Low profile counter/timer board

Does NI (or anyone else) make a low-profile counter/timer board? Perhaps with specs similar to 6602? If not, are there some other options that I could look into (I think the sample rates may be too high to use USB)?
Solved!
Go to Solution.

Hi greatgrandpadog,
Unfortunately, NI does not have any counter/timer solutions that are low-profile on PCI.
Our cDAQ-9171 single slot USB chassis has four 32-bit counter/timers that can use an onboard 80 MHz clock (detailed specifications).  For external signals, you would need to use one of our digital i/o module which have various specifications.  You can find a list of them here.  This will be the best way to go for a compact USB counter/timer.  If you have additional i/o, take a look at our CompactDAQ Advisor, where you can use a 4- or 8-slot chassis to expand your i/o in a single system.  For more sophisticated control, CompactRIO offers a similar platform but with FPGA and Real-Time for greater customization and reliability.  There is an online advisor for that as well, here.
Regards,
Chris E.
Applications Engineer
National Instruments
http://www.ni.com/support

Similar Messages

  • Counter/Timer Waveform

    I would like to convert period measurements (RPM data) received from my counter/timer board into waveform data type so that I would be able to conduct frequency analysis on the data (e.g. FFT). Have tried with limited success interpolation & decimation techniques. Would be grateful for any suggestions.

    Malfesto,
    I had a look and can offer up a few comments:
    1. I don't understand your comment about "truncation error" in the slow speed pulses case. Perhaps your are remarking about the "glitches" in the slow data embedded in the block diagram array? More on this a bit later...
    2. At least at a quick glance, the interpolation seems a little funky. I didn't spend a ton of time wrapping my head around it so maybe it's actually ok, but I saw a finite difference that would act like a derivative of the period, and a scaling factor based on the average period -- things that make me go hmmmm.
    Also, if you zoom on the graphs for the Slow Data, you can kinda see that the "Post Processing Graph" looks like a derivative of the "Pre Processing Graph". I suspect you need to rework your interpolation method.
    3. When I did a similar project, I think I first converted all the periods to frequencies and also generated a "sample time" array that was the cumulative sum of the periods. (I toyed with tweaking the time array so that the timestamp would correspond to the midpoint of the interval that I had converted to a frequency. I don't recall now whether that tweak proved useful enough to bother with).
    Once I had laid out arrays for frequencies and (unequally-spaced) sample times for those frequencies, I could generate an equally-spaced time array at a desired "virtual sampling rate" and interpolate to create new "virtual frequency" values. Since I was merely post-processing data, I think I also used the native LabVIEW array functions 'Threshold 1D Array' and 'Interpolate 1D Array' in the interpolation process.
    Now, before going into an FFT you'll want to remove the huge DC offset. This may be as simple as subtracting the mean or median frequency from all entries if you are nominally at constant speed.
    4. Your raw dataset for Slow Data has suspiciously periodic glitches in the periods. There is a very strong and dominating pattern that repeats every 16 intervals. Your typical period is registering about 10 million timebase cycles. However, in every set of 16 periods, you get one period around 27 million and another around 35 million.
    I don't know how you gathered your "Slow Data" values, but there seems to be a systemic error in the measurement. That sort of one-sample discrepancy looks very suspicious. I'd urge you to determine the source of those glitches and try to eliminate them. They don't appear to be telling the truth about the motion you wish to characterize. The device you measure doesn't by chance start and stop or go back-and-forth during your measurement, does it?
    Hope this helps.
    -Kevin P.

  • WANTED: NI PXI-6602 counter/timer

    I'm looking to buy a used NI PXI-6602 counter/timer board. Got one?

    "Zvezdana S." wrote in message
    news:[email protected]..
    > Hugh,
    > To possibly obtain an used board from National Instruments, you should
    > contact your regional Internal Sales Representative (ISR) for possible
    > used boards. If you are not sure who your ISR is, generate a service
    > request at:
    I never knew NI had an SRQ line we could pull.
    Craig Graham
    Physicist/Labview Programmer
    Lancaster University, UK

  • Low-Frequency measurements using counter/timer

    I am trying to measure speed, and am using the FP-502 counter timer module to count the pulses from my sensor. The field point example that uses a fixed width gate pulse will not work for my appliation because I need a gate pulse so big that it updates way to slow.
    Does anybody have any sugestions on how to measure a low frequency signal using a counter/timer?
    Thanks
    Dan

