National Instruments 321518A-01 User's Manual
Contents
1. Chapter 7 VirtualBench Arb 10 11 c Select Sketch from the Component Type control d Click on Draw Notice that this changes from View to Component mode so that only the current component is displayed e Click and drag over the graph to create a waveform using the mouse Change the mode to line by clicking on the Mode button This mode allows you to draw straight lines f Click on Draw again to finish editing Save your waveform by selecting File Save Close the Waveform Editor front panel In the front panel of the Waveform Generator click on the Waveform Name Load Waveform control to bring up the file dialog box Select the waveform file that you saved in step six Adjust the Rate control to an appropriate update rate Select a rate that is at least twice the maximum frequency component of your signal Click on the Play button the button containing a green triangle to begin waveform generation Click on the Stop button the button containing a red square to end signal generation Note Please refer to the VirtualBench Arb Online Help for additional help on configuring VirtualBench Arb for your specific application Getting Started with VirtualBench 7 6 National Instruments Corporation Chapter VirtualBench AODC In Windows 3 1x you launch VirtualBench AODC Analog Output Direct Current by double clicking on the AODC icon in the VirtualBench program group In Windows 95 NT4 0 you launch Virt2. C Select the Temperature tab Ea VirtualBench DMM Settings General Current and Resistance Temperature Math Datalogging Temperature Sensor T Thermocouple Temperature Units Fahrenheit TE Cold Juction Source CSensor C Cold Junction Channel memp f d Select the type of sensor that you connected to the channel specified in step one in substep a from the Temperature Sensor list e Select the Temperature Units you want the temperature to be displayed f Select the cold junction sensor type from the Source list when you are using a thermocouple Select the channel to which the cold junction sensor is connected g Click on OK h Click on the sixth Temperature button in the Mode Selector i Click on Run VirtualBench DMM continuously acquires and displays Temperature measurements in the display window j Check to see that the input signal does not exceed the range of your DAQ device and that the input signal does not exceed the selected range when the DMM display shows CLIP or CLIP k Click on Run again to stop the measurement Note Please refer to the VirtualBench DMM Online Help for additional help on configuring VirtualBench DMM for your specific application Getting Started with VirtualBench 6 6 National Instruments Corporation National Instruments Corporation Chapter 6 VirtualBench DMM Measuring a diode If you are using a DAQCard 4050 device you may measure the
3. CUSTOMER S 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 installation 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 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 DAQCard natinst co
4. Finland 09 527 2321 09 502 2930 France 01 48 14 24 24 01 48 14 24 14 Germany 089 741 31 30 089 714 60 35 Hong Kong 2645 3186 2686 8505 Israel 03 5734815 03 5734816 Italy 02 413091 02 41309215 Japan 03 5472 2970 03 5472 2977 Korea 02 596 7456 02 596 7455 Mexico 5 520 2635 5 520 3282 Netherlands 0348 433466 0348 430673 Norway 32 84 84 00 32 84 86 00 Singapore 2265886 2265887 Spain 91 640 0085 91 640 0533 Sweden 08 730 49 70 08 730 43 70 Switzerland 056 200 51 51 056 200 51 55 Taiwan 02 377 1200 02 737 4644 U K 01635 523545 01635 523154 Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware and use the completed copy of this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently If you are using any National Instruments hardware or software products related to this problem include the configuration forms from their user manuals Include additional pages if necessary Name Company Address Fax ____ Phone ___ Computer brand Model Processor Operating system include version number Clock speed MHz RAM MB Display adapter Mouse ___ yes __ no Other adapters installed Hard disk capacity MB Brand Instruments used National Instruments hardware product model Revision Configuration National Instruments
5. National Instruments Corporation V Getting Started with VirtualBench Contents Chapter 6 VirtualBench DMM Front Panel Features Measuring a Signal Chapter 7 VirtualBench Arb Waveform Generator Front Panel Features Waveform Editor Front Panel Features Generating a Waveform Chapter 8 VirtualBench AODC Front Panel Features Controlling Analog Output Chapter 9 VirtualBench DIO Front Panel Features Reading from and Writing to Digital Ports Chapter 10 VirtualBench Device Calibrator Front Panel Features Calibrating a DAQ Device Appendix Customer Communication Getting Started with VirtualBench vi National Instruments Corporation About This Manual The VirtualBench suite of tools is a high performance easy to use virtual instruments application program for Microsoft Windows 3 1x Windows 95 or Windows NT Getting Started with VirtualBench gives you step by step instructions on how to use each instrument It also includes a description of the front panel of each instrument Conventions Used in This Manual The following conventions are used in this manual bold italic bold italic monospace lt gt Bold text denotes a parameter menu name palette name menu item return value function panel item or dialog box button or option Italic text denotes mathematical variables emphasis a cross reference or an introduction to a key concept Bold italic text denotes an activity o
6. Voltage Range Voltage Range 2 038 High 2 838 High 2 030 Low 2 030 Low Use DSP Memon W c Select the Device that you want to use for the data acquisition The device must be successfully configured in the NI DAQ Configuration Utility to appear in the Device list d Set Channel A or B to Channel 0 or 1 depending on where you connected the signal in step one e Change the Input Voltage Range to reflect the upper and lower limit of your signal in volts National Instruments Corporation 4 3 Getting Started with VirtualBench Chapter 4 VirtualBench DSA f Click on the Acquisition tab in the DSA Settings dialog box If DSA Settings Hardware Acquisition Triggering Markers Frame Size 1024 Averaging Type Ott Sample Fate Hz 22050 0 of averages Display Bandwidth Hal Bandwidth Window Type None Uniform tt Lines 512 g Set the Frame Size control to 1024 VirtualBench DSA will analyze data in blocks of 1024 points h Select a Sample Rate that is at least twice the maximum frequency that you are trying to measure i Select the Averaging Type as OFF and Window Type as None Uniform Getting Started with VirtualBench 4 4 National Instruments Corporation National Instruments Corporation Chapter 4 VirtualBench DSA j Click on the Triggering tab in the DSA Settings dialog box if DSA Settings Hardware Acquisition Triggering Markers Trigge
7. data i Note Please refer to the VirtualBench Logger Online Help for additional help on the front panel items Getting Started with VirtualBench 3 2 National Instruments Corporation Acquiring Data Chapter 3 VirtualBench Logger You can start acquiring data with VirtualBench Logger by following these steps 1 Connect several known voltage signals to the input channels of your DAQ device See the user manual of your DAQ device for details It is recommended that you use known reference signals to verify proper operation of VirtualBench Logger and your DAQ device 2 Configure VirtualBench Logger Select Settings from the Edit menu on the front panel Select the Device and SCXI Module that you want to use The SCXI Module list is disabled when no SCXI modules are configured for the selected device If a device does not appear in the Device list make sure you have properly configured the device in the NI DAQ Configuration Utility gt Logger Settings Hardware Device 1 AT MID TEXE 50 zl File Config ae o Ei Timing Config Channels Start Channel 0 Widi Cho End Channel a1 Mdi Cha Md1 Chi Md1 Che Md1 Cha Md1 Ch4 Md1 Chi Wid Chi Wid Ch Wid Che Wid Cho 10 Widi Chia 11 Midi Chii O 00 J 00 N E oo hi Settings File Last set 50 60 Hz Averaging Apply to All Channels VOC Transducer Md Cho Label T000E 1 Max aes 1 000E 1 Mi
