Measuring Low Frequencies with LabVIEW and FieldPoint Using [c]FP-CTR-500/502

I am trying to use this example in a LabView 8.0 and a Field Point FP-CTR-502 module but without any sensor I get frequency and period values.
Is that possible to use this example with LabView 8.0 or not?
I am trying to use an anemometer Campbel Scientific A100R.
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3ED7556A4E034080020E74861&p_node=174404&p_source=External
Attachments:
Low_Frequency_Measurement_CTR_LV71.vi ‏193 KB

You can launch MAX from start\programs\National Instruments\Measurement & automation.
Concerning source signal wiring, you can have a look to the following link : http://zone.ni.com/devzone/conceptd.nsf/webmain/01F147E156A1BE15862568650057DF15?opendocument
Hope this helps,
Manuel R
AE dans une autre vie

Similar Messages

  • How to switch central frequency fastly with labview and USRP?

    Hello everybody,
             Recently I was making a frequency hopping receiver with labview and USRP N210 and SBX. The transmitter works on the 2.4G band, and it changes from one central frequency to another every 65536us. As I think, if I start receiving at the correct time, and  change the central frequency of the USRP every 65536us, I should be able to receive the data.
        But I find that, when usrp switch form one central frequency to a different one, it spends nearly 48ms and when it switch from one frequency to the same one, it only spends 3ms(I test the performance by modifying the niUSRP EX Rx Continuous Async Reconfig on the Fly.vi example). So if I want to follow the hopping sequency, I may can only receive 17ms data because I have to save time for switching central frequency. 
         My problem is that: why usrp changes central frequency so slow,  how can I make the process faster? If I want to follow the hopping sequency, can anybody give me some good advice? Thanks

    There is an attribute "LO Frequency" that you can use to lock down the frequency of the local oscillator.  Then, when you set the "Carrier Frequency" attribute, the difference between the carrier frequency value and the LO frequency value will be realized by frequency shift in the DSP in the FPGA.  Changing this "digital" frequency shift value is much faster, since you don't have to re-tune the local oscillator.
    Let's say you're sweeping from 2.44 GHz to 2.46 GHz.  Set the "LO Frequency" to 2.45 GHz then Commit.  Then, in your loop, program the "Carrier Frequency" attribute from 2.44 GHz to 2.46 GHz.  In the loop, it will only program the digital frequency shift, which will happen much faster.
    Another tip is to use the property node to program only the attributes you want to change, rather than the niUSRP Configure Signal.vi (which sets many at once).
    For more details, see the "Configuration:Advanced:LO Frequency Property" in the NI-USRP Help, and look at this example:
    <LabVIEW dir>\examples\instr\niUSRP\niUSRP EX Fine-Tune LO Frequency.vi

  • How do i measure the frequency of a sine wave using a field point counter module

    I need to measure the frequency of the sine wave using field point. is it possible and if yes how. do i need to convert the sine wave signal to square wave. Please let me know.

    It probably would be easiest to convert the sine wave to a square wave with a simple external circuit and then use a counter module to measure the frequency. There is a shipping example in LabVIEW that shows how to measure frequency with a FieldPoint Counter module.
    JRA

  • Anyone got experience with LabView and JTAG ?

    Anyone got experience with LabView and JTAG ?
    Especially in system programming of Altera and FLASH

    Yes, I've actually driven JTAG using DIO, but this was a project in itself.
    I guess you're just wanting to get the job done! I'm currently evaluating
    gear to do the same job myself, in addition to interconnect testing. I've
    been looking at JTAG Technologies equipment. They do PCI/PXI cards and the
    SW, with a LabVIEW interface.
    They're at:
    www.jtag.com
    You'll need to be sitting down when you get their quote though - their development
    system costs about the same as a decent car!
    Cheers
    -Sean.
    [email protected] wrote:
    >Anyone got experience with LabView and JTAG ? >Especially in system programming
    of Altera and FLASH

  • I had an iphone 4s and it worked nice with facetime and imessage using my phone number but  it was stolen on December so I buy a new iphone 4s using the same cellphone number  but now imessage and facetime does not work with my number, it only works with

    I had an iphone 4s and it worked nice with facetime and imessage using my phone number but  it was stolen on December so I buy a new iphone 4s using the same cellphone number  but now imessage and facetime does not work with my number, it only works with my apple ID.   Please Help me I speak Spanish so  if my English is not ok  I´m sorry about it.
    Do you think that apple has to   reset in their database of the old serial number attached with my phone number and that’s why I can´t activate imessage and facetime with my number in the new iphone 4s?? 

