String 1 d TDMS-writing on different channels

Similar Questions

• Simultaneous use of different channels the same Module

  I use DAQ 9178 chassis to control several module, 9421, 9481, 9207, 9263 and 9213. I wonder if I can call two or more different channels of the same Module at the same time without getting an error of conciliation? For example, DAQ assistant1 use 9213 channel 1 and DAQ assistant2 use 9213 channel 2 respectively. There is a chance that the program could call these two assistants at the same time, which will cause an error? What about the other module, 9421, 9481, 9207 and 9263?

  Thank you

  Haorong

  Hi Haorang-

  If you use separate tasks (via separate DAQ Assistant) then I strongly encourage you to ensure in your code that only access comes at a time. If they are running at the same time, then one of the tasks is likely to report a resource reservation error when he tries to set aside resources that are used by the second task.

  There is no way to set a timeout for this case, as it would be dismissed by booking / committing the task (see DAQmx help for more information on the States) and not at the time of the reading or writing, so there is no way to wait for the data to be acquired or generated while the resources are released.

• EPG does not download properly don't get "no data available" on different channels?

  Original title: EPG DOWNLOADED DO not CORRECTLY GET "NO DATA AVAILABLE" on DIFFERENT CHANNELS?

  I am in the United Kingdom and using MEDIA CENTER on windows vista x 64 and I find that I have big problems getting data from TV stations. There are downloading, then others like bbc and itv that simply say "NO DATA".

  I tried to download the data multiple times and still the same result...

  ID: 5

  VERSION: 2869752824

  TNT - CRYSTAL PALACE

  ID:120020

  TV SIGNAL: DVB - T

  SCHEMA VERSION: 5

  LANGUAGE: ENGLISH

  START DATE 01/01/01 12:00:00 AM

  DATE OF 08/06/2014 END, 19:00

  Show only THE FOLLOWING STRINGS: "No. DATA AVAILABLE.

  BBC ONE

  ITV

  CHANNEL 5

  LIVE LONDON

  DRAMA

  MOVIE MIX

  ITV + 1

  QVC BEAUTY

  CREATE AND CRAFT

  ROCKS AND CO

  FOOD NETWORK

  TRAVEL CHANNEL

  GEMS TV

  CHANNEL 5 + 1

  FILM 4 + 1

  CHALLENGE

  MOVIES4MEN

  JEWELRY CHAIN

  CHANNEL 5 + 24

  QUEST + 1

  TRUE ENTERTAINMENT

  CBS REALITY

  SEE THE MAP

  POP

  BBC R1X AND OTHER VARIOUS RADIO STATIONS...

  ANY HELP WOULD BE GREAT ROGER...

  You should contact your local tv cable company reagarding this problem.

• Generation of signals to the NI PXI-6713, on different channels

  Dear community LabVIEW,

  anyone could help me please, I beg you, by the following. I want to generate sine wave using NI PXI-6713, with the same frequency of sampling, but in different times. Let's, first of all, I need to launch the generation on channel 0 and after a few seconds - start generating on channel 1, continuing to generation on channel 0 (the reason - parallel test several EHR, so steps generation EHR may occur at different time). Is this possible?

  I tried to create several task for each channel and launch the generation for each channel separately, but I got the error message "-50103: the specified resource is reserved." The operation could not be performed as indicated. ».

  This means, that I can't start build on different channels at different times, and I need just to create a task for the channels, on which the signal will be generated and start production at the same time?

  Thank you very much in advance!

  Because the device has a clock convert, you must use a single task to more than one channel.

• Graphical representation of the different channels separately

  I'm a VI design that acquires data from 3 different channels (voltage). The data from each of these channels must be converted separately (user-defined) in other quantities (say, pressure, temp and force). Am I voltage data acquisition and using the formula with coefficients powered by user to convert the data.

  However, I would like to be able to store the data of the amd chart separately. In the above procedure, the signals of all channels are under conversion. I want each channel to undergo a conversion specific and graphic and store the data for each channel separately. How can I do this? Please suggest.

  Thank you

  Dheeraj salvation,

  The order of the signal depends on the order of the DAQ chain that you configure. I think that the signal of channel (ai0) 0th will be available in the branch above the page which is the tension in your case.

