Similar Questions

• NEITHER 9234 with quasi static analog voltage

  Hello

  I have a NI 9234 (4 channels + / IEPE 24-bit 5V) attached to a chassis cRIO module. This module is ideal for accelerometers and microphones where the tension is in constant evolution (ie; measures of variation rates).

  I also have a module OR 9237 (4 channels 24-bit full-bridge module analog input) attached to the same cRIO. This module is ideal for measure variable voltages of strain gauges (quasi static and dynamic loads).

  The attached graph shows the two channels, collected synchronously, but as you can see the (red trace) cell breaks down (as it should), but then drifts back to zero on its own, when in fact it should remain low just like the extensometer is beam. After all, the two sensors are physically secured.

  Q1: Would that have something to do with AC/DC module 9234 internal coupling?

  Q2: Is it really possible to collect "quasi static" ongoing tensions by using a NI 9234 module?

  No explanation as to why this occurs, or if there is a way to remedy this would be appreciated.

  Kind regards

  Andreas

  Coupling AC/DC must do a lot with your question. In mode AC voltages static will be fitered outside and the 9234 measure indeed only change voltages. In DC mode, the voltage goes directly to the AD converter and you can also detect static tensions.

  A minute of Googling gave me the answer, this load cell electric piezo can measure dynamic changes, as any charge will escape the path the lowest resistance and the signal will go to zero after a certain time. I guess the other device you were using higher internal resistance (which is relatively low on the 9234), so it takes more time to what he flees, but he also took on the picture you attached your second try.

  Here you can find more example under the title

  "WHY ONLY DYNAMIC FORCE CAN BE MEASURED WITH SENSORS OF POWER PIEZOELECTRIC"

  http://www.PCB.com/techsupport/tech_force

  Andreas Jost

  Technical sales engineer

  National Instruments

• NEITHER 9234 Channel Config

  I have a NI 9234 inside a cDAQ, and I was wondering:

  Can I configure each channel individually, while measuring the two at the same time?

  I want to have the excitement of 2mA enabled on a channel, but not the other I read / compares the two signals simultaneously.

  So far, I have to choose Toggle both on a property node, and not what I need.

  Thank you

  Billy Murphy

  I thought I'd share this email, I just returned from a very helpful employee at NOR :-)

  -Billy

  William,

  You can of course! Please take a look at this article:

  http://digital.NI.com/public.nsf/allkb/3AD6CCE935192B4086256F6B0079CB1F?OpenDocument

  The last paragraph is the most relevant: If you want to have different settings on each channel used, the best thing to do is to create a channel DAQmx of different types of measurement for each of your different settings. These different channels DAQmx can always be used within a single task DAQmx. For example, if you have three starters of micro and single voltage, you can create a type of measurement microphone and a type of tension using the DAQmx create channel VI. The channel will be associated with three physical channels while channel voltage will be associated with one. Voltage channel can have different settings, factors, coupling, the fat and IEPE properties compared to the microphone channel.

  Concerning

  Katie Maddox

  Technical sales engineer

  National Instruments

  http://www.NI.com/support

• NEITHER 9234 fifo dma file samples

  Hello

  I have a problem when sampling using the cRIO and map AI NI 9234, currently configured to sample a signal of Hz 1 k of the side signal generator FPGA goes directly to the DMA which is (1023 elements in size) on the side of the host (size of the element 1 million). With the help of the producer, architecture of consumption and saving on PDM on the consumer side. The producer has read dma fifo. Please see pictures any help would be great!

  If I plot the data, I get this:

  

  Here is my code FPGA:

  

  Here is my version of the host:

  

  Hello

  The problem has been resolved on this post.

  Thank you

• 8640A Kistler and NEITHER 9234

  I have probably a very simple question.

  Is it possible to perform the Kistler PiezoBeam accelerometer 8640A 5 http://www.kistler.com/mediaaccess/8640A_BP__000-842d-03.11.pdf

  to the NI 9234.

  If not, what materials would you use to operate up to 16 8640A 5?

  Thank you!