    I understand all of this Meg; that is why I bought an Iphone; but never expected my phone not even give a at least a 24 or even 12 hours....I work 12 hour shifts and also would expect to have to charge each night but not twice a day or more.  I am not always somewhere I can charge my phone.
    Your points are true; however it doesn't help me......

  • I had a gift card with money and I used it on iTunes now there isnt any money...

    I had a gift card with money and I used it on iTunes now there isnt any money how to i change my payment back to none? When I try downloading any app it say "Please enter password to review billing information" I want to change it back to "none"

    Sign into your account through the iTunes app and look for a None option in the Payment Method section.

  • How can i work simultaniously with labVIEW and Excel ?

    Hello . I study engineering and need some help with labVIEW, and the connection to microsoft excel.

    Hi
    NI offers an "Report generation toolkit". You get some VI's with this toolkit and so you can directly create your reports from LV.
    Another possibility is the communication through ActiveX. There is a nice link with application notes and LV examples for that:
    http://zone.ni.com/devzone/devzone.nsf/webcategories/C3E56C69D399361E86256AB7006A9149?opendocument&node=DZ53003_US
    Regards,
    Luca

  • How to send Email with Cc and Bcc using MailPackage

    Hi ,
    we are using Mail Package to send the Email using Mail Adapter.We have a requirement where we need to send Email with Cc and Bcc using Mail Package .
    Can we send Cc and Bcc using Mail Package ?
    Thanks
    Rajesh .

    HI Rajesh,
    There is a standard structure for Receiver Mail adopter which we can get from SAP market Place but it is not provided with CC if u want to use CC then you have to go with Dynamic Configuration.
    DynamicConfiguration configuration = (DynamicConfiguration) container.getTransformationParameters().getStreamTransformationConstants.DYNAMIC_CONFIGURATION);
    /*any other required fields*/
    DynamicConfigurationKey key = DynamicConfigurationKey.create("http://sap.com/xi/XI/System/Mail", "THeaderCC");
    configuration.put(key, "ccemail @ test.com");
    Regards
    Praveen Reddy
    Edited by: Maareddy Praveen Reddy on Aug 10, 2011 12:17 PM

  • Controling heating/cooling element with labview and usb 6008 DAQ card

    Greetings All
    I'm looking for a heating/cooling type of element that I can control with labview and my usb-6008 card. Heating/Cooling will just be for clean water and the temperture range will be from 0 C to 100 degree C.
    Thanks
    The heating and cooling elements can be seperate products. Any recommendations

    A simple kettle element will of course be sufficient for upto 100°C
    To get the temperature down you need a cooling system, what springs readily to mind of course is a refrigerator.
    Just a note of warning, water and electricity are dangerous bed fellows.
    On that note perhaps one of those vortex air units would be safer - they blow hot in one direction and cold in the other, nominally to 100°C
    see: -
    http://www.airtxinternational.com/how_vortex_tubes_work.php

  • Flowmeter with FP-CTR-500/502

    Hi to all,
    any people have experiencing for flowmeter with a counter NI FP-CTR-500/502,
    its a right choice for mesureament from 4 to 400 GUS/h ?
    Many thanks in advance for any indication.
    Best regards.  

