help for more information Using NI ELVIS in SignalExpress To use an NI ELVIS instrument within SignalExpress complete the following steps 1 Launch SignalExpress 1 Click the Add Step button
8. e NI PCI 6251 M Series DAQ device NI USB 6251 Mass Termination M Series DAQ device yl Note For a complete list of other supported DAQ devices refer to Appendix E Supported DAQ Devices Use one of the following cables to connect the NI ELVIS workstation e PCI M Series DAQ device SHC68 68 EPM SHC68 68 RC68 68 NI USB 6251 mass termination device SH68 68 EP National Instruments Corporation 3 1 NI ELVIS User Manual Chapter 3 Hardware Overview NI ELVIS Benchtop Workstation AN Caution Refer to the Read Me First Safety and Radio Frequency Interference document before removing equipment covers or connecting or disconnecting any signal wires This section describes the NI ELVIS Benchtop Workstation Refer to Figure 3 1 for the parts locator diagram for the control panel Y NATIONAL J INSTRUMENTS NI ELVIS VARIABLE POWER SUPPLIES FUNCTION GENERATOR DMM SCOPE O SUPPLY SUPPLY CURRENT VOLTAGE SYSTEM POWER MANUAL MANUAL MANUAL A AMPLITUDE AS u E o x VOLTAGE VOLTAGE sum 250 kHz fe AZ SZ BYPASS 500 Hz FREQUENCY i Q Q pre 6 CO ET oo 12 FREQUENCY SF SF FUSED AT 500 mA 20 VDC MAX s 1 System Power LED 5 Function Generator FGEN Controls 2 Prototyping Board Power Switch 6 DMM Connectors 3 Communications
9. three wire current voltage analyzer 2 7 two wire current voltage analyzer 2 7 variable power supplies 2 7 signal descriptions table 3 8 National Instruments Corporation Index 7 Index specifications analog input A 1 bode analyzer A 2 DC power supplies 5 V supply A 3 x15 V supply A 2 DMM current measurement A 4 voltage measurement A 5 electromagnetic compatibility A 9 function generator A 6 oscilloscope A 6 safety A 9 variable power supplies negative supply A 7 positive supply A 7 SUPPLY signal See also variable power supplies connecting analog output signals 3 15 signal description table 3 9 SUPPLY signal See also variable power supplies signal description table 3 9 SYNC_OUT signal See also function generator connecting analog output signals 3 15 resistor pack B 4 signal description table 3 9 system power LED figure 3 2 NI ELVIS User Manual Index T three wire current voltage analyzer resource conflicts table D 2 SFP overview 2 7 theory of operation C 13 TRIGGER signal See also oscilloscope signal description table 3 8 two wire current voltage analyzer resource conflicts table D 2 SFP overview 2 7 theory of operation C 12 U user configurable I O BANANA signals 3 9 BNC lt 1 2 gt signals 3 9 BNC lt 1 2 gt signals 3 9 connecting signals 3 16 DSUB pin lt 0 9 gt signals 3 10 DSUB shield 3 10 LED lt 0 7 gt signals 3 10 V va
10. Block Diagram Figure C 4 shows a basic block diagram of the NI ELVIS impedance analyzer The diagrams and paragraphs that follow Figure C 4 describe the circuitry for the CURRENT HI and CURRENT LO signals Impedance Analyzer Signal Path JM A B C NI ELVIS Motherboard Prototyping Board DAQ Device gt gt gt CURRENT HI O AI5 gt DUT CURRENT LO o AI7 Function Generator Figure C 4 Impedance Analyzer Block Diagram National Instruments Corporation C 7 NI ELVIS User Manual Appendix C Theory of Operation CURRENT HI The hardware connection to the CURRENT HI pin is shown in Figure C 5 The paragraphs that follow the figure describe each section of the figure in more detail Impedance Analyzer Signal Path gt A B C Prototyping Protection Board NI ELVIS Motherboard Board i i Fuses Switch CURRENT HI O l NO oC Benchtop Workstation MERE E Control i i i Panel AIS O Euren MUX Lo unction l MEN l Generator OVD Al 13 04 CURRENT HI D O i i DAQ Device Note This CURRENT HI signal routes first to the motherboard and then to the protection board as shown NI ELVIS User Manual Figure C 5 CURRENT HI Block Diagram NI ELVIS Motherboard The output of the NI ELVIS hardware funct
11. Electromagnetic interference External strobe signal Federal Communications Commission Function generator Glossary 4 ni com floating signal sources FM_IN FREQ OUT frequency front panel FUNC OUT G gain GPCTRO GATE GPCTRO OUT GPCTRO SOURCE GPCTR1_GATE GPCTR1_OUT GPCTR1_SOURCE GROUND National Instruments Corporation Glossary Signal sources with voltage signals that are not connected to an absolute reference or system ground Also called nonreferenced signal sources Some common example of floating signal sources are batteries transformers or thermocouples Frequency modulation input signal Frequency output signal The basic unit of rate measured in events or oscillations per second using a frequency counter or spectrum analyzer Frequency is the reciprocal of the period of a signal The user interface of a LabVIEW virtual instrument Output signal for the function generator The factor by which a signal is amplified sometimes expressed in decibels General purpose counter timer 0 gate signal available from a DAQ device General purpose counter timer 0 output signal available from a DAQ device General purpose counter timer 0 clock source signal available from a DAQ device General purpose counter timer gate signal available from a DAQ device General purpose counter timer 1 output signal available from a DAQ device General purpose counter timer 1 clock source s
12. Switch 7 Oscilloscope Scope Connectors 4 Variable Power Supplies Controls Figure 3 1 Control Panel Diagram of the Benchtop Workstation The benchtop workstation has the following controls and indicators e System Power LED Indicates whether the NI ELVIS is powered on Prototyping Board Power Switch Controls the power to the prototyping board e Communications Switch Requests disabling software control of the NI ELVIS In most applications set this switch to Normal to enable the computer to control NI ELVIS For more information about the Communications switch refer to Appendix F Using Bypass Communication Mode NI ELVIS User Manual 3 2 ni com National Instruments Corporation Chapter 3 Hardware Overview Variable Power Supplies Controls Supply Controls Manual Switch Controls whether the negative supply is in Manual mode or Software mode In Manual mode the voltage knob controls the negative power supply In Software mode the Variable Power Supply SFP controls the negative power supply Voltage Adjust Knob Controls the output of the negative supply The negative supply can output between 12 and 0 V You must set the Manual switch to Manual mode to use this knob Supply Controls Manual Switch Controls whether the positive supply is in Manual mode or Software mode In Manual mode the voltage knob controls the positive power supply In Software mode the Variable Power Supply SFP controls the positive powe
13. Voltmeter When you use the voltmeter differential channel seven of the DAQ device AI 7 and AI 15 is used to read the voltage signal from NI ELVIS NI ELVIS applies a gain of 0 5 to the voltages that are applied to VOLTAGE HI and VOLTAGE LO National Instruments Corporation C 1 NI ELVIS User Manual Appendix C Theory of Operation Block Diagram Figure C 1 shows a basic block diagram of the NI ELVIS voltmeter The paragraphs that follow the figure describe each section of the figure in more detail Voltmeter Signal Path p A B C D NI ELVIS Motherboard Prototyping Protection Board DAQ Device Board O Al 7 O MUX oA 15 VOLTAGE HI i i Benchtop Workstation 1 i Common 1 Control 1 1 Mode Rejection Adjustment Panel VOLTAGE HI NS VOLTAGELO Note This VOLTAGE HI and VOLTAGE LO signal routes first to the motherboard and then to the protection board where they are shorted to the signals as shown Figure C 1 NI ELVIS Voltmeter Block Diagram Prototyping Board and Benchtop Workstation Connectors The input to the NI ELVIS voltmeter circuit can come from the NI ELVIS Prototyping Board or from the connectors on the NI ELVIS Benchtop Workstation control panel When the prototyping board is powered off both connections remain active Protection Board The inputs to the voltmeter are not externa
14. and circuit design to students in electrical engineering mechanical engineering and biomedical engineering The suite offers full testing measurement and data saving capabilities needed for such training Students can use the removable prototyping board at home to build circuits thus using laboratory time more effectively NI ELVIS SFP instruments such as the Bode Analyzer offer instructors an opportunity to teach advanced courses in signal analysis and processing Students can construct software filters in LabVIEW and hardware filters on the prototyping board and compare the performance of those two types of filters Mechanical engineering students can learn sensor and transducer measurements in addition to basic circuit design by building custom signal conditioning Students can install custom sensor adapters on the prototyping board For example installing a thermocouple jack on the prototyping board allows robust thermocouple connections The programmable power supply can provide excitation for strain gauges used in strain measurements NI ELVIS in Biological Sciences N Caution The NI ELVIS hardware is not environmentally sealed therefore exercise caution for use in chemical and biological sciences NI ELVIS User Manual Biomedical engineering departments have challenges that are similar to those of mechanical departments Students typically learn basic electronics and build instruments such as an electrocardiogram ECG monit
15. best display of the signal Depending on the DAQ device cabled to the NI ELVIS hardware you can choose between digital or analog hardware triggering You can connect to the NI ELVIS Scope SFP from the NI ELVIS Prototyping Board or from the BNC connectors on the front panel of the benchtop workstation The FGEN or DMM signals can be internally routed to this instrument In addition this computer based scope display has the ability to use cursors for accurate screen measurements The sampling rate of the Oscilloscope is determined by the maximum sampling speed of the DAQ device installed in the computer attached to the NI ELVIS hardware Refer to the DAQ device documentation for information about the type of triggering supported on the device and for the maximum sampling speed specifications of the device 2 6 ni com Chapter 2 NI ELVIS Overview Two Wire and Three Wire Current Voltage Analyzers These instruments allow you to conduct diode and transistor parametric testing and view current voltage curves The two wire instrument offers full flexibility in setting parameters such as voltage and current ranges and can save data to a file In addition the three wire instrument offers base current settings for measurements of NPN transistors Refer to NJ ELVIS Help for connection details Both instruments have cursors for more accurate onscreen measurements Variable Power Supplies You can control the output of the positive or negative
16. convenient connectivity in the form of BNC and banana style connectors NI ELVIS User Manual 2 2 ni com Chapter 2 NI ELVIS Overview to the NI ELVIS Scope and NI ELVIS DMM The NI ELVIS software routes signals in the NI ELVIS Benchtop Workstation between the SFP instruments For example you can route the output of the function generator to a specific channel of the DAQ device and ultimately acquire data on a desired channel of the NI ELVIS Scope The benchtop workstation also contains a protection board that protects the DAQ device from possible damage resulting from laboratory errors Refer to the NJ ELVIS Benchtop Workstation section of Chapter 3 Hardware Overview for more detailed information about the benchtop workstation including the parts locator diagram NI ELVIS Prototyping Board The NI ELVIS Prototyping Board connects to the benchtop workstation The prototyping board provides an area for building electronic circuitry and allows the connections necessary to access signals for common applications You can use multiple prototyping boards interchangeably with the NI ELVIS Benchtop Workstation Refer to the NI ELVIS Prototyping Board section of Chapter 3 Hardware Overview for more information about the prototyping board including signal descriptions connection instructions and the parts locator diagram NI ELVIS Software The NI ELVIS software created in LabVIEW takes advantage of the capabilities of virtual in
17. device without interfering with NI ELVIS If you use an M Series DAQ device with additional DIO functionality on the second connector with NI ELVIS only port 0 of the DAQ device is reserved for NI ELVIS You can use the rest of the ports without a problem NI ELVIS User Manual G 2 ni com Glossary Symbol Prefix Value p pico 10 2 n nano 107 micro 10 6 m milli 107 k kilo 103 M mega 106 Symbols Percent Negative of or minus Positive of or plus Per i Degree Q Ohm Plus or minus y Square root A A Amperes AC Alternating current ACH Analog input channel signal ADDRESS The DIO output signals of the address bus O National Instruments Corporation Glossary 1 NI ELVIS User Manual Glossary Al AI GND AI SENSE AM AM IN amplification amplitude AO ARB block diagram BNC bode plot bus NI ELVIS User Manual Analog input Analog input ground signal Analog input sense signal Amplitude modulation the process in which the amplitude of a carrier wave is varied to be directly proportional to the amplitude of the modulating signal Amplification modulation input signal A type of signal conditioning that improves accuracy in the resulting digitized signal and reduces noise The voltage amplitude of a signal When speaking of the amplitude of a signal it is usually assumed to be the RMS value for an AC signal Howev
18. digital I O 3 16 overview 2 3 3 6 parts locator diagram 3 7 power supply 3 7 switch figure 3 2 signal descriptions table 3 8 theory of operation C 1 components figure 2 1 2 2 configuring 2 4 hardware overview 2 2 instrument launcher 2 4 LabVIEW API 2 8 overview 1 4 benchtop workstation 2 2 DAQ hardware 1 3 LabVIEW 1 3 prototyping board 2 3 parts locator diagram 2 1 2 2 software overview 2 3 theory of operation C 1 using in academic disciplines 2 10 2 11 oscilloscope connectors figure 3 2 connectors on benchtop workstation 3 4 overview 2 6 resource conflicts overview 3 13 table D 2 signal descriptions table 3 8 specifications A 6 P power supply DC See DC power supply prototyping board 3 7 variable See variable power supplies programmable function I O resistor pack B 4 NI ELVIS User Manual Index 6 ni com R RD_ENABLE signal See also digital VO signal description table 3 9 related documentation 1 5 removing protection board B 1 resistor packs location figure B 3 NI ELVIS components table B 4 resource conflicts table D 1 S safety specifications A 9 SCANCLK signal resistor pack B 4 Scope See oscilloscope SFP instruments ARB 2 4 bode analyzer 2 5 digital bus reader SFP 2 5 digital bus writer 2 5 DMM 2 5 DSA 2 6 FGEN 2 6 impedance analyzer 2 6 instrument launcher 2 4 overview 2 3 resource conflicts table D 2 Scope 2 6