  You can mark it as a solution if your problem is resolved so that others can also get help on the wire later. Do not hesitate to ask if you have more doubts.

  Kind regards

  Amine31

  (Bravo to give good answers, mark it as a Solution If your problem is resolved)

• How would you apply different calibrations on different channels

  I'm looking to apply the calibration data to multiple channels. The calibrations could be made at different times for different channels and could be using different adjustments. I think I have a solution to just apply the calibration on a channel information. I will post the solution for a path in this post. In the next post, I'll include the multi-channel problem that I'm trying. I had to add txt on the original file for this post.

  Thanks in advance.

  Hi Eric,.

  Glad you were able to get this working.  The links I sent show how to use the DAQmx driver for data scaling with custom scales which should be easier and more maintainable method to do the same thing (with the exception of not being able to use logarithmic scales).  Be sure to check out them to see if it's something you'd be interested.

  If the code you have posted just works the way you want, I see no need to make changes - you can consider using an array of clusters for organization and clean up some of the wiring.  As a minor point, the County of loop terminal must not be wired on your first loop for, since the entry is indexed auto.  Personally, I would have used the DAQmx scaling feature described in the links to my last post, but since you already working there should not be problems with using this method.  If you have any questions or specific issues come up please let us know.

  -John

• Extract strings in the tdms files and write the strings in the file txt or lvm

  Hi all

  I'm struggling to extract strings from a file of tdms to write them in a txt file.

  The strings were written in tdms is a time stamp data recorded to a compact RIO.

  I put the chain in a different group from the PDM, but when I use the function read tdms with the group name, as I said, an error message is always take place.

  Thanks for all the help.

  PS: I have attached an example of tdms file I got over here.

  Kind regards

  Yifeng

  I tried your attached file and it seems that everything goes file. I have attached the screenshot of my VI here, what do you want?

  

• How to extract a D 1 waveform data in different channels to use for calculations on a page of data in real time

  Hi all

  I am a fairly new user to Labview and am trying to create a program that: watching the entries in different modules (9213, 9217) CompactDAQ sensors check errors and then uses data from some final calculations like averaging etc.  I've set up a small piece of code that includes the main functions that I am trying to accomplish.  Now I'm rather uncomfortable with getting set up and assigned channels, then pass these data in a while loop that continuously pulls the data from these sensors.

  I have the vi calculations complete and complement the inputs of channel UI, now, I'm working on the side of data manipulation and reading things.  The waveform D 1 who comes to read function is currently divided into components I want (given String Name and Y).  He then transmit this information out of the loop via a queue which transmits to the parallel loop below that will perform the verification errors and calculations of average.  There are some things that make it difficult. I showed the 2 sensors in my example, but in the actual program, there may be up to 400 entries.  The problem is that not all of these sensors will be used on all the tests that the software is used for.  To use the entries in the VI test for example: if I'm trying to the average of these 2 entries to create a common value, but then on a test, sensor 2 is not there, it must be recognized that fact and not use it in the service average.

  So to get down to it, I want to create something that can look through the D 1 waveform data groups, determine what these values are, then perform the functions necessary for these numbers once they are identified, then pass on the calculations of VI where it displays then usable for user information.  I think I'm having a problem with the finding in sorting than what I thought at makes me think that there must be an easier way.

  If someone has encountered this?  What is my explanation of what I'm trying to make sense?  Let me know and I can clarify.

  In terms of features, I don't see anything wrong. with respect to the effectiveness we must remember some general indications. These issues that I bring to the top will not affect your code now since your stack sizes are very small but can start to create the fragmentation of memory and slow down the software if your stack sizes are much larger and the software runs for a long period of time.

  1. try not to use the table to build. Whenever you use a table built labview creates a copy in memory. Try to initilized your berries and replace subsets.

  2. as much as you can try not index tables or unbundle cluster several times. try to perform as many tasks as possbile in one shot. (what was obvious in your second loop)

  In addition, he's looking good.

  I made a few changes to your code and attached to it. I wanted to give you a different on her opinion as it relates to being able to control entry and exit of programitically, if you had a look up table. I do not have the same changes to your second loop but I can guide you through what to do if you do not want to go in that direction. Yet once your original code is well done for someone who is new to labview, so don't feel you need to follow the new design of VI. Just try to remove the table construction and multiple indexing as a good habbit programming.