    Hello guys
    Thanks for all your sugestions I have the final results. I got it to work but I would like to add some comments for anybody who is trying to attempt this.
    Triggeing on the gate is a must for low frequency measurements. I used the divide by sugestion however using a factor of 3 only gets you about 60 Hz after that you can't sample fast enough. My application required me to measure from 0 to 150 Hz. I added a "gear shifter" routine where the terminal count was set to 3 on frequencies lower then 45 Hz and 15 for frequiencies greater than 45 Hz. Using a terminal count of 15 for all measurements made the udate rate on really low frequencies way to slow i.e. .5 seconds for 20Hz (check the math on this).
    I a
    lso needed to cascade the counters. At low frequencies the count went higher than 6550. Using the previos channel function of the fieldpoint module enable me to get 32 bit worth of terminal count data.
    Finally I needed to add a timeout condition for 0 Hz. If there are no pulses coming from the senser the program displays the last value read. That won't be 0. So I added a time out routine that if I didn't see a pule in a certian amout of time, output 0 and reset the gate count.
    Thank you for you help you relly saved me. I hope my comments made sense.
    Dan

  • Counter/Timer Pulse Train generation

    Hello,
    I am having some trouble understanding why a particular VI I have isnt working(upper part of image below), I was wondering if someone could give me an idea of the cause from the error message.  I have a counter/timer which I am using to generate a pulse train.  It works fine on 'Continuous samples'  but when I switch it to 'finite samples' I get a 'resource is reserved' error when it gets to the DAQmx 'Play' VI
    I made a separate VI (lower part of image) and it works just fine with finite samples.  So  I am basically wondering what is different about finite versus continous sampling which could cause a resource to be reserved or not. (the board is a PXI 6281 if that matters)
    Thanks,
    Adam
    Solved!
    Go to Solution.

    You're correct on what the problem is. 
    For what it's worth, the newer X Series boards (63xx) and 2nd Generation Compact DAQ Chassis don't require the use of two counters for finite pulse generation (although technically there is a paired internal counter to accomplish the finite pulse generation, it's not really evident to the user). These products also have 4 counters available instead of 2. 
    Best Regards,
    John Passiak

  • Macbook Pro - How to keep a low cycle count

    hey everyone,
    Basically I purchased a new macbook pro 11 days ago, and My current cycle count is also 11. I am eager to keep my cycle count down this time round as my last macbook's battery died at around the 700 mark (the laptop was around 15 months old at the time) which I am told was very high. The average apparently being around 300 for a computer that old.
    I have also read on other forums that people have managed to keep their cycle counts much much lower than 300 even for laptops over 15 months old.
    So to maintain my battery's life this time round I was wondering if anyone had any tips on how to keep the cycle count down this time round?
    Many thanks,
    Josh

    I should point out that the batteries that seem to survive the longest are those that get used--i.e. relatively high cycle counts. They are like muscles--use them or lose them. I tried keeping cycles down on my first battery and the results were that it made it only 11 months. Most of the "my battery failed..." posts we see here show a low cycle count.
    Also, you've posted a question about a new MBP in the forum for older ones made in Early 2008 and before. As the battery technology in your new MBP is different (and apparently better) and you have other hardware improvement made since 2008, you should use the forum for the current-generation MBPs here:
    http://discussions.apple.com/category.jspa?categoryID=251
    Not to worry. It's not your fault you found the wrong forum. "Original MacBook Pro" is a pretty non-intuitive label! About a dozen people a day with new MBPs end up here and sometimes get inappropriate advise if responders either don't notice of can't tell that the OP is asking about a newer Mac.

  • Can I use Intel 815EP AGP 4X Pentium and plug in 5 Nos NI 6002 PCI counter Timer cards, instead of going for expensive PXI based solution? Hope there will be no degradation in performance - when used for constructing an Energy Meter test Bench.

    I was recommended to buy NI 6002 with PXI series, 5 Nos cards($875x 5 nos), and additionally a PXI rack costing about $ 2195 + some min--- card to interface with the computer costing another $ 875. Compare this with $ 675 x 5 Nos for 5 Nos PCI based NI 6002 + some cablesa nd connectors for synchronisation.
    First option is extremely expensive. But NI marketin manager will be glad that he sold more harware. But I want the truth. Why can't Intel 815 Pentium board be used?