  You can and would also be able to use TEDS

  http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/208802

• NEITHER 9234: sampling rate: cRIO, FPGA

  For the NI 9234 module, before Panel block diagram of my my cRIO FPGA code is as below.

  The sampling rate (speed) is selectable between certain values as shown below.

  You have an idea how I can do the sample with a lower rate that is smaller than the option of character (1.652 ksps / s)?

  

  

  

  Hi Cashany,

  Take a look at this link. Page 16 describes the limitation that you run in. The main time base are divided essentially only toward down to some data because of the way the camera rates physically handles analog and digital filitering. So it's not really a way to divide the beyond that point.

• Configuration of the basic Source of time to master for the 9234

  I have several cDAQ modules I use to collect data.  I use vi to Write can Express to save data to a file of PDM.

  When you examine the recorded data files, the measured data from NI 9215 provide pleasant timestamps to match how the DAQmx task has been set up--delaying the sampling frequency of 1000 with a 1 ms in the While loop.  However, although in the same vi - different tasks, but the same while loop - horodateurs of the NI 9234 do not correspond to the task of DAQmx implemented - sampling frequency of 1000 with a 1ms delay. After reading the material provided with the NI 9234, I found that maybe the machine clean master Timebase Source. There were documents that says he can be configured to be originally of Timebase of Master for the other modules:

  Configuration of the basic Source of time of the master for the NI 9234 (Interface FPGA)

  It is desirable to have the timestamps for data measured across all modules to match. We do not have the FPGA Module for LabVIEW. Is there a method in LabVIEW for all modules use the same master time base Source?  I assumed that because all the data collection has place in the same while loop by using the time delay of 1 ms it was forced through the code. This hypothesis seems incorrect from my review of the PDM data files.

  The NI 9204 provides a trigger only.

  Software:

  Windows 7

  LabVIEW 2010 SP1

  Material:

  CDAQ-9174 chassis

  Slot 1: NEITHER 9204

  Slot 2: NEITHER 9215

  Slot 3: NEITHER 9234

  Slot 4; Vacuum

  Hi MgDAQ,

  An important concept to note is that the 9234 uses a delta-sigma converter and a clock of oversampling to read analog data. There is an inherent delay of entry due to analog and digital filtering built-in. Since the 9215 has a lower resolution there will be a lag the 9234 and 9215 finished. I've included some resources below:

  What are the for the NI 9233, NI 9234, and NI 9237 valid sampling rates? : http://digital.ni.com/public.nsf/allkb/593CC07F76B1405A862570DE005F6836?OpenDocument

  
  

  Synchronization of DSA, S and X series devices with a NEITHER-DAQmx single task series: http://digital.ni.com/public.nsf/websearch/78E44565FD87E7D686257108007F94F8?OpenDocument

  
  

  Synchronization with NOR-DAQmx of acquiring dynamic signals (DSA) products:http://digital.ni.com/public.nsf/allkb/A133ED27DF9BCC5986256F2E004BA342?OpenDocument

  Have you tried to put two modules in the same spot? Alternatively, you can export the sample clock 9234 and tasks installation separately.

  Best,

  CARISA

• compactRio 9074 y or 9234

  Hola, estoy instalando compactRio 9074, pero al momento estoy tried el or 9234 not me appears peripheral opcion en the MAX pantalla como.

  No to TR is instalar has make solo o con is inserta in el compactRio, igual al initiates would call desde labview pero me marca DEVICE NO

  Hola Sisi.

  Help to you recommend concerned el LabVIEW example > find examples... NEITHER 9234 get started Scan Mode.

  Este proyecto are you crea UN VI en RT para medir acelerometros...

  Lo puedes con este combine examplepara el datos guardado

  Sea util you espero

  Saludos

• Impossible to read 4 channels with the or 9234

  Hey, I'm tasting 4 simultaneous channels to 51.2 kech / s rate for each channel with the NI 9234 module.
  I use a callback function to read from the buffer.
  I am accept to get to playback 4 channels of 51.2 k * 4 = 204.8 k s/s.
  and I still recive data 51.2 kech / s.

  Need help, I don't know what's wrong with my code.

