Similar Questions

• How to compare analog input signals?

  Hi all

  I use PCIe6363 DAQ to collect the analog input signals. Mode of input signal is continuous and single channel several example. The sampling frequency is 2 ms/s, number of sample 100KS or less. This means DAQ 100KS of collect and draw a line/curve. I want to compare the two curves. The problem is DAQ continuously collects data and plot also continuously. Would you please is it possible to compare the curves of this operation continuous operation. The main goal is to justify whether or not the signal of incomeing maintain consistency.

  Thank you very much

  Azim

  You can store a waveform in a shift register.  Then you have in memory compared to the new waveform.

• How do I get the analog input signal and send it to output analog (real time)

  Hello world

  I do a simple task in Visual C++ and I use PCI-6221(37 pin).

  Basically, I want to send the same signal of "analog input" to the "analog output".

  at the same time (or almost), to make real-time application.

  Can someone provide me with sample program please.

  I would be grateful if you could provide me with the great tutorial that explains

  step by step everything about NOR-DAQmx for C/C++ programming.

  Best regards

  Khassan

  This is my code in C++, you can optimize it if that seems too messy. This code reads the analog input signals and exports it through the analog outputs.

  To make this code additional work of the directories include and library directories must be added to OR.

  I hope it helps someone.

  #include
  #include
  #include "NIDAQmx.h".
  #include

  #define DAQmxErrChk (functionCall) {if (DAQmxFailed (error = (functionCall))) {goto error ;}}

  int main (int argc, char * argv [])
  {
  Int32 error = 0;
  TaskHandle taskHandleRead = 0, taskHandleWrite = 0;
  Read Int32 = 0;
  float64 context [1000];
  char errBuffRead [2048] = {'\0'};
  char errBuffWrite [2048] = {'\0'};
  bool32 done = 0;
  Int32 wrote;

  DAQmxErrChk (DAQmxCreateTask("",&taskHandleRead));
  DAQmxErrChk (DAQmxCreateAIVoltageChan(taskHandleRead,"Dev1/ai0","",DAQmx_Val_Cfg_Default,-10.0,10.0,DAQmx_Val_Volts,NULL));
  DAQmxErrChk (DAQmxCfgSampClkTiming(taskHandleRead,"",100.0,DAQmx_Val_Rising,DAQmx_Val_ContSamps,0));
  DAQmxErrChk (DAQmxCreateTask("",&taskHandleWrite));
  DAQmxErrChk (DAQmxCreateAOVoltageChan(taskHandleWrite,"Dev1/ao0","",-10.0,10.0,DAQmx_Val_Volts,NULL));
  DAQmxErrChk (DAQmxCfgSampClkTiming(taskHandleWrite,"ai/SampleClock",100.0,DAQmx_Val_Rising,DAQmx_Val_ContSamps,1000));

  DAQmxErrChk (DAQmxStartTask (taskHandleRead));
  DAQmxErrChk (DAQmxStartTask (taskHandleWrite));

  While (! fact &! _kbhit())

  {

  DAQmxErrChk (DAQmxReadAnalogF64(taskHandleRead,1,10,DAQmx_Val_GroupByScanNumber,dataRead,1000,&read,));

  DAQmxErrChk (DAQmxWriteAnalogF64(taskHandleWrite,read,0,10.0,DAQmx_Val_GroupByChannel,dataRead,&written,));

  }
  _getch();

  Error:
  If (DAQmxFailed (error))

  {
  DAQmxGetExtendedErrorInfo (errBuffRead, 2048);
  DAQmxGetExtendedErrorInfo (errBuffWrite, 2048);
  }
  If (taskHandleRead! = 0)

  {

  DAQmxStopTask (taskHandleRead);
  DAQmxClearTask (taskHandleRead);
  }
  If (taskHandleWrite! = 0)

  {

  DAQmxStopTask (taskHandleWrite);
  DAQmxClearTask (taskHandleWrite);
  }
  If {(DAQmxFailed (error))
  printf ("error DAQmx: %s\n",errBuffRead); ")
  printf ("error DAQmx: %s\n",errBuffWrite); ")
  }
  printf ("end of the program, press the Enter key to quit\n");
  GetChar ();
  return 0;
  }

• NI USB - 6259 BNC DAQ: analog input signal cross on the question

  Hello

  I use the NI USB-6259 BNC DAQ unit to acquire a four-channel analog signal, and I'm having a problem with a signal that affect others. The circuit, I am running is:

  I have a wire connected to a battery (two AA batteries at ~1.5V), which then feeds the signal cable to a BNC cable, which feeds an analog BNC of data acquisition channel. The field of NBC feeds to another wire, which is attached to a conductive plate.  The idea is this: when I touch the wire connected to the battery for the metal plate, I complete the circuit and thus get a binary not anything at all about 3V.  When I tested with an osciloscope using two channels (each earth connection to the metal plate) I get independent steps whenever I touch any of the sons of the respective batteries to the metal plate (i.e. it works as expected).  However, when I use it with data acquisition, whenever I touch a wire, I get a response in all other channels (3 others), even if their respective sons does not touch the metal plate.