19. e Gain 4 CURRENT LO i i i EE Gain H i Benchtop PET Workstation i Switch ain Control Panel 0 Al 7 i i MUX i f DO HO AI 15 CURRENTLO 7 7 Note This CURRENT LO signal routes first to the motherboard and then to the protection board as shown Figure C 6 CURRENT LO Block Diagram Prototyping Board and Benchtop Workstation Connectors When the NI ELVIS Prototyping Board is powered off the CURRENT LO pin from the prototyping board is disconnected The NI ELVIS Benchtop Workstation control panel connection is always connected Protection Board The signal from the DUT passes through a fuse on the protection board This fuse adds resistance to the measurement National Instruments Corporation C 9 NI ELVIS User Manual Appendix C Theory of Operation NI ELVIS Motherboard When the prototyping board is powered off the CURRENT LO pin from the prototyping board is disconnected You can switch the input path between impedance and current measurements by modifying the LabVIEW VIs that are included in the NI ELVIS source code You cannot measure impedance and current at the same time The input voltage across the DUT has a programmable gain applied NI ELVIS has four programmable gain ranges that you can select with the NI ELVIS Impedance Analyzer SFP The input to the op amp is protected from overvoltage and overcurrent conditions This protection should prevent damage to the op amp
20. meets the essential requirements of applicable European Directives as amended for CE marking as follows Low Voltage Directive safety 73 23 EEC Electromagnetic Compatibility Directive EMC sess 89 336 EEC yl Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column National Instruments Corporation A 9 NI ELVIS User Manual Protection Board Fuses This appendix describes the fuses on the NI ELVIS Protection Board and provides instructions on how to remove the protection board from the NI ELVIS Benchtop Workstation debug the protection board and change fuses Removing the Protection Board The protection board detaches from the NI ELVIS Benchtop Workstation as shown in Figure B 1 Refer to the Where to Start with NI ELVIS document for more parts locator diagrams of the NI ELVIS Benchtop Workstation 1 NI ELVIS Protection Board 2 NI ELVIS Benchtop Workstation Figure B 1 NI ELVIS Benchtop Workstation with Protection Board Removed National Instruments Corporation B 1 NI ELVIS User Manual Appendix B Protection Board Fuses Complete the following steps to remove the protection board from the benchtop workstation Refer to Figure B 1
21. models the appearance and function of a physical instrument The flexibility modular nature and ease of use programming possible with LabVIEW makes it popular in top university laboratories With LabVIEW you can rapidly create applications using intuitive graphical National Instruments Corporation 1 3 NI ELVIS User Manual Chapter 1 DAQ System Overview development and add user interfaces for interactive control Scientists and engineers can use the straightforward I O functionality of LabVIEW along with its analysis capabilities You can also use LabVIEW in the classroom to solve purely analytical or numerical problems For more information about programming with LabVIEW refer to Getting Started with LabVIEW and LabVIEW Fundamentals available at ni com manuals The LabVIEW Help is available by selecting Help Search the LabVIEW Help from the LabVIEW block diagram or front panel SignalExpress SignalExpress is an interactive standalone nonprogramming tool for making measurements You can use SignalExpress interactively for the following e Acquiring generating analyzing comparing importing and saving signals e Comparing design data with measurement data in one step e Extending the functionality of SignalExpress by importing a custom VI created in LabVIEW or by converting a SignalExpress project to a LabVIEW program so you can continue development in the LabVIEW environment For more information about SignalExpr
22. q O RAD E 8 O E 8 EA do manan geass g O z s l 33883 sees dE LE M lll else anseron goooo gooooo goooo gooooo Conr Counters o Opa alle BEBES s BEERS ollie alle BREBR s Banag olija BEE wero 9h amma como SB 9 8 60000 noooo elle slee Function swc our O o goooo ooooo la ol nunun ooooo 3 al ten my Bija Go Geass gls Sje Haaa eaaa ells Sii goooo ooooo ooooo ooooo b E mure cl Bons GESSO ale gls Besse e massa alfa Bu ud selo alle uuu ooooo la alle coo0o ooooo oll8 6 seseo pz BNC2 Configurable BS O Oo goooo nmm allo ojo goooo nnum ola Olou po 060 to melo ollo 000500 ooon olla olllo 00000 nonon ollka osuna f mes jo ollo goooo ooooo ollo ono nnunnnu 5 ooooo OFFS a owsms Lees al saaga memga ole ale maesa Boss CS Bue Supplies srono O Oo nunmu nnunu BIB og numnnu ooooo Sta Spam reun ON een es BIS BEBES paaga GE olje maaga maas el EES gos ME ED EIER EO Sie arame STA 5 say Mar up on o m 1 Al Oscilloscope and Programmable 6 DMM AO Function Generator Function I O Signal Rows User Configurable VO Variable Power Supplies DIO Signal Rows and DC Power Supplies Signal Rows LED Array 7 Power LEDs D SUB Connector 8 BNC Connectors Counter Timer User Configurable I O 9 Banana Jack Connectors and DC Power Supply Signal Rows OB EO ND Figure 4 3 Prototyping Board Part
23. technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMERS RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the National Instruments installa
24. variable power supply with these SFP instruments The negative power supply can output between 12 and O V and the positive power supply can output between O and 12 V Using NI ELVIS with LabVIEW This section provides an overview of using NI ELVIS with LabVIEW LabVIEW Express Vis When using NI ELVIS 3 0 or later many of the NI ELVIS instruments have an associated LabVIEW Express VI The Express VIs are the recommended method for programming NI ELVIS in LabVIEW 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 ELVIS Express VIs open a LabVIEW block diagram and select Instrument I O Instrument Drivers NI ELVIS from the function palette Table 2 1 shows the available NI ELVIS Express VIs Refer to the NI ELVIS Help for more information National Instruments Corporation 2 7 NI ELVIS User Manual Chapter 2 NI ELVIS Overview Table 2 1 NI ELVIS Express VIs NI ELVIS Express VI rw gt e 2 K NI ELVIS Two Wire Current Voltage Analyzer id Bode x NI ELVIS Bode NI ELVIS Analyzer Oscilloscope NI ELVIS Digital Multimeter dE di di di di di di dd n 3 1 r Fa Jn x 3 lb gt peu d NI ELVIS NI ELVIS Variable 4 4 Impedance Power Supplies NI ELVIS Analyzer Arbitrary MI ELVIS Three
25. voltage plus the common mode voltage Channel to earth esee x20 V Measurement Category I Channel to channel x20 V Measurement Category I N Caution Do not use for connection to signals in Categories II III or IV Environmental Operating temperature esse 0 to 40 C Storage temperature ese eee 20 to 70 C Humidity iiic EE EEN 10 to 90 relative humidity noncondensing Maximum altitude 2 000 m Pollution Degree indoor use only 2 NI ELVIS User Manual A 8 ni com Appendix A Specifications Safety NI ELVIS is designed to meet the requirements of the following standards of safety for electrical equipment for measurement control and laboratory use e TEC 61010 1 EN 61010 1 e UL61010 1 e CAN CSA C22 2 No 61010 1 3 Note For UL and other safety certifications refer to the product label or visit ni com certification search by model number or product line and click the appropriate link in the Certification column Electromagnetic Compatibility Emissions ees esse sesse ee ee ee ee EE EN 55011 Class A at 10 m FCC Part 15A above 1 GHz Immunity EE OE ti nbn EN 61326 1997 A2 2001 Table 1 EMC EMII enn CE C Tick and FCC Part 15 Class A Compliant SL Note For EMC compliance operate this device with shielded cabling In addition all covers and filler panels must be installed CE Compliance NI ELVIS
26. 3 12 connecting analog input signals 3 12 resistor pack B 4 signal description table 3 8 AM IN signal See also function generator connecting analog output signals 3 15 resistor pack B 4 signal description table 3 9 analog input connecting signals 3 12 resistor packs B 4 resource conflicts 3 13 signal mapping table 3 12 NI ELVIS User Manual Index software instruments bode analyzer SFP 2 5 DMM SFP 2 5 DSA SFP 2 6 impedance analyzer SFP 2 6 scope SFP 2 6 three wire current voltage analyzer SFP 2 7 two wire current voltage analyzer SFP 2 7 analog output connecting signals 3 14 hardware instruments function generator controls 3 3 overview 2 2 variable power supplies controls 3 3 overview 2 2 software instruments ARB SFP 2 4 FGEN SFP 2 6 variable power supplies 2 7 theory of operation C 15 API overview 2 8 ARB resource conflicts table D 2 SFP overview 2 4 theory of operation C 15 BANANA lt A D gt signals connecting user configurable I O signals 3 16 connector locations figure 3 7 signal description table 3 9 NI ELVIS User Manual Index 2 benchtop workstation controls and indicators 3 2 overview 2 2 parts locator diagram 3 2 removing protection board B 1 theory of operation C 1 BNC lt 1 2 gt signals connecting user configurable I O signals 3 16 signal description table 3 9 BNC lt 1 2 gt signals connecting user configurable I O signals 3 16
27. 4 Generic Analog OutPU ees seke se ke Se ee ee ee Re ee enne 3 14 DC Power Supplies ier rate Ee Eie 3 15 Function Generator FGEN sse 3 15 Variable Power Supplies ee 3 15 Bode Analyzer i EE EE eene epe inerte been 3 15 Two Wire Current Voltage Analyzer eee 3 15 Three Wire Current Voltage Analyzer esee 3 16 Impedance Analyzet ies suse dete t tete te 3 16 Connecting Digital VO Signals 3 16 Connecting Counter Timer Signals esee 3 16 Connecting User Configurable Signals eee 3 16 Chapter 4 Calibration Running the NI ELVIS Calibration Utility 4 1 NI ELVIS User Manual vi ni com Appendix A Specifications Appendix B Protection Board Fuses Appendix C Theory of Operation Appendix D Resource Conflicts Appendix E Supported DAQ Devices Appendix F Using Bypass Communication Mode Appendix G Common Questions Glossary Index Figures Figure 1 1 Typical DAQ System sesse see see ee ee ee ee Figure 2 1 Parts Locator Diagram for Desktop NI ELVIS Systems Figure 2 2 Parts Locator Diagram for USB NI ELVIS Systems Figure 3 1 Control Panel Diagram of the Benchtop Workstation Figure 3 2 Back View of NI ELVIS Benchtop Workstation Figure 3 3 Prototyping Board Parts Locator Diagram Contents Figure B 1 NI ELVIS Benchtop Workstation with Protection Board Removed B 1 Figure B 2 Par
28. B Series DAQ Device Routing esee E 3 NI ELVIS User Manual viii ni com DAQ System Overview The NI ELVIS User Manual contains information that you need to understand and program the National Instruments Educational Laboratory Virtual Instrumentation Suite NI ELVIS architecture and instruments It also discusses the concept of virtual instrumentation and the components of an NI data acquisition DAQ system This chapter briefly describes the concept of DAQ systems and introduces NI ELVIS a DAQ system designed for educational laboratories yl Note Refer to the Where to Start with NI ELVIS document for information about how to set up the components of the NI ELVIS What is Virtual Instrumentation Virtual instrumentation is defined as the combination of measurement and control hardware and application software with industry standard computer technology to create user defined instrumentation systems Virtual instrumentation provides an ideal platform for developing instructional curriculum and conducting scientific research In an instructional laboratory course students perform various experiments that combine measurements automation and control Tools or systems used in these situations must be flexible and adaptable In research environments virtual instrumentation provides the flexibility that a researcher must have to modify the system to meet unpredictable needs Research and instructional efforts also req
29. CH A 4 Oscilloscope CH B 5 DMM Capacitor Diode Tester 3 13 NI ELVIS User Manual Chapter 3 AN Hardware Overview DMM Both the CURRENT and VOLTAGE inputs are available on the prototyping board along with an additional terminal for three wire transistor measurements The differential voltmeter inputs are labeled VOLTAGE HI and VOLTAGE LO The rest of the functionality of the DMM is available through the CURRENT HI and CURRENT LO pins The 3 WIRE pin is used for three terminal device measurements in conjunction with the CURRENT HI and CURRENT LO pins If you are using the DMM you cannot use ACH 5 Caution By connecting different signals to both the DMM terminals on the prototyping board and the DMM connectors on the control panel you are shorting them together potentially damaging the circuit on the prototyping board Oscilloscope The inputs of the Oscilloscope are available on the prototyping board as CH lt A B gt CH A B and TRIGGER CH lt A B gt are directly connected to ACH3 and ACHA respectively on the DAQ device If you are using the scope you cannot use ACH 3 and 4 Caution By connecting different signals to the Scope terminals on the prototyping board and the Scope connectors on the control panel you are shorting them together potentially damaging the circuit on the prototyping board Connecting Analog Output Signals NI ELVIS User Manual This section describes how to connect the AO signals on
30. DAQ device VDC DC measurement of the voltage on differential channel seven VAC AC measurement of the voltage on differential channel seven Current AC Gain x JAC VDC Current DC VDC Offset x Gain Current AC or Current DC is displayed in the NI ELVIS software National Instruments Corporation C 5 NI ELVIS User Manual Appendix C Theory of Operation Function Generator Block Diagram NI ELVIS includes a hardware function generator The function generator can generate sine triangle and square waves You can modulate the output amplitude and frequency manually with software or using a combination of both Figure C 3 shows a basic block diagram of the NI ELVIS function generator The paragraphs that follow the figure describe each section of the figure in more detail Function Generator Signal Path A B C Prototyping Protection NI ELVIS Motherboard Board Board 1 Fuse Switch H FM 1 Amplitude XR2206 O DO o 50 Q MUX AM i 1 Control Panel j i Knob i i Wave Select FUNC OUT as o NI ELVIS User Manual Figure C 3 Function Generator Block Diagram Prototyping Board and Benchtop Workstation Connectors The function generator output signal FUNC_OUT is only on the prototyping board Protection Board On t
