Acquisition keep repeated samples Source of relaxation

Hello

I found this article http://zone.ni.com/devzone/cda/epd/p/id/5009, and the vi attached to it will do what I need.  I want to acquire continuous samples at a sampling rate specific based on an external trigger on PFI0.  Pretty simple things.  However, the trigger on PFI0 signal repeat at regular intervals (every 0.1 seconds or more).  I want the vi to acquire all the time but to be triggered on the first instance of the trigger on PFI0, then to ignore the rest of Extensible triggers.  It may acquire up to 10 seconds after this initial trigger, and after the time has expired, that I will call the DAQmx clear task vi.

The vi of this article will do this, or should be changed in any way to accept only the first instance of relaxation?

Thank you.

Steve

You're in luck.  In response to the 1st relaxation and ignoring the following are normal behavior by default.  On several occasions of the additional work of trigger (and CQI data compatible hw) to set up.

So yes, the trigger in the article you linked should work as you want.  Note, however, that the example is designed to use an external signal like a sample clock.  If you just want to use the synchronization engine internal to the Commission for a specified sampling rate, you can specify "OnboardClock" as the Source of the clock on the façade.

-Kevin P

Tags: NI Hardware

Similar Questions

  • large file audio attachment sent by a friend keeps repeating and blocks all other messages, but mail gets through the interface of Yahoo on my iPod

    MP3 big unsolocited 8.9 MB file that is sent by a friend takes forever to download and then prevents any other messages being delivered. Once deleted keep repeating (up to about 10 times now! with the same result.) This does not happen on my Ipod that does not Thunderbird.I have disabled a filter that could have stopped this file but without result. Don't know if is my problem or their

    Any help gratefully received
    Best wishes

    Could you if you please that mark as resolved

  • I got a box on the browser top who wrote, you a message. The problem is that it keeps repeating that you a message. I don't want to hear it.

    I got a box on the browser top who wrote, you a message. The problem is that it keeps repeating that you a message. I don't want to hear it.

    It is a unsolicited announced to 'make' an I phone. I'm very tired of winning all that junk. I have certainly not ads want to talk to me now.

    You can do a check of malware with several digitization programs of malicious software on the Windows computer.
    Please scan with all programs, because each program detects a different malicious program.
    All of these programs have free versions.

    Make sure that you update each program to get the latest version of their databases before scanning.

    Alternatively, you can write a check for an infection rootkit TDSSKiller.

    See also:

  • Software Safari 9.0.3 update keeps repeating

    Software Safari 9.0.3 update keeps repeating

    This procedure will remove some temporary and cache files. The files are generated automatically and do not contain any of your data. Sometimes they can become corrupted and cause problems like yours.

    Please, back up all data and read this message before doing anything.

    Triple-click anywhere in the line below on this page to select this option:

    /var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068

    Right-click or Ctrl-click on the highlighted line and select

    Services ▹ reveal in Finder (or just to reveal)

    the contextual menu.* file should open with a selected subfolder. The subfolder has a long name beginning with "zyx" and ending with "68". Place this subfolder in the trash. Do not move other subfolders with similar names. You may be prompted for administrator login password. Restart the computer and empty the trash.

    * If you do not see the item context menu copy the selected text in the Clipboard by pressing Control-C key combination. In the Finder, select

    Go ▹ go to the folder...

    from the menu bar and paste it into the box that opens by pressing command + V. You won't see what you pasted a newline being included. Press return.

  • Outbreak of several sources of relaxation?

    Hello

    I have a system with four ADC inside PXI. Also, I have four sources of relaxation one for each card.

    In some plans, I need start the ADC cards simultaneously by using this triggter which comes first. I don't know which triggers will be first. Y at - it means to achieve in LabView?

    Thanks in advance.

    Hi Podoba,

    The 6123 does not support the detection of change, so the best course of action is probably to use an external RC (or NORMAL) door with 4 inputs.  You can connect your signals to the doorways or, and then use the signal to trigger your DAQ hardware.  If you use a NOR Gate, then you would trigger on the falling edge.

