Minimum requirements of DAQmx PCI 6229

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• problems syncing multifunction with PCI-6229

  Hi, I use PCI-6229 and LabVIEW 8.0 for synchronized of the thermocouples and voltage measurements. The diagram is attached here. Here are my questions:

  (1) with the analog inputs of TC is ranked very first and followed with inputs analog voltage, as shown in the diagram, it works fine. But once the tension AIs are placed first and followed with AIs for thermocouples, thermocouple reading makes no sense, for example telling 25 deg C, the program shows strong fluctuating temperature 10-80 deg C.

  (2) the delay time using DAQmx Trigger, here I put the Start.Delay = 2, Start.DelayUnits = ticks. And sampling rate = 1000 Hz for sample clock VI. Then, is equal to 2 X (1/1000 second) delay time = 2ms? If no deadline is set, which is the time between the trigger signal and actural reading? Will it be the time device resolution 50 ns?

  All entries would be very appreciated.

  

  Hi Matt11,

  (1) the order that you specify strings in your task will affect the order of scanning.  In other words, when you add the channels voltage before channels of temperature, the material can enjoy the tension or s channels followed by the string (s) temperature.  Since the 6229 is multiplexed, it comes to each channel sequentially switching in a single ADC.  In your case, it seems that the tension on the ADC to measure voltage not had time to resolve completely prior to taking the measure of temperature.  We refer to this sometimes as ghosts in extreme cases where the value measured on channel b mimics the tension on the channel.

  I think that you have found that you can get this by adding the TC task first.  You could probably also get the same result by allowing more break-in between channels on your scan list.  You can set the time between the channels with a Timing DAQmx property node (you can set the property is the clock frequency convert, which is the opposite of a waiting time).  For slow sampling rates, sets DAQmx convert a default clock rate up to a minimum of 1/14 US (on the x 622).  If your overall sample rate is less than 1/14 us (about 71 kHz) then you should have room to lower the clock rate to convert more of this if you wish to allow more time to settle between the channels.

  I'm a little surprised that you see errors because of it (generally, the problem comes from a signal source of high imepdance measure or when sampling at higher rates), but then again, the temperature measurement would be very sensitive to small voltage fluctuations since you deal with thermocouple voltages at room temperature.  Given the order of scanning affects your measure the problem is almost certainly introduced leaving not enough time for the ADC to settle after reading your string tension.

  (2) ticks means actually timebase tick rather than the graduations to sample.  The minimum is always 2, but this match 2 graduations of 20 MHz (100 ns) time base from which the sample clock (unless you choose otherwise or specify a sampling rate less than 20 MHz / 2 ^ 32), instead of 2 graduations of the 1 kHz sample clock (2 ms).  In fact the trigger is probably performed asynchronously at the base of your time, if you are anywhere between the graduations of 1-2 the basis of delay time (50-100 ns) according to the relative phase of the trigger to the time base.  If no time limit is set, the default value according to me is still 2 ticks which is the minimum that allows hardware (you can check on your own by reading the property node if you wish).

  These points should be compatible between different driver versions, with the exception that DAQmx chose by default convert rate differently in earlier versions of 7.4.  Select the conversion rate is a compromise between the settling of deadlines and the channels are sampled how "simultaneously" on the MULTIPLEXED Board.  The final result in point 7.4 of DAQmx was a compromise apparently arbitrary add 10 US for the minimum conversion period and use this as the maximum by default between the channels.  The user can of course always set the clock to convert to all what best fits their application (in your case, you might want to allow a settlement more between each channel).

  Best regards

• Measurement of the temperature with the PCI-6229

  I was announced in an old thread and do not receive and answer, so I thought I try a new.

  Link to the old thread: http://forums.ni.com/ni/board/message?board.id=250&thread.id=14920&view=by_date_ascending&page=1

  I'm trying to measure temperatures using thermocouples using the PCI-6229 and I use two SBC-68LPR to make the connection.  They are not reference on them joints.

  After moving down from enugh to careful reading of the old thread I mentioned above and I think I knew what I should do.  Here's what I do now:

  Create a task - DAQmxCreateTask

  Create a channel for this task - DAQmxCreateAIThrmstrChanVex thermistor

  Create a number of channels of thermocouple for this task (DAQmxCreateAIThrmcplChan) using the cjcsource DAQmx_Val_Chan option and specifying the string thermistor as the source channel

  Start this task - DAQmxStartTask

  Get the temperatures - DAQmxReadAnalogF64

  Stop the task - DAQmxStopTask

  Disable the task - DAQmxClearTask

  I have not yet hooked, but I doubt that it is the cause of the error.