8. of data 11 Click on Run again to stop acquisition i Note Please refer to the VirtualBench DSA Online Help for additional help on configuring VirtualBench DSA for your specific application Getting Started with VirtualBench 4 6 National Instruments Corporation Chapter VirtualBench FG In Windows 3 1x you launch VirtualBench FG Function Generator by double clicking on the FG icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench FG by selecting Start Programs VirtualBench VirtualBench FG Front Panel Features Display Range Function Window selector selector I VirtualBench FG o HATIQHAL 10 6 iM 100k 10k wk 100 10 1 Hz ENEM EEE eo Frequency Duty Cycle Offset Amplitude D io ie ie Aurn Stop TE T S v Run Stop Frequency Waveform Knob Modifier Controls The front panel of VirtualBench FG has the following features e Display Window shows the actual waveform frequency being generated e Range Selector selects the frequency range of VirtualBench FG e Function Selector selects which type of waveform is to be generated by VirtualBench FG e Frequency Knob controls the frequency of the waveform within the range selected by the Range Selector National Instruments Corporation 5 1 Getting Started with VirtualBench Chapter 5 VirtualBench FG e Waveform Modifier Controls modifies some of the properties of the waveform Duty Cycle
9. software product Version Configuration The problem is List any error messages The following steps reproduce the problem VirtualBench Hardware and Software Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item Complete a new copy of this form each time you revise your software or hardware configuration and use this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently National Instruments Products DAQ hardware Interrupt level of hardware DMA channels of hardware Base I O address of hardware Programming choice VirtualBench and NI DAQ version Other boards in system Base I O address of other boards DMA channels of other boards Interrupt level of other boards Other Products Computer make and model Microprocessor Clock frequency or speed Type of video board installed Operating system version Operating system mode Programming language Programming language version Other boards in system Base I O address of other boards DMA channels of other boards Interrupt level of other boards Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products This information helps us provide quality products to meet your needs Title Get
10. text and sound wav files the update rate determines the play speed by controlling the number of samples of the waveform that are played per second e Frequency Control modifies the rate at which waveform files wfm are played The waveform rate is multiplied by this value to determine the actual play speed Text and sound wav files are unaffected by this control National Instruments Corporation 1 Getting Started with VirtualBench Chapter 7 VirtualBench Arb e Amplitude Control scales the waveform by a specified amount e Offset Control adds a voltage offset to the waveform e Phase Control shifts the waveform buffer by a certain phase specified in degrees e Play Stop Control starts or stops waveform generation for one channel Waveform Editor Front Panel Features ibe Waveform Editor File Edit Window Help Thi Units 0 00 10 00 20 00 30 00 40 00 p Q 60 00 70 00 80 00 40 00 101 00 Styl e View Hem w avelom F Axis Time Units kHz me Style me J E Control Control EEEN Control x Haversine Amplitude 3 3 0000 Offset 4 0 0000 OY DC 10 Segment Square l Freq af 1 5700 Listbox Phase 0 0000 Duty Cycle af 50 0000 New New Component Component Component Segment Type Control Parameters Button Button Getting Started with VirtualBench 7 2 National Instruments Corporation Chapter 7 VirtualBench Arb The Waveform Editor front panel of VirtualBench Arb has the following featu
11. use to comment on the product documentation When you contact us we need the information on the Technical Support Form and the configuration form if your manual contains one about your system configuration to answer your questions as quickly as possible National Instruments has technical assistance through electronic fax and telephone systems to quickly provide the information you need Our electronic services include a bulletin board service an FTP site a fax on demand system and e mail support If you have a hardware or software problem first try the electronic support systems If the information available on these systems does not answer your questions we offer fax and telephone support through our technical support centers which are staffed by applications engineers Electronic Services Bulletin Board Support National Instruments has BBS and FTP sites dedicated for 24 hour support with a collection of files and documents to answer most common customer questions From these sites you can also download the latest instrument drivers updates and example programs For recorded instructions on how to use the bulletin board and FTP services and for BBS automated information call 512 795 6990 You can access these services at United States 512 794 5422 Up to 14 400 baud 8 data bits 1 stop bit no parity United Kingdom 01635 551422 Up to 9 600 baud 8 data bits 1 stop bit no parity France 01 48 65 15 59 Up to 9 600 b
12. want to save for example MyScope set Note When you launch VirtualBench Scope it automatically uses the settings from when you last used VirtualBench Scope 4 Enable the CH 1 button in the Channel Selector Acquire group Make sure all other channels are disabled Click on AutoSetup on the Main Control bar 6 Click on Run to stop the acquisition i Note Please refer to the VirtualBench Scope Online Help for additional help on configuring VirtualBench Scope for your specific application Getting Started with VirtualBench 2 4 National Instruments Corporation Chapter VirtualBench Logger In Windows 3 1x you launch VirtualBench Logger by double clicking on the Logger icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench Logger by selecting Start Programs VirtualBench VirtualBench Logger Front Panel Features Status Strip Chart Legend Display Display Control Ife gt VirtualBench Logger gt ES E Pas Channel orca File Hame Boe a Performance Labels data lag Logging y Off Cear stat on P Values Acquire Performance Data Indicator Controls National Instruments Corporation 3 1 Getting Started with VirtualBench Chapter 3 VirtualBench Logger The front panel of VirtualBench Logger has the following features Strip Chart Display displays the logged data Y Axis Select Controls selects which channel Y scale to display on either th