    The "additional material" is really just a simple IC.  You will probably find something that meets your needs on digikey (search example below parameters):

    Best regards

  • acquisition of continuous sample with multiple channels

    Hello! Please tell me what I'm doing wrong here, I'm confused about how the acquisition of continuous sample with several channels (using NI USB-6215 boxes).

    Following code is python code, but I don't know who confuse you (and it's only a part of my code in order to not try, it won't work

    buffer_size = 2000 #samples to read
    sampling_rate_hz = 20000
    channels = "Dev1/ai0 ai1/Dev1" #this can be a string or a large number...

    CHK (nidaq. DAQmxCreateTask ("", ctypes.byref (taskHandle)))

    CHK (nidaq. DAQmxCreateAIVoltageChan (taskHandle, channels,"", DAQmx_Val_Cfg_Default, float64(-10.0), float64 (10.0), DAQmx_Val_Volts, None "))

    CHK (nidaq. DAQmxCfgSampClkTiming (taskHandle,"", float64 (sampling_rate_hz), DAQmx_Val_Rising, DAQmx_Val_ContSamps, uInt64 (buffer_size) "))

    CHK (nidaq. DAQmxRegisterEveryNSamplesEvent (taskHandle, DAQmx_Val_Acquired_Into_Buffer, uInt32 (1000), uInt32 (0), EveryNCallback_func, None))

    CHK (nidaq. DAQmxRegisterDoneEvent (taskHandle, uInt32 (0), DoneCallback_func, None))

    the callback function #and

    def py_EveryNCallback_func (self, taskHandle, event_type, nSamples):
    data = numpy.zeros ((self.channel_amount,buffer_size,), dtype = numpy.float64)
    read = int32()
    CHK (nidaq. DAQmxReadAnalogF64 (taskHandle, buffer_size, float64 (10.0), DAQmx_Val_GroupByScanNumber, data.ctypes.data, buffer_size * number_of_channels, ctypes.byref (read), None))

    With only one channel, everything's fine, and tension diagram looks like this:

    buffer_size = 2000, sampling_rate_hz = 20000

    But if I use two channels, voltage diagram looks like this

    buffer_size = 2000, sampling_rate_hz = 20000

    It looks like the sampling rate is higher or there are fewer values?, but with two channels with the results table is 2000 * 2 long and with a single result is 2000 * 1 long is not smaller

    most of the settings important (?) in my code:

    DAQmxCfgSampClkTiming "float64 rate": 20000 (sampling_rate_hz)
    'UInt64 sampsPerChanToAcquire' DAQmxCfgSampClkTiming: 2000 (buffer_size)
    DAQmxRegisterEveryNSamplesEvent "uInt32 nSamples": 1000 (?)
    'Int32 numSampsPerChan' DAQmxReadAnalogF64: 2000 (buffer_size)
    DAQmxReadAnalogF64 "float64 [] readArray": [[buffer_size] * number_of_channels]
    'UInt32 arraySizeInSamps' DAQmxReadAnalogF64: buffer_size * number_of_channels

    as you can see nSamples is a big question mark, but the problem still exists if I set variable buffer_size y (2000)

    Hi Dazzler,

    It is not a multi-channel example that ships with the driver, but after a quick look at the code that you use in your third post, everything seems to be configured correctly. The only thing I was thing I got a question about your plots. Looks like you draw each time the same number of points. If you draw just the table of data directly from the playback feature, you need to draw (buffer_size * number_of_channels) number of channels since the data returned is as an interlaced array. You can also choose to deinterleave samples. More information about this lie in the NOR-DAQmx C reference help, which is installed with the NOR-DAQmx driver.

    Kind regards

    Kent

    Technical sales engineer

  • Spider Solitaire games keep repeating

    Recently got a new desktop with Windows 7.

