Amplitude measurement of a continuous signal in a given time window

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• 6733 continuous signal output generation.

  Hello

  I want to use an NI PCI-6733 map for generation of continuous signal output.

  I downloaded the modules OR measure small DDK OR 671 x & 673 x examples (PCI & PXI) and run the samples.

  Our goal is to put a few samples in the FIFO buffer and use the external update (on PFI5) to send the samples to the exit.

  Essentially a combination of AOEX4.cpp and AOEX6.cpp example should work.

  However, example 6 uses board-> DACDirectData0.writeRegister (.) to set an output value.

  To update the output, I use the following code to generate a wave of block.

  Sub
  NIPCI6733Card:nPoll_Test_T6() / / function called at 5 kHz
  {
  t67xx * Council const = & GetNI();
  Support * const theSTC = & GetSTC();

  ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  theSTC-> Joint_Reset.writeAO_Configuration_Start (1);
  theSTC-> Joint_Reset.setAO_Configuration_Start (0);
  theSTC-> Joint_Reset.setAO_Configuration_End (1);
  theSTC-> Joint_Reset.flush ();
  ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  Board-> DACDirectData0.writeRegister ((OutputHigh). 0400:0 x 0 x 0);
  Board-> DACDirectData1.writeRegister ((OutputHigh). 0400:0 x 0 x 0);
  Board-> DACDirectData3.writeRegister ((OutputHigh)? 0100:0 x 0 x 0);

  OutputHigh =! OutputHigh;

  }

  My frequency of update of application (the election) is 5 kHz. The output should run on 15, which means that each update I need to resolve before the 3 samples. I want to use FiFo for this.

  (Note: the output is triggered by PFI5 at 15 kHz)

  My idea is to 3 samples in the FiFo buffer each update of the application and leave the external trigger update of the output.

  Example 4 uses the FiFo. However, this example stops after 5 running running the same fifo data.

  How can I set up FiFo continuous data?

  370735e.PDF manual describes the following:

  With non-regeneration, old data will not be repeated. New data should be
  continuously written to the buffer. If the program don't write new data to
  the buffer at a speed fast enough to deal with the generation, the buffer
  will be negative and cause an error.

  This is what I want. Is there an example?

  Kind regards

  Peter

  Dennis,

  Thanks for your reply.

  I have whil post-its on the correct Board.

  I implement for IN-Time. It is a time real OS for Windows.

  Kind regards

  Peter

• weak continuous signal low-pass filtering

  I get continuous signals to the NI USB-6259 of multifunction DAQ device is acquiring its signals to 1000 Hz. The rate of data acquisition can be changed through the GUI, but that

  is for later analysis. The main issue here is labwindows offers many options for filtering. I was wondering if someone could recommend the best option for a LP

  Filter on a frequency of 50 or 60 Hz. are there - it implemented an easy way to put this. Basically, I want to filter the data acquired and then store it in the file that is currently present.

  I was also wondering if material 6259 filtering, if it's a better road then should I use the filter material to clean noise signals?

  mdmorar,

  The reason why you get this error is the low-pass filter property is is not supported on the USB-6259. You will need to use a filter software for your application, because there is no low-pass filter in the material. If you look under the range of libraries in CVI and select Signal Processing > IIR digital filters > features of filtering in a single step, it will give you options for different low-pass filters. They have some low-pass filters here that should help you.

• NOR-DAQ traditional (old) devices of measurement and automation explore 4.7 with LabView2010 under Windows 7.

  In measurement and Automation Explorer 4.7, with LabView2010 in Windows 7, peripheral OR-DAQ traditional (old) appears under devices and Interfaces and it allows me to create a chassis SCXI-1000, and she agrees "Reset for NOR-traditional DAQ.  However, it does not search the modules in the SCXI1000, and when I ask 'trial', he says 'Impossible to test the chassis at this time.'  The entrance of NOR-DAQmx devices for the SCXI-1000 chassis has no problem and detects the modules very well.  I need the Legacy DAQ to a popular former teaching tool that has no equivalent in NOR-DAQmx.

  Unfortunately, NEITHER-DQA traditional (old) for Windows Vista and 7 functions of the only driver on Windows 7 32-bit, as seen on the page of the driver at the end of paragraph 1 Solution. I recommend you move your program to DAQmx.

• continue to spread the message ' desktop window manager has stopped working and was closed ".

  continue to spread the message ' desktop window manager has stopped working and was closed ".

  The office then blinks and I can't use the Aero feature.

  Any correction or known issues?

  Thank you
  in2stocks

  Hello
  It is usually a video driver issue. Would like to know what controller you have and see if the manufacturer has a new driver for Vista.
  Please let us know if that was the issue.

  Mark <> Microsoft Partner

• I will not let me connect to my main, connect you to where I put my password in and then logs on just continuous vista startup repair in time ever I start my computer

  I will not let me connect to my main, connect you to where I put my password in and then logs on just continuous vista startup repair in time ever I start my computer

  Follow these steps to try to solve your problems of boot.

