Limits of parameter function on channels?

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• Lack of external function DAQ channel read

  Hello

  I did a few installers to share on the network variables, one is based at DAQmx readings of analog channels use modules of simulations and the second donkey receives variables shared these radings... I thought it was pretty good, because I have the main application (channels read and share variables) in my main PC (which has istalled LabVIEW 2012) and the other track in a regular PC (no software OR installed until my Installer Act) and it worked fine. However, I installed the main application in the regular PC and I got an error stating: lack of external function DAQmx read single sample DLB... I guess I should include in my Installer features on DAQmx but I Don t know which ones to avoid this error and be able to install my apps in any PC... Thanks I await your advice!

  Well, I found the solution...

  I've just included confiuration NI DAQmx MAX support to my app Installer and I solved the problem...

• Saving channels selected as .tdm

  I have a set of data from 1300 channels.  It is saved in a file .tdm.  I try to use the function "save the channels selected in the data portal" to save a new set of data (like a .tdm) which includes only some of the 1300 channels.  When I try to register, I get an error message "error message from the command kernel DIAdem: the channel list can have only a maximum of 255 characters.»  "Order: DataFileSaveSel (FileDlgFileName, FileDlgFilter, DataCheckChnls).

  Am I exceeding a limit to tiara, or I just need to change some parameter of handling data?

  Hello SSHRC Tstr,

  It seems that this problem has been fixed in DIAdem 10.1 or 10.2 tiara there is no way to solve this problem in 10.0.

  But (there is usually one "but", right?), the following workaround solution should help you solve this problem in DIAdem 10.0:

  1 copy all the channels that you want to put into a single group in the data portal

  2. in the BROWSER, click on the tab 'List' to switch to the display of the list of the channels (rather than the 'Structure' view function)

  3. right click on a channel and select the item of menu popup "new channel numbers.

  You
  should now be able to return to the display of 'Structure', select all the
  you want to save and make the channels. The 'trick' here is that the
  channels need to have consecutive channel numbers, which reach us by
  by using the function "New Channel Numbers".

  If you have a
  chance, take a look at version 11 of DIAdem
  (http://zone.ni.com/devzone/cda/tut/p/id/5563), he has really nice
  new features that could make your life a little easier...

• NiDAQmx limits the maximum number of analog samples which can be read / buffer?

  I try all the time on a USB-6363 to 1000 Hz 2 channels analog samples.  Everything works until I have started to increase the number of samples to read only once in DAQmxReadAnalogF64().

  I have set up the buffer in DAQmxCfgSampClkTiming() like twice the amount of samples, I want to read at some point.

  Up to about 8000 samples (128 000 bytes: sizeof (double) x 8000 x 2ch) it works and read call returns without delay once all about 8 seconds.  Increasing the number of samples other than that, I can no longer read the data (the DAQmxReadAnalogF64() always holler times).

  Question: am I running in a limit on the maximum number of samples that can be read or buffered... maybe a DMA limit any?  What determines how big you can make the buffer in DAQmxCfgSampClkTiming()?

  Maybe it's not obvious, according to the documentation, but if you look at the output value of the parameter samples per channel function DAQmxReadAnalogF64 reading, you'll see that when it times out, he reads what was available when it has expired. So if you're always calling this function, and your timeout value is too short, then you'll always be timeout, but you will always catch all samples. You can view this as the function will return when the buffer is full, or the timeout is reached. That's why we have provided an exit indicating the number of samples read.

  As a general rule, ask not read like this with DAQmx. I would recommend registering a callback for EveryNSamples (there is an example that's bundled with the CVI on how to do this), or by specifying a longer period than what it will take to gather real that many samples (in your case, 8000 samples at 1 kHz would be > 8 seconds). The main problem with the polling stations with a short time-out is that you should ignore errors that is not recommended.

• Dell Inspiron 15R - limited on wifi connectivity

  Hello

  I have recently moved apartments and, using the same modem and router (router dlink DIR - 865L) I am experiencing 'limited connectivity' when I connect. Same SSID, the same password.

  the router configuration:

  Wireless broadband:band 2.4 GHz
  Enable wireless: always
  Wireless network name: (also called SSID)
  802.11 mode: 802. 11B only 802.11 g only 802.11n only mixed 802.11 g and 802. mixed 11b 802.11n and 802.11 g mixed 802.11n, 802.11 g and 802. 11 b
  Activate the automatic channel scan:
  Wireless Channel: 2.412 GHz - 1 GHz 2,417 - 2 GHz 2,422 CH CH - CH 3 2,427 GHz - 4 GHz 2,432 CH - CH 5 GHz - CH 2,437 6 2,442 GHz - CH 7 2,447 GHz - CH 8 2,452 GHz - CH 9 GHz - CH 10 2,457 2,462 GHz - CH 11 2,467 GHz - CH 12 2,472 GHz - CH 13
  Transmission rate: best (automatic) (Mbit/s)
  Channel width: 20 MHz 20/40 MHz (Auto)
  The visibility state: Invisible Visible
  WPA-Personal
  The WPA mode: Auto
  no idea why this problem occurs. the limited connectivity problem occurs like 90% of the time. Sometimes I connected successfully and the connection is good, but just using it, he suddenly falls and turns into limited connectivity.
  first assignment in time. appreciate the help

  mw96910,

  I would not use the function of channel auto. Some adapters work best on channels 1, 6 or 11. I prefer to channel 11. Try to use the recommended wireless router settings , but change the SSID to a new SSID to make the connection easier.