13. 1 Configure VirtualBench AODC a Select Settings from the Edit menu on the front panel b Click on the General tab in the AODC Settings dialog box If ADDE Settings General Ag Channels Device i A T MI0O 16sE 50 SCH Module 2 aLel 1124 Help OF Cancel c Select the Device and SCXI Module that you want to use The SCXI Module list is disabled if no SCXI modules are configured for the selected device The device must be successfully configured in the NI DAQ Configuration Utility to appear in this list Getting Started with VirtualBench 8 2 National Instruments Corporation Chapter 8 VirtualBench AODC d Click on the AO Channels tab on the AODC Settings dialog box i ADDE Settings General AD Channels Channel 0 Range 10 Initial Woltage M 0 000 Help OF Cancel e Select the Range and Initial Voltage V or Current mA for each channel in the Channels list f Click on OK to use these settings 2 Use the Channel control to assign an analog output channel from your DAQ device to that particular AO Level control 3 Use the slider or digital controls in the AO Level control to set the output level 4 Click on Update to update the analog output channel with the new value you specified in AO Level control Note Please refer to the VirtualBench AODC Online Help for additional help on configuring VirtualBench AODC for your specific application Nation
14. 1 Welcome to VirtualBench c Note It is recommended that you not run other applications while you install VirtualBench Insert Disk 1 into your 3 5 inch floppy disk drive Select Run from the File menu in the Program Manager Enter A setup or B setup depending on the pathname of your floppy disk drive in the input box and click on OK 6 Follow the instructions that appear in the dialog boxes Installing VirtualBench under Windows 95 NT 4 0 To install VirtualBench from CD perform the following steps 1 Insert your VirtualBench CD into your CD ROM drive Lz Note At this point your operating system may prompt you to run SETUP EXE You should ignore this prompt Select Close and continue to the next step 2 Select Run from the Windows 95 NT Start menu Enter X WIN95 NT DISK1 SETUP where X is your CD drive in the input box and click on OK 4 Follow the instructions that appear in the dialog boxes To install VirtualBench from diskettes perform the following steps 1 Make backup copies of your VirtualBench diskettes and store the originals in a safe place 2 Insert Disk 1 into your 3 5 inch floppy disk drive i Note It is recommended that you not run other applications while you install VirtualBench Select Run from the Start menu 4 Enter A setup or B setup depending on the pathname of your floppy disk drive in the input box and click on OK 5 Follow the instructions that appear in the
15. Getting Started with VirtualBench March 1997 Edition Part Number 321518A 01 L m e lt A Z NATIONAL Copyright 1997 National Instruments Corporation All rights reserved Internet Support support natinst com E mail info natinst com FTP Site ftp natinst com Web Address http www natinst com Bulletin Board Support BBS United States 512 794 5422 BBS United Kingdom 01635 551422 BBS France 01 48 65 15 59 Jn Fax on Demand Support 512 418 1111 ATN S fo lt gt Telephone Support U S Tel 512 795 8248 Fax 512 794 5678 ZS International Offices Australia 02 9874 4100 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Canada Ontario 905 785 0085 Canada Qu bec 514 694 8521 Denmark 45 76 26 00 Finland 09 527 2321 France 01 48 14 24 24 Germany 089 741 31 30 Hong Kong 2645 3186 Israel 03 5734815 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 520 2635 Netherlands 0348 433466 Norway 32 84 84 00 Singapore 2265886 Spain 91 640 0085 Sweden 08 730 49 70 Switzerland 056 200 51 51 Taiwan 02 377 1200 U K 01635 523545 National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin TX 78730 5039 Tel 512 794 0100 Important Information Warranty Copyright Trademarks The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in mate
16. Graphics Display displays waveforms Vertical Slider adjusts voltage offset for each channel This slider is useful when you want to view multiple waveforms in the Graphics display Trigger Settings Group controls the conditions required for a signal to be acquired for example whether to wait for a digital trigger before acquiring data or whether to acquire data in free run mode no triggering Main Control Bar Buttons Run acquires data continuously When clicked off the VirtualBench Scope is placed in idle mode Single instructs VirtualBench Scope to perform a single sweep acquisition Auto Setup starts configuration of the scope for the best timebase volts per division and trigger setting for each channel currently selected with the channel selector Mode sets the mode of the scope to either Volts versus Time or X versus Y mode X Scroll scrolls along the X axis or time axis i Note Please refer to the VirtualBench Scope Online Help for additional help on the front panel items Getting Started with VirtualBench 2 2 National Instruments Corporation Acquiring Data Chapter 2 VirtualBench Scope You can start acquiring signals with VirtualBench Scope by completing the following steps L National Instruments Corporation Connect a signal to the Channel 0 input of your National Instruments DAQ device See the user manual of your DAQ device for details For ex
17. QCard 4050 go to step b If you are using a DAQCard 4050 connect the resistor to be measured to the terminals of the device and go to step g b Connect a precision current source to the channel that you specified in step one See the user manual of your DAQ device for details c Connect your resistance to be measured across the same terminals d Select Settings from the Edit menu on the front panel e Select the Current and Resistance tab f Enter the value of the current source that you placed at the Channel specified in step one input of your DAQ device g Click on OK h Click on the fifth Resistance button in the Mode Selector i Click on Run VirtualBench DMM continuously acquires and displays resistance measurements in the display window j Check to see that the input signal does not exceed the range of your DAQ device and that the input signal does not exceed the selected range when the DMM display shows CLIP or CLIP k Click on Run again to stop the measurement 5 Measure Temperature VirtualBench DMM requires the use of a thermistor IC sensor or thermocouple to make precise temperature measurements a Connect a precision temperature sensor to the channel that you specified in step one See the user manual of your DAQ device for details b Select Settings from the Edit menu on the front panel National Instruments Corporation 6 5 Getting Started with VirtualBench Chapter 6 VirtualBench DMM
18. Welcome to VirtualBench NI DAQ 4 9 0 if you plan to use an AT DSP2200 AT A2150 or EISA A2000 DAQ device NI DAQ 5 0 or later if you plan to use Microsoft Windows NT 4 0 or later or if you plan to use any of the following new DAQ devices PCI MIO 16E 1 AT DIO 32HS PCI MIO 16E 4 AT 5102 PCI MIO 16XE 10 AT 5411 PCI MIO 16XE 50 DAQCard 5102 PCI 1200 DAQCard 4050 PCI DIO 96 PC DIO 96PNP PCI DIO 32HS PC DIO 24PNP PCI 5411 CXI 1120D VXI AO 48XDC VXI MIO VXI SC 1000 PCI 5102 Installing VirtualBench under Windows 3 1x To install VirtualBench from CD perform the following steps 1 Open the Windows Program Manager by double clicking on the Program Manager icon i Note It is recommended that you not run other applications while you install VirtualBench Insert your VirtualBench CD into your CD ROM drive Select Run from the File menu in the Program Manager 4 Enter X WIN31 DISK1 SETUP where X is your CD drive in the input box and click on OK 5 Follow the instructions that appear in the dialog boxes To install VirtualBench from diskettes perform the following steps l Getting Started with VirtualBench Make backup copies of your VirtualBench diskettes and store the originals in a safe place Open the Windows Program Manager by double clicking on the Program Manager icon 1 2 National Instruments Corporation Chapter