• How to call a string my main method in a different class.

  Please forgive me if I do not use the correct terminology when the discussion about this, I am a novice java programmmer.

  The following code is in my main class called InjectionFix. I have another class where I need to call or to launch the channel in the code below.

  How can I achieve this. I tried to create an object of the class, but I can't do that because my other class does not contain a main method. How can I

  Download the other class to initiate the code below which is loacted in my main class.

  public static String escapeDN (String name) {}

  StringBuilder sb = new StringBuilder();

  space character or # at the beginning of a string

  If ((name.length > 0 ()) & &)

  ((name.charAt (0) == ' ') |)

  (((name.charAt (0) == ' #'))) {

  SB. Append('\\'); Add the backslash if necessary

  }

  for (int i = 0; i < name.length (); i ++) {}

  char curChar = name.charAt (i);

  Switch (curChar) {}

  case ',': / / Case 1

  SB. Append("\\,");

  break;

  case '+': / / box 2

  SB. Append("\\+");

  break;

  case ' "': / / box 3"

  SB. Append("\\\"");

  break;

  case '-': / / case 4

  SB. Append("\\\");

  break;

  case ' < ': / / case 5

  SB. Append ("\ <" "");

  break;

  case ' > ': / / case 6

  SB. Append ("->" "");

  break;

  case ';': / / case 7

  SB. Append("\\;");

  break;

  case '\n': / / case 8

  SB. Append ("\\\n");

  break;

  case '\r': / / case 9

  SB. Append ("\\\r");

  break;

  case '=': / / carton 10

  SB. Append("\\=");

  break;

  case ' / ': / / box 11

  SB. Append("\\/");

  break;

  by default:

  SB. Append (curChar);

  }

  }

  space at the end of a character string

  If ((name.length () > 1) & & (name.charAt (name.length () - 1) == "")) {}

  SB. Insert (SB.length () - 1, '-'); Add the backslash if necessary

  }

  Return sb.toString ();

  }

  The method you posted is declared static. In other words, it is accessible without an object context.

  So in your "other category" you can just write to the appropriate position:

  String escapedString = TheClassContainingThisMethod.escapeDN("the string that needs to be escaped");
  

  Good bye

  DPT

• audio input is displayed in a different channel

  I record my bass guitar to 5 of entry, but the sound appears in the 7 entry (a percussion channel mounting below with nothing plugged currently).

  Overview:

  I have 8 assembly lines for my group (3 voices, 2 gtr, 1 double bass and 2 perc ACST).  I use MOTU (828mkII + 8pre) outfit which works very well with GB and REAPER.  I actually opted for REAPER a year or two ago when I had this same problem and could not understand it.  I really want to go back to the LOGIC, if I can understand it.

  Last year, my channel voice lead stopped to see him at the entrance and rerouted it to some other channels--real weird.

  Any ideas or help certainly appreciated.

  Thank you

  Russell

  Mix-> labels I / O-> reset-> Reset all labels...

  Try this and see if it fixes it. If not can send you a screenshot

• I'm using Labview TDS3000 Tektronix pilot measures the delay between pulses on two different channels

  I use the driver for Tektronix TDS3000 Labview to configure an TDS3034B oscilloscope and I try to measure the gap between the falling edge of a pulse on channel 1 and the edge failling from an impulse on channel 2. It seems that the TDS3034 can measure this in in-house by the use of the measurement on the front panel key, but how do I retreave using your labview driver?

  Hi Tori

  I am now in place and running, I already had the TDS3034B to measure the delay between the pulse on channel 1 and the pulse on two channels, as well as the pulse width tuned to channel 2. This was done by saving the settings on the scope on a diskette and cutting and sticking them in a modified version of the TDS3000 auto setup vi. I created from a simple VI which allowed me to manually enter orders for tektronix and found that the command "measure: meas1: data? went around.

  Thanks for all your support on this issue.

• I can taste different channels at different rates in a task?

  I use a NI 9203 modules and 9215 9211 in a single CompactDAQ chassis. The software is LabVIEW 8.6.