  I enclose my hope of code it will help...

  Thank you!

  My installation information:
  Material: NEITHER 9234
  Version of Windows: XP
  Language: Qt (C++)

  Hey simon27,

  When you have installed DAQmx, did you also install text code support? There are several examples that should have installed with DAQmx which is very helpful in getting you started. "" "" "They can be found by going to your Start menu, then all programs" National Instruments "NOR-DAQ" NOR-DAQ "support textual Code ' ANSI C examples.

  In case you do not installed the supported text based code, I have attached two examples which I think would be more useful to you. Try to run these examples and see if you get the same errors.

  -Nathan H

• Could not open the PDM file

  Hi, I'm using TDMS format for my project.

  I succedd to connect all the data into TDMS files using the

  DAQmxConfigureLogging(taskHandle, logFile.toAscii().constData() ,DAQmx_Val_LogAndRead,"GroupName",DAQmx_Val_OpenOrCreate)
  

  Now my problem is that when I'm reading the TDMS file I can't open it.

  My reading code is (from the example of TDMStesing):

       unsigned int
  
          length;
          int     ddcError = 0;
          DDCFileHandle   file = 0;
          char            *property = 0;
  
          // Read file name
  
          ddcChk (DDC_OpenFileEx (FILE_PATH, "TDMS", 1, &file));
          ddcChk (DDC_GetFileStringPropertyLength (file, DDC_FILE_NAME, &length));
          nullChk (property = (char*)malloc (length + 1));
          ddcChk (DDC_GetFileProperty (file, DDC_FILE_NAME, property, length + 1));
  
          printf ("File name property: %s\n", property);
          free (property);
          property = 0;
  
          // Read file description, if present
          if (DDC_GetFileStringPropertyLength (file, DDC_FILE_DESCRIPTION, &length) >= 0)
                  {
                  nullChk (property = (char*)malloc (length + 1));
                  ddcChk (DDC_GetFileProperty (file, DDC_FILE_DESCRIPTION, property, length + 1));
  
                  printf ("File description property: %s\n", property);
                  free (property);
                  property = 0;
                  }
  
          // Read the channel groups
          ddcChk (ReadGroups (file));
  
  Error:
          if (property)
                  free (property);
          if (file)
                  DDC_CloseFile (file);
          return ddcError;
  

  When I debug the code I got the error code of-6204 to the DDC_OpenFileEx function

  Error details http://zone.ni.com/reference/en-XX/help/370051K-01/cvi/cvidiademlibraryerrors/

  -6204

  DDC_UnexpectedError

  An unexpected error has occurred in the library.

  Need help...

  My configuration:

  Material: NEITHER 9234
  NOR-Daqmx: device driver 9.4.0f5
  Version of Windows: XP (sp3)
  Language: Qt (C++)

  
  

• Registration of the analog inputs in continuous (Clipping)

  Material:

  (1) USB NI CDaq-9174 chassis

  (2) NEITHER 9234 Analog Input Modules

  (1) digital input module 9402 OR

  Goal/Requirements:

  To read the analog inputs continuous only in digital input is "high".

  Problem:

  Timestamp in log file prooves that logging is not continuous. It seems that the first seconds of 0.6 of every second is recording, I guess the other 0.4 is used to write custom? I can't use VI SignalExpress for this application because logging must be triggered by a high digital input.

  File is attached. Thank you all!

  To detect changes in the digital input, you need to compare the current value to the previous. The easiest way to do this is to plug the output of digital playback on a shift register. The Boolean function involves will tell you when a transition has taken place.  See the central part of the image below. If you exchange the true and the false case of case structures, you not the inversion function.  Look at the help file for more information on what the function actually implies.

  You must also change the wiring of the name of input for writing custom file FIle.vi so that the name is automaticlly changed.  Depending on what you want the naming system to be, that it can be simple or rather complicated.

  Lynn

  

• could not discover chassis 9075 - I can't see my NI 9234; NEITHER 9227; NEITHER 9263

  Hello

  I am trying to build my first program using cRIO 9075 with three modules in the series c NI 9234; NEITHER 9227 and NI 9263.