19. You can start generating waveforms with VirtualBench Arb by following these steps 1 Configure VirtualBench Arb a Select Settings from the Edit menu on the front panel b Select the Channels tab VirtualBench Arb Settings General Channels Display Device TATMIO GE 2 eee Number of channels 2 Triggering W Enable Triggering SOLUCE PFI Condition Rising Edge c Select the Device that you want to use for waveform generation To appear in the Device list the device must be successfully configured in the NI DAQ Configuration Utility d Select the number of channels to be used for waveform generation For example select 1 to generate waveforms on only one channel e Select the corresponding DAQ device channels to map to the VirtualBench Arb alphabetical channel names f Click on OK 2 Creating a New Waveform a Select Window Waveform Editor b Enter the duration of the waveform in the Duration control to set the duration of the first segment Getting Started with VirtualBench 7 4 National Instruments Corporation National Instruments Corporation Chapter 7 VirtualBench Arb Click on New Component By default every time you click on New Component a new library component is added to any existing waveform Select the type of component Library Expression or Sketch The following steps further describe how to use these options Creating a Waveform using the Library Functi
20. adjusts the duty cycles of the Sine Wave Square Wave and Triangle Wave Offset adjusts the DC offset of the waveform Amplitude adjusts the peak amplitude of the generated waveform e Run starts or stops waveform generation Note Please refer to the VirtualBench FG Online Help for additional help on the front panel items Generating a Waveform You can configure VirtualBench FG to generate a waveform by performing the following steps 1 Configure the output a Select Settings from the Edit menu on the front panel If VirtualBench FG Settings Device 1 AT MID 16E Channel 0 Use Recommended l Update Rate E Rate 4 1000 kS sec Use FIFO Buffer Size F z000 Samples Ok Cancel b Select the Device that you want to use for waveform generation The device must be successfully configured in the NI DAQ Configuration Utility to appear in this list c Set the Device Channel to 0 or 1 d Click on OK Getting Started with VirtualBench 5 2 National Instruments Corporation Chapter 5 VirtualBench FG 2 Connect a device or scope to the output of the analog output device that you specified in step one See your DAQ device user manual for details 3 Click on Run VirtualBench FG continuously generates an analog waveform at the output pin 4 Click on Run again to stop the waveform generation i Note Please refer to the VirtualBench FG Online Help for additional help on config
21. al Instruments Corporation 8 3 Getting Started with VirtualBench Chapter VirtualBench DIO In Windows 3 1x you launch VirtualBench DIO Digital Input Output by double clicking on the DIO icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench DIO by selecting Start Programs VirtualBench VirtualBench DIO Front Panel Features LED Indicator B VirtualB ench DIO l ES F B 5 4 ort Port EJE oe Control Hex Control Hex Indicator On Off Buttons Write Control The front panel of VirtualBench DIO has the following features e Port Control allows you to independently assign the selected digital port control group to any of your device digital ports e LED Indicator shows the current state of the assigned digital port e On Off Buttons sets the digital state of the assigned digital port The state of the digital port is not actually changed until the Write button is clicked on These buttons only appear for ports or lines configured for output National Instruments Corporation 9 1 Getting Started with VirtualBench Chapter 9 VirtualBench DIO e Hex Control sets the digital state in hexadecimal form of the assigned digital port The state of the digital port is not actually changed until the Write button is clicked on e Hex Indicator shows the current state in hexadecimal form of the assigned digital port e Write Control sets the assigned digita
22. ample on a 68 pin MIO E series device connect a signal to pins 68 ACHO and 67 AIGND for a Referenced Single Ended input Configure VirtualBench Scope Select Settings from the Edit menu on the front panel Select the National Instruments device you want to use from the General tab of the Settings dialog box If a device does not appear in the Device menu ring make sure you have properly configured the device using the NI DAQ Configuration Utility VirtualBench Scope Settings General Channels Measurements Display Device 1 4T MID 16E 2 Trigger Sensitivity 0 2 Divisions Buffer Size Tk Samples Averaging On E Uze Recommended Sample Fate u Use SC 2040 c Specify which channels on the data acquisition device correspond to the VirtualBench Scope channels using the Channels tab For an MIO E series device you would select VirtualBench Scope Ch 1 to be representative of DAQ Channel 0 2 3 Getting Started with VirtualBench Chapter 2 VirtualBench Scope if VirtualBench Scope Settings General Channels Measurements Display Color DAG Channel Coupling Multiplier Offset chi Mo ey fcc ei go goo cha ee OC ao ie oo y cho MM 2 il oc ie Zio Joo w cha Mf E foe gio Foo y Ref1 ret i d Click on OK to use these settings 3 Save your settings by selecting Edit Save Settings from the pull down menu on the front panel Enter the name of the file you
23. anual contains comment and configuration forms for you to complete These forms are in the appendix Customer Communication at the end of this manual Getting Started with VirtualBench viii National Instruments Corporation Chapter Welcome to VirtualBench Welcome to VirtualBench a suite of high performance easy to use virtual instruments for Microsoft Windows 3 1x Windows 95 and Windows NT This document contains installation instructions lists of system requirements and new features and updated information to help you get started with VirtualBench VirtualBench Installation for Windows You must install VirtualBench along with two other items e A National Instruments data acquisition DAQ device e NI DAQ driver software Minimum System Requirements To run VirtualBench you must have the following e MS DOS version 5 0 or later e Microsoft Windows 3 1 or later Microsoft Windows 95 or Microsoft Windows NT 4 0 or later e Personal computer using at least a 33 MHz 80486 or higher microprocessor National Instruments recommends a 66 MHz 80486 or higher microprocessor e VGA resolution or higher video adapter e Math coprocessor or one of the following coprocessor emulation programs WEMM387 386 from WATCOM Q387 from Quickware e Minimum of 16 MB of RAM e 30 MB free hard disk space e Microsoft compatible mouse National Instruments Corporation 1 1 Getting Started with VirtualBench Chapter 1
24. aud 8 data bits 1 stop bit no parity FTP Support To access our FTP site log on to our Internet host ftp natinst com as anonymous and use your Internet address such as joesmith anywhere com as your password The support files and documents are located in the support directories National Instruments Corporation A 1 Getting Started with VirtualBench Fax on Demand Support Fax on Demand is a 24 hour information retrieval system containing a library of documents on a wide range of technical information You can access Fax on Demand from a touch tone telephone at 512 418 1111 E Mail Support currently U S only You can submit technical support questions to the applications engineering team through e mail at the Internet address listed below Remember to include your name address and phone number so we can contact you with solutions and suggestions gs pportCnatinst con Telephone and Fax Support National Instruments has branch offices all over the world Use the list below to find the technical support number for your country If there is no National Instruments office in your country contact the source from which you purchased your software to obtain support Om OR Telephone Fax Australia 02 9874 4100 02 9874 4455 Austria 0662 45 79 90 0 0662 45 79 90 19 Belgium 02 757 00 20 02 757 03 11 Canada Ontario 905 785 0085 905 785 0086 Canada Quebec 514 694 8521 514 694 4399 Denmark 45 76 26 00 45 76 26 02