31. ELVIS User Manual Glossary R RD_ENABLE referenced signal sources resistance rms S S s SCANCLK Scope SFP SYNC_OUT T TIO TRIG trigger TRIGGER TTL NI ELVIS User Manual Read enable signal DIO output signal that indicates when data is being read from the read bus Signal sources with voltage signals that are referenced to a system ground such as the earth or a building ground Also called grounded signal sources The resistance to the flow of electric current One ohm Q is the resistance through which one volt of electric force causes one ampere to flow Root mean square Seconds Samples Samples per second used to express the rate at which a DAQ device samples an analog signal Scan clock signal Abbreviation for oscilloscope Soft front panel TTL signal of the same frequency of the function generator Timing I O Trigger signal Any event that causes or starts some form of data capture Trigger input signal for the oscilloscope Transistor to transistor logic Glossary 8 ni com VI VOLTAGE V p p W waveform WR_ENABLE Glossary Volt or volts Virtual instrument a combination of hardware and or software elements typically used with a PC that has the functionality of a classic stand alone instrument Input signals for the DMM voltmeter Peak to peak voltage Multiple voltage readings taken at a specific sampling rate DIO output signal that
32. NI Educational Laboratory Virtual Instrumentation Suite NI ELVIS Hardware User Manual April 2006 7 NATIONAL 373363D 01 N INSTRUMENTS Worldwide Technical Support and Product Information ni com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 683 0100 Worldwide Offices Australia 1800 300 800 Austria 43 0 662 45 79 90 0 Belgium 32 0 2 757 00 20 Brazil 55 11 3262 3599 Canada 800 433 3488 China 86 21 6555 7838 Czech Republic 420 224 235 774 Denmark 45 45 76 26 00 Finland 385 0 9 725 725 11 France 33 0 1 48 14 24 24 Germany 49 0 89 741 31 30 India 91 80 41190000 Israel 972 0 3 6393737 Italy 39 02 413091 Japan 81 3 5472 2970 Korea 82 02 3451 3400 Lebanon 961 0 1 33 28 28 Malaysia 1800 887710 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7 095 783 68 51 Singapore 1800 226 5886 Slovenia 386 3 425 4200 South Africa 27 0 11 805 8197 Spain 34 91 640 0085 Sweden 46 0 8 587 895 00 Switzerland 41 56 200 51 51 Taiwan 886 02 2377 2222 Thailand 662 278 6777 United Kingdom 44 0 1635 523545 For further support information refer to the Signal Conditioning Technical Support Information document To comment on National Instruments documentation refer to the National Instruments Web site at ni com info and enter the info code feedback 2003 2006 N
33. R1_OUTPUT Output PFI 13 P2 5 PFI Output or Static Digital Output Defaults to CTR 1 OUT in NI DAQmx FREQ OUT Output PFI 14 P2 6 PFI Output or Static Digital Output On M Series DAQ devices you can configure all of these signals as inputs or output however when used with the NI ELVIS workstation these signals are fixed direction either input or output Refer to the PFI Signal Descriptions section and the M Series DAQ device Help for more complete descriptions of these signals yl Note Refer to Appendix E Supported DAQ Devices for E Series DAQ device signal descriptions PFI Signal Descriptions PFI Input or Static Digital Input As a PFI input you can use these signals to supply an external source for AI AO DI and DO timing signals or counter timer inputs You can also use these signals as static digital inputs port 1 or port 2 PFI Output or Static Digital Output As a PFI output you can route many different internal AI AO DI or DO timing signals to each PFI output You also can route the counter timer outputs to each PFI output You can also use these signals as static digital outputs port 1 or port 2 Connecting Signals This section provides information about connecting signals between the NI ELVIS and the DAQ device Refer to Appendix D Resource Conflicts for a table showing possible resource conflicts when connecting NI ELVIS signals N Caution Refer to the Read Me First Safety and Radio Freq
34. S software functionality is available when the communications switch is set to Normal In Normal mode the DI and DO digital ports are accessed using the NI ELVIS DIO functions National Instruments Corporation F 1 NI ELVIS User Manual Appendix F Using Bypass Communication Mode Bypass Mode NI ELVIS User Manual When the NI ELVIS workstation is set to Bypass mode the eight digital I O lines on Port 0 of the DAQ device are routed directly to DI lt 0 7 gt on the NI ELVIS prototyping board In order to enable Bypass Mode you must first set the communications switch on the NI ELVIS workstation to Bypass and then execute the NI ELVIS Enable Communications Bypass VI from LabVIEW Figure F 1 shows the VI NI ELVIS Enable Communications Bypass vi m Figure F 1 NI ELVIS Enable Communications Bypass VI To access the DAQ device Digital I O lines after enabling Bypass mode you must use the NI DAQmx Digital I O functions Information about using these functions is available in the NI DA Qmx Help When the communications switch is set to Bypass mode communication to the NI ELVIS workstation is disabled therefore most NI ELVIS software functionality is unavailable in Bypass mode F 2 ni com Common Questions This appendix lists common questions related to the use of the NI ELVIS workstation Can I use the NI ELVIS SFP and the NI ELVIS API at the same time No Due to software conflicts yo
35. TEPS TO PROTECT AGAINST SYSTEM FAILURES INCLUDING BUT NOT LIMITED TO BACK UP OR SHUT DOWN MECHANISMS BECAUSE EACH END USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION INCLUDING WITHOUT LIMITATION THE APPROPRIATE DESIGN PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION Conventions lt gt Ez AN AX N bold DAQ device ELVIS italic monospace The following conventions are used in this manual Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name for example AO lt 3 0 gt The symbol leads you through nested menu items and dialog box options to a final action The sequence File Page Setup Options directs you to pull down the File menu select the Page Setup item and select Options from the last dialog box 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 When this
36. VAR PWR SUPPLY 3 O CURRENT HI RIS R14 OTOTYPING BOA D TO an O CURRENT LO FRONT PANEL O VAR PWR SUPPLY 6 POND 1 7 roa CURRENT LO M 9 95 M EROTOTYPING BOARD R ss GN 4 O S N fe dgro o ce o e o logros e Hazard seer co Isolated Baroness plastic chips Resistor ad NATIONAL m NI ELVIS AN o INSTRUMENTS PROTECTION BOARD o O Power Supply 5 415 V Current Limiting Circuitry Power Supply 6 15V Current Limiting Circuitry CURRENT Fuses Resistor Packs lt 1 8 gt 7 5 V Current Limiting Circuitry National Instruments Corporation Figure B 2 Parts Locator Diagram for NI ELVIS Protection Board B 3 NI ELVIS User Manual Appendix B Protection Board Fuses Table B 1 shows the relationship between the resistor packs and the NI ELVIS components Table B 1 Resistor Packs and NI ELVIS Components Resistor Pack NI ELVIS Component RP1 Anal
37. anically the same as a standard PCI connector The prototyping board exposes all the signal terminals of the NI ELVIS for use through the distribution strips on either side of the breadboard area Each signal has a row and the rows are grouped by function Refer to Figure 3 3 for the parts locator diagram for the prototyping board NI ELVIS User Manual 3 6 ni com Chapter 3 Hardware Overview ME TONAL U ll f NEWS INSTRUMENTS PROTOTYPING BOARD are lae ETER Beses ogg ase Sages DEBE els ET EL rn 28 8 8 ganso ages BIB Sils pene o gogog Bs geb eno amos c PS ale Haaaa canso o ole 66000 ooooo P3 el LED Amy TY sm la Sl Basso BEREA ol Ba Sassa aaaaa lS SI mou Jag O o goooo gooo oijo oo goooo ooooo ojja ole T ele pljas magee maaan gile alje 0855 gagga gji El See Billo agape s peage elle dg Bess Base ella Bs BANANA B eno a o 00000 aonoo ayo euo nanan goooo ofja alles Oscilloscope cus ello goooo ooooo ajja ea oooo0 nuuun els aj ie O llo ooooo0 nnnnn ole ale nnnm nnuunn elke el O i Progammbe re O S 8 gooog ooooo eje aje ooooo ooooo Sii ell w mo S 8 ooo y ooooo SI E nonoo v ooon IE ESO embo 8 gages posto Olle Ee els O o o o ooon nunuu ollo ollo ooooo ooooo oy o H o goooo ooooo ollo ale ooooo ooooo B s U 9 uuunn ooon glo oe uenuuennuuu
38. as needed 1 Unplug the power cable Refer to the Where to Start with the NI ELVIS document for an illustration of the switch location 2 Unplug the 68 pin cable and the power supply cable from the benchtop workstation 3 Disconnect the prototyping board from the benchtop workstation 4 Unscrew the captive screws located on the back of the NI ELVIS Protection Board 5 Gently pull on the captive screws to remove the protection board Debugging the Protection Board NI ELVIS User Manual The protection board provides a level of electrical protection between the prototyping board and the motherboard of the NI ELVIS workstation This protection consists of fuses for the high current signals such as the AO channels and DMM and 100 current limited resistors for the low current signals such as the AI channels and digital signals If too much current begins to flow to or from a particular signal on the prototyping board the fuse or resistor breaks down opening the connection electrically The 15 V 15 V and 5 V lines are protected by self resetting circuitry After the cause of the circuit problem is resolved the circuit resets To debug the protection board you need a DMM with an ohmmeter Complete the following steps to debug the protection board 1 Unplug the power cable 2 Remove the protection board assembly from the rest of the NI ELVIS workstation For instructions on removing the protection board refer
39. ational Instruments Corporation All rights reserved Important Information Warranty The NI ELVIS hardware 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 The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this document is accurate The document has been carefully reviewed for technical accuracy In the event that
40. d with the NI ELVIS workstation these signals are fixed direction either input or output Refer to the PFI Signal Description section and the E B Series DAQ device Help for more complete descriptions of these signals PFI Signal Description PFI You can use these signals to supply an external source for AL AO DI and DO timing signals or counter timer inputs National Instruments Corporation E 8 NI ELVIS User Manual Using Bypass Communication Mode This appendix describes the function of the Communications switch on the NI ELVIS workstation front panel In most applications set the communications switch to Normal The following DAQ device functions are routed directly to the prototyping board Analog input e Analog output Counter I O You can access these functions directly regardless of the position of the communications switch by using the native NI DAQmx functions supported by the DAQ device Refer to NJ DAQmx Help for more information When the Variable Power Supply and Function Generator are switched to Manual mode they are controlled directly by the controls on the NI ELVIS workstations and are not affected by the position of the communications switch Normal Mode When the communications switch on the NI ELVIS workstation is set to Normal the digital I O lines of the DAQ device are used for communicating to the NI ELVIS workstations and controlling its instruments from software All NI ELVI
41. de For more information about AI modes refer to the DAQ device documentation AIGND General AI Analog Input Ground AI ground reference for the DAQ device This ground signal is not connected to the NI ELVIS GROUND signals CH lt A B gt Oscilloscope Oscilloscope Channels A and B Positive input for the Oscilloscope channels CH A B Oscilloscope Oscilloscope Channels A and B Negative input for the Oscilloscope channels TRIGGER Oscilloscope Oscilloscope Trigger Trigger input for the Oscilloscope referenced to AI GND 3 WIRE DMM Three Wire Voltage source for the DMM for three wire transistor measurements CURRENT HI DMM Positive Current Positive input for the DMM for all measurements besides voltage The NI ELVIS is ground referenced CURRENT LO DMM Negative Current Negative input for the DMM for all measurements besides voltage The NI ELVIS is ground referenced VOLTAGE HI DMM Positive Voltage Positive input for the DMM voltmeter VOLTAGE LO DMM Negative Voltage Negative input for the DMM voltmeter DAC lt 0 1 gt Analog Outputs Analog Output Channels 0 and 1 For more information about the DAQ device analog output signals refer to the M Series Help and Appendix C Theory of Operation NI ELVIS User Manual 3 8 ni com Chapter 3 Table 3 1 Signal Descriptions Continued Signal Name Type Description FUNC_OUT Function Generator Function Output O
42. e Measurement ACCUTACY dien ee ete 1 R ng EE EE ee 50 pF to 500 uF in three ranges Test frequency sesse ESE ESE eiin 120 or 950 Hz software selectable Max test frequency voltage 1 Vp p Sine wave software selectable Continuity Measurement Resistance threshold 15 Q max software selectable Test voltage nin ER iii 3 89 V software selectable Current Measurement Accuracy AC ot sodes i tete Ln 0 25 3 mA 2 pom E 0 25 3 mA Common mode voltage 20 V max Common mode rejection 70 dB min Range atari GER Ree 4250 mA in two ranges max Re sol ti n eienenn EE EE Re 12 or 16 bits DAQ device dependent Shunt resistance ese sesse ee ee 0 5 9 Voltage burden ke ee 2 mV mA Diode Measurement Voltage threshold 1 1 V max 1 25 Hz to 10 kHz 2 Proper null correction when measuring on high common mode voltage can reduce the 3 mA offset error to 200 LA of noise 3 The Two Wire Current Voltage Analyzer SFP is the recommended instrument for diode measurement NI ELVIS User Manual A 4 ni com Inductance Measurement Accuracy Resistance Measurement Accuracy Voltage Measurement AC IA CCULACY AE teste Ue Range veces EE aded DC ACCUTA AM EE Range ete RU Input impedance sessss Dynamic Signal Analyzer In