  No one knows why this happens, and how I might be able to stop this 'cross-talk '?

  Thank you

  Veritas

  I see, and you're right.  This request will have trouble with crosstalk.  Luckily the ground channel thing should help you.

  Configure your DAQ to collect twice as many channels as you need.  Connect your wires in the odd channels and short circuit (ground) the entries of those even.

  Now when you scan the channels it will always technically crosstalk, but it will come from a channel to the ground so that there will be nothing to interfere with your measurements.

  At least that's the theory.

• How to read the NI 9201 Module lab mode analog input signal

  Hi all

  IAM using the module Crio-9012 real-time controller

  ND iam using NOR-9201 for entry and exit of NI9263 for

  I have configures cRIO 9012 on my Pc

  But how I'll take analog input using the module NOR-9201

  Thank you

  TC

  Hello

  I recommend you take a look at the following examples in the example Finder LabVIEW.  If you go to help--> find examples, you will see this window.  Just search 9201 and you will see 2 examples:

  

  I hope this helps!

• Analog inputs measures with NI6229 using the DAQmx driver

  Hello

  I have four different analog inputs connected to ai0 to HW 6220 ai3. I read these values with a single task, all 4 channels assigned to this task. When ai0 reads 7V, I see 0.8 V ai1 too, but I expect to be measured 0V. If I just assign ai1 to the task and measure all 4 channels, then I measured 0V as expected (although ai1 contains 7V, I just don't measure it).

  Another comment 'funny', is that if I change the order in which I add channels to the task, measurement errors are different.

  However, when measured with a multimeter 4-channel show tensions as expected.

  Given that my calling task is can not block, I call the function

  DAQmxReadAnalogF64 with timeout = 0 and numSampsPerChan = 1.

  Any help is appreciated.

  Thank you

  Kind regards

  Deepa

  Deepa,

  Thanks for the code snippet.

  When you call DAQmxReadAnalogF64 the first time and you set a value of timeout of 0, there is a chance that the acquisition is not yet initialized. This is the expected behavior and should not be a problem. If the timeout error died at the first call, you might ignore it or set a different expiration time for the first call only. In all cases, you should drop the first value and start with the second value.

  Jochen

• Continuous 5V output and signal of Stimulation at the same time

  Hello

  I'm out a constant signal to 5V to power a testbed and output a signal of stimulation (create a small magnetic field, etc.) at the same time.  I try to use DAQassistant with several output channels, but I can't fix an AO0 data set and the other set of data in AO1. Please notify; my code is up to this home.

  Thank you!

  Emily

  Many DAQ cards provides a constant voltage of + 5V output.  DAQ hardware do you use, and there a such output?  If so, use instead.  It will manage a current higher than an analog output.  The analog output lines are not designed to power no matter what, they are purely for signalling.

• Libraries to share with one another in the same Mac OSX

  My mac has several partitions with different OSXs.

  Can I share itunes libraries I made in an OSX with itunes in the other OSXs in PC?

  Home sharing work in the end? Do I have to allow the Internet to itunes.app in order?

  And supplementary question is, if the above is possible, which is for sharing rules, IE. a library, X, in the itunes of the score has nothing and another library, Y, in the partition of another itunes music title A, B, C, then, what happens when they share libraries? Music tracks A, B, C will be added to X, or all titles there must be gone for nothing?

  Note:

  Versions of iTunes I use are mainly ver11 and ver12 and operating system versions that I use are mainly 10.6 and 10.8.

  SaramandarG wrote:

  ....

  Can I share itunes libraries I made in an OSX with itunes in the other OSXs in PC?

  ....

  Direct access to the library is only possible if all versions of iTunes are identical.

  SaramandarG wrote:

  Home sharing work in the end? Do I have to allow the Internet to itunes.app in order?

  Home sharing works only between two or more computers that are running on the same network.

• acquisition of wireless signals and record the signal as text at the same time for 5 minutes

  Hello

  I'm wireless ECG signal and the display in waveform graph. And at the same time, I need to save it as text for 5 minutes. The problem I faced is for record of the signal, I use scripture to the extent file that saves the file as text... but everything by saving the trace speed decreases.

  I'm very new to labview so please can someone me if Miss me something in it... Please help...