25. bjective note caution or warning Text in this font denotes text or characters that you should literally enter from the keyboard Sections of code programming examples and syntax examples also appear in this font This font also is used for the proper names of disk drives paths directories programs subprograms subroutines device names variables filenames and extensions and for statements and comments taken from program code Angle brackets enclose the name of a key on the keyboard for example lt PageDown gt The symbol leads you through nested menu items and dialog box options to a final action The sequence File Page Setup Options Substitute Fonts directs you to pull down the File menu select the Page Setup item select Options and finally select the Substitute Fonts option from the last dialog box National Instruments Corporation Vil Getting Started with VirtualBench About This Manual paths Paths in this manual are denoted using backslashes to separate drive names directories and files as in C dirlname dir2name filename This icon to the left of bold italicized text denotes a note which alerts you to important information Customer Communication National Instruments wants to receive your comments on our products and manuals We are interested in the applications you develop with our products and we want to help if you have problems with them To make it easy for you to contact us this m
26. dialog boxes National Instruments Corporation 1 3 Getting Started with VirtualBench Chapter 1 Welcome to VirtualBench What Is Installed by the Setup Program If you purchased the full VirtualBench suite the setup program installs the VirtualBench engine and nine virtual instruments the oscilloscope Scope dynamic signal analyzer DSA digital multimeter DMM function generator FG logger arbitrary waveform generator Arb DC analog output controller AODC digital input output controller DIO and device calibrator Each instrument comes with online help If you did not purchase the full VirtualBench suite the setup program for VirtualBench installs the VirtualBench engine and the instruments you purchased The VirtualBench toolbar enables only the buttons for the instruments you purchased However you can access online help for all the VirtualBench instruments i Note Do not rename the VirtualBench folders scope Logger dmm fg dsa arb aodc dio and cal VirtualBench must have this folder hierarchy to work correctly Ly Note Be sure to view the VirtualBench readme txt file in Disk 1 of the VirtualBench installation disk for the latest information concerning the installation and use of VirtualBench Connecting Signals to Your Data Acquisition Device Refer to the user manual for your National Instruments DAQ device for instructions on connecting signals to your device Getting Started with VirtualBenc
27. e left or right Y axis of the Strip Chart Display Status Display shows the Current Time Start Time and Stop Time of the current data acquisition Channel Select Control selects which channels to display on the Strip Chart Display You can use the Labels Values radio buttons below the Channel Select control to switch between the Channel Labels and the Channel Values Legend Control changes the trace attributes of each Display Channel Clicking on a trace in the Legend Control brings up a menu that allows you to make changes to the Point Style Line Style Interpolation method and Color of the trace Acquire Data Controls Logging On Off starts or stops logging of data to disk when you run the instruments Clear Chart clears the Strip Chart Display Clicking on this button does not affect the acquisition of data Start starts the acquisition of data using the current logger configuration Stop stops the acquisition of data and data logging when enabled Pause temporarily stops the flow of data to the Strip Chart and Log file when enabled Performance Indicator shows how efficiently VirtualBench Logger is running in data acquisition mode You should strive to keep VirtualBench Logger running as efficiently as possible As the performance decreases the indicator turns red to indicate poor performance When the performance reaches 0 an error message pops up and the Logger stops collecting
28. h 1 4 National Instruments Corporation Chapter VirtualBench Scope In Windows 3 1x you launch VirtualBench Scope by double clicking on the Scope icon in the VirtualBench window within the Program Manager In Windows 95 NT 4 0 you launch VirtualBench Scope by selecting Start Programs VirtualBench VirtualBench Scope Front Panel Features Vertical Channel Slider Selector if VirtualB ench S cope M Es EEE O o Fe Channels fhi L VoltsAdiv th2 y th3 a wh 4 Channel abn E i phra W Position Settings an i Timebase Time N Measure ETS Base s A ech 2 Cursors Trigger Trigger Settings C1 MR Mode Group co ea Slope EE Sel i Source EA Fun C23 Single ye aya Mode Fy x a a Graphics Main Control Bar Display National Instruments Corporation 2 1 Getting Started with VirtualBench Chapter 2 VirtualBench Scope The front panel of VirtualBench Scope has the following features Channel Selector selects a waveform for display on the Graphics display Channel Settings adjusts the vertical sensitivity of the selected channel Turning the knob clockwise increases the sensitivity each vertical division represents a smaller voltage value Timebase allows you to change the timebase setting Turning the knob clockwise results in a shorter time period displayed in the Graphics display each horizontal division represents a shorter time period
29. ime Cr oe ttt Hii SE Sta Tn Se oo eens ane ST Ta oer ae E TOR nn EPEE TEn eT EEEn FVE wb SPM PHH ES eT Ata Begin Logging on Start Time Interval 1 00E 0 Time Interval sec Log to Disk Every 1 Time Interval s Chapter 3 VirtualBench Logger Stop Timing Stop Manually f Stop After Elapsed Time Fog Hrs pe Mins Pe Secs Stop at Time Se ee ann SEH th Hite ct ee Sea eae oie teers ae lt St sate we Hern Display Length 1 SECs OF Cancel g Click on OK in the Logger Settings dialog box to return to the front panel 3 Select the channels that you want to display on the strip chart using the Channel Select Control 4 Use the right and left Y axis Controls to select the display channels Y scale to display on the strip chart 5 Click on Start in the Data Acquisition Controls area The VirtualBench Logger begins acquiring data at one second intervals and displays it on the strip chart If no data displays check the signal connections to your DAQ device or check the Range Limits for the channels you selected in the Logger Settings dialog box 6 Click on the Stop button to stop the acquisition Please refer to the VirtualBench Logger Online Help for additional help on configuring VirtualBench Logger for your specific application National Instruments Corporation Getting Started with VirtualBench Chapter VirtualBench DSA In Window