    Hi adrtab5,
    I'm not sure about what GUS/h means. Looks like a sort of "rotation rate" something like rpm but slower.
    Anyway you can find information about 500/502 specs on this KB Measuring Frequency With the FP-CTR-500/502
    And obviously in the manual FP-CTR-500 and cFP-CTR-500 Operating Instructions.
    You should see if the specification of the CTR-500 match your needs, namely the specification of your flowmeter.
    Here's an extract.
    Input Characteristics
    Number of channels.......................... 12 (8 count, 4 gate)
    Input type..........................................10–30 VDC sinking,
    compatible with most 12 and
    24 VDC devices
    Maximum input voltage....................30 VDC
    Input threshold level
    ON state......................................≥10 V
    OFF state ....................................≤6 V
    Input current limiting........................5 mA maximum
    Input bandwidth
    Count inputs ...............................50 kHz; 200 Hz with
    software-enabled lowpass
    filter
    Gate inputs..................................50 kHz
    Maximum off-state leakage
    current for external devices...............0.2 mA
    Best Regards
    FiloP
    It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.
    Richard P. Feynman

  • "How to use an Appplicom card with Labview and a Seimens PLC"

    Hi, I am using an applicom card type PCI1500-PFB to communicate with a Seimens S7-300 CPU315-2DP plc. I am using this simply to display in a labview front panel the outputs of the plc and may in the future use switches on the front panel to control the inputs of the plc. How do I do the communication? I have setup the applicam card and have comms with the plc I think. I am trying to use data socket to communicate to the plc via the applicom card. Any suggestions?
    Thanks
    Tom

    There�s a fair bit of documentation on NI�s site regarding the Applicom card.
    The following doc does a pretty good job summarizing Applicom's PCCONF and PCINIT, and the use of ReadWait and WriteWait to ensure you�ve got communication with the between the PLC and the Applicom card:
    http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/5913e03f551de3f786256a32005b4586?OpenDocument
    Since it doesn�t sound like you�re using the LV DSC module, you can stop reading once it gets into connecting to Lookout Objects.
    Once you�re sure you�ve got comm, you can do some quick tests in LabVIEW using front panel datasocket connections as shown on page 11-12 of the following:
    http://www.ni.com/pdf/manuals/323241a.pdf
    From there, it all depends on
    the complexity of your system. If simple, you could just stay with front panel connections, or you could move to programming with the Datasocket Read and Write functions.
    ... and if you get to the point that Datasocket is too slow and cumbersome, you might want to look at the LV DSC module:
    http://ni.com/labview/labviewdsc/what_is.htm?node=10418
    =====================================================
    Fading out. " ... J. Arthur Rank on gong."

  • Where can I found hardware to get analog signal from VCR and work with labview and then sample this signal in very high frequency?

    I am trying to build a Digital Video Recorder using Labview. The problem is that I found that Labview sample the signal in the order of milisecond. I wanted it to be in the order of microseconds. Also I am looking for a cheap Hardware solution if it is possible

    Your question does not make a lot of sense to me, so I will just point out a few things.
    1. The PCI-1411 works well with VCR signals. It has a BNC connector as well as a S-Video connector. The price is under $1000, so it is fairly reasonable. The amount of time you save getting it to work with LabVIEW is worth any extra cost.
    2. The PCI-1411 is sampling three colors at 30 frames per second, with an image resolution of 640x480. This is the best resolution you are likely to get from a VCR signal. The sampling rate for each byte in the image is about 28 MB/sec. This is in the microsecond range that you are looking for, I think. If you are only interested in the raw signal instead of the image, you could look at the high speed digitizing boards NI sell
    s that acquire at higher rates.
    If this information isn't really what you were looking for, perhaps you could clarify your question.
    Bruce
    Bruce Ammons
    Ammons Engineering

  • Measure pulse frequency with 4.7 volt peak amplitude

    used two shipped Measurment Studio Vb.Net 2005 Examples:
    1-Example 1 : CountDigEvents  "MEASURES PULSE COUNTS" and Example 2: MeasDigFrequency_LowFreq1Ctr  "MEASURES PULSE FREQUENCY"
    2-Example 1 works fine measuring pulse counts , however Example 2 did not recognize pulse frequency  , the pulse amplitude voltage is 4.7 volt peak
    3-during testing used counter ch0 channle by connecting Sorce0 and Dgnd pins to signal source.
    4-using Nidaqmx 9 and MIO-16xe-10 daq
    5-pulse frequency around 10 khz
    QUESTION:
    -please advice what to do to make frequency measures ?
    Thanks