43. e hardware and software components of the NI ELVIS Additionally this chapter discusses how you can use NI ELVIS in various academic environments Chapter 3 Hardware Overview provides more detailed information about NI ELVIS hardware components Refer to the NI ELVIS Help for more information about the software components Refer to Figures 2 1 and 2 2 for a diagram of the NI ELVIS systems 1 Desktop Computer 3 Shielded Cable to M Series Device 2 68 Pin M Series DAQ Device 4 NIELVIS Benchtop Workstation Figure 2 1 Parts Locator Diagram for Desktop NI ELVIS Systems National Instruments Corporation 2 1 NI ELVIS User Manual Chapter 2 NI ELVIS Overview 1 Laptop Computer 4 NI USB M Series Device Power Cord 2 USB Cable 5 Shielded Cable to M Series Device 3 NI USB M Series with Mass Termination Device 6 NI ELVIS Benchtop Workstation Figure 2 2 Parts Locator Diagram for USB NI ELVIS Systems NI ELVIS Hardware The following sections briefly describe the hardware components of NI ELVIS For more specific information about these components refer to Chapter 3 Hardware Overview NI ELVIS Benchtop Workstation Together the benchtop workstation and the DAQ device create a complete laboratory system The workstation provides connectivity and functionality The workstation control panel provides easy to operate knobs for the function generator and variable power supplies and it offers
44. ected from the configured DAQ device all instrument buttons are dimmed and the only available option is to click the Configure button Refer to the Where to Start with NI ELVIS document for more information about configuring NI ELVIS Some instruments perform similar operations using the same resources of the NI ELVIS hardware and the DAQ device 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 ELVIS software generates an error dialog describing the conflict The instrument with the error is disabled and will not function until the conflict is resolved Refer to Appendix D Resource Conflicts for more information about possible resource conflicts Arbitrary Waveform Generator ARB This advanced level SFP instrument uses the AO capabilities of the DAQ device You can create a variety of signal types using the Waveform Editor software which is included with the NI ELVIS software You can load waveforms created with the NI Waveform Editor into the ARB SFP to generate stored waveforms Refer to the NJ ELVIS Help for more information about the Waveform Editor Because a typical DAQ device has two AO channels two waveforms may be simultaneously generated You can choose continuous output or a single output The maximum output rate of the NI ELVIS ARB SFP is determined by the maximum update rate of the DAQ device connected to the NI ELVIS hardware R
45. efer to the DAQ device documentation for these specifications 2 4 ni com Chapter 2 NI ELVIS Overview Bode Analyzer By combining the frequency sweep feature of the function generator and the AI capability of the DAQ device a full function Bode Analyzer is available with NI ELVIS You can set the frequency range of the instrument and choose between linear and logarithmic display scales Refer to the NI ELVIS Help for required hardware connections Digital Bus Reader This instrument reads digital data from the NI ELVIS digital input DI bus You can either continuously read from the bus or you can take a single reading Digital Bus Writer This instrument updates the NI ELVIS digital output DO bus with user specified digital patterns You can manually create a pattern or select predefined patterns such as ramp toggle or walking 1s This instrument can either continually output a pattern or just perform a single write The output of the NI ELVIS Digital Bus Writer SFP stays latched until the instrument is stopped or another pattern is output Output voltage levels of the NI ELVIS DO bus are TTL compatible Digital Multimeter DMM This commonly used instrument can perform the following types of measurements e DC voltage e AC voltage Current DC and AC e Resistance e Capacitance e Inductance e Diode test e Audible continuity You can connect to the DMM from the NI ELVIS Prototyping Board or from the ba
46. endix F Using Bypass Communication Mode for information about using digital I O signals Connecting Counter Timer Signals The prototyping board provides access to the DAQ device counter timer inputs which are also accessible from software These inputs are used for counting TTL signals and for edge detection The CTRO_SOURCE CTRO_GATE CTRO_OUT CTR1_GATE and CTR1_OUT signals are connected to the default Counter 0 and Counter 1 PFI lines on the DAQ device refer to Table 3 2 Refer to the DAQ device documentation for details on using and configuring counter timers Connecting User Configurable Signals NI ELVIS User Manual The prototyping board provides several different user configurable connectors four banana jacks two BNC connectors and a D SUB connector Each pin of the connector has a connection to the distribution strips of the prototyping board 3 16 ni com Chapter 3 Hardware Overview Eight LEDs are provided for general digital output The anode of each LED is connected to the distribution strip through a 220 resistor and each cathode is connected to ground Refer to Table 3 1 for more information about the signal names for the user configurable I O connectors National Instruments Corporation 3 17 NI ELVIS User Manual Calibration Electronic components such as ADCs are characterized by nonlinearities and drift due to time and temperature Compensating for these inherent sources of error requires dev
47. ents Corporation NI 6014 NI 6024E NI 6036E NI 6040E PCI MIO 16E 4 E 1 NI ELVIS User Manual Appendix E Supported DAQ Devices e NI6052E e NI6070E PCI MIO 16E 1 The Arbitrary Waveform Generator functionality of NI ELVIS is not available with the NI 6014 NI 6024E or NI 6036E yl Note NI ELVIS supports all E Series devices that meet the criteria listed in the introduction to this appendix Use one of the following cables to connect the E B Series DAQ device to the NI ELVIS workstation e SH68 68 EP e R6868 NI ELVIS User Manual E 2 ni com Appendix E Supported DAQ Devices Table E 1 describes signals on the NI ELVIS prototype board that route directly to the E B Series DAQ device When using the NI ELVIS with an E B Series DAQ device refer to Table E 1 Table E 1 E B Series DAQ Device Routing Signal Name on Prototype Board Direction E B Series Signal Name Description PFI 1 Input PFI 1 See E B Series Help for PEL input PFI2 signal descriptions PFI 5 Input PFI 5 PFI 6 Input PFI 6 PFI 7 Input PFI 7 SCANCLK Output SCANCLK RESERVED Output EXT STROBE CTRO_SOURCE Input CTR 0 SRC CTRO_GATE Input CTR 0 GATE CTRO_OUTPUT Output CTR 0 OUT CTR1_SOURCE Input CTR 1 SRC CTR1_GATE Input CTR 1 GATE CTR1_OUTPUT Output CTR 1 OUT FREQ_OUT Output FREQ_OUT On E B Series DAQ devices you can configure all of these signals as inputs or output however when use
48. er to Appendix C Theory of Operation for more information about the output impedance configuration options 5 Hz to 35 kHz Refer to the Analog Input section of the DAQ device specifications documentation A 6 ni com Two Wire Current Voltage Analyzer C rrent Tange EE ies Voltage sweep range sss Three Wire Current Voltage Analyzer Minimum base current increment Maximum collector current Maximum collector voltage Variable Power Supplies Positive Supply Output voltage Ripple and noise sss Software controlled resolution Current limiting eee Negative Supply Output voltage Ripple and noise sss Software controlled resolution Current limiting eects This SFP instrument is intended for use only with NPN BJT transistors Appendix A Specifications 10 mA 10 V 15 uA 10 mA 10 V Oto 12V 0 25 7 bits 0 5 V at 160 mA 5 V at 275 mA 12 V at 450 mA 0to 12 V 0 25 7 bits 0 5 V at 130 mA 5 V at 290mA 12 V at 450mA 2 Total current drawn from 15 V and the negative variable power supply cannot exceed 500 mA National Instruments Corporation NI ELVIS User Manual Appendix A Specifications Physical Dimensions ees EE RE EE 31 75 x 30 48 x 12 7 cm 12 5 x 12 0 x 5 in Weight p 4 08 kg 9 0 Ib Maximum Working Voltage Maximum working voltage refers to the signal
49. er amplitude can also refer to the instantaneous amplitude or the peak peak to peak or average amplitude if so specified Analog output Arbitrary waveform generator Pictorial description or representation of a program or algorithm The block diagram consists of executable icons called nodes and wires that carry data between the nodes The block diagram is the source code for the VI The block diagram resides in the block diagram window of the VI A type of coaxial signal connector The plot of the gain and phase of a system as a function of frequency The group of conductors that interconnect individual circuitry in a computer Typically a bus is the expansion vehicle to which I O or other devices are connected An example of a PC bus is the PCI bus Glossary 2 ni com C C capacitance CH channel counter timer CTRO GATE CTRO OUT CTRO SOURCE CTR1_GATE CTR1_OUT CURRENT D D A DAC DAQ dB DC default setting National Instruments Corporation Glossary 3 Glossary Celsius The ability to hold an electrical charge Channel Pin or wire lead to which you apply or from which you read the analog or digital signal Analog signals can be single ended or differential For digital signals you group channels to form ports Ports usually consist of either four or eight digital channels A circuit that counts external pulses or clock pulses timing Counter O gate signal Counter O output signal C
50. er Signal Path gt A B C NI ELVIS Motherboard Prototyping Board DAQ Device gt gt 3 WIRE 9 AI 6 DAC1 DACO a gt gt CURRENT LO O AI 7 MA PL CURRENT HI o AI5 Figure C 8 Three Wire Measurement Block Diagram Internal Calculations NI ELVIS User Manual The following values are stored in the NI ELVIS EEPROM CA SLOPE Actual value of each feedback resistor four values The voltage generated on the 3 WIRE pin is from the DAQ device AO 1 This voltage is read on AI 6 internal to NI ELVIS This voltage is displayed as the Voltage Vc in the Three Wire Current Voltage Analyzer SFP The base current output on the CURRENT HI pin is from the DAQ device AO 0 The CURRENT HI pin is read on AI 5 as a voltage The DAQ device can only read voltage so the current is converted to voltage The voltage read is then converted back to current by using Ohm s Law For R use the NI ELVIS onboard 332 2 resistor and for V use the CH5 voltage Ib Amps CHS voltage The Base current Ib is not displayed on the SFP The input collector current is measured on the CURRENT LO pin of the prototyping board The CURRENT LO pin is read on AI 7 The DAQ device can only read voltage so the current is converted to voltage The NI ELVIS Impedance Analyzer circuitry is used to convert the current to voltage C 14 ni com Appendix C Theory of Operation The voltage read is t
51. er Supplies The variable power supplies provide adjustable output voltages from 0 to 12 V on the SUPPLY terminal and 12 to O V on the SUPPLY terminal The GROUND pin provides a connection to the same ground of the DC power supplies Bode Analyzer The NI ELVIS Bode Analyzer uses the Function Generator to output a stimulus and then uses analog input channels ACH 0 and ACH 1 to measure the stimulus and response On the prototyping board connect FUNC OUT to the input of the circuit and ACH 1 Connect the output to ACH 0 Two Wire Current Voltage Analyzer Connect the signal to Current Hi and Current Low when using the Two Wire Current Voltage Analyzer National Instruments Corporation 3 15 NI ELVIS User Manual Chapter 3 Hardware Overview Three Wire Current Voltage Analyzer The Three Wire Current Voltage Analyzer uses Current Hi Current Low and 3 wire to plot the current voltage response of a NPN BJT Table 3 5 NPN Transistor to Prototyping Board Connections NPN Transistor Node Prototyping Board Connections Collector 3 Wire Base Current Hi Emitter Current Low Impedance Analyzer Connect the signal to Current Hi and Current Low when using the NI ELVIS Impedance Analyzer Connecting Digital VO Signals The digital I O signals are TTL compatible Refer to Appendix A Specifications for information about the behavior of the DI and DO signals If you are using Bypass Mode refer to App
52. ess refer to Getting Started with SignalExpress available at ni com manuals and the NI Express Workbench Help available by selecting Help Express Workbench Help from the SignalExpress window NI ELVIS Overview NI ELVIS User Manual NI ELVIS uses LabVIEW based software instruments a multifunction DAQ device and a custom designed benchtop workstation and prototyping board to provide the functionality of a suite of common laboratory instruments The NI ELVIS hardware provides a function generator and variable power supplies from the benchtop workstation The NI ELVIS LabVIEW soft front panel SFP instruments combined with the functionality of the DAQ device and the NI ELVIS workstation provide the functionality of the following SFP instruments e Arbitrary Waveform Generator ARB e Bode Analyzer 1 4 ni com Chapter 1 DAQ System Overview Digital Bus Reader Digital Bus Writer Digital Multimeter DMM e Dynamic Signal Analyzer DSA Function Generator FGEN Impedance Analyzer e Oscilloscope Scope e Two Wire Current Voltage Analyzer e Three Wire Current Voltage Analyzer e Variable Power Supplies In addition to the SFP instruments NI ELVIS has a set of high level LabVIEW functions which you can use to customize your display and experiments to control the NI ELVIS workstation from LabVIEW With NI ELVIS 3 0 and later you can control the NI ELVIS instruments in a nonprogramming environment wi
53. gnals 3 14 fuses figure B 3 impedance analyzer theory of operation figure C 9 signal description table 3 8 theory of operation DMM C 3 three wire current voltage analyzer C 13 two wire current voltage analyzer C 12 DAC lt 0 1 gt signals See also analog output connecting analog output signals 3 14 fuses figure B 3 internally using caution 3 14 signal description table 3 8 theory of operation three wire current voltage analyzer C 13 two wire current voltage analyzer C 12 DAQ hardware definition 1 2 NI ELVIS components figure 2 1 2 2 overview 1 3 resource conflicts table D 2 theory of operation C 1 NI ELVIS User Manual Index DC power supplies prototyping board power 3 7 signal descriptions table 3 9 specifications 5 V power supply A 3 15 V supply A 2 debugging the protection board B 2 DI lt 0 7 gt signals See also digital VO connecting digital I O signals 3 16 signal description table 3 10 digital bus reader SFP 2 5 digital bus writer SFP 2 5 digital VO connecting signals 3 16 resistor packs B 4 resource conflicts D 1 signal descriptions table 3 9 3 10 software instruments digital bus reader 2 5 digital bus writer SFP 2 5 digital multimeter See DMM DMM connecting signals 3 14 connectors description 3 4 location figure 3 2 internally using the DACs caution 3 14 overview 2 5 resource conflicts table D 2 signal descriptions table