30. in this list e Calibrate Button begins the calibration process You can use the VirtualBench Device Calibrator to calibrate the analog input circuitry of the following DAQ devices E series AT MIO 16F 5 AT MIO 64F 5 AT MIO 16X and PC LPM 16 Special connections are not necessary VirtualBench Device Calibrator automatically accesses the calibration features of these devices National Instruments Corporation 10 1 Getting Started with VirtualBench Chapter 10 Virtual Bench Device Calibrator Calibrating a DAQ Device You can calibrate your device with VirtualBench Device Calibrator by following these steps 1 Wait at least 15 minutes after both your computer and device are powered on before calibrating your device 2 Select the device you want to calibrate from the Device List Click on Calibrate Calibration of your device may take some time Do not be alarmed if calibration takes up to 20 seconds 4 Wait for calibration to complete before using any other VirtualBench instrument c Note Please refer to the VirtualBench Device Calibrator Online Help for additional help on configuring VirtualBench Device Calibrator for your specific application Getting Started with VirtualBench 10 2 National Instruments Corporation Appendix Customer Communication For your convenience this appendix contains forms to help you gather the information necessary to help us solve your technical problems and a form you can
31. l port to the state shown on the On Off checkboxes or Hex Control The Write button is disabled if the digital port is configured for read mode i Note Please refer to the VirtualBench DIO Online Help for additional help on the front panel items Reading from and Writing to Digital Ports You can start reading from and writing to the digital ports of your National Instruments device with VirtualBench DIO by following these steps 1 Configure VirtualBench DIO a Select Settings from the Edit menu on the front panel b Click on the General tab in the DIO Settings dialog box If DIO Settings General Device 1 PE DID 24 Getting Started with VirtualBench 9 2 National Instruments Corporation Chapter 9 VirtualBench DIO c Select the Device and SCXI Module that you want to use The SCXI Module list is disabled if no SCXI modules are configured for the selected device The device must be successfully configured in the NI DAQ Configuration Utility to appear in this list d Click on the Ports tab in the DIO Settings dialog box if DIO Settings General Pot FE H E 5 4 A 2 0 Port Direction o gt o gt lo lo o gt o gt o gt o gt v f gt gt gt ble l gt Initial Output State on lon on lon or lon on lon OF Cancel e Select the preferred Port Direction Inversion and Initial Output State for every port in the Port list f Click on OK to use these setting
32. m NI DAQ SCXI and VirtualBench are trademarks of National Instruments Corporation Product and company names listed are trademarks or trade names of their respective companies WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in treatment and diagnosis of humans Applications of National Instruments products involving medical or clinical treatment can create a potential for accidental injury caused by product failure or by errors on the part of the user or application designer Any use or application of National Instruments products for or involving medical or clinical treatment must be performed by properly trained and qualified medical personnel and all traditional medical safeguards equipment and procedures that are appropriate in the particular situation to prevent serious injury or death should always continue to be used when National Instruments products are being used National Instruments products are NOT intended to be a substitute for any form of established process procedure or equipment used to monitor or safeguard human health and safety in medical or clinical treatment Contents About This Manual Conventions Used in This Manual ccccccccceccccececcccececsccececsecescnceceseseacaccecacaceeees Vil Customer COmmilUniCatiOn iiciwdicsei
33. n i Mx B Deadbanding Unit us G 0 O00E 0 Lew O 000E 0 Help OF Cancel W Log c Set the Start and End Channel appropriately for the channels that you connected signals to in step one National Instruments Corporation 3 3 Getting Started with VirtualBench Chapter 3 VirtualBench Logger d Set the channel attributes for each channel from the Start to End Channel Give each channel an appropriate label for easy identification on the Strip Chart display e Click on the File Config button Specify the name of the Log file where the logged data is stored on disk Specify the location of this file by using the Browse button Select Enable Logging and Begin Logging on Start Click on OK If File Configuration Data File Info File Name Username data log Browse loe Smith Comments Start Hew File Append after N Lines Overwrite 1000 W Enable Logging can read this file with my spreadsheet application Field Length Precisi M Begin Logging on Start TEN OF Cancel f Click on the Timing Config button Set the Start and Stop Timing to start and stop manually respectively Set the Time Interval to 1 00 seconds Set the Display Length to one minute Set Log to Disk every n Time Intervals to 2 Click on OK Getting Started with VirtualBench 3 4 National Instruments Corporation i Note Timing Configuration Start Timing Start Manually f Start at T
34. nal shunt resistor to measure current a b C Connect a precision shunt resistor across the input of the Channel that you specified in step one See the user manual of your DAQ device for details Connect your current signal to the same terminals Select Settings from the Edit menu on the front panel d Select the Current and Resistance tab If YirtualBench DMM Settings General Current and Resistance Temperature Math D atalogging Current Shunt Resistor 1 000 p r Curent Source 4 20 00 m OF Cancel Enter the value of the shunt resistor that you placed across the channel specified in step one input of your DAQ device Click on OK Click on the third IDC or fourth IAC button in the Mode Selector depending on which type of voltage you connected in substep b of step three Click on Run VirtualBench DMM continuously acquires and displays current measurements in the display window 6 4 National Instruments Corporation Chapter 6 VirtualBench DMM i Check to see that the input signal does not exceed the range of your DAQ device and that the input signal does not exceed the selected range when the DMM display shows CLIP or CLIP j Click on Run again to stop the measurement 4 Measure resistance If you are not using a DAQCard 4050 device VirtualBench DMM requires the use of a precision external current source to measure resistance a If you are not using the DA
35. ons a Enter the duration of the waveform in the Duration control This control sets the duration of the first segment in the waveform Click on New Component This action adds a component to the first segment Be sure that Library is selected in the Component Type control Select a waveform from the library and modify the parameters if necessary Click on New Component again to add a new component This component adds to the first to produce the final segment Change the Function selector to perform subtraction multiplication division or frequency modulation Click on New Segment to add additional waveform segments to the end of the waveform Creating a Waveform from a Mathematical Expression Create a new segment by clicking on New Segment Create a new component in the segment by clicking on New Component Select Expression from the Component Type control Enter an expression in terms of variable x in the expression box Any error is indicated in red with the character position of the error placed in parentheses Enter the range for x in the From and To input boxes The expression is evaluated over this range You can change the number of cycles of the waveform by changing the Cycles control Creating a Waveform from a Freehand Sketch a b Create a new segment by clicking on New Segment Create a new component in the segment by clicking on New Component 7 5 Getting Started with VirtualBench