  I use to work with NEITHER cDAQ, no problem.

  This is the first time that I face such a problem, I can not follow the start-up of maula or any tutorial.

  I stop at the part where all the FPGA does not apperar under my cRIO in Windows Explorer.

  I installed NOR-RIO, which was delivered with the hardware device drivers.

  Any tips?

  Any Solution?

  Please answer.

  Either way, I use Windows 10 and alptop Fujitsu

  Attached is a screenshot of the error

  
  

• Sync module NI 9205 with NOR-9234

  Hello

  I have a cDAQ-9178 chassis with 4 x accelerometers IEPE PCB 16 absorbent of NOR-9234 (DSA). I have a NOR-9205 I intend to use to acquire the power of 4 problems. The NI - 9234 s are synchronized through their extensions in a single task. I would add the NOR-9205 to the chassis and synchronize it with the NOR - 9234 s. I have the following questions:

  1. Calendar synchronization

  How to properly START and the NOR-9205 CLOCK synchronization with the NOR - 9234 s? PXI I export the master St DSA. WHICH device (OR-9234 or NOR-9205) should export WHICH signals to WHOM?

  2. even or parallel task

  Since I produce a TDMS file in its task of NOR - 9234, it would be nice if I could simply to ADD the OR-9205 to this task to develop this unique TDMS with extra 4 channels of the NOR-9205 file. Is this possible?

  Thanks in advance,

  Hi golubovski,

  > Are you saying my task of canal expansion can fire them OR - s and NEITHER-9205 9234 with its 32 channels of multuplexed HAVE? How to recognize which modules can be combined in this way convinient?

  Yes. With the cDAQ-9178, any set of AI modules can be included in the same task and in most cases that apply to the AO and DIO as well, but you cannot mix a, AO and DIO in the same spot. The NOR cDAQ-917 x manual goes into more details on what combinations of modules, the types of channels and the tasks are possible.

  > I am aware since I worked so far with the PXI - 4472 DSAS. How well can correlate between the NI 9234 - and the NI9205?

  Well, I wanted to make sure that you did not know that it is something that you'll probably need to take into account. On the top of my head, I don't know the answer to this question.

  > As far as I know, in which case I use dummy DAQ with the NOR - 9234 to offset 40 clock cycles I guess I'll need to separate the tasks - how to integrate viewers into a single stream of TDMS?

  If you use two separate tasks and you are using the built-in support of DAQmx for TDMS logging, then you will get flow TDMS separated for each task. Note that a dummy read will still record to the PDM file, then maybe it will not work in your case.

  If you use the TDMS API to write to the PDM file, you can do the preliminary processing of data before it is written in a single stream, but there is some trade-off between ease of use and efficiency: either you write data point floating in the file (easier but less effective), or you have to deal with scaling (most effective raw data (, but harder to do).

  Another approach is to put all the modules in the same task and compensate for the delay of the filter after reading the data from the PDM file.

  > Also, for fixed 3.2 µs I have to calculate how many cycles given the actual sampling frequency or is there another method?

  If you filter delay compensation by removing a whole number of data samples, then Yes. However, there are other methods of data processing that can compensate for a number that is not part of the sample clock periods. I don't have a recommendation, but maybe someone else does?

  Brad

• As I installed Sierra, my Trusteer account to my Bank quit and does not work when I reinstall. Neither will Quickbooks!

  As I installed Sierra, my Trusteer account to my Bank quit and does not work when I reinstall. Neither will Quickbooks! Help!

  Trusteer (report) has caused a lot of problems Mac users such noted search Apple Support communities here.

• IPhone 6 IOS 9.3.1 does not ring when a call comes, neither text does not sound a notification.

  IPhone 6 IOS 9.3.1 does not ring when a call comes, neither text does not sound a notification.

  Have you checked the obvious things? E.g.Ring/Silent switch on the left side is not on? Control the volume of ringtone under settings/sounds?

  If they are not serious then have you tried power the phone off and on again? Other sounds work fine, or if all sounds are dumb? for example can play you music through the speaker?