54. hat you can connect to the DAQ device to make the signal suitable for measurement or to improve accuracy or reduce noise The most common types of signal conditioning include amplification excitation linearization isolation and filtering DAQ hardware Hardware used to acquire measure and analyze data Software NI application software is designed to help you easily design and program measurement and control applications Figure 1 1 shows the components of a typical DAQ system 1 2 ni com Chapter 1 DAQ System Overview Data Acquisition and Analysis Hardware Conditioning Software Personal Computer Figure 1 1 Typical DAQ System DAQ Hardware The DAQ Hardware section of Chapter 3 Hardware Overview describes in greater detail the DAQ device used as part of the NI ELVIS Refer to the DAQ device documentation available at ni com manuals for specific information about the functionality and operation of the device DAQ Software The following sections describe the LabVIEW and SignalExpress software you can use with NI ELVIS LabVIEW LabVIEW is a graphical programming language frequently used for creating test measurement and automation applications LabVIEW uses icons instead of lines of text to create applications Unlike text based programming languages LabVIEW uses dataflow programming where the flow of data determines execution A virtual instrument VI is a LabVIEW program that
55. he protection board the function generator passes through a 100 current fused resistor NI ELVIS Motherboard NI ELVIS uses a monolithic function generator integrated circuit IC to generate waveforms This IC accepts frequency and amplitude modulation You can adjust the output amplitude C 6 ni com Appendix C Theory of Operation of the XR 2206 with an internal 8 bit MDAC or manually with a knob on the NI ELVIS Benchtop Workstation control panel The coarse frequency is set by using one of four frequency selection capacitors The fine frequency is adjusted by the adjusting the onboard 8 bit DAC The adjusted output signal is multiplexed into a unity gain circuit The output of the gain circuit runs through a 50 resistor NI ELVIS uses the function generator output signal FUNC_OUT after the 50 Q resistor for other internal instruments You can disconnect the function generator from the NI ELVIS Prototyping Board with the prototyping board power switch Impedance Analyzer The NI ELVIS Impedance Analyzer is an SFP instrument that can measure specific device under test DUT impedance characteristics NI ELVIS determines impedance using an AC sine wave source that is produced by the NI ELVIS function generator on the CURRENT HI pin to excite the DUT The resulting sine waves are measured on CURRENT HI and CURRENT LO The NI ELVIS Impedance Analyzer breaks out the phase magnitude resistance and reactance of the DUT
56. hen converted back to current by using Ohm s Law For R use the NI ELVIS feedback resistor CA Slope and for V use the CH7 voltage CH7 voltage Ic in Amps CA Slope The collector current is displayed as Current Ic A To determine the Beta 8 of the DUT use the following equation le P i B is not displayed on the SFP Arbitrary Waveform Generator Analog Output The NI ELVIS buffers the output from the DAQ device This buffer prevents damage to the DAQ device The NI ELVIS is protected against overvoltage and overcurrent conditions Figure C 9 shows a basic block diagram of the NI ELVIS AO circuitry The paragraphs that follow the figure describe each section of the figure in more detail DAG Device 10 KQ AO 0 1 AAN NI ELVIS Motherboard Prototyping 10 KO Board MAAN 15 15 100 pF i 209 100 Q WWW WWW DAC lt 0 1 gt 15 15 Figure C 9 Analog Output Block Diagram National Instruments Corporation C 15 NI ELVIS User Manual Appendix C Theory of Operation NI ELVIS User Manual Prototyping Board You can only access the output channels of the NI ELVIS DAC lt 0 1 gt on the prototyping board When the prototyping board is powered off the output is disconnected NI ELVIS Motherboard The DAQ device AO 0 and AO 1 are buffered on the NI ELVIS This buffer allows the NI ELVIS power supply to drive DACO and DAC1 on the p
57. ice self calibration To improve the accuracy of the system you should periodically calibrate both the NI ELVIS workstation and the M Series DAQ device Running the NI ELVIS Calibration Utility Complete the following steps to self calibrate the M Series DAQ device 1 Launch MAX Expand Devices and Interfaces Find the M Series DAQ device in the list of devices and interfaces Right click the appropriate M Series DAQ device Select Self Calibrate p Be ee pe To calibrate the NI ELVIS workstation run the calibration utility included in the NI ELVIS software from Start National Instruments NI ELVIS Calibration Wizard You can use the NI ELVIS Calibration WIzard to calibrate the Variable Power Supply and Function Generator iyi Note This calibration is only applied when using these instruments in software mode National Instruments Corporation 4 1 NI ELVIS User Manual Specifications This appendix lists the specifications of the NI ELVIS These specifications are typical after a 30 minute warm up time at 23 C unless otherwise noted 3 Note NI ELVIS includes a calibration utility so that you can recalibrate the circuitry for the variable power supplies and function generator Analog Input Refer to the Analog Input section of the DAQ device specifications documentation Arbitrary Waveform Generator Analog Output Number of output channels 2 Maximum frequency es
58. icon is marked on the product refer to the Read Me First Safety and Radio Frequency Interference document shipped with the product for precautions to take When symbol is marked on a product it denotes a warning advising you to take precautions to avoid electrical shock When symbol is marked on a product it denotes a component that may be hot Touching this component may result in bodily injury Bold text denotes items that you must select or click in the software such as menu items and dialog box options Bold text also denotes parameter names DAQ device refers to any National Instrument DAQ device that meets the conditions listed in Chapter 3 Hardware Overview Educational Laboratory Virtual Instrumentation Suite Italic text denotes variables emphasis a cross reference or an introduction to a key concept Italic text also denotes text that is a placeholder for a word or value that you must supply Text in this font denotes text or characters that you should enter from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions Contents Chapter 1 DAQ System Overview What is Virtual Instrumentation re ener nnne nenne 1 1 Wh tis DAQ i2 eate RS 1 2 DAG Hardware ss ss etre e iie e ee ete tede 1 3
59. ignal available from a DAQ device Prototyping board ground signal Glossary 5 NI ELVIS User Manual Glossary H hardware triggering VO in impedance inductance JFET L LabVIEW LATCH LED NI ELVIS User Manual A form of triggering where you set the start time of an acquisition and gather data at a known position in time relative to a trigger signal Hertz the number of scans read or updates written per second Input output the transfer of data to from a computer system involving communications channels operator interface devices and or data acquisition and control interfaces Inch or inches The electrical characteristic of a circuit expressed in ohms and or capacitance inductance The characteristic of a coil that generates a voltage due to changes in the current An inductor creates a voltage that is the derivative of the current while a capacitor creates a voltage that is the integral of the current Junction Field Effect Transistor A three terminal semiconductor device constructed with a PN junction at its input and a conducting channel as the output section The PN junction of the input section is reverse biased to provide an extremely high input resistance A graphical programming language DIO output signal that pulses when data is ready on the write bus Light emitting diode Glossary 6 ni com N NI DAQ NI DAQmx NPN transistor NRSE op amp PCB PCI peak to pea
60. ile on your CD or ni com patents WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS 1 NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN 2 IN ANY APPLICATION INCLUDING THE ABOVE RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY COMPUTER HARDWARE MALFUNCTIONS COMPUTER OPERATING SYSTEM SOFTWARE FITNESS FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION INSTALLATION ERRORS SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES TRANSIENT FAILURES OF ELECTRONIC SYSTEMS HARDWARE AND OR SOFTWARE UNANTICIPATED USES OR MISUSES OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED SYSTEM FAILURES ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS INCLUDING THE RISK OF BODILY INJURY AND DEATH SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE TO AVOID DAMAGE INJURY OR DEATH THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT S
61. indicates data is being written to the write bus National Instruments Corporation Glossary 9 NI ELVIS User Manual Index Symbols 5 V 5 V power supply prototyping board power 3 7 specifications A 3 5V signal See also DC power supplies connecting analog output signals 3 15 signal description table 3 9 fuse figure B 3 15 V 15 V signal See also DC power supplies signal description table 3 9 15 V signal See also DC power supplies connecting analog output signals 3 15 signal description table 3 9 15 V power supply prototyping board power 3 7 specifications A 2 15 V signal connecting analog output signals 3 15 fuses figure B 3 Numerics 3 WIRE signal See also DMM connecting analog input signals 3 14 fuse figure B 3 signal description table 3 8 three wire current voltage analyzer theory of operation C 13 National Instruments Corporation Index 1 A academic use of NI ELVIS 2 10 2 11 ACH lt 0 5 gt signals analog input signal mapping table 3 12 signal description table 3 8 ACH lt 0 5 gt signals analog input signal mapping table 3 12 signal description table 3 8 ADDRESS lt 0 3 gt signals See also digital I O resistor pack B 4 signal description table 3 10 AI GND signal analog input signal mapping table 3 12 connecting analog input signals 3 12 signal description table 3 8 AI SENSE signal analog input signal mapping table
62. ion generator is routed internally to the gain of the CURRENT HI pin The gain circuit labeled G in Figure C 5 provides a resistive element labeled R in Figure C 5 to always insure a minimum resistance CURRENT HI is routed to AI 5 for measurements Because the AI 5 voltage is measured after the onboard resistor the onboard resistor is not included in the calculations The output to the NI ELVIS Prototyping Board is controlled by the prototyping board power switch Protection Board tThe output of the CURRENT HI is fused for overcurrent protection Simple shorts should not blow the fuse C 8 ni com Appendix C Theory of Operation Prototyping Board and Benchtop Workstation Connectors When the NI ELVIS Prototyping Board is powered off the CURRENT HI pin from the prototyping board is disconnected however the NI ELVIS Benchtop Workstation control panel connection is always connected DAQ Device The DAQ device reads the reference sine wave on AI 5 The AI 5 voltage reading is the input from the NI ELVIS to the DUT CURRENT LO The hardware connection to the CURRENT LO pin is shown in Figure C 6 The paragraphs that follow the figure describe each section of the figure in more detail Impedance Analyzer Signal Path ee A B C D Prototyping Protection Board NI ELVIS Motherboard DAQ Device Board i i i i i Gain
63. k PFI PN National Instruments Corporation Glossary National Instruments driver software for DAQ hardware The latest NI DAQ driver with new VIs functions and development tools for controlling measurement devices A two junction bipolar semiconductor transistor with an N type negative ion collector and emitter and a P type positive ion base An NPN transistor is created by adding a thin layer of P type semiconductor material between two regions of N type material Nonreferenced single ended mode all measurements are made with respect to a common NRSE measurement system reference but the voltage at this reference can vary with respect to the measurement system ground Operational amplifier pre built amplifier modules that are general enough to be used almost anywhere an amplifier is needed Printed circuit board Peripheral Component Interconnect a high performance expansion bus architecture originally developed by Intel to replace ISA and EISA It is achieving widespread acceptance as a standard for PCs and workstations it offers a theoretical maximum transfer rate of 132 Mbytes s A measure of signal amplitude the difference between the highest and lowest excursions of the signal Programmable function input The simplest semiconductor structure It consists of a positive or P region containing positive ions in junction with a negative or N region containing negative electrons Glossary 7 NI
64. lly protected on the NI ELVIS Protection Board The two inputs are combined on the protection board and passed to the NI ELVIS motherboard NI ELVIS Motherboard The VOLTAGE HI and VOLTAGE LO input terminals are divided with 511 kQ input resistors A manual adjustment is made at the factory for common mode rejection The adjusted common mode rejection is typically above 80 dB NI ELVIS User Manual C 2 ni com Current Meter Appendix C Theory of Operation The operational amplifier used by NI ELVIS is a fully differential JFET input with a gain of 0 5 The input slew rate is typically 11 V us This high slew rate helps minimize AC signal distortion The internal NI ELVIS bus sets the differential channel seven multiplexer to read the voltmeter voltage You cannot run the voltmeter with any other DMM functions DAQ Device The DAQ device takes the voltage reading on differential channel seven and converts the raw voltage into the voltage reading that is displayed in the NI ELVIS software Internal Calculations The following values are stored in the NI ELVIS EEPROM e Gain Gain error correction for NI ELVIS and the DAQ device e Offset Offset error correction for NI ELVIS and the DAQ device These values are used when calculating voltage readings from the NI ELVIS To calculate the voltage read on differential channel seven use the following formula VOLTAGE HI VOLTAGE LO Voltage Read 5 The NI ELVIS software then pe