  A few more details (pardon my Delphi):

  Create the channel of the thermistor

  TmPcName: = ' Dev1/IA.19 ";

  Secret: = DAQmxCreateAIThrmstrChanVex)
  TcTaskHandle, / / task handle
  @TmPcName, / / physical channel name
  @TmChName, / / name of channel
  -80,                                   // Min range
  80,                                    // Max range
  DAQmx_Val_DegC, / / units, ° C
  DAQmx_Val_ResistanceConfiguration_4Wire, / / 2-wire, 4-wire, etc.
  DAQmx_Val_ExcitationSource_External, / / source of excitement, external
  1, / / value of excitement
  9.376e-4,                         // a
  2.208e-4,                         // b
  1.276e-7,                         // c
  30000);                            Resistance of reference

  Creation of the channel of thermocouple:

  TcPcName: = ' Dev1/ai23;

  Secret: = DAQmxCreateAIThrmcplChan)
  TcTaskHandle, / / task handle
  @TcPcName, / / physical channel name
  '',                                     // Channel name
  0,                                    // Min range
  1000, / / Max range
  DAQmx_Val_DegC, / / units
  DAQmx_Val_DegC, / / type of Thermocouple
  DAQmx_Val_Chan, / / source CJC
  25, / / value of CYC, so DAQxm_Val_ConstVal
  @TmPcName);             CJC channel, so DAQxm_Val_Chan

  It looks like 4 scales is required for voltage excitement thermistor measurements.

  In addition, it seems that external excitation is necessary in my case, PCI-6229.

  Everything works if I use a CJCConstant.  When I do this I use the same code to create channels of thermocouple, but I spend creating the channel of the thermistor.  When I try to use a CJCChannel I get an error saying "value required is not supported for this property value," which occurs when I call DAQmxStartTask.  I don't have no idea of what this message refers to and the best I can tell the properties that I've specified sense.  The constant termistor are from actual thermistor, that I found on travailleursduweb.com.

  I could also use some help to know how to connect the thermistor.  Looks like I need to fab, a thermistor circuit myself, with a stable voltage to power the termistor and use a double-ended analog and reference to the channel.

  Thank you

  Mike

  The error of thermocouple type was a type-o in the post.   Thanks for catching it.

  I think I found the problem.

  I wrote a small program to test for Thermistors and I went to using the routine exctation of tension for a common routine of excitement (... IEX instead of... Vex).  I had been by specifying a minimum value less than 0.  I changed it from-80 to 0, and it works now.  However, I got an error in division by zero, intermittently, when you read a thermistor channel.  The error is not in my code.  It occurs when you call DAQmxReadAnalogF64 for the first time and I'm not all mathematical related to this call.  I'm still looking into it.

• With PCI-6229 NMI Parity error

  Currently, I'm trying to get a PCI-6229 to work with one of our lab computers. We'll use LabVIEW 8.5.1 with DAQmx 6.7.1 to program the card. Using our measurement VI owner, the computer will crash at some point (not really in reproducible way) with a blue screen saying "NMI: Parity Check / Memory parity error. All the tests of auto and examples of NOR (delivered with LabVIEW) perform well however.

  Most likely, this problem is not a RAM issue (MemTest I tried, different memory chips, different memory banks). Also, the PCI computer bus works very well otherwise (for any other acquisition cards for example). Annoying enough, the card seems to do a great job in an old and slow computer. Which is maybe something to look at? Or are there other ideas?
  Our workplace is a Fujitsu-Siemens of Celsius M460 with BIOS version 6.00 rel. 1.09 running Windows XP (32-bit version). The software to use with the card is LabVIEW 8.5.1 with DAQmx 6.7.1.

  Dear Lutz,

  I could reproduce the blue screen, and
  changed your program in order to avoid the race condition. What is
  actually happens is you want 2 tasks over time the
  AOSampleClock as a source before the task of AO started.

  When
  programming as in the example I sent you (see attachment VI), you
  shouldn't deal with this blue screen problem more. However, I recognize
  that such a thing should not happen even when it's 'bad' programming... I'm going to
  inform the development so that it will be corrected with the next DAQmx
  version of the driver.