    I like to play the hardest version of Spider solitaire... but the games keep repeating... more... and more! Problem is that I think I've seen perhaps only 5-8 "of the games." Keep repeating the same games. Keep thinking that this will change ultimately I am nearly 60 games... but it didn't! He wasn't an isue on another computer, I had... could have seen the same game, once or twice in 500 tests.

    I must have played the SAME game now 8.10 times already. One of my favorite games match3 ruin! How can I fix it?

    Hi GJMK,

    Try the steps below and check them off and see them if Spider Solitaire resets and play many varieties of the game:

    i. Click Start, in the search box type in turn windows features turn on or off

    II. the search for games from the list

    III. clear the check box and restart the computer.

    IV. follow the same procedure and check out the games to install it back.

    c. make sure you restart the computer

    You can check the link below: features on or off Windows activate:http://windows.microsoft.com/en-US/windows7/Turn-Windows-features-on-or-off

    With regard to:

    Jeremy K - Microsoft technical support.

    Visit ourMicrosoft answers feedback Forum and let us know what you think.

    If this post can help solve your problem, please click the 'Mark as answer' or 'Useful' at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

  • Microsoft updates keep repeating again and again

    I have windows xp sp 3 x 86 and what are the updates that keep repeating

    A security update for .NET Framework 2.0 SP2 and 3.5 SP1 on Windows Server 2003 and Windows XP x 86 (KB983583)

    Microsoft .NET Framework 3.5 SP1 and .NET Framework 2.0 SP2 Security Update for Windows 2000, Windows Server 2003 and Windows XP x 86 (KB979909)

    Microsoft .NET Framework 2.0 Service Pack 2 update for Windows Server 2003 and Windows XP x 86 (KB976569)

    Please help me solve this problem

    .NET framework 3.5 includes the .NET Framework 2.0.

    @alex13542... It seems that the .NET Framework is not properly installed or the installation is corrupted.
    Please see - Update: what to do if the other .NET Framework installation troubleshooting do not help
    Try all the steps starting with the first proposal and work your way up to the last.

    MowGreen Services update - consumer safety

  • Updates installed, keep repeating to be updated again, count locks when idle.

    Hello
    I recently changed my antivirus software.
    Now I find that 2 m/soft updates keep repeat to be installed, I went to installed updates, they were loaded on two occasions, I've hidden updates.

    How can I correctly solve the problem?

    Also when the pc is idle, it crashes with my name, I have to click o to return to the widows.

    Love to solve this problem as well.

    Thank you.

    Ashish, thanks

    I'm sorry to say none of the above suggestions worked, howewver I uninstalled my new internet security software, installed the free AVG software is back to normal.

    I will seek advice from the manufacturer of software with this question.

    Thanks for trying,

    Sam.

  • Letter uu keeps repeating itself

    Keep repeating letteriuu and number three and two keys do not respond

    try to press them or remove the keys by shooting them and look for a blockage in your keyboard. did you try restarting your computer too?

    -Alex

  • How to stop the file KB to keep repeat to install?

    KB2478663 and KB2518870 keep repeating to install.  It is already installed and keep it coming after that I installed.  It make me crazy!

    Mike

    Hi Mike,.

    See the article after some troubleshooting for your question:

    http://support.Microsoft.com/kb/910339/en-us >

    Please let us know if it did or did not help to solve your problem.

    07/02 / 1110:50: 34 am

  • I ran the Windows memory diagnostic tool, he keeps repeating and will not be finished, finally Boot Manager Windows appears with the error code: 0xc000000d.

    I ran the windows memory diagnostic tool on my PC toshiba laptop equium, it restarts priming for display and then directly into the RAM test...
    Unfortunately, it will not end and keeps repeating and finally if leave to work for a few hours the Windows Boot Manager comes in and stops the RAM test while noting an error 0xc000000d code. I REALLY can't reformat what I have given crucial for the thesis of the University and I only have the Vista installation disc not repair...
    This RAM test shows whenever I start the PC, how can I forget that he spent his RAM test a pc and more? I'm so confused!