    I am addressing the question if using PCI-6602s instead of using PXI-6602s will affect the performance, and the answer is NO. 6602 counter/timer devices comes in two different form factors, PXI/Compac PCI and PCI. The accuracy and performance is the same for both the PXI and PCI 6602s. However, using PXI solution will allow users an easier time with synchronization since that is the provided in the backplane of the PXI chassis. Additionally, if you ever need a higher accuracy solution you can add the 6608 device which has 75 parts per billion ppb vs 50 ppm of the 6602 devices. With 6608 plugged in the second slot of the PXI chassis (the one next to the controller), the high accuracy timebase is automatically shared acrossed the backplane of the PXI chassis which mean
    s that other 6602 devices in the chassis will share the same accuracy of the 6608. If the difference in the accuracy is not a concern and you are currently not ready to invest in the PXI platform, then you can go with the PCI 6602 devices.
    Best Regards,
    June Zhu
    National Instruments
    Digital and Timing Product Support Engineer

  • How to test the low level duration time ?

    see attached vi, i want to test the low level duration time, how to do that ? thanks for help !
    Attachments:
    time test.vi ‏68 KB

    Hi ateprojec…,
    your vi is not executable for me! To measure the time you can use the "Tick Count (ms)" function.
    [edit] ok, i think it´s not the time you want. Can you explain a little bit about what you mean? [/edit]
    Hope it helps.
    Mike
    Message Edited by MikeS81 on 06-17-2008 09:13 AM
    Attachments:
    Unbenannt1.PNG ‏8 KB

  • How to count time between two pulses

    Hello everyone,
    I want to count time between two boolean pulses?  Can anyone give me an advice? Thank you in advance!

    Hello Michael78,
    You've right. I have a DAQ board and i want to acquire torque and angle (from a torque transducer). I already done that, but sometimes it doesn't work properly. To acquire this, i count sign changing of the torque to acquire exactly one period (3 sign changing). Torque have a noise, and when passes through zero, count more than 3 sign changing at a time, and this stop my acquisition (figure 2). I want to set a time between 2 counting sign . I tried something with tick count...but i made something wrong . I hope you understand me....
    Attachments:
    Capture.PNG ‏51 KB
    Capture2.PNG ‏47 KB
    Capture3.PNG ‏123 KB

  • Counter/timer high resolution

    Dear all
     I have developed a counter-timer program by using NI PCI-6601 card and LabVIEW 7.1 on P-IV with Windows XP.
    It gives satisfactory results when I apply i.e.
                                                                  Input 100000 Hz at 1 sec high Time and 1.00E-7 sec low time  which gives output 100000 counts,
                                                                  Input 100000 Hz at 0.5 sec high Time and 1.00E-7 sec low time  which gives output 50000 counts and
                                                                  Input 100000 Hz at 0.2 sec high Time and 1.00E-7 sec low time  which gives output 20000 counts
     But when I goes to achieve high resolution it gives incorrect data i.e.
                                              Input 100000 Hz at 0.1sec high Time and 1.00E-7 sec low time  which gives output 20000/10000 counts, and below this value it also gives wrong output data.
                                                         I want to achieve .001 sec high time.
                                                         Please help me to solve this problem.
    Best Wishes
    Ishfaq

    Hello Neal M,
    Thanks for reply and sparing time for me. I am using counter-0 for reading and counter-2 for pulse output.
    I want to achieve the following readings/counts at respective inputs which are following:
     Input 100000 Hz at 0.1sec high Time and 1.00E-7 sec low time  then the output should be 10000 counts,
     Input 100000 Hz at 0.01sec high Time and 1.00E-7 sec low time  then the output should be 1000 counts and 
     Input 100000 Hz at 0.001sec high Time and 1.00E-7 sec low time  then the output should be 100 counts.
    I am also sending you "counter timer high resolution.vi" in attachment.
    Thanks a lot again in helping me.
    Ishfaq
    Attachments:
    counter timer high resolution1.vi ‏192 KB

  • Low Profile Bracket for NX8500GT-MTD256EH

    Hey guys, I have one of these:
    http://global.msi.com.tw/index.php?func=proddesc&prod_no=1231&maincat_no=130&cat2_no=136
    And I need to buy the low-profile vga bracket so it'll fit in my slim-PC.  I've tried contacting them via email, contact submission, calling several times, but never gotten a response.  Any easier way to get one of these?  Maybe a vendor?  Thanks!