   

  Restore point:

  http://www.howtogeek.com/HOWTO/Windows-Vista/using-Windows-Vista-system-restore/

  Do Safe Mode system restore, if it is impossible to do in Normal Mode.

  Try typing F8 at startup and in the list of Boot selections, select Mode safe using ARROW top to go there > and then press ENTER.

  Try a restore of the system once, to choose a Restore Point prior to your problem...

  Click Start > programs > Accessories > system tools > system restore > choose another time > next > etc.

  http://www.windowsvistauserguide.com/system_restore.htm

  Read the above for a very good graph shows how backward more than 5 days in the System Restore Points by checking the correct box.

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   

  If the system or Mode restore safe work not and you do not have a Microsoft Vista DVD, make a repair disc to do a Startup Repair:

  Download the ISO on the link provided and make a record of repair time it starts.

  Go to your Bios/Setup, or the Boot Menu at startup and change the Boot order to make the DVD/CD drive 1st in the boot order, then reboot with the disk in the drive.

  At the startup/power on you should see at the bottom of the screen either F2 or DELETE, go to Setup/Bios or F12 for the Boot Menu.

  When you have changed that, insert the Bootable disk you did in the drive and reboot.

  http://www.bleepingcomputer.com/tutorials/tutorial148.html

  Link above shows what the process looks like and a manual, it load the repair options.

  NeoSmart containing the content of the Windows Vista DVD 'Recovery Centre', as we refer to him. It cannot be used to install or reinstall Windows Vista, and is just a Windows PE interface to recovering your PC. Technically, we could re-create this installation with downloadable media media freely from Microsoft (namely the Microsoft WAIK, several gigabyte download); but it is pretty darn decent of Microsoft to present Windows users who might not be able to create such a thing on their own.

  Read all the info on the website on how to create and use:

  http://NeoSmart.net/blog/2008/Windows-Vista-recovery-disc-download/

  ISO Burner:http://www.snapfiles.com/get/active-isoburner.html

  It's a very good Vista startup repair disk.

  You can do a system restart tool, system, etc it restore.

  It is NOT a disc of resettlement.

  And the 32-bit is what normally comes on a computer, unless 64-bit.

  See you soon.

  Mick Murphy - Microsoft partner

• My tosihba continues to close and restart is windows incorrered message an error and stops at system

  My tosihba continued to close and restart get windows message incorrect, an error and stops at system

  1 try this:

  http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-performance/Windows-encountered-an-error-and-will-shut-down-in/de7a9650-2011-4D05-8b36-65f8ee4c5412

  2 and to do this:

  http://www.bleepingcomputer.com/tutorials/how-to-remove-a-Trojan-virus-worm-or-malware/

• Bookmarking without popup "continue where you stopped last time.

  Hey,.

  I've been searching the forums and play with Captivate for a few days to try to find a solution to my problem, but I'm not come with all of the relevant answers.

  I am very little inspired by the look of the Captivate default dialogue window that appears when I return to a lesson. Is the one who asks to "continue where you stopped last time.

  I have seen proposals on how to change the captions and the colors, but I can't find a way to simply turn it off and do the lesson taken from the place where the user left off. I tried to turn off autocontrolee learning, but this disables bookmarking all together.

  I use the latest version of Captivate 9.

  Any help would be grateful.

  Thank you

  Guy

  They will access via an LMS System. After many hours messing around I think the only options available for me should use the TOC frame that comes with the annoying dialog box, or do not use the table of contents and this should enable the LMS to manipulate the bookmarking and auto recovery here where the user left off.

  Is that what everybody is watching?

• Measure the area and perimeter at the same time

  I tried to measure the area and perimeter at the same time, but couldn't find a way to do it. I need to cover an area and to see the area and perimeter both and two separate measure of drawing lines - one for the area of the other for the perimeter, is going to be quite tedious for me. Is there a way to see the area and perimeter in one fell swoop? I use Adobe Acrobat Professional XI.

  thx for your help

  Please check the doc: http://help.adobe.com/en_US/acrobat/X/pro/using/WS8244FB06-C3F6-40cd-9D95-261B9DAF0070.htm l #WSC59DB518-BBCA-4 d 96-8606 - 7FC19DDC0D38

  Kind regards

  Rave

• frequency of measurement of digital random signal

  Hi all.

  I want to measure the frequency of the signal. This value will be sent to any other device to vibrate the vibrator according to the value.

  For example, I want to measure this signal:

  

  I try to use your vi and extract single signal measure vi, but the result is not fair, for example, if I have no pulse on the graph the result is 11, 5 Hz (it should be 0 Hz)

  I use assistant NI USB-6210 and acquisition of data to get the data from the sensor

  Laughing out loud! All that motivates you... I don't see attachment. I commented on the block diagram on the vi attached which may help. What you can do in your data acquisition program, use is get the queue with the name of data. Then take the waveform of the DAQ assistant and use waveform components get to retrieve the values of the real signal (-1 to 1). Now use a loop with automatic indexing on table of signal and inside use enqueue to place each value of the signal on the data queue. In the joint programme filter, you can either copy the lower node in your program for the acquisition of data, or remove the loop of high signal generation and run them in parallel. The nice thing about the queues is that they can transport data between different vi on the same computer that the name is the same. If you want to do something with the frequency measures, while you can use a different queue for buffering of the data out of the loop of measure.