  Why people always post photos of their screws rather than the screws themselves or at least excerpts?  We can't tell from the picture what Version of LabVIEW, you use (so if we post code, you will not be able to open it), and we can not 'play' with your code and try without, ourselves, by hand, trying to recreate your diagram (sometimes very small).  Please, help us help you!

  This is in any case helps to familiarize yourself with the design of producer/consumer model.

  1. Open LabVIEW.
  2. Click on 'File', choose 'new '.... "(no new VI), then (in models) producer/consumer Design Pattern (data).
  3. Study the model and adapt it to your problem.

  The producer would be anything that generates data.  Once you have the data, you put on the queue and send to the consumer for the entire treatment.  The idea is that the producer has an inherent calendar that he must answer, otherwise you lose data points.  The consumer, on the other hand, just need to follow 'more or less' (in fact, the queue may / will develop, if the amount of data is not megabytes, so the consumer can really be quite slow, if you usually want to consumers, on average, to be at least as fast as the producer).

  Bob Schor

• HELP - a clip has been replaced by another of the same number

  Hello

  A project is opened and I was searching for clips via the media browser. I clicked open an item in the source window and somehow, it replaced the element in the project. I do not know what information I should post so that you work out what I mean.

  The original project item was Clip0009.MXF and I merge with audio separated. I created the sequence in the timeline panel and made a massive change.

  Then I went to research, via the media browser for a cut on clip I've done another day. I opened it in the source window to have a quick glance (as my recordings of the camera. MXF files so I can't view them outside of the Prime Minister as you can the .mp4 clips) the clip I opened turns the same incised number Clip0009.MXF (recorded on another day) as the main element in project management. Unfortunately this camera starts from 000 each time I format the SD card.

  Some how the cutaway clip replaced the original clip in the timeline panel and I can't seem to be able to reverse the trend. Now, my project is slowed down after working hours. Norbert here, someone has any ideas bright.

  Any ideas would be greatly appreciated!     There is no available Premier Pro consultants for help. THEY ARE CLOSED not happy Grrrrr thereon.

  Thank you!

  The screen shot below shows where the original clip was replaced by the ring in the clip of Cup. The second shot I imported the original Clip0009 with the ute Tough Dog inside to show you the original with different screen for the cutting of ute white.

  

  

  Name change does nothing for the clip. So a rename/copy-to-here right do anything else than the copy in a directory and rename the files as shown in your preset.

  Transcoding pourrait ... but then, for ease of Assembly and all some of us are sometimes transcode to a "digital intermediate" quality codec (di). Which can actually be used for anything these days.

  Like Cineform YUV which is a 10-bit codec (your media is probably only 8, so that part is a bit exaggerated side) and is quite low on compression. The files are a bit a bit bigger than the camera stand normally, the quality is excellent. And as Jim Simon, another user here, says "this codec changes like butter through the CPU".

  Or say, DNxHD/R. choose a "flavor" which is the same-size/rate your media in a form of HQ and you will have everything your heart could desire in quality. In addition, he rereads and Cineform. You can now use the MXF wrapper for them in PrPro.

  Neil

• LKM to move data from one schema to another in the same DB

  Hello

  I am new to ODI. My question is simple:

  I created a mapping to move data from a table in Figure 1 to another table in Figure 2 (the two schemas in the same Oracle DB.

  What is the best LKM Oracle for performance to use in this case? Most of the LKMs using DB link... but is it really necessary that the two schemas are in the same DB?

  Ive used SQL knowledge SQL module, but I guess it's probably slower strategy.

  Thank you!

  Vitor Moreira

  Hello

  If two phyiscal patterns are on the same database, you want a Phyiscal server with two patterns of phyiscal under this server in your topology, this way ODI will recognize that you don't need a LKM (at all) and mapping will have to IKM / CKM only.

  If ODI is to ask a LKM, looks like the two schemas to belong to their own physical server in the topology browser? In this case, it is not optimal.

  Just make sure that your user has access to two objects in diagrams and you'll be fine.

  If you really want to go Oracle DB Oracle DB then DB link or Datapump for large volumes of data, JDBC/Agent (SQL for SQL) for smaller volumes.

• Captivate 9 - text entry area - cannot navigate through the input of text boxes on the same slide using enter key (works only tab)

  I designed a slide that has 3 areas of text entry.

  I need the user to be able to type in their response to the first box and then press the ENTER key, it will pass them in the next text box. After typing in their response to the second box, press ENTER, and then have developed pass to the third area.

  I don't want to use tab, I want to go to work as a shortcut key, so this works well on all devices. It feels like a trip to the logic of the user.

  I removed the button SUBMIT and check the validate user input.