    If you would have done a search on Google you would have seen that the #1 complaint is that it doesn't come with a Low Profile Bracket... example:
    http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16814127301
    A site that sells the card WITH the low profile bracket...
    http://www.aria.co.uk/Products/Components/Graphics+Cards/PCI-E/nVIDIA+GeForce+8+Series/MSI+GeForce+8500GT+256MB+HDMI+Low-Profile+Silent+PCI-E+?productId=30971
    A site that says you can buy the bracket from MSI (but the # doesn't work anymore...)
    http://www.pricespider.com/product-reviews/997462/MSI-NX8500GT-MTD256EH-GeForce-8500GT-HDMI-HDCP-Silent-Heatsink-Video-Card-Review-NX8500GT-MTD256EH.html
    I knew of all these things already, but was hoping that the Forum had a good way of contacting MSI (because all the methods I've tried in Post #1 didn't work)

  • Audigy 2 ZS...Low profile bracket?

    Have upgraded my old PC to a small factor Fujitsu Siemens and wanted to put my sound card in as the on-board isn't really that great. Is there a low profile bracket available for the ZS?
    Thanks,
    Phil

    & I do not think you would be pleased with a low profile bracket for the Audigy 2ZS. Here is a picture of the low profile bracket on the X-Fi Forte....and I do not want you to think you would compromise with something like this:
    <img border="0" width="2" src="http://i44.tinypic.com/wb70ad.jpg" height="386" alt="low profile">

  • X-Fi Xtreme Audio low profile mounting bracket anyo

    Hi,
    I have just bought one of these cards to install in my Dell Dimension C52. I got it because it was low-profile as my case is narrow. The card will fit fine, but unfortunately, the sound card mounting bracket is too long and prevents me from closing the case. From the blank I took out of the pc case, the mounting bracket I need is 80mm long. Do Creative make a low profile sound card mounting bracket?Thanks in advance.

    @Re: X-Fi Xtreme Audio - Volume goes low, static, then comes backu Hi
    Did anyone solve this - I have started getting exactly the same problem today. There is a fairly loud pop and then the sound that normally should be coming form the machine (game or music) is very quiet and distorted. After a short while (a few minutes), it pops again and starts working again. I built this machine a few months ago and this is the first time that I have had this issue. The specs are as follows:
    XFX ATI Radeon HD 5870
    Asus P6X58D Premium Intel X58 Motherboard,
    Intel Core i7 920 D0 Stepping 2.66Ghz (Nehalem)
    Corsair XMS3 6GB (3x2GB) DDR3 PC3-2800C9 (600MHz) Tri-Channel
    Hitachi Deskstar 7K2000 2TB HD
    Intel X25-M Mainstream 80GB SSHD
    X-Fi Fatalty FPS
    The X-Fi card is from my old machine and it worked perfectly in that one.
    Many thanks,
    Dave

  • How to use Counter/timer PWM Pulse as a trigger to aquire data??

    (1) I'm using the NI DAQpad 6015 multi-function card with the new DAQmx Driver. I'm using the counter/timer (counter 0, and counter 1) to generate 2 different PWM pulses to supply my sensor circuit. each pulse is a 1 second in duration. The pulse with 5m.sec duty cycle is the supply for my sensor. In addition to that, I'd like to use the 5 m.sec as a trigger to aquire the sensor reading. The DETECTIN POINT should be the middle of the HIGH State of the 5m.sec pulse (i.e just at the 2.5 m.sec point of the high state).  
    (2) another point is: how to display the counter/timer pwm output pulses on the front pannel?? 
    Attached is the VI i'm using (Complete PWM.vi)
    regards,
    Attachments:
    Complete PWM.vi ‏49 KB

    Hello alaali,
    It sounds like what you need is a trigger delay property node.  This property node specifies an amount of time to wait after the Start Trigger is received before acquiring or generating the first sample. This value is in the units you specify with Start.DelayUnits.  This way you can still acquire using the trigger, and you can specify the delay to be 2.5 ms so that the point that you actually acquire will be 2.5 ms after the trigger.
    Hope this helps.
    Regards,Message Edited by Raajit L on 04-23-2007 04:34 PM
    Raajit L
    National Instruments
    Attachments:
    DAQmx Trigger Delay.jpg ‏6 KB

  • Sound stopped after installing hp dc7900 low profile video card

    i installed a  low profile video card on hpcompaq dc7100. since then the sound stopped working. anyway to uninstall the sound portion of the video card and use the computer's original sound card? or any other suggestion to have the computer see the new sound portion of the new video card? what can i do to make the sound come back  lol
    thanks
    This question was solved.
    View Solution.

    Hi:
    You go into the BIOS, select the Advanced Options menu.
    Go to the device configuration menu and there will be an onboard audio setting.
    It will be set to Disabled.  Change the setting to Enabled.  Save the setting there by hitting the F10 key, and again when you exit the BIOS.
    After you reboot, you will have the onboard audio back.

Maybe you are looking for