  Merry Christmas,

  P. Lawrence

  National Instruments

• problem setting daq virtual channel to PCI-6229

  Hello

  I have trouble to set up a virtual channel to PCI-6229.  It comes to LABVIEW 7.1.  I am updating a VI in LABVIEW 6.1 to 7.1.  When I go through the Assistant of MAX, I get it configured how exactly it is about the version of LABVIEW 6.1, but then under device, there are not listed, although MAX recognizes the labview map in the NOR-DAQmx devices section.

  Please help me on this one, as I'm new to labview and cannot find another way for this VI to work but with virtual Renault.

  Thank you

  Hello

  The PCI-6229 is a map of series M and it is supported only by DAQmx Device Driver

  Since you MENTIONED that it is the virtual channels in LabVIEW 6.1, your old VI must use of the API OR-DAQ traditional (old)

  Howerver the transition from the traditional DAQ in the DAQmx will certainly not be a major concern for you

  Since you're new to LabVIEW, you can quickly adapt to the use of DAQmx

  The following links should help you to learn and get into programming with DAQmx

  http://zone.NI.com/DevZone/CDA/tut/p/ID/3021

  http://digital.NI.com/public.nsf/allkb/BB06D0620FDD7ADB86256D2700557BFC

  http://zone.NI.com/DevZone/CDA/tut/p/ID/5375

  http://zone.NI.com/DevZone/CDA/tut/p/ID/2744

  http://zone.NI.com/DevZone/CDA/tut/p/ID/4342

  No matter what other assistanceyou seek, let us know

  Kind regards

  Dev

• Minimum requirements for Notes?

  The minimum requirements here system requirements for iCloud - Apple support , it does not note.  No one knows what would be the minimum version iOS on iPad for Notes synchronization?

  Jeff,

  I think that iOS 9 is required... Enhance your notes with iOS 9 and OS X El Capitan - Apple Support

  Use of Notes on your iPhone, iPad and iPod touch - Apple Support

  Notes (El Capitan): See notes on all your devices

  

• Preparation of an installation of Windows XP Home edition CD with a MINIMUM required drivers for A200-1AX

  Greetings,

  I am trying to install Windows XP Home edition on my old days by Satellite A200-1AX. Today, I tried to boot from the CD of Windows XP Home edition or after the copy of the system files, the laptop produces the error that Setup did not find any hard disk during the Installation of Windows XP. I looked on the internet and found the following page:

  http://www.howtogeek.com/HOWTO/Windows/resolving-Setup-did-not-find-any-hard-disk-drives-during-Windows-XP-installation/

  Explains how to resolve this problem. So I try to make my own installation CD of Windows XP Home edition with the necessary drivers. My first question is: what are the minimum required drivers to ensure a smooth installation process until I get the XP running? It is not necessary to install the drivers for all the A200-1AX since the first installation of XP, I can always go back and install those remaining of the XP; but I don't want the installation process interrupted due to a missing driver where I have to repeat the process of manufacturing more install of WXP CD custom. The list of drivers and devices provided by Toshiba is too long to write on a single installation with XP CD.

  My second question is: there is an update of the bios/firmware required in accordance with the instruction list. Is it necessary BEFORE or AFTER the installation of Windows XP Home edition?

  If I decide to go back to VISTA using the recovery CD, I must restore the bios/firmware?

  Thanks in advance for your answer.

  Best regards, Ashraf.

  > My first question is: what are the minimum required drivers to ensure a smooth installation process until I get the XP running

  You will need to include only the Intel Matrix Storage Manger for the XP CD again. Without this iMSM XP will not see the HARD drive
  This driver is important. Other drivers can be installed after the installation of XP!

  > My second question is: there is an update of the bios/firmware required in accordance with the instruction list. Is it necessary BEFORE or AFTER the installation of Windows XP Home edition?

  There are 2 versions of BIOS; One for Vista and one for XP. Generally, the update of the BIOS must be made before the instillation of OS but you can also try to do after installing XP. In both cases, the update of the BIOS would be possible.

  > If I decide to go back to VISTA using the recovery CD, I must restore the bios/firmware?
  Generally, Yes! Without the good BIOS features like the FN buttons could not work properly!

• Satellite P300 - 19 p: impossible to install WIn XP IMSM driver - does not meet minimum requirements

  Hey there,

  I just finished installing Windows XP Pro (32 bit) and have encountered a problem during the installation of a driver of some.