  I put the shortcut key to ENTER in propriety / Actions area

  However, after that type in an answer and pressing on enter, the focus is not moved in the input text box available at the following address on the same blade.

  This happens regardless of browser (tested Firefox, Chrome, Safari, and IE9/10) and also OS - Windows 7, Mac OSX 10.9, 10.10 and latest version of iOS

  Only the tab key works (Ive even tried with other keyboard shortcuts and it always comes back to TAB).

  I know that this feature is possible in Captivate 9. I have read and watched many tutorials online, it seems a very basic feature. I could be wrong.

  This is a feature of wholesale/known or I'm doing something wrong.

  If a bug, is there a plan to fix it soon?

  Indeed, your problem is related to the Enter key as a shortcut key, not to have multiple TEB and one absolutely validation button. Take a look at this article very old (you are not the first to ask about this):

  A submit button for multiple text entry boxes? -Captivate Blog

  But here I explained to indicate to the user click in a next TEB, do not use input.

• Have v14 PC and elements.  How do I move photos in one catalog to another on the same drive, same Organizer computer program?

  How can I move photos in a catalog to another catalog on the same hard drive?  Material: PC and organizer worm. 14

  SAM1938 wrote:

  How can I move photos in a catalog to another catalog on the same hard drive?  Material: PC and organizer worm. 14

  There is no direct way to do this in the Organizer.

  http://www.johnrellis.com/psedbtool/Photoshop-elements-FAQ.htm#_Splitting_and_rearranging

  What you can do is to import the selected files in a different catalog.

  A method is to select the files in the first catalog and move them to a new folder, and then import them.

  To keep the labels, ratings, notes, legends has use the function "write metadata in the files" before importation in the catalogue of the second.

  You can delete selected files from the catalog first then if you want (NO disk...)

• With the NI USB-6009 analog input lag

  Hello

  I try to acquire analog signals with NI USB 6009 using LabVIEW. (The signal is 50 Hz of the functional generator).

  However, the acquired singnal has dynamic splitters, which is NOT observed by my oscilloscope.

  I have no idea why this phase shift occurs.

  Any information is welcome. Thank you for reading.

  An image file will not help. Post your real VI. If Firefox does not work, use explore or Chrome to fix your VI (s)!

  You have here a Subvi, I don't see what's inside and how it is configured. In addition, this while loop is ridiculous: there is no button to stop him running. Never use the red button to abandon for a normal shutdown of a VI!

  Why you have configured NChan NSample? Measure a unique signal, Yes? For example, use 1 channel only.

  Edit: why do not you play first with an example given, delivered with LabVIEW?

  Your LabVIEW, go to the Help menu--> find--> material and output examples--> DAQmx--> entry--> and open 'Input.VI - constant tension!

  This VI allows to enjoy your analog signal.

• Windows 7 computer to connect to Airport Extreme with an external USB drive attached. Flash drive appears for the network map but not the hard drive.

  original title: drive hard extreme airport

  Using Windows 7 and the Airport Extreme.  The Airport Extreme has a USB port that can be used to mount an external hard drive which is accessible via the wireless connection.  Only thing is, I can't get a 2 GB flash drive will appear for mapping.  When I use the other hard drives, they never show upward for mapping.  They show that it is connected to the Airport Extreme, but are not seen by my PC.   The internet has a rumor according to which hard drives will show up only on a PC if they are to FAT32... which would work without another formatted hard drive.  What do you know about my problems of compatibility with hard drives?

  Hello

  Check updates firmware for the Airport Extreme.

  Airport Extreme
  http://www.Apple.com/WiFi/

  Airport - Support
  http://www.Apple.com/support/airport/

  ---------------------

  Although I think that the question is really the Airport Extreme also updates Windows 7 WiFi.
  Check with the system manufacturer and the real device manufacturer updates the driver.

  Control Panel - network - write down of the brand and the model of the Wifi - double click top - tab of the driver - write
  version - click the driver update (cannot do something that MS is far behind the pilots of certification). Then
  Right click on the Wifi device and UNINSTALL - Reboot - it will refresh the driver stack.

  Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
  http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htm

  Installation and update of drivers under Windows 7 (updated drivers manually using the methods
  below is preferred so that the latest drivers from the manufacturer of system and device manufacturers are
  found)
  http://www.SevenForums.com/tutorials/43216-installing-updating-drivers-7-a.html

  Download - SAVE - go where you put it - right click – RUN AS ADMIN.

  You can download several at once however restart after the installation of each of them.

  After watching the system manufacturer, you can check the manufacturer of the device an even newer version.
  (Those become your fonts of rescue system manufacturer).

  Repeat for network (NIC) card and is a good time to get the other updated drivers as windows
  7 love the updated drivers.

  I hope this helps.