  My VI use DAQ Assistant to sample all three modules within a single While loop. I can run the whole loop until about 13 kech. / S without problem. However, about 14 kech. / s, I get the following error:

  "Error 200361 occurred at DAQmx Read (analog 1-d Wfm NChan NSamp) .vi:3

  Possible reasons:

  Measurements: Overflow of on-board memory. Due to the limitations of system and/or the bandwidth of the bus, the driver could not read data of the device enough fast to follow the flow of the unit.

  Reduce the sampling frequency, or reduce the number of programs that your computer runs at the same time. »

  I need to sample the 9215 signals up to 20 kech. / s, but the signals emitted by the 9203 & 9211 don't need that you can enjoy at the s/s 1. could reduce the sampling rate in the 9203 & 9211 signals solve my problem? If so, how to apply these different sampling frequencies high within the same DAQ Assistant VI?

  
  

• Collage on different channels?

  Lets say I want to paste some copied audio.

  

  But when I do, it happens:

  

  It always sticks in A1. Is there a way to paste it into another channel? Some kind of setting, or a shortcut?

  Target a single track until you paste.  That is to say turn the other ff.

  Shift click here to select all / deselect all > then select target with a click. > paste

• Channel import from time to tiara from a PDM file

  I have a generated Labview tdms data file has the timestamp clock computer written in the file as a string. When I add this tdms file to the portal in DIAdem data it is important this time string channel, and I can't trace this as the x-axis data. I would like to import this time string of the tdms as a weather channel file easily. Is this possible?

  The work around I have found is to import the tdms file in excel, and then save as an excel file. I can then import this channel since the Excel using the Excel Import Wizard and specifying the time stamp column is a weather channel. Surely, there must be a better way.

  Thank you.

  Hi PRinOR,

  Here is a VBScript script that converts each text string "Time Stamp" in the data portal to a 'Time Stamp' datetime string.  You can run this VBScript manually whenever you load one of these TDMS files in the data portal, or we could implement to run automatically on your computer as an event of BROWSER loading custom.

  If you can convince the controller LV for a Brown wire entry datetime to the PDM file, then this new channel of data will appear as a column of values datetime correctly recognized in Excel, even if the display in Excel will be different from the datetime string in your TDMS file because Excel does not this default format (I think it's possible with a custom display Excel datetime type) display type.

  Brad Turpin
  Tiara Product Support Engineer
  National Instruments

• TDMS multiple channels, frequencies of different sampling

  I'm developing an application c ++ under Windows 7, which must record the sensor data acquired on the disc. The data consists of approximately 1 500 channels sampled at rates that vary between 100 samples/s and 1 sample/s with data types which could include the floating, whole, decimal point fixed and boolean. We need log on without interruption for hours at a time. In the past, my company has used LabWindows/CVI to write TDMS files for this kind of application, but the number of channels has always been much lower and all channels, we sampled at the same rate. I was instructed to use the LabWindows/CVI/PDM solution for this new effort, but I have concerns about the way in which it will occur in the conditions I described above. My questions:

  * It OR application notes dealing with best practices for recording several channels of data sampled at different rates for TDMS with LabWindows/CVI files?

  * Are there performance indicators which show the capablities and the limitations of LabWindows/CVI/PDM in conditions similar to those I describe?

  * Someone here any experience – positive or negative – with TDMS in a similar application which they can share?

  TIA

  Hugh

  I had an Exchange offline with Technical Support OR on this subject and received the following guidelines, which I consider the Gospel:

  You should be able to connect to TDMS in CVI for your strings from 1500 to different rhythms without problem provided that your computer has enough memory.  You can set up groups and with 1500 channels you should probably, in the interest of the Organization, but it is not necessary to create groups to limit the number of different sampling frequencies.  Alternatively, you can generate different files to separate data, which are also recommended, but not necssary, based on your preference for the organization rather than the need for the maintenance of sampling together in the same file.  TDMS supports asynchronous writing, so you should be able to connect different channels at different rates for the same file without errors in access to the files or something like that.   One thing, you might encounter is slowing a lot of simultaneous writing.  I found this example of community which shows how to write data to disk faster using the advanced TDMS API.  Please visit the following link: LabWindows/CVI Tip: write data to the disk faster with TDMS Advanced API https://decibel.ni.com/content/docs/DOC-33401