36. ontains the Run Single and Source controls Run acquires data continuously When clicked off the DSA is in idle mode Single acquires a single frame of data Source turns on the source using the selection made in the Source Configuration dialog box i Note The Source button is only available when you use an AT DSP2200 device with VirtualBench DSA Trigger Timeout turns yellow when a trigger does not occur within the time specified by the Trigger Timeout in the Trigger Configuration dialog box e Measurement Displays displays measurements reference waveforms and markers for marker measurements i Note Please refer to the VirtualBench DSA Online Help for additional help on the front panel items Getting Started with VirtualBench 4 2 National Instruments Corporation Chapter 4 VirtualBench DSA Acquiring and Measuring Signals You can start acquiring and measuring signals with VirtualBench DSA by following these steps 1 Connect a signal to the Channel 0 or input of your DAQ device Please refer to the user manual of your DAQ device for details 2 Configure the DSA a Select Settings from the Edit menu on the front panel b Select the Hardware tab from the DSA Settings dialog box p DSA Settings Hardware Acquisition Triggering Markers Source Device 1 AT DS5P2200 Channel 4 Channel E Channel Coupling Channel Coupling o 2 1 9 rr AC P AC
37. r Type Trigger Channel Slope Hone z A i Rising B i Falling Pretigger Samples Level M 0 0 00 Trigger Timeout sec Hysteresis W 1 00 0 00 OK Cancel k Set the Trigger Type to none This setting puts the acquisition in a Freerun mode 1 Click on OK Change the display indicator left and right arrow buttons to Display 1 in the Display Settings control Select Channel A or B depending on where you connected your signal in the Channel Selector of the Display Settings control Select Time Waveform in the Function Selector of the Display Settings control Choose the mode as Magnitude the Units as Vrms and the Scale as Linear Select Markers Off in the Markers section Use the left or right arrow buttons to change the display indicator to Display 2 in the Display Settings control Select Pwr Spectrum Select the mode Magnitude the Units Vrms and the Scale dB in the Function Selector of the Display Settings control Click on the Single button VirtualBench DSA displays a single frame of data The Time Waveform is on Display 1 and the Power Spectrum on Display 2 If no data is visible click on the Autoscale Y Axis button the button with the y and up down arrows in the 4 5 Getting Started with VirtualBench Chapter 4 VirtualBench DSA Display Control Check your signal connections if data is still not visible 10 Click on Run VirtualBench DSA continuously acquires and displays frames
38. res View Control selects the waveform view displayed on the graph Waveform displays the entire waveform Segment displays the first of the selected segments Component displays only the first selected component X Axis Control selects the X axis units Time displays the waveform as a function of time Frequency displays the power spectrum of the waveform Units Control selects the active units currently being used for the display and control values Style Control changes the graph attributes Segment Listbox Control selects the segment or component to be edited A segment is preceded by a number and indicates a unique section of the waveform The value in parentheses indicates the segment length Indented text in the list box represents a waveform component New Segment Button inserts a new waveform segment immediately after the current selection New Component Button inserts a new component immediately after the current selection Component Type Control selects the type of component A waveform Library function is one of 20 predefined waveform patterns An Expression is a single variable function evaluated over an interval A Sketch is a waveform drawn by the mouse i Note Please refer to the VirtualBench Arb Online Help for additional help on the front panel items National Instruments Corporation 3 Getting Started with VirtualBench Chapter 7 VirtualBench Arb Generating a Waveform
39. rials 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 manual is accurate The document has been carefully reviewed for technical accuracy In the event that 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
40. s 2 Use the Port Control to assign a digital port from your DAQ device to that particular port control group 3 Change the output state of a particular port by selecting or deselecting the On Off buttons or Hex control to the preferred state and finally clicking on the Write button to change the port to the new State 4 Read the states displayed on the LEDs If the port is configured as input no additional settings are needed Lz Note Please refer to the VirtualBench DIO Online Help for additional help on configuring VirtualBench DIO for your specific application National Instruments Corporation 9 3 Getting Started with VirtualBench Chapter VirtualBench Device Calibrator In Windows 3 1x you launch the VirtualBench Device Calibrator by double clicking on the Calibrate icon in the VirtualBench program group In Windows 95 NT4 0 you launch the VirtualBench Device Calibrator by selecting Start Programs VirtualBench VirtualBench Device Cal Front Panel Features VirtualBench Board Calibrator File Help 1 47T MIO 16E 2 ser 1135 Calibrate Device i ist F This board was last calibrated on 9 2696 The front panel of the VirtualBench Device Calibrator has the following features e Device List shows all the devices installed in your computer that are self calibrating and the last calibrated date The device must be successfully configured in the NI DAQ Configuration Utility to appear
41. s 3 1x you launch VirtualBench DSA Dynamic Signal Analyzer by double clicking on the DSA icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench DSA by selecting Start Programs VirtualBench VirtualBench DSA Front Panel Features if VirtualBench DSA File Edit Window Help Pe netaurients markers DISPLAY 1 Display 1 ee AF Controls A AS 391 4 DISPLAY 1 gt H Channel A MEASUREMENT E Time Waveform E Magnitude E Wims dE 7 Degrees MARKERS Measurement Displays Display Settings Dual Markers markers Display 2 DISPLAY 2 it G Controls I sa PF tri Single Source RRR EH lee EJI Main Control Bar The front panel of VirtualBench DSA has the following features e Display Settings Control provides individual control of the measurements being performed on Display 1 and 2 You can switch between Display 1 and 2 by clicking on the left and right arrow buttons above the Display Settings Control You can select the channels function magnitude phase mode magnitude unit National Instruments Corporation 4 1 Getting Started with VirtualBench Chapter 4 VirtualBench DSA log linear mode phase unit and markers in this control You can refer to the online help for a detailed description of each component e Display 1 Display 2 Controls changes the marker positions and display attributes of the respective displays e Main Control Bar Buttons c
42. tiewieekaviaiceui Seicausceieeeuciasieiwads LeveleskaxelesealscG he eadeivelevten Vill Chapter 1 Welcome to VirtualBench VirtualBench Installation for Windows ccccccececeeccceececececeeceeeeeeeeeeeeeeeeeeeeeeeeaaeaaaaaaaas l 1 Minimum System Requirements sinus sen sdestndsmanusensarronnastarc onde sasaesisnoreiuerotaneeaadeuemavemaets 1 1 Installing VirtualBench under Windows 3 1X ccccccccessscseeeeeeeccecceeeeeeceeeeeeeeeeeeeeeeeeeeess 2 Installing VirtualBench under Windows 95 NT 4 0 cccccceccccesecceeceeeeceeeeceeeeeeeeeeeeeeeeeess 1 3 What Is Installed by the Setup Prostat ennan 1 4 Connecting Signals to Your Data Acquisition Device cccccccceeseceeeceeeceeeeeeeeeeeeeeeees 1 4 Chapter 2 VirtualBench Scope Front Panel Feature recrea a a a a a 2 1 ACUN DT vita Mea saoueea eet duieniabeseateninleiwaladiavaiena ts ave hat teacaeeiantst 2 3 Chapter 3 VirtualBench Logger Front Panel Features cccsccsscoscsccoscsccsccsccsccscoscscoscescoscescnscasescessescescescescescasceseas 3 1 ACUN S Dalier N a a sine terae 3 3 Chapter 4 VirtualBench DSA Front Pale Fea MEG S eraa aad tains auqtonand bases a acme atsbantineensak 4 Acquiring and Measuring Signalls cccccccssceseccceccccececeeccceecceeeeeseseseeseceaseneaaeeaaaaqaaaagas 4 3 Chapter 5 VirtualBench FG Fone Pane le Anes onia bucaniulecwoadsndmsamonnmcancunainnhGacse E TS 5 1 GENET AIS AW AVG LOM eeii a E E T 5 2