65. ls 3 11 DAQ definition 1 2 overview 1 3 fuses B 1 B 3 installation documentation 1 1 National Instruments Corporation Index NI ELVIS components benchtop workstation 3 2 DAQ device 3 1 overview figure 2 1 2 2 protection board 3 6 prototyping board 3 6 resource conflicts table D 2 specifications A 1 theory of operation C 1 VO connectors I O connector descriptions 3 16 location figure 3 7 signal descriptions table 3 8 impedance analyzer resource conflicts table D 2 SFP overview 2 6 theory of operation C 7 installation documentation location 1 1 instrument launcher 2 4 instrumentation virtual 1 1 L LabVIEW NI ELVIS software instruments 2 3 overview 1 3 virtual instrumentation 1 1 LATCH signal See also digital VO signal description table 3 9 launcher instrument 2 4 LED lt 0 7 gt signals connecting user configurable I O signals 3 17 signal description table 3 10 NI ELVIS User Manual Index N protection board NI ELVIS debugging B 2 overview 3 6 reinstalling B 4 removing the protection board B 1 theory of operation C 1 prototyping board connecting signals analog input DMM 3 14 generic analog input 3 12 grounding 3 12 oscilloscope 3 14 resource conflicts overview 3 13 table D 2 analog output DC power supplies 3 15 0 function generator 3 15 generic analog output 3 14 variable power supplies 3 15 counter timer signals 3 16
66. ltage Analyzer Three Wire Current Voltage Analyzer E o gt B gt g D oO c S ex 3 o 2 S o o un N ci E D S 229 o o o g o Dn gt 3 N b ds 9 S LI sf gZ 55 9 9 9 9 Tt PP 0 EE ou o N o m O O A BEE SE DY E a S E o o om S2 83875857575 SE E E 6 o o 96 ees 8S 5 ep 2 HSD 000 Boe os SS5EELBFZzO Q c ec ge Po fF Of OES TA BU os Lo c 2 2208 E ll I Il III ST 4 6 6 Om Ad SE 222222200757 y c c c o c Qa U co SD o 2 2 Lr O ABAAAABAAAER E E fg fg fg tg to fo to fg fg ao faltalftg fg fg fg fg Jao fg fg fg fg fg ao ao ao ao ao ao Jais aid aid aid aid aid aid aid aid aid aid aid ais aid aid aid aid aid aid aid aid aid aid aid ao aid aid ca ca ca ais ca ca ca aid ca ca fg fg fg aidjaid ca ca ca ais ca ca ca aid ca ca fg fg fg aidjaid ca ca ca ais ca ca ca aid ca ca fg fg fg aidjaid ca ca ca ais ca ca ca aid ca ca aid aid ais ais ais ais ca ca ca aid ca ca aid aid ca ca ca ca ca ca ca aid ca ca ao aid aid ca ca ca ca ca ca ca Jaid ca ca fg fg fg
67. ments LO The negative input for voltage measurements If you use the front panel DMM inputs do not use the DMM inputs on the prototyping board Caution By connecting different signals to both the DMM terminals on the prototyping board and the DMM connectors on the control panel you are shorting them together potentially damaging the circuit on the prototyping board hy Note The NI ELVIS DMM is ground referenced Oscilloscope Scope Connectors CHA BNC Connector The input for channel A of the Oscilloscope CHB BNC Connector The input for channel B of the Oscilloscope Trigger BNC Connector The input to the trigger of the Oscilloscope If you use the front panel scope inputs do not use the scope inputs on the prototyping board Caution By connecting different signals to the Scope terminals on the prototyping board and the Scope connectors on the control panel you are shorting them together potentially damaging the circuit on the prototyping board NI ELVIS User Manual 3 4 ni com Chapter 3 Hardware Overview NI ELVIS Rear Panel The NI ELVIS rear panel has the following components shown in Figure 3 2 e The workstation power switch Use this switch to completely power off the workstation e An AC DC power supply connection Use this connector to power the workstation e A 68 pin DAQ device connection Use this connector to attach the DAQ device to the workstation 1 Bench
68. nana style connectors on the front panel of the benchtop workstation National Instruments Corporation 2 5 NI ELVIS User Manual Chapter 2 NI ELVIS Overview NI ELVIS User Manual Dynamic Signal Analyzer DSA This instrument is especially useful in advanced electrical engineering and physics classes This instrument uses the analog input of the DAQ device to make measurements and can either continuously make measurements or make a single scan You can also apply various window and filtering options to the signal Function Generator FGEN This instrument provides you with choices 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 Impedance Analyzer This instrument is a basic impedance analyzer that is capable of measuring the resistance and reactance for passive two wire elements at a given frequency Oscilloscope Scope This instrument provides the functionality of the standard desktop oscilloscope found in typical undergraduate laboratories The NI ELVIS Scope SFP has two channels and provides scaling and position adjustment knobs along with a modifiable timebase You can also choose trigger source and mode settings The autoscale feature allows you to adjust the voltage display scale based on the peak to peak voltage of the AC signal for the
69. og Input Signal Mapping NI ELVIS Input Channel DAQ Device Input Channel ACHO AIO ACHO0 AI8 ACH1 ATI ACHI AI9 ACH2 AI2 ACH2 AI 10 ACH3 AI 3 ACH3 AI 11 ACH4 AI4 3 12 ni com Chapter 3 Hardware Overview Table 3 3 Analog Input Signal Mapping Continued NI ELVIS Input Channel DAQ Device Input Channel ACH4 AI 12 ACH5 AI5 ACH5 AT 13 AISENSE AI SENSE AIGND AI GND The following sections describe some special considerations for connecting the AI signals on the prototyping board including sections that specifically pertain to the Oscilloscope and DMM Resource Conflicts Some of the AI channels are used by the internal circuitry for other instruments but the majority of the time you can still use the channel You can use ACH lt 0 2 gt without interruption ACHS is interrupted if any of the impedance analyzing capabilities of the DMM such as the capacitance meter diode tester and so on are used If you are using the Oscilloscope disconnect any signals from ACH3 and ACHA to avoid double driving the channels For more information about possible resource conflicts refer to Appendix D Resource Conflicts Refer to Table 3 4 for AI channel resource conflicts Table 3 4 AI Channel Resource Conflicts National Instruments Corporation AI Channel Conflict 0 None 1 None 2 None 3 Oscilloscope
70. og input RP2 Analog input RP3 AM IN FUNC OUT SYNC OUT AI SENSE RP4 Counter timer I O RP5 Digital output RP6 Digital input RP7 SCANCLK programmable function I O RP8 ADDRESS lt 0 3 gt Reinstalling the Protection Board Reinstall the NI ELVIS Protection Board before resuming use of NI ELVIS To replace the protection board complete the following steps 1 NI ELVIS User Manual Reinsert the PCI connector of the protection board into the benchtop workstation rear connector Tighten the four captive screws located on the back of the protection board Plug in the 68 pin cable and the power supply Plug in the power cable Power on NI ELVIS B 4 ni com Theory of Operation This appendix provides additional information about the basic operation of the NI ELVIS circuitry for the DMM function generator impedance analyzer two and three wire current voltage analyzers and analog output SS Note To reduce measurement error calibrate the DAQ device before each session DMM Measurements The DAQ device is configured for differential measurement mode for all DMM measurements Each DMM reading is referenced to the NI ELVIS GROUND signal The NI ELVIS software typically sets the input signal limitations but some NI ELVIS SFP instruments allow you to manually change the limits 3 Note NI ELVIS does not support measuring signals with large common mode voltages You must ground reference floating signals
71. on CURRENT HI pin is from the DAQ device DACO The CURRENT HI pin is read on AI 5 and stored as the VOLTAGE V that is displayed The input current is measured on the CURRENT LO pin of the prototyping board The CURRENT LO pin is read on AI 7 The DAQ device can only read voltage so the current is converted to voltage The NI ELVIS Impedance Analyzer circuitry converts the current to voltage The voltage read is then converted back to current using Ohm s Law V IxR For R use the NI ELVIS feedback resistor CA Slope and for V use the AI 7 voltage CH7 voltage Measured Current in Amps CASI ope Measured Current is converted to milliamps and displayed Three Wire Current Voltage Analyzer The three wire measurement is made by using the DAQ device AO 0 and AO 1 to generate output voltages that you control The voltage is read before going into the DUT on AI 5 and Al 6 and then across the DUT on AI 7 The NI ELVIS Impedance Analyzer circuitry provides the feedback resistor that transforms the current flowing into the CURRENT LO pin into a voltage The CURRENT HI pin is the output current source for the DUT on the prototyping board This current is measured and converted to voltage by a 332 Q resistor on NI ELVIS The 3 WIRE pin is measured on AI 6 and is the source voltage that is swept National Instruments Corporation C 13 NI ELVIS User Manual Appendix C Theory of Operation Three Wire Current Voltage Analyz
72. onnected together The NI ELVIS prototype board includes signals that route directly to the M Series DAQ device Table 3 2 describes these signals Table 3 2 M Series DAQ Device Routing Signal Name on M Series Prototype Board Direction Signal Name Description PFI 1 Input PFI 1 P1 1 PFI Input or Static Digital Input PFI 2 Input PFI 2 P1 2 PFI Input or Static Digital Input PFI 5 Input PFI 5 P1 5 PFI Input or Static Digital Input PFI 6 Input PFI 6 P1 6 PFI Input or Static Digital Input PFI 7 Input PFI 7 P1 7 PFI Input or Static Digital Input SCANCLK Output PFI 11 P2 3 PFI Output or Static Digital Output RESERVED Output PFI 10 P2 2 PFI Output or Static Digital Output CTRO_SOURCE Input PFI 8 P2 0 PFI Input or Static Digital Input Defaults to CTR 0 SRC in NI DAQmx CTRO_GATE Input PFI 9 P2 1 PFI Input or Static Digital Input Defaults to CTR 0 GATE in NI DAQmx CTRO_OUTPUT Output PFI 12 P2 4 PFI Output or Static Digital Output Defaults to CTR 0 OUT in NI DAQmx NI ELVIS User Manual 3 10 ni com Chapter 3 Hardware Overview Table 3 2 M Series DAQ Device Routing Continued Signal Name on M Series Prototype Board Direction Signal Name Description CTR1 SOURCE Input PFI 3 P1 3 PFI Input or Static Digital Input Defaults to CTR 1 SRC in NI DAQmx CTR1_GATE Input PFI 4 P1 4 PFI Input or Static Digital Input Defaults to CTR 1 GATE in NI DAQmx CT
73. or The prototyping board offers signal conditioning capability for ECG sensors and the NI ELVIS SFP instruments are ideal for testing the circuits as students build the signal conditioning circuits 2 10 ni com Chapter 2 NI ELVIS Overview NI ELVIS in Physical Sciences Physics students typically learn electronics and circuit design theory NI ELVIS provides these students with the opportunity to implement these concepts Physics students sometimes need signal conditioning for common sensors such as photoelectric multipliers or light detector sensors Students can build high gain low noise circuits on the removable printed circuit board PCB and study them in modern physics labs National Instruments Corporation 2 11 NI ELVIS User Manual Hardware Overview This chapter describes the hardware components of NI ELVIS including the DAQ device the benchtop workstation and the prototyping board Appendix C Theory of Operation provides more information about the circuitry used for the different NI ELVIS measurements DAQ Hardware The NI ELVIS workstation is designed to work with National Instruments M Series DAQ devices which are high performance multifunction analog digital and timing I O devices for PCI bus computers Supported functions on DAQ devices include AI AO DIO and timing I O TIO Recommended DAQ Devices NI ELVIS software version 3 0 and later is recommended for use with the following DAQ devices
74. or the gain stage The output of the op amp is multiplexed to differential channel seven DAQ Device The DAQ device reads the output sine wave on differential channel seven The AI 7 reading is used as the signal reference B for the impedance measurements Internal Calculations NI ELVIS User Manual The following values are stored in the NI ELVIS EEPROM e Gain System gain error correction gain error correction for NI ELVIS and the DAQ device e Inductance Offset System inductance offset error correction NI ELVIS and the DAQ device e Capacitance Offset System capacitance offset error correction NI ELVIS and the DAQ device e CA Slope Actual calibrated value of each feedback resistor four values The software acquires two waveforms from differential channel seven the signal and AI 5 the reference channel and applies the following formula Referenced Amplitude Gain Amplitude ie Signal Amplitude C 10 ni com Appendix C Theory of Operation Gain Amplitude is combined with the feedback resistor used on the NI ELVIS to determine the impedance CA Slope is calibrated at the factory to determine the actual impedance for the feedback resistor CA Slope Impedance Z EE P 2 Gain Amplitude Z is combined with the phase to determine the resistive and reactive components of the DUT The phase difference of the acquired sine waves is measured in reference to AI 5 Reactance Zx cos Phase
75. ors The input to the NI ELVIS current meter circuit can come from the NI ELVIS Prototyping Board or from the connectors on the NI ELVIS Benchtop Workstation control panel When the prototyping board is powered off the CURRENT HI and CURRENT LO terminals from the prototyping board are disconnected and any current from the prototyping board stops flowing Protection Board The protection board has fuses for each channel These fuses handle overcurrent conditions NI ELVIS User Manual ni com Appendix C Theory of Operation NI ELVIS Motherboard A 0 5 current shunt resistor is used at the input of a difference amplifier to convert the current to a voltage The current meter is not adjusted for common mode rejection The common mode rejection of the current meter is determined by the difference amplifier The output voltage is multiplexed to differential channel seven DAQ Device The DAQ device takes the reading on differential channel seven and converts the voltage reading into the current that is displayed in the NI ELVIS software Internal Calculations The following values are stored in the NI ELVIS EEPROM e Gain Shunt resistor value gain error correction for NI ELVIS and the DAQ device are included e Offset System offset error correction includes NI ELVIS and DAQ device offset The voltage returned can represent AC or DC current The offset variable should remove most offset caused by NI ELVIS and or the