  When I try to install the driver IMSM Intel 7.8.0.1012 I get this error message "error: this computer does not meet the minimum requirements for the installation of this software, the installation program closes.

  Help, please
  Brad

  Post edited by: stickmen404

  What version of Windows you have installed, SP1 or SP2?
  Have you changed your settings of the SATA controller in the BIOS?

  In the end, I think you don t he need at all. I installed Windows XP Home on A300 and have the same problem. Without this driver WXP THAT works well.

• Satellite M70-193: installation of the graphics driver - issue minimum requirements

  I can't install the driver on my M70-193, this meesage is coming "this system does not meet the minimum requirements for installing the software. Setup will close. What can I do? Thankss...

  Hello

  Very strange?  :|
  How have you tried to install the graphics driver and what graphics driver you tried to install?
  You must use the on the Toshiba page.

  I recommend you to first download the graphics driver.
  Then go to Device Manager and remove (uninstall) the graphics card in the system.
  After restarting again the OS should automatically find the new device and ask start the installation.

  In this case, you must follow the installation procedure and install the new driver downloaded.

  Good luck

  Good bye

• 15 - n204tx: Minimum requirement problem during installing the drivers

  Hello

  I am trying to intall the graphics card intel HD, those that were available in the section "downloading software and the driver", there are 2 configurations different IE sp64572 and sp65212, two of them are generating an error when I try to install, it says: "this computer does not meet the minimum requirements for installing the software.

  PS: I have Windows 8.1 pro. 64 bit

  Then I went on the site intel and tried to download a driver to win 8.1 64 bits that did not also

  Please can someone tell me how to solve this problem

  Thanks and regrads

  Loriette

  Hi, George:

  I think that the driver you need is sp64572, so let's try to install it manually.

  In Device Manager, expand display adapters, right-click the Standard VGA card and select "Update Driver Software".

  In the next window, select "Browse my computer for driver software", then "Let Me pick from a list of drivers for devices on my computer.

  In the next window, click on the button "Floppy", then go to C:\SWSetup\sp64572\Graphics\ and left click on the 57005.inf file to select it and then click Open.

  Click 'Ok' and then click 'Next' and see if the pilot goes like this.

  One when you're done, click on 'Close' and then click 'Yes' to restart the laptop.

  If this is the case, you need to install the graphics driver nvidia, then restart the PC.

• Problem of clock sample e/s digital PCI-6229

  Hello

  I use PCI-6229. I need to use the digital output channel to generate pulses of 20 kHz 30% duty cycle.

  The datasheet shows the sample clock frequency can be 1 M Hz. But in may, only 100KHzTimebase may work to generate. But acctually I need at least 200K Hz.

  I've done the Vi is attached. Can someone help me with this problem?

  Thank you

  Hello ossoo,

  The PCI-6229 is not a timing engine digital to create a digital task which runs at 1 MHz, you must use an external sample clock.  However, one thing you can do is generate a pulse train at your desired frequency using a meter integrated 6229 and then using this output meter as the sample for your task digital clock.  Take a look at the attached amendment, I made to your VI which shows how to build your digital task to 1 MHz using the meter on board.  You can change the frequency of the train of impulses of the meter in order to change the frequency of your outputs digital.  Please let me know if you have any questions.

  Kind regards

• About precision for PCI-6229

  We use PCI-6229 and make the following wiring: released AO1 is connected to the entrance of the AI6, AO0 output is connected to the AI7, Both AI6 AI7 are configured and wired in incremental ways. I have checked the wiring, grounding, plug on the accuracy, the calculator of accuracy on the web site OR.

  We have a small application that writes some values to the AO channels, which, in turn, go directly to the channels to HAVE it.

  The application writes the values of every 1000 msec, playback is every 50 milliseconds.

  That is the problem. For the first pair (AO1-> AI6) values are very close, but the second pair on the same terminal (AO0-> AI7) are very different. And the tension of surplied at AO, the greater the difference.

  I read that the accuracy gets worse when the voltage becomes smaller, but why accuracy is so different for channels on the same card?

  Here are a few values.

