LabVIEW SignalExpress overload indication

I was just wondering if LabVIEW SignalExpress 2010 had an overload indication/rejection feature, and if so where I could find it. I am currently using a PXI-4462 card with the trial version of SignalExpress.
Thanks,
Greg

Please post to the SignalExpress board. Very few users of it here. You might want to also explain what you want to give an overload indication of.

Similar Messages

  • Moving Averages in Labview SignalExpress

    Hi everyone,
    I am measuring power consumption values from a PC system at 25k samples/sec and looking for a way to calculate the 1-sec and 5-sec moving averages via Labview SignalExpress (Unfortunately I don't have Labview to custom-implement this). One person suggested using FIR low pass filter instead, but I am not quite sure what values I need to set for "number of taps" and "cutoff frequency" values to have it act like a 1-second and 5-second moving average. Any suggestions here?
    Also, does anyone have a .VI from Labview for a moving average functionality, which I can use in my Labview SignalExpress setup?
    Thanks,
    --Serhan 

    Serhan,
    If you are just aiming to smooth out your signal and reduce noise, than an FIR filter would work fine, but it sounds like you are trying to achieve an exact moving average.  Unfortunately, there are entire textbooks on filter design and getting the filter to accomplish that with great accuracy would be a feat.  It is true that the moving average is a form of the FIR filter.
    I had some old code that took the running average of 100 samples in SE, but I'll have to look for it when I get to work tomorrow.  I'll post again when Ifind it.
    I don't have any moving average VI's handy, but that would probably be the easiest way to accomplish this. Maybe someone can distribute their VI to Serhan?
    Rob K
    Measurements Mechanical Engineer (C-Series, USB X-Series)
    National Instruments
    CompactRIO Developers Guide
    CompactRIO Out of the Box Video

  • What kind of FIR filter in Labview SignalExpress Tektronix Edition?

    I am using FIR filter in Labview SignalExpress Tektronix Edition to process signal acquired from the TDS3032B.But i dont know what kind of this filter(Window,least-squares,or equiripple...).Does any one know about this?

    Check out some of NIs links:
    Virtual Instrumentation Empowers Digital Signal Processing Design
    http://zone.ni.com/devzone/cda/tut/p/id/4759
    Designing Filters Using the NI LabVIEW Digital Filter Design Toolkit
    http://zone.ni.com/devzone/cda/tut/p/id/3237
    lots of information about different FIR can be found by searching on google as well.
    National Instruments

  • Crashing LabView SignalExpress 2012 at startup

    Hi,
    I've just installed NI material (PXI-1033) and software which run normaly with MAX
    When I try to run LabView signalexpress 2012 and try to open an example or or create a new project, LaBView begins to load then crashes at initialing Style phase. My OS is XP SP3 French, my PC a DELL Optiplex 790. I have uninstall my antivirus, update windows, installed last patch fp3 LabView 2012, but always the same issue. I send screen shot and windows event as attached document.
    Thank in advance for your help
    Attachments:
    Crash_LabView_signalExpress2012.zip ‏468 KB

    Hello Rhingray,
    Have you tried to uninstall Signal Express and to reinstall it ?
    By the way have you tried to reinstall .Net Framework 4 ?
    Regards,
    Mathieu P. | Certified LabVIEW Associate Developer
    National Instruments France
    #adMrkt{text-align: center;font-size:11px; font-weight: bold;} #adMrkt a {text-decoration: none;} #adMrkt a:hover{font-size: 9px;} #adMrkt a span{display: none;} #adMrkt a:hover span{display: block;}
    Journées techniques : des fondamentaux aux dernières technologies pour la mesure et le contrôle/comm...

  • Multimètre numérique compatible avec Labview SignalExpress.