76. ounter O source signal Counter 1 gate signal Counter 1 output signal Input signals for current related measurements for the DMM Digital to analog D A converter Data acquisition Decibel the unit for expressing a logarithmic measure of the ratio of two signal levels dB 20log10 V1 V2 for signals in volts Direct current A default parameter value recorded in the driver In many cases the default input of a control is a certain value often 0 that means use the current default setting NI ELVIS User Manual Glossary DI differential input digital trigger DIO diode DMM DO DOC DSA DUT E ECG EEPROM ELVIS EMC EMI EXTSTROBE FCC FGEN NI ELVIS User Manual Digital I O input signals sent to the DI bus An analog input consisting of two terminals both of which are isolated from computer ground whose difference is measured A TTL level signal having two discrete levels a high level and a low level Digital VO A specialized electronic component with two electrodes called the anode and the cathode Digital multimeter Digital I O output signals from the DO bus Canadian Department of Communications Dynamic signal analyzer Device under test Electrocardiogram Electrically erasable programmable read only memory ROM that can be erased with an electrical signal and reprogrammed Educational Laboratory Virtual Instrumentation Suite Electromechanical compliance
77. put Lines 0 through 7 Output of the write bus These channels are used by the NI ELVIS Digital Bus Writer SFP to generate digital data WR ENABLB DIO Write Enable Active low signal that updates when DO lt 0 7 gt are updated LATCH DIO Latch Active low signal that pulses when data is ready on DO lt 0 7 gt GLB RESET DIO Global Reset Active low signal that is used to reset all of the NI ELVIS hardware settings RD ENABLE DIO Read Enable Active low signal that indicates data is being read from DI lt 0 7 gt National Instruments Corporation 3 9 NI ELVIS User Manual Hardware Overview Chapter 3 Hardware Overview Table 3 1 Signal Descriptions Continued Signal Name Type Description DI lt 0 7 gt DIO Digital Input Lines 0 through 7 Input to read bus These channels are used by the NI ELVIS Digital Bus Reader SFP to acquire digital data ADDRESS lt 0 3 gt DIO Address Lines 0 through 3 Output of address bus LED lt 0 7 gt User Configurable I O LEDs 0 through 7 Input to the LEDs DSUB SHIELD User Configurable I O D SUB Shield Connection to D SUB shield DSUB PIN lt 1 9 gt User Configurable I O D SUB Pins 1 through 9 Connection to D SUB pins 5 V DC Power Supply 5V Source Output of fixed 5 V power supply referenced to the GROUND signal GROUND DC Power Supply Ground Prototyping board ground These ground pins are c
78. put range issie E ENE RR Redes ey Input resolution 1 100 Hz to 10 kHz National Instruments Corporation A 5 Appendix A Specifications 1 100 uH to 100 mH 950 Hz software selectable 1 Vp p sine wave software selectable 1 5 Q to 3 MO in four ranges 120 Hz software selectable 1 Vp p sine wave software selectable 0 3 0 001 full scale 14 Vms in four ranges max 0 3 0 001 full scale max 20 V in four ranges max 1 MO x10 V in four ranges 12 or 16 bits DAQ device dependant NI ELVIS User Manual Appendix A Specifications Function Generator Frequency range eee Software controlled 5 Hz to 250 kHz in five ranges frequency resolution 0 896 Frequency set point accuracy 396 of range max Frequency read back accuracy 0 01 Output amplitude 42 5 V Software amplitude resolution 8 bits Offset Tan ge cose erem eid 5 V AM voltage eene 10 V max Amplitude modulation Up to 10096 EM voltage eterne rere 10 V max Amplitude flatness TODO KHZ si eso voeg erecti 0 5 dB T0250 KHz entr ns 3 dB Frequency modulation Output impedance sess Impedance Analyzer Oscilloscope NI ELVIS User Manual Measurement frequency range 5 of full scale max 50 guaranteed Ref
79. r supply Voltage Adjust Knob Controls the output of the positive supply The positive supply can output between 0 and 12 V You must set the Manual switch to Manual mode to use this knob For more information about the software controls for the NI ELVIS Variable Power Supplies SFP refer to the NJ ELVIS Help Function Generator Controls Manual Switch Controls whether the function generator is in Manual mode or Software mode In Manual mode the Function Selector Amplitude Knob Coarse Frequency Knob and Fine Frequency Knob controls the function generator In Software mode the FGEN SFP controls the Function Generator Function Selector Selects what type of waveform is generated NI ELVIS can generate sine square or triangle waves Amplitude Knob Adjusts the peak amplitude of the generated waveform Coarse Frequency Knob Sets the range of frequencies the function generator can generate Fine Frequency Knob Adjusts the output frequency of the function generator 3 3 NI ELVIS User Manual Chapter 3 Hardware Overview For more information about the software controls for the function generator refer to the NI ELVIS Help DMM Connectors CURRENT Banana Jacks e HI The positive input to all the DMM functionality except measuring voltage e LO The negative input to all the DMM functionality except measuring voltage VOLTAGE Banana Jacks e HI The positive input for voltage measure
80. rforms the following calculations Voltage Returned DC Voltage Read Offset x Gain Voltage Returned AC Gain x VAC VDC Voltage Returned is displayed in the NI ELVIS software When you use the current meter differential channel seven of the DAQ device AI 7 and AI 15 is used to read the current from NI ELVIS The current read from NI ELVIS is referenced to the NI ELVIS GROUND signal The current is measured across the CURRENT HI and CURRENT LO terminals The current flowing across the shunt is converted to voltage by a difference amplifier National Instruments Corporation C 3 NI ELVIS User Manual Appendix C Theory of Operation Block Diagram Figure C 2 shows a basic block diagram of the NI ELVIS current meter The paragraphs that follow the figure describe each section of the figure in more detail A Prototyping Board CURRENT HI O Current Meter Signal Path B Protection Board Switches oco C NI ELVIS Motherboard Shunt Diff Amp CURRENT LO o Benchtop Workstation Control Panel CURRENT HI CURRENT LO Note This CURRENT Hl and CURRENT LO signal routes first to the motherboard and then to the protection board as shown gt D DAQ Device MUX Figure C 2 NI ELVIS Current Meter Block Diagram Prototyping Board and Benchtop Workstation Connect
81. riable power supplies calibration utility 2 9 fuses figure B 3 hardware controls description 3 3 figure 3 2 overview 2 7 resource conflicts D 1 signal descriptions table 3 9 specifications negative supply A 7 positive supply A 7 NI ELVIS User Manual Index 8 virtual instrumentation 1 1 VOLTAGE HI signal See also DMM connecting analog input signals 3 14 DMM theory of operations C 1 signal description table 3 8 VOLTAGE LO signal See also DMM connecting analog input signals 3 14 DMM theory of operations C 1 signal description table 3 8 W WR ENABLE signal See also digital I O signal description table 3 9 ni com
82. rototyping board The DAQ device provides the voltage but not the current The output signal is not adjusted for offset caused by NI ELVIS Refer to the Arbitrary Waveform Generator Analog Output section of Appendix A Specifications for further details DAQ Device The DAQ device must have analog output capability to use the NI ELVIS analog output In order to generate waveforms or patterns the DAQ device must have buffered output C 16 ni com Resource Conflicts Figure D 1 summarizes the resource conflicts you might encounter if you run certain NI ELVIS circuitry simultaneously The variable power supplies and digital circuitry are not included in this figure because they do not create any resource conflicts To use the information in Figure D 1 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 National Instruments Corporation D 1 NI ELVIS User Manual Appendix D Resource Contlicts Function Generator Base Function Generator Ultrafine Function Generator Modulated ARB DAC lt 0 1 gt Oscilloscope Dynamic Signal Analyzer DMM Continuity Tester DMM Resistance Meter DMM Capacitance Meter DMM Inductance Meter DMM Voltmeter DMM Ammeter DMM Diode Tester Impedance Analyzer Bode Analyzer Two Wire Current Vo
83. s Locator Diagram Prototyping Board Power The prototyping board provides access to a x15 V and a 5 V power supply You can use these voltage rails to construct many common circuits Refer to Appendix A Specifications for more information about these voltage rails If any of the power LEDs are not lit when the prototyping board power is enabled refer to Appendix B Protection Board Fuses for details about replacing NI ELVIS fuses National Instruments Corporation 3 7 NI ELVIS User Manual Chapter 3 Hardware Overview Prototyping Board Signal Descriptions Tables 3 1 and 3 2 describe the signals on the NI ELVIS prototyping board The signals are grouped by the functionality section where they are located on the prototyping board Table 3 1 Signal Descriptions Signal Name Type Description ACH lt 0 2 gt General AI Analog Input Channels 0 through 2 Positive and negative input channels to differential AI channel ACH lt 3 4 gt General AI Analog Input Channels 3 and 4 Positive and negative input channels to differential AI channel If you are using the oscilloscope you cannot use ACH lt 3 4 gt ACH 5 General AI Analog Input Channel 5 Positive and negative input channel to differential AI channel If you are using the DMM you cannot use ACH 5 AI SENSE General AI Analog Input Sense Reference for the analog channels in nonreferenced single ended NRSE mo
84. ses DC to DAQ device AO update rate 10 Full power bandwidth 27 kHz Output amplitude 10 V Resolution eeeeeee 12 bits or 16 bits DAQ device dependent Output drive current eee 25 mA Output impedance 00 eee eters 1Q SLEW rate Pere 1 5 V us The Arbitrary Waveform Generator does not work with the NI 6014 NI 6024E or NI 6036E National Instruments Corporation A 1 NI ELVIS User Manual Appendix A Specifications Bode Analyzer Amplitude accuracy ees ese se se Phase accuracy eene Frequency range eee DC Power Supplies 15 V Supply Output current eese Output voltage eee Line regulation eene Load regulation esses Ripple and noise ssssss 15 V Supply Output current esee Output voltage esee Line regulation eee Load regulation eese Ripple and noise esssss 12 or 16 bits DAQ device dependent 1 degree 5 Hz to 35 kHz Self resetting circuitry not to shut down at or below 500 mA 15 V at 5 no load 0 5 max 1 typ 5 max 0 to full load 1 Self resetting circuitry not to shut down at or below 500 mA 15 V at 45 no load 0 5 max 1 typ 5 max 0 to full load
85. ses the same circuitry You can select electrolytic and normal capacitors To get more accurate readings on electrolytic capacitors the function generator output frequency is set to 120 Hz and the amplitude is locked at 2 Vp p with a DC offset of 2 5 V For normal capacitors the function generator output frequency is set to 950 Hz and the amplitude is locked at 1 Vp p These settings allow a focused calibration that reduces resistive and capacitive offset Two Wire Current Voltage Analyzer The two wire measurement is made by using the DAQ device AO 0 signal to generate a user controlled voltage sweep The voltage is read before the DUT on AI 5 and then across the DUT on AI 7 The NI ELVIS Impedance Analyzer circuitry provides the feedback resistor that transforms the current flowing into the CURRENT LO pin into a voltage The CURRENT HI pin is the output voltage source on the prototyping board and benchtop workstation control panel Two Wire Current Voltage Analyzer Signal Path gt A B C NI ELVIS Motherboard Prototyping Board DAQ Device DACO TN CURRENT HI O AI 5 MA DUT CURRENT LO 0 Al7 NI ELVIS User Manual Figure C 7 Two Wire Measurement Block Diagram C 12 ni com Appendix C Theory of Operation Internal Calculations The following values are stored in the NI ELVIS EEPROM CA Slope Actual value of each feedback resistor four values The voltage output
86. signal description table 3 9 bode analyzer resource conflicts table D 2 SFP overview 2 5 specifications A 2 bypass mode communications switch location figure 3 2 overview 3 2 C calibration utility 2 9 CH lt A B gt signals See also oscilloscope signal description table 3 8 CH lt A B gt signals See also oscilloscope connecting analog input signals 3 14 signal description table 3 8 communications switch location figure 3 2 overview 3 2 configuring NI ELVIS 2 4 ni com conflicts resources table D 1 connecting signals on the prototyping board analog input DMM 3 14 generic analog input 3 12 grounding 3 12 oscilloscope 3 14 resource conflicts overview 3 13 table D 2 analog output DC power supplies 3 15 function generator 3 15 generic analog output 3 14 variable power supplies 3 15 counter timer signals 3 16 digital I O 3 16 user configurable signals 3 16 connectors See I O connectors conventions used in the manual iv counter timers connecting signals 3 16 resistor pack B 4 resource conflicts table D 2 CURRENT HI signal See also DMM connecting analog input signals 3 14 fuses figure B 3 signal description table 3 8 theory of operation DMM C 3 impedance analyzer C 8 three wire current voltage analyzer C 13 two wire current voltage analyzer C 12 National Instruments Corporation Index CURRENT LO signal See also DMM connecting analog input si
87. strumentation The software includes SFP instruments the LabVIEW API and SignalExpress blocks for programming the NI ELVIS hardware SFP Instruments NI ELVIS ships with the 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 The instruments are virtual instruments VIs that are necessary in typical laboratory applications yl Note For a detailed explanation of the SFP instruments and instructions for taking a measurement with each instrument refer to the NJ ELVIS Help National Instruments Corporation 2 3 NI ELVIS User Manual Chapter 2 NI ELVIS Overview NI ELVIS User Manual Instrument Launcher The NI ELVIS Instrument Launcher provides access to the NI ELVIS SFP instruments Launch the NI ELVIS Instrument Launcher by double clicking the NI ELVIS desktop icon or navigate to Start All Program Files National Instruments NI ELVIS 3 0 NI ELVIS After initializing the suite of LabVIEW SFP instruments opens To launch an instrument click the button corresponding to the desired instrument If the NI ELVIS software is properly configured and the benchtop workstation is cabled to the appropriate DAQ device all buttons should be enabled If there is a problem with your configuration such as when the NI ELVIS Benchtop Workstation is powered off or disconn