  AO1                AI6                   AO0                AI7

  0.011477 0,011719 0.006868 0,007812
  0.011464 0,011719 0.006855 0,007812
  0.011503 0,011719 0.006855 0,007812
  0.011509 0,011719 0.006797 0,007812
  0.011490 0,011719 0.006823 0,007812
  0.011477 0,011719 0.006907 0,007812
  0.011516 0,011719 0.006823 0,007812
  0.011522 0,011719 0.006810 0,007812
  0,015625 0.012691 0.008088 0,011719
  0,015625 0.015488 0.010854 0,011719
  0,015625 0.015566 0.010919 0,011719
  0,015625 0.015514 0.010834 0,011719
  0,015625 0.015521 0.010867 0,011719
  0,015625 0.015527 0.010873 0,011719
  0,015625 0.015482 0.010854 0,011719
  0,015625 0.015508 0.010880 0,011719
  0,015625 0.015495 0.010899 0,011719
  0,015625 0.015514 0.010860 0,011719
  0,015625 0.015462 0.010821 0,011719
  0,015625 0.015514 0.010821 0,011719
  0,015625 0.015547 0.010828 0,011719

  Thanks in advance.

  Hello vera,.

  Our maps of the M series have a digital-to-analog converter, separate for each channel of the AO.  Thus, each channel AO will have slightly different properties and inaccuracies, but they will all conform to specifications.

  Kind regards

• PCI-6229 60 Hz noise and drift voltage

  I'm having some trouble with an acquisition of data PCI-6229, connected via a CB-68LP.  I'm under Labview8.6.1.

  The problem is with all the analog inputs. There seems to be a kind of noise in the signal, and I can't determine a reason for this. As it is, I have nothing plugged to the computer other than the CB-68LP.  This block of connection and data acquisition have been know (in the month) to function properly.

  The problem is that any signal seems to have a loud noise (1V_pp @ 60 Hz) above it.  So if I check playback on an analog channel of entry without any link with there will simply be a sine wave a 1Vpp from 60 Hz.  In addition, the sine wave slips a lot (a DC offset), usually to settle about us - 6V.   I just can not get to a good reason for this.  The input will be read in another signal (the same DAQ card or even an external function generator) and reading will look just as (InputSignal + 60 Hz noise + offset CC).

  I run the diagnostic tool (version 2.0) and everything seemed to have passed this test, but I don't know if that means anything.  Essentially, the jury seems to work, but there is a signal from noise important along the way.   I have a hard time thinking that it could be the result of a link between the acquisition of data and the connection block.

  I have everything set up in differential mode, and I'm pretty confident in the wiring between the block and the Library to which the block is attached.

  I've included what labview bed AI0 when 1. nothing is attached 2.  5.75V_pp @ 360 Hz square wave came.  I have also included the results of the diagnostic test.

  See you soon,.

  -ben

  It's awesome Ben,

  If you have problems of noise in the future the article following the Developer area has really good information, cordially.

  Wiring and considerations of noise for analog signals

  Good luck with your application.

  Scott M.

• Negative outputs analog of the PCI-6229

  I appreciate this question may seem a little primary for some of you, but I spent hours looking for an answer with no luck.

  I have a card from e/s NI PCI-6229 M series I want to use to order a proportional hydraulic valve. The valve in question takes input in the range from - 10v to + 10v, which fortunately is the flow of the IO card range.

  My question is this; in order to generate a negative voltage (-) through the valve, what I need to connect to the two terminals (AO0 and AO1) AO or can I connect to a single AO (AO0) and the ground terminal (ALWAYS)? Or to say it another way, can the material generate a lower voltage to ground thus creating a negative through the valve potential difference if one is ALWAYS used?

  Thank you very much.

  James

  Hi James,

  My mistake because I thought you were using LabVIEW. In theory, you should still be able to set the output programmatically.

  This link from the site Web of The MathWorks shows how to vary the values of your analog output when someone was using a PCI device , so it can be useful.

  I think the block National Instruments analog output is likely to be also useful.

  Having not used the xPC Target before, it's hard to be sure if. I highly recommend using LabVIEW next time

  And yes I count not that you went on your wiring in the correct manner.

  Kind regards

• PC health check-up according to my monitor does not have the minimum required display settings and change the DPI by default survey

  Original title: DPIdefsault level

  I am trying to install a pc health check-up for my laptop but it says my monitor does not have the minimum required display settings and change the default DPI level.  How do I do that?

  What version of Windows?  You can change the DPI on Windows XP but right click on your desktop, choose Properties, selecting the tab settings, clicking on advanced and change the dropdown to DPI.  Other versions of Windows have similar steps.