    Bonjour,
    Je suis à la recherche d'un mutlimètre numérique compatible avec Labview. Je viens de trouver un multimètre qui est comptible avec le logiciel LabVIEW SignalExpress et possédant un port RS232 (Tektronix DMM4020).
    Je me demande si ce multimètre peut être utilisé avec le logiciel Labview? (sachant qu'il n'a pas de port GPIB)
    Merci d'avance pour vos réponses.
    Jérémy

    Bonjour,
    Merci d'avoir posté sur le forum NI.
    Vous trouverez à ce lien le driver permettant de connecter votre multimètre et LabVIEW.
    Je vous conseille quand même de télécharger ce driver depuis LabVIEW (Ecran d'accueil de LV >> Rechercher des drivers d'instruments...) en entrant le nom de votre multimetre dans le champ prévu à cet effet.
    Passer par LV vous permettra d'instaler directement la palette correspondant à votre instrument.
    Cordialement,
    Nicolas M.
    National Instruments France
    #adMrkt{text-align: center;font-size:11px; font-weight: bold;} #adMrkt a {text-decoration: none;} #adMrkt a:hover{font-size: 9px;} #adMrkt a span{display: none;} #adMrkt a:hover span{display: block;}
    Journées Techniques LabVIEW 2012 : du 27 septembre au 22 novembre
    2 sessions en parallèle : Débuter a...

  • Labview SignalExpress (2.0) Dual-core capable?

    I've read that the full-blown Labview is fully multithreaded and can take full advantage of multicore, can SignalExpress?  The machine I am evaluating on is a rather aged P4 (2.0 GHz I believe) and I'm finding my task to be rather CPU intensive, so I will probably put SignalExpress on a Core2 Duo machine if we purchase the package.

    Yes, because LabVIEW SignalExpress is built on the same LabVIEW technology, all of your projects automatically take advantage of muticore architectures.  
    Regards,
    Matt F
    Keep up to date on the latest PXI news at twitter.com/pxi

  • Wirte to ports of 6501 directly using labview signalExpress

    Can i generate a signal in labview signalExpress and write this data directly to the ports of NI 6501 card 

    Please post your questions to the SignalExpress board.

  • LabVIEW/SignalExpress: How can I automate measuring the time between two pulses?

    Hi everyone, bit of a newbie here so please bear with me.  
    I'm a student at a university conducting a muon decay experiment with an oscilloscope connected to some photomultipliers.  To summarize, if a muon enters the detector it will create a very small width pulse (a few ns).  Within a period of 10µs it may decay, creating a second pulse.  The oscilloscope triggers on the main pulse 5-15 times per second, and a decay event happens roughly 1-2 times per minute.  I am trying to collect 10 hours of data (roughly 1500-2000 decay events) and measure the time it takes for each decay.
    I've been able to set recording conditions in SignalExpress that starts recording on the first pulse and stops recording on the last.  The Tektronix TDS 1012 oscilloscope however feeds 2500 points of data from this snapshot into a text file (for use in excel or other software).  Even if I perfectly collected the data, I would have 100,000+ data points and it would be too much to handle.  I don't know how (or if it's possible) to reduce the sample size.
    To conclude, using Labview or SignalExpress, I would like to be able to have the software
    1.  Differentiate between the single pulse detections and double pulse decay events
    2.  Record only when two pulses appear on the oscilloscope
    3.  Measure the time between these two pulses and ONLY that to minimize the amount of data recorded.
    Any help would be GREATLY appreciated, thanks!

    Hi wdavis8,
    I am not that familiar with Tektronix, but there should be a place in the dialog that you go through when you create the action step to acquire date to specify a sampling rate. That would allow you to reduce the number of data points you are seeing, but may reduce the quality of the data.
    If it’s just a matter of that much data being hard to dig through when you have that many points, you could do some analysis on the data after the fact, and then create a new file with only the data you want to look at. For example, you could identify the peaks in the data, and based on the distance between them or the difference in magnitude, selectively write data to a new file.  
    Here is some information about peak detection in LabVIEW:
    http://www.ni.com/white-paper/3770/en/
    You could also do some downsampling on the data to get fewer data points:
    https://decibel.ni.com/content/docs/DOC-23952
    https://decibel.ni.com/content/docs/DOC-28976
    Those are just a few quick ideas. 
    Kelsey J
    Applications Engineer

  • Connecting a 35670A to labview signalexpress

    Hello all,
    I am rather new to using signal express,
    First problem I have is I will be using the LE version of signal express, will this program be sufficient to run a VI for the 35670A,
    Also it says you get a 30day trial which I have not for some reason, but do get 10 minute window,
    Im going to try and sort out why the 30 day trial has not activated properly,
    But what I want to know is how to setup the VI and get signal exspress to see the 35670A, I am using agilents I/O libraries and a agilent GPIB to USB cable. 