88. th SignalExpress In addition to the NI ELVIS instruments you can also use the general AI AO DIO and CTR functionality available on the NI ELVIS hardware in SignalExpress Refer to Figure 2 1 Parts Locator Diagram for Desktop NI ELVIS Systems for an illustration of NI ELVIS Related Documentation The following documents contain information that you might find helpful as you read this manual DAQ device documentation e Getting Started with LabVIEW e LabVIEW Help available by selecting Help VI Function and How To Help from the LabVIEW block diagram or front panel e LabVIEW Fundamentals Measurement amp Automation Explorer Help for DAQmx available by selecting Help Help Topics NI DAQmx from the Measurement amp Automation Explorer MAX window e Where to Start with NI ELVIS available in PDF format on the NI ELVIS Software CD e NI ELVIS Help available on the NI ELVIS Software CD National Instruments Corporation 1 5 NI ELVIS User Manual Chapter 1 DAQ System Overview e Getting Started with SignalExpress e NI Express Workbench Help available by selecting Help Express Workbench Help from the SIgnalExpress window e ni com academic for various academic resources You can download NI documents from ni com manuals NI ELVIS User Manual 1 6 ni com NI ELVIS Overview NI ELVIS combines hardware and software into one complete laboratory suite This chapter provides an overview of th
89. the prototyping board Generic Analog Output NI ELVIS provides access to the two analog outputs from the DAQ device at the DACO and DACI terminals These channels are used by the NI ELVIS hardware for arbitrary waveform generation The output of the DAQ device is buffered and protected by the NI ELVIS hardware Caution Other functions of NI ELVIS such as the DMM and FGEN internally use DACO and DACI and these functions can potentially interfere with the measurements The driver software generates an error message when there is a potential resource conflict 3 14 ni com Chapter 3 Hardware Overview DC Power Supplies The DC power supplies output a static 15 V and 5 V For more information about the DC power supplies output refer to Appendix A Specifications Function Generator FGEN Access to the function generator on the prototyping board includes several additional terminals besides the function generator output signal FUNC_OUT The SYNC_OUT signal outputs a TTL compatible clock signal of the same frequency as the output waveform The AM_IN and FM_IN signals control the amplitude modulation AM and the frequency modulation FM respectively Leave FM_IN and AM_IN disconnected if you do not want to apply modulation to the FGEN signal These signals are in addition to the fine frequency and amplitude controls on the benchtop workstation Software AM is controlled by DACO and software FM is controlled by DACI Variable Pow
90. tion operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation National Instruments respects the intellectual property of others and we ask our users to do the same NI software is protected by copyright and other intellectual property laws Where NI software may be used to reproduce software or other materials belonging to others you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction Trademarks National Instruments NI ni com and LabVIEW are trademarks of National Instruments Corporation Refer to the Terms of Use section on ni com legal for more information about National Instruments trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies Patents For patents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt f
91. to the Removing the Protection Board section 3 Check the fuses since these signals are much more likely to have been overloaded To check the fuse verify that there is continuity across the fuse If all the fuses are operational proceed to the resistor packs 4 Verify that the resistance across each resistor is 100 O 45 One resistor is located between each of the following pairs of pins 1 and 16 2 and 15 3 and 14 4 and 13 5 and 12 6 and 11 7 and 10 and 8 and 9 The resistor packs are socketed so that you can easily replace resistors B 2 ni com failing again Appendix B Protection Board Fuses Caution Before restoring power to the circuit be sure the problem that caused the protection board component to fail has been resolved to keep the same fuse or resistor from If you replace a fuse use a 0 5 A 250 V T 0 5 A L 250V 5 x 20 mm slow blow Littelfuse and rating Cautions For continued protection against fire replace only with fuses of the same type The fuses on NI ELVIS are glass Use care when removing the fuses to prevent injury from broken glass Figure B 2 shows the location of the different fuses and circuit protection circuitry for the NI ELVIS hardware and the location of the resistor packs For Patents ni com paten 500 mA S B 5X20mm TO 5AL250V AO CURRENT NI FRONT PAN re p o
92. top Workstation Power Switch 3 68 Pin DAQ Device Connector 2 AC DC Power Supply Connector Figure 3 2 Back View of NI ELVIS Benchtop Workstation National Instruments Corporation 3 5 NI ELVIS User Manual Chapter 3 Hardware Overview NI ELVIS Protection Board NI ELVIS protects the DAQ device installed in the desktop computer by means of a protection board located inside the NI ELVIS Benchtop Workstation This removable protection board provides short circuit protection from unsafe external signals Removing the protection board enables you to quickly replace a nonfunctioning board with a replacement unit You can obtain the components on the protection board from electronics vendors and therefore service the protection board without sending it to NI for repairs Refer to Appendix B Protection Board Fuses for more information about replacing the fuses on the NI ELVIS Protection Board NI ELVIS Prototyping Board This section describes the NI ELVIS Prototyping Board and how you can use it to connect circuits to NI ELVIS This section also describes the signals that you can connect to NI ELVIS from the prototyping board and the connectors you can use to do so N Caution Ensure the power to the prototyping board power switch is off before inserting the prototyping board into the NI ELVIS Benchtop Workstation You can use the prototyping board connector to install custom prototype boards you develop This connector is mech
93. ts Locator Diagram for NI ELVIS Protection Board National Instruments Corporation vii NI ELVIS User Manual Contents Figure C 1 NI ELVIS Voltmeter Block Diagram ee C 2 Figure C 2 NI ELVIS Current Meter Block Diagram eee C 4 Figure C 3 Function Generator Block Diagram sene C 6 Figure C 4 Impedance Analyzer Block Diagram eee C 7 Figure C 5 CURRENT HI Block Diagram eee C 8 Figure C 6 CURRENT LO Block Diagram eee C 9 Figure C 7 Two Wire Measurement Block Diagram eee C 12 Figure C 8 Three Wire Measurement Block Diagram eee C 14 Figure C 9 Analog Output Block Diagram eene C 15 Figure D 1 Possible Resource Conflicts D 2 Figure F 1 NI ELVIS Enable Communications Bypass VI F 2 Tables Table 2 1 NI EEVIS EXpress VIS Mees ee ge eg ee ee sg Seg reete etl 2 8 Table 3 1 Signal Descriptions a oe tete tee biet t Dee eg 3 8 Table 3 2 M Series DAQ Device Routing sse 3 10 Table 3 3 Analog Input Signal Mapping esee 3 12 Table 3 4 AI Channel Resource Conflicts eese 3 13 Table 3 5 NPN Transistor to Prototyping Board Connections 3 16 Table B 1 Resistor Packs and NI ELVIS Components eee B 4 Table E 1 E
94. u can only use one at a time In order to use the LabVIEW API you must first close the ELVIS SFP When using the current DMM function why are measurements made at the positive side of the circuit less accurate than measurements made on the grounded side The ELVIS DMM has limited common mode rejection capabilities For optimal accuracy make current measurements on the grounded side of the circuit Can I use multiple NI ELVIS Workstations on one computer NI ELVIS version 2 0 5 added the ability to open multiple simultaneous sessions of the NI ELVIS Instrument Launcher that you can use to control multiple NI ELVIS workstations This assumes that each workstation is connected to a separate DAQ device Each time you open the NI ELVIS executable a new session is instantiated so you can have a single session open for each workstation Once you open the NI ELVIS Instrument Launcher click the Configure button to set both Instrument Launchers to use different DAQ devices for communication The NI ELVIS LabVIEW API currently does not support using multiple NI ELVIS workstations on the same computer Where can I find additional NI ELVIS resources for professors or students There are a number of resources for professors and students using NI ELVIS available at ni com academic National Instruments Corporation G 1 NI ELVIS User Manual Appendix G Common Questions Can I use the digital I O lines on the second connector of a M Series DAQ
95. uency Interference document before removing equipment covers or connecting or disconnecting any signal wires O National Instruments Corporation 3 11 NI ELVIS User Manual Chapter 3 Hardware Overview Grounding Considerations Because the analog channels are differential you must establish a ground point somewhere in the signal path As long as the signal you are measuring is referenced to one of the NI ELVIS GROUND pins the measurement is correctly referenced If a floating source such as a battery is being measured be sure to connect one end of the signal to the NI ELVIS GROUND Terminals for the NI ELVIS GROUND signal are located at several locations on the prototyping board All these signals are connected together Connecting Analog Input Signals NI ELVIS User Manual This section describes how to connect AI signals on the NI ELVIS Prototyping Board Refer to the DAQ device documentation for more information about types of signal sources input modes grounding configurations and floating signal sources Generic Analog Input The NI ELVIS Prototyping Board has six differential AI channels available ACH lt 0 5 gt These inputs are directly connected to the DAQ device input channels The NI ELVIS prototyping board also exposes two ground reference pins AI SENSE and AI GND which are connected to the M Series DAQ device Table 3 3 shows how the NI ELVIS input channels map to the DAQ device input channels Table 3 3 Anal
96. uire that their systems be economical Because you can reuse components in a virtual instrumentation system without purchasing additional hardware or software virtual instrumentation is an economical choice Finally measurement systems must be scalable to meet future expansion needs The modular nature of virtual instrumentation makes it easy for you to add new functionality NI ELVIS uses LabVIEW based software and NI data acquisition hardware to create a virtual instrumentation system that provides the functionality of a suite of instruments National Instruments Corporation 1 1 NI ELVIS User Manual Chapter 1 DAQ System Overview What is DAQ NI ELVIS User Manual DAQ systems capture measure and analyze physical phenomena from the real world Light temperature pressure and torque are examples of the different types of signals that a DAQ system can measure Data acquisition is the process of collecting and measuring electrical signals from transducers and test probes or fixtures and sending them to a computer for processing Data acquisition can also include the output of analog or digital control signals The building blocks of a DAQ system include the following items Transducer A device that converts a physical phenomenon such as light temperature pressure or sound into a measurable electrical signal such as voltage or current Signal The output of the DAQ system transducer Signal conditioning Hardware t
97. utput of the function generator SYNC_OUT Function Generator Synchronization Output TTL signal of the same frequency as the signal on the FUNC_OUT pin AM_IN Function Generator Amplitude Modulation Input Input to the amplitude modulator for the function generator FM_IN Function Generator Frequency Modulation Input Input to the frequency modulator for the function generator BANANA A D User Configurable I O Banana Jacks A through D Connects to the banana jacks pins BNC 1 224 User Configurable I O BNC Connectors 1 and 2 4 Connects to the BNC pins BNC lt 1 2 gt User Configurable I O BNC Connectors 1 and 2 Connects to the BNC pins SUPPLY Variable Power Supplies Positive Output of 0 to 12 V variable power supply GROUND Variable Power Supplies Ground Prototyping board ground These ground pins are connected together SUPPLY Variable Power Supplies Negative Output of 12 to 0 V variable power supply 15 V DC Power Supplies 15 V Source Output of fixed 15 V power supply referenced to the GROUND signal 15V DC Power Supplies 15 V Source Output of fixed 15 V power supply referenced to the GROUND signal GROUND DC Power Supplies Ground Prototyping board ground These ground pins are connected together 45V DC Power Supplies 5V Source Output of fixed 5 V power supply referenced to the GROUND signal DO lt 0 7 gt DIO Digital Out
98. x E Reactance 2 Zx sinel Phase x ET 1 Susceptance Reactance to determine the inductive or capacitive elements of the DUT Reactance and Susceptance The magnitude of the phase determines which element is present The frequency is the frequency you set Inductance RE NEE Inductance Offset 2 xn x Frequency Susceptance Capacitance Offset 2xmx Frequency Capacitance Each inductance and capacitance reading includes the offset variable stored in the EEPROM to help eliminate offset errors Resistance Meter The resistance meter is a subset of the NI ELVIS Impedance Analyzer and it uses the same circuitry To get more accurate readings the function generator output frequency is set to 120 Hz and the amplitude is locked at 1 Vy These settings allow a focused calibration that reduces resistive and capacitive offset The resistance meter uses four ranges to measure from 50 to 3 MO National Instruments Corporation C 11 NI ELVIS User Manual Appendix C Theory of Operation Inductance Meter Capacitance Meter The inductance meter is a subset of the NI ELVIS Impedance Analyzer and it uses the same circuitry To get more accurate readings the function generator output frequency is set to 950 Hz and the amplitude is locked at 1 Vy These settings allow a focused calibration that reduces resistive and capacitive offset The capacitance meter is a subset of the NI ELVIS Impedance Analyzer and it u

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