    Hi MyKat,
    Note that the connections are different for edge counting and low frequency frequency measurements with one counter.  For the latter, you'll need to connect the signal to PFI 9 rather than PFI8 as you did for edge counting.
    http://zone.ni.com/reference/en-XX/help/370466W-01/mxdevconsid/eseriessigcounters/
    Regards,
    -Jim B
    Applications Engineer, National Instruments
    CLD, CTD

  • Logging data with LabView and FP-DI-330

    Hi,
    I have a problem.
    I am monitoring 6 ports of the FP-DI-330, via LabView.
    I have it runing in a while loop that desides the update frequency. It then get stored in a txt file with the time in Hours, Minutes and Seconds. I need the time in milli seconds to skill betwen the diferent input times. Because the different input´s can come in the same second.
    i have added the vi file
    Enyone have an sugestion?
    Attachments:
    FP_DI_330.vi ‏75 KB

    First of all...
    i will throw away the boolean display. But the Spreadsheet is the formation of the logfile is it not?
    I will need that to get the data nicely organized.
    I dont know how to get milli seconds displayed enywhere. If i use for example the tick count (MS) it starts with a number around 3287101, should it not start with 1 and then count up?
    "Further in your vi, you forgot to connect the current time to the Get Date/Time string. Can't you use the millisecond values for building the time-values?"
    How can i connect the current time to the Get Date/Time String? And how should i use the ms timer values for building time-values.
    file-info of the log-file? What?
    Thanks for the ideas but i could really use some help.
    I would think th
    at it could not be that dificult making a simple ms count to add to the time for every line of the logfile. But i cant get it to work.

  • Measuring high frequency with NI 9411

    Hello,
    I would like to measure the frequency of a TTL signal with the NI 9411 in a cDAQ NI-9178 chassis.  The frequency ranges from 1.6-48kHz.
    With the digital frequency counter examples in Labview, it's not picking up on the signal.  Any advice?
    Anna
    Solved!
    Go to Solution.

    Hi Anna,
    Could you tell me the name of the example VI that you are using? Also, you say that it is not picking up on the signal. Are you getting no data from the device at all? If this is the case, have you tested the device in MAX to make sure that this is not a hardware issue?
    Thank you,
    Eden S
    Applications Engineer
    National Instruments UK & Ireland

Maybe you are looking for

  • How to generate goods receipt / goods issue (gr/gi) slip no. ?

    Hi all SAP experts,    i did following steps 1) by using omc1 assigned gr/gi slip number for our plant. 2) created internal number range for no. range group code. 3) intervals are created for gr/ir slip in 2009 by using omj6 t-code. 4) assigned no. r

  • How to get rid of the Nav bar

    I want to get rid of the Nav Bar which contains Prev, Next Refresh and hide buttons. We can hide the buttons in that bar by commenting writeToolBar(); in whskin_mbars.htm file. But still unable to hide the complete bar. I am using RoboHelp 7 with Web

  • STO with account assignment catg.

    Dear All, I Have a scenario for which i need a strong help from all of you. the scenario is of I am trying to create an STO from Plant A to plant B. Plant A has status of value/quantity updates where as Plant B has only quantity update. So when I cre

  • Can't Open Attachment from an e-mails

    Hi, I can't seem to open a PPT attachment from an e-mail. When I click on the attachment, I see a download indicator but there is no progress. It just doesn't download. Can someone please help? Regards, Angela

  • How robust is PDF-Password protection? Does it also work for PDF/A?

    Several sources say that PDF passwords can be removed with appropriate software. Is this true? Can I also protect a PDF/A with a password? If not, how can I be sure that I can still open a regular password protected PDF in 10 years from now? Many tha