    Hi RGAK, Welcome to the NI Discussion Forums!
    SignalExpress does not run VIs, for this you'll need LabVIEW. If you didn't mean VI specifically, could you share a screenshot of what you have so far?
    Regards,
    Ben Clark

  • How to view data in total elapsed time while recording in LabVIEW signalexpress

    Im trying to record temperature over time and would like to view the data over the total elapsed time.  It would be a great help if anyone could help me out with this.
    Much thanks,
    Daniel

    This is the LabVIEW board. You need to post your question to the SignalExpress board.

  • How do you export LabVIEW SignalExpress Log files into MatLab?

    I am using SignalExpress to capture vibration and acoustic data.  I need to show the results to a customer that doens't have access to LabVIEW.  They have Matlab, so I need to find a way to export the SignalExpress log file into a usable format that I can import into Matlab.

    SignalExpress log files are in TDMS format.  You also have the option to convert your log to text when you finish it.  So you have two options:
    Send the original TDMS log and have your colleague use the MATLAB plugin which allows reading of TDMS files.
    Convert the log to text and send the text files.
    The first option is probably your best bet, since it will result in smaller files.  Let us know if you run into issues.
    This account is no longer active. Contact ShadesOfGray for current posts and information.

  • 在LabVIEW SignalExpress裡如何使用 Create Analog Signal 產生低頻方波與高頻方波調變的訊號

    各位先進大家好:
    之前想要利用 Create Analog Signal產生一個低頻的方波與40k Hz的方波調變的訊號，
    但不論如何調整 Create Analog Signal裡面block size或是sample rate的值，
    所得到的兩個pulse的間距都沒有改變，(例如固定block size的值，調整sample rate，兩個pulse的間距都沒變，反之亦然)
    參考下圖:
    目前已有成功地產生出上圖的訊號，但卻不知如何調整設定使pulse間距能夠縮短(意即如何改變低頻方波的duty cycle)，
    而整體的設定如下圖:
    雖然之前已有先進解釋過block size與sample rate的意思，
    但在方波的調變上仍然有疑惑，
    不知是否還有其他的參數要調整呢?
    還請各位先進不吝指教，謝謝~

    基本上您在SignalExpress調duty cycle, block size等，調的都是綠色框所示的部分，也就是你產生方波的duty cycle與綠色區塊的block 要多大。
    你會看到紅色區域的間隔是由於訊號產生輸出後，軟體重新restart 下一次的任務的間隔，因此才會沒有波形輸出。你可以用post-execution delay來加大他的間隔，以ms來加大(因為PC的clock是1KHz)，但是沒有辦法縮小得更小，因為最小就是0ms，也就是輸出訊號後DAQ close task馬上重新開始下一次task的最小迴圈間隔。
    建議您使用Analog Waveform Editor先將波形編輯後(包含無訊號的間隔與有方波的地方)，最後以continuous output連續輸出來達到這樣的效果。
    或是單純用LabVIEW來做，也是可以先將欲輸出的訊號寫好進buffer，最後以硬體clock作連續輸出。

  • Labview signalexpress extract part of the data

    Hi, I'm using signalexpress 2.0 and I was wondering how I can take data I've recorded and remove parts to leave with with just a certain bit I'm interested in.

    Use the Subset and Resample step with the full data as an input.  You don't have to resample.
    This account is no longer active. Contact ShadesOfGray for current posts and information.

  • Data acquisition problem with NI-DAQmx 9205 and SignalExpress

    Hi everyone,
    I am using a NI-DAQmx 9205 connected via ethernet to my computer and Labview SignalExpress running to acquire data. I am working with EMG and I use an amplifier system from GrassTechnologies (http://www.grasstechnologies.com/products/ampsystems/ampsystems.html). The way it works is the electrodes are plugged on the amplifier system and the amplifier is plugged to the NI-DAQmx 9205.
    I don't know how to setup the system to be able to read properly the emg signal on SignalExpress.
    Does anyone know how to use it?
    Thank you for youe help
    John