    Any ideas on how may get a repair disk or fix it otherwise? Thank you very much

    Run Memtest86 +: your computer passes this test?

    Memtest86 + is running from a floppy or CD and should eliminate or confirm if your one or more of your sticks of memory are bad or the values of the SPD in the BIOS are correct.

    Let it run for as long as you can: 2,4,6,8 or several hours (at least 3 full passes), if no errors at that time then your ram is OK.

    http://www.memtest.org/
    Memtest86 + Guide/How To (use the.) ISO to create a bootable CD)
    http://www.overclockers.com/forums/showthread.php?t=409152

    J W Stuart: http://www.pagestart.com

  • "Play-to' peripheral network keeps repeating same song

    When I move a group of songs to the play area on the right panel and select the menu item ' in play', my DLNA compatible AV controller is displayed. When I select it, a new window opens, and the first song on the list begins to play on the audio/video devices. Fine.

    The problem is that the song just keeps repeating. It doesn't matter if the 'repeat' control is enabled or disabled. I can click on any song in the list and he plays with happiness this song - again and again and more :-(

    If I select a playlist saved from the DLNA client, he plays very well and is not repeated. Unfortunately, I want to control the WMP device, not in the Panel of the DLNA client.

    Help appreciated.

    It's probably something that should be fixed by Denon. they have a support
    Forum and other users to have reported the same problem?
     
     
    Barb
     
    MVP - Windows/entertainment and connected home
     
     
    Please mark as answer if that answers your question
     
     
     
     
  • 9401 buffered output digital clock sample source

    Hi, I would like to generate a pulse train with a defined number of pulses, according to a defined periodicity. I use a NI9401 module in the Groove 3 CompactDAQ chassis so that I can write the required buffer sample 2047 pulse train. The problem I have is I am unable to choose any clock source slower than the time base of 100 kHz, which means that the buffer can underflow very easily. I would use a 4 kHz clock source, but cannot find how do. If I want to generate a source of the clock of one of the counters, I must have the 9401 in slots 6 or 7 which then do not allow for generation of digital signals in the buffer...

    Hi, JPP,.

    Access to internal counters, even if modules are connected in the Groove 1-4 of the cDAQ chassis. Note this site 6 & 7 are necessary only if you need external access to counters as task of counter in the buffer, the measures of frequency/period, etc... Since in your application, all you need is to generate a continuous pulse train and access its output internally to clock output your digital correlated, this shouldn't be a problem with your DIO module into the Groove 4. Please take a look at the following link for more information.

    With the help of internal counters on one NOR cDAQ-9172 as a sample for other tasks clock

    http://digital.NI.com/public.nsf/allkb/EEB574335BA0B4EB862572060055E9DD?OpenDocument

    I would also like to refer to an example on our site which shows you how to use your correlated digital i/o clock counter. I hope this helps.

    NOR-DAQmx: Digital Correlation of e/s with NI CompactDAQ and LabVIEW

    http://zone.NI.com/DevZone/CDA/EPD/p/ID/5256

  • Windows Update keep repeating the same updates KB2676562 and KB270511

    Original title: update for Windows XP (KB270511) security will not stop asking an installation!

    Update for Windows XP (KB2676562) security and update for Windows XP (KB270511) security won't stop asking Installation, even after several installs!

    Hello

    Were there any changes (hardware or software) to the computer before the show?

    I suggest you perform the steps mentioned in the link and checking.

    Windows Update or Microsoft Update repeatedly offers the same update

    http://support.Microsoft.com/kb/910339

    You can run the automated FIXIT and check if this may help; If it isn't then you can perform other manual steps mentioned in the link.

    Note: there is a risk of data loss if all the files are infected and which can be removed in the cleaning process.

    You can also check:

    MS12-034: Description of the update of security for Windows kernel-mode drivers: 8 may 2012

    http://support.Microsoft.com/kb/2676562

    Hope this helps and keep us informed if you need help.

Maybe you are looking for