43. ting Started with VirtualBench Edition Date March 1997 Part Number 321518A 01 Please comment on the completeness clarity and organization of the manual If you find errors in the manual please record the page numbers and describe the errors Thank you for your help Name Title Company Address Phone ___ _s Fax ___ Mail to Technical Publications Fax t0 Technical Publications National Instruments Corporation National Instruments Corporation 6504 Bridge Point Parkway 512 794 5678 Austin TX 78730 5039
44. ualBench AODC by selecting Start Programs VirtualBench VirtualBench AODC Front Panel Features AO Update Level Control Control if VirtualBench AODC Toh Fie Edt Heb ae Channel Channel Voltage W Channel Voltage v 3 33 1 321 Co ntrol Update i Update h _ Lay i lt l l l 5 0 10 0 100 5 0 0 0 5 0 10 0 Channel Voltage i Channel Voltage M 2 oF 321 E HEAL x E Update Update l 400 50 oo 50 100 400 S50 o0 50 100 Channel Voltage M Channel Voltage M d E 76l 5 E 2 08 y Update 7 r Update 100 50 oo 50 100 400 50 oo 50 100 The front panel of VirtualBench AODC has the following features e Channel Control allows you to independently assign the selected analog output control to any of your device analog output channels e AO Level Control manipulates the analog output level of the assigned analog output channel The analog output channel is not actually changed until the Update button is clicked on e Update Control updates the channel selected in the Channel control with the voltage current specified in the AO Level control i Note Please refer to the VirtualBench AODC Online Help for additional help on the front panel items National Instruments Corporation 8 1 Getting Started with VirtualBench Chapter 8 VirtualBench AODC Controlling Analog Output You can start controlling analog output with VirtualBench AODC by following these steps
45. ualBench DMM Settings General Curent and Resistance Temperature Math Datalogging Device 1 4T MIO 16E 2 Board Channel j Sample Aate Medium Select the Device and SCXI Module that you want to use The SCXI Module list is not visible when no SCXI modules are configured for the selected device If a device does not appear in the Device List make sure you have properly configured the device in the NI DAQ Configuration Utility Set the channel to the source of your signal Set the Sample Rate to Medium Click on OK Measure voltage VirtualBench DMM measures AC and DC voltage without any external hardware a Connect a signal AC or DC to the Channel input that you specified in step one See the user manual of your DAQ device for details Click on the first VDC or second VAC button in the Mode Selector depending on which type of voltage you connected in substep a of step two 6 3 Getting Started with VirtualBench Chapter 6 VirtualBench DMM X Getting Started with VirtualBench e Click on Run VirtualBench DMM continuously acquires and displays voltage measurements in the display window Check to see that the input signal does not exceed the range of your DAQ device and that the input signal does not exceed the selected range when the DMM display shows CLIP or CLIP Click on Run again to stop the measurement Measure current VirtualBench DMM requires the use of a precision exter
46. ure Diode measures the voltage drop across a diode Diode mode is only available when you are using the DAQCard 4050 Range Selector determines the measurement range This range is different for each measurement mode AutoRange mode selects the best range to fit the input signal Main Control Buttons Run starts or stops the DMM acquisition Single acquires a single measurement Log enables logging Math Control Buttons Null selects Relative mode When you select this button all subsequent measurements are made relative to the measurement made when this button was pressed Max Min displays the maximum and minimum values since the button was first pressed dB displays the decibel value of your signal dBm displays the decibel power level with respect to one mW mxX B manipulates normal display readings X according to the calculation mX B 9 displays the current value as a percentage of a reference Please refer to the VirtualBench DMM Online Help for additional help on the front panel items 6 2 National Instruments Corporation Chapter 6 VirtualBench DMM Measuring a Signal You can start measuring signals with VirtualBench DMM by following these steps Configure VirtualBench DMM l National Instruments Corporation a b d e f Select Settings from the Edit menu on the front panel Select the General tab B Virt
47. uring VirtualBench FG for your specific application National Instruments Corporation 5 3 Getting Started with VirtualBench VirtualBench DMM Chapter In Windows 3 1x you launch VirtualBench DMM Digital Multimeter by double clicking on the DMM icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench DMM by selecting Start Programs VirtualBench VirtualBench DMM Front Panel Features Mode Selector if VirtualBench DMld Range 250 25v av 200m 20m DC auto f f Mode Range Measurement Selector Display lel Ei File Edt Hef Liane Aun Single gt efa Log Math V Q S E Buttons o 5O Ss 6 Main Controls The front panel of VirtualBench DMM has the following features National Instruments Corporation Measurement Display displays measurements Mode Selector selects which measurement mode you want to use The modes from left to right are as follows Volts DC measures the DC component of a voltage signal Volts AC measures the AC component of a voltage signal Current DC measures the DC component of a current source 6 1 Getting Started with VirtualBench Chapter 6 Getting Started with VirtualBench i Note ir Note VirtualBench DMM Current AC measures the AC component of a current source QOhms measures resistance Temperature measures temperat
48. voltage drop across a diode up to two volts a b C Connect the diode to the terminals of the DAQCard 4050 Click on the sixth diode button in the move selector Click on Run Click on Run again to stop the measurement 6 7 Getting Started with VirtualBench Chapter VirtualBench Arb In Windows 3 1x you launch VirtualBench Arb Arbitrary Waveform Generator by double clicking on the Arb icon in the VirtualBench program group In Windows 95 NT 4 0 you launch VirtualBench Arb by selecting Start Programs VirtualBench VirtualBench Arb Waveform Generator Front Panel Features Frequency Update Amplitude Offset Phase Control Rate Ie gt Virtualbench Arb iol Ea Waveform Fie Samples Ch 10100 Rate 100 0 Play Mod Play Mode Waveform A be y Mame Frequency a Offset Phase A Wavel 1 00 He 21 00 0o00 w oo r Play Stop B cemply gt 1 00 He je 41 00 0o00 w oo be The key features of the Waveform Generator front panel of VirtualBench Arb are e Waveform Name Load Waveform Control shows the name of the waveform if any that currently loads into the channel buffer Select this window to load from a file to a waveform e Play Mode plays the waveform continuously When deselected plays the waveform only once e Update Rate controls the update rate of the waveform This control does not affect the play speed of waveform files wfm but does affect waveform quality With
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