    Hi John,
    If I were an Applications Engineer I'd probably be able to figure this out on my own but would you mind elaborating on your hardware setup a little? You mention plugging into a "NI-DAQmx 9205", however the NI-DAQmx is the data acquisition 'driver', the [NI]9205 is an Analog Input Voltage module. Do you mean to be plugging into a Compact DAQ or cRIO?
    Also, I'm not familiar with EMG readings or the amplifiers/electrodes you're working with.
    What is the signal type going into the amplifier from the electrodes, and what is the signal type and range (amplitude) of the signal coming out of the amplifier; AC, DC? I'm assume it's all voltage?
    Straight voltages are pretty easy to work with provided you can scale it to usable units.
    Lets get your hardware and signal types figured out then we'll be able to tell Signal Express how to handle those signals.  
    SCXI- 1000 Chassis w/ 1346 adapter
    PCI 6281 DAQ card
    SCXI- 1520 Bridge Board w/ 1314 Terminal Block (x2)
    SCXI- 1180 Feedthrough Panel w/ 1302 Block
    Signal Express 2014.
    Win7 Enterprise

  • No VISA Resources in Labview but all present in MAX

    Hi,
    I am unable to find any VISA resources from LabVIEW, however, all NI hardware is available and working in MAX. I have just installed a PCI-8433/2 as well as a NI PCI-8512 CAN/HS Card. As part of the installation I believe MAX was upgraded to version 4.6.2. I will attach the max configuration report for those who are interested. I am working with LabView 8.2. I also uninstalled an agilent GPIB card and as a result the NI-GPIB card is the sole controller and is GPIB0... instead of the agilent card.
    I have had a similar problem before that was a result of a corrupted database, but I was unable to find this problem on the forums this time and I am not getting any errors. Just an empty VISA Resource control.
    Any suggestions would be greatly appreciated.
    Nate
    MAX Configuration Report
    12/27/2010 1:35:05 PM
    MAX Summary
    My System
    Data Neighborhood
    CAN Channels
    NI-DAQmx Tasks
    V1P1V2P2
    V3P3
    Devices and Interfaces
    GPIB0 (PCI-GPIB)
    Instrument0
    Instrument1
    Instrument2
    Instrument3
    Instrument4
    Instrument5
    Miscellaneous VISA Resources
    GPIB0::INTFC
    GPIB0::16::INSTR
    GPIB0::2::INSTR
    GPIB0::22::INSTR
    GPIB0::7::INSTR
    GPIB0::10::INSTR
    GPIB0::27::INSTR
    GPIB0::3::INSTR
    Network Devices
    NI-DAQmx Devices
    NI USB-9481: "Dev2"
    NI USB-9481: "Dev1"
    NI-XNET Devices
    NI PCI-8512 CAN/HS
    CAN1
    CAN2
    PCI-8433/2
    Port1
    Port2
    PXI System (Unidentified)
    Serial & Parallel
    COM1
    COM6
    COM9
    LPT1
    Scales
    Software
    IVI Compliance Package 3.3
    LabVIEW 8.2
    LabVIEW Run-Time 7.1
    LabVIEW Run-Time 8.0.1
    LabVIEW Run-Time 8.2.1
    LabVIEW Run-Time 8.5.1
    LabVIEW Run-Time 8.6.1
    LabWindows/CVI Run-Time 9.0
    Measurement & Automation Explorer 4.6.2
    Measurement Studio for VS2005
    DotNET
    Common
    NI LabVIEW SignalExpress 3.0
    NI Spy 2.7.1
    NI-488.2 2.46
    NI-CAN 2.7
    NI-DAQmx 8.7.2
    NI-PAL 2.5.3
    NI-Serial 3.6
    NI-USI 1.0.2
    NI-VISA 4.6.2
    NiVisaServer.exe
    NIvisaic.exe
    NI-VISA Runtime 4.6.2
    NI-XNET 1.1
    IVI Drivers
    Advanced
    Instrument Driver Software Modules
    Simulation Driver Software Modules
    Simulation Driver Sessions
    Driver Sessions
    Logical Names
    -Nate
    Solved!
    Go to Solution.

    Now that IS odd.
    Can you show a couple screen shots from MAX?
    First expand the software tab and post a png of the screenshot (I'm not yet convinced you do not have SOME driver issue)
    Next select MAX>TOOLS>NI VISA>VISA Options- Wait for the new screen then expand Mysystem General settings and select Aliases.
    You could also try "Clear all aliases" from there and reboot.
    Jeff

Maybe you are looking for