  Good luck!

• I want to do simultaneous 180 continuous signal phase (square) to 2 analog outputs

  Hello

  I would like to use a meter to trigger (internally) 2 outputs analog, such as the continuous AC signal to each output is shifted 180 degrees.

  I hoped to do with no external connection in addition to the ao0 and ao1 was to use a timer as a trigger counter and have a trigger analogOutput on the front and the other trigger on the falling edge to get the required result.

  However, it doesn't matter how I get there.   An absolute requirement is that two continuous AC signals are present to ao0 ao1 outputs and they are out of phase by 180 degrees and all trigger occurs on the PXI bus with no other connections external that is frequency of 25 Hz.  My card is an SMU-6363.

  I was hoping to get the hardware to do all the work of relaxation but if there is a trigger of software approach that would be

  Thank you

  That's what I ended up doing.   microseconds is quite good enough.

• How can I write to the spreadsheet or measurement produce the following signals

  Hi friends!

  I wonder how to write in file worksheet or to measure 1 and 0 of my assistant DAQ on this VI:

  It's the same VI like this: http://zone.ni.com/devzone/cda/epd/p/id/6405

  Hey,.

  You place the measurement file Express VI on your blockdiagram write and pull a cable since it's 'signals input terminal' to 'data' of the DAQ Assistant Terminal. Like this:

  

  Christian

• stop propperly generation of continuous signals (analog)

  Hello

  I want to generate a continuous wave-output analog (sine, for example) using NI-Daqmx. The example program in http://www.ni.com/example/29872/en/ works very well and does everything I want, but there are two problems:

  (1) I want to count the number of waveform periods that are executed.

  (2) if I press the stop button (or another event occurs), the program should not interrupt the generation of signals anywhere. It should complete the last period and than stop running.

  I tried to solve this problem in timing the loop while I have exactly one period per loop. It works very well for small frequencies, but for higher frequencies (for example 100 Hz - 1000 Hz) not more

  A second method used ends generation (always generate a period in a loop). But with this method there is an another serious proplem: if I make higher frequencies (for example 100 Hz or more) the loop requires too much time and the signal isn't continuous more because there is a short break between each period.

  I am new to LabVIEW, could find a solution so far and would be very happy if someone could help me with this :-)

  The key step is to make sure that the stop button is not connected to stop your loop.  In a 'simple' control system, there is a single loop, and the stop button (and everything else!) lives inside the loop.  When you press Stop, if it is connected to the loop Stop, everything stops.

  What you want is for the Stop button to report a condition, namely 'Stop at the end of the current cycle'.  If you generate data of a point at a time, you should be able to tell (by looking at the phase of the signal) when you are at the end.  One thing you could do would be to ask (for each iteration of the loop) "I am the end cycle, i.e. the Phase 0?  If this is true, and the Stop button is pressed, Stop.

  BS

• Continuous signal creation (using the PFI channels?)

  Hello

  I am new to the use of OR and its interfaces. I use the USB-6221, with its C API.

  I need to create multiple channels of continuous digital output with the cycle of the frequency and the duty.

  I used DAQmxCreateCOPulseChanFreq for the crt0 and crt1 channels and it works fine, but I need a few lines.

  Can I use the channels of the PFI (PFI0-4 for example) for this purpose?

  With the help of the DAQmxCreateDOChan I can set the PFI desired channels as DO, but how can I create the signal desired on these channels?

  Best regards

  Danny.

  Howdy Danny!

  If you try to build a train of digital pulses with a frequency cycle and specified duty then using counters shipped from the USB-6221 is certainly the way to go.  Unfortunately, as you have discovered there are only two meters of material available on the USB-6221 (Ctr0 and Ctr1).

  Fortunately, you can also use the digital output lines to efficiently create a train of pulses with a frequency cycle and specified duty.  You will need create a table of examples which, when released at the specified sampling rate, looks like a period of your waveform.  For example, if my sampling rate is 1 MHz and I want to create a square wave of 100 kHz and a cycle of operation of 20% low high/80% I would generate the following examples:

  {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}

  Please let me know if this description is clear or if there is anything I need to explain more in detail.

  Kind regards

• Time for registration of a continuous signal offset

  Hello

  I just started learning about LabVIEW and you need to complete this vi.

  I need to display the data of shift in continuous time, but I don't know how to translate it into an acceptable.

  Attachment 1 is the vi.

  Attachment 2 shows where the problem is.

  Thank you

  L/H

  How can I make the result becomes a number of contiunous?

  I don't know what you mean by "continuous number.