  Rick

• Limits of the skeleton L

  Hello

  I'm stumbling on the limits of the function of the skeleton, and IMHO, they are about size.

  Suppose I'm workign with a large image... 2048 * something.
  What I get from the skeleton L-function is

  

  (I know, skeleton lines are barely visible. What matters is the "block in the Middle"... aka skeleton function overflows)

  It's the same operation to the size of the image 600 * 355px (which isn't important in my humble OPINION)

  

  Only with a frame size of 230 x 160 or more, I'm getting a "real results".

  

  I'm not really happy with this behavior and lose a LOT of details here.

  I have two suspicions:
  one) somewhere, the data is stored in a U8...
  (b) IMAQ skeleton is probably derived from the thinning skeletonized, which in turn is probably based on the morphology of the IMAQ. IMAQ morphology begins to be unreliable after a 100 iterations of magic...

  Did someone of NO can give more information? I'll probably have to re - implement the whole thing... but I would like to at least know where / IF I can trust this algorithm to a certain particle size.

  Thank you
  B

  Just for anyone who actually search for the topic: I finished my own algorithm of skeleton. It works, there is no size limitation (beyond distances U16 ) and 84 x (upon my request) is as fast as the NOR one.

  https://decibel.NI.com/content/blogs/BP/2016/10/04/skeletons-in-NI-vision-or-lets-do-something-nicer

• Is the HP OfficeJet 7410 all-in-one ethernet ability limited to IPv4, or does it include IPv6?

  A new replacement of the router has been installed and I suspect that fast OEM install by default to IPv6, so I may need to break the detailed installation tips to see how to some device limited IPv4 parameter for this ancient printer.  TIA!

  I'm sure that its IPv4 only.  You can just disable IPv6 on your router, you really don't need it for your local network.

• Numberic channel using Dict.Add text conversion

  I have several channels that have a text value for them and I used a Dict.add function to change the values of a number so it can be traced linearly.  However, I had to create a separate for each channel in the set data function.  I want to generalize it more so it will come out and watch an all channels and compare the values of the dictionary already created.  I have attached a sample form of how I currently do not change and I played with a new form called TxtToNum.vbs which is more widespread.  I have 6 dictionary that I use in total as well so who plays in the task.   I do a lot of work of script and could really use it little assistance.

  Thanks - J

  The following should do what you want:

  '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
  
  ' Digital channel text
  
  '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
  
  If programrevision then > 1129
  
    Channel Dim, State, Dict3, t, TXT1
  
      IF Data.Root.ChannelGroups (1). Channels.Count > 0 THEN
  
        FOR each channel in Data.Root.ChannelGroups (1). Channels
  
  IF Trim (UCase (Channel.Properties("DisplayType"). (Value)) = 'TEXT' THEN
  
          Call ConvertTxtToNum (Channel)
  
          Call ValChn (Channel)
  
          END IF
  NEXT "channel
  
      END IF ' Any channels at all
  
  END IF ' Version of program
  Function ConvertTxtToNum (Channel)
  Call Channel.ChannelGroup.Activate
  
    for t = 1 to Channel.Size
  
    IF Dict3.Exists (ChT (t, Channel.Name)) THEN               ' compares the value in the value chain in the dictionary
  
    ChT (t, Channel.Name) = Dict3.Item (ChT (t, Channel.Name))   ' changes the key of the element in the dictionary
  
    On the other
  
      ChT (t, Channel.Name) = '0 '.
  
    end if  ' dict3
  
    next
  End Function ' ConvertTxtToNum()
  Function  ValChn (oChannel)
  
    Dim   sgCmd
  
    Dim   ChnNumber: ChnNumber = oChannel.Properties ("number"). Value
  
    sgCmd = 'ch(""#1"") = Val (ch(""#1"")).
  
    sgCmd = Replace (sgCmd, "#1", oChannel.GetReference (eRefTypeIndexName))
  
    Calculate (sgCmd)
  
  End Function
  
  

• Displays the absolute time of a waveform channel

  Hello

  I would like to display the absolute timestamps on the x axis of a 2D graph in the DISPLAY of the waveform channels in a PDM file. The timestamp of the first sample is stored in the wf_start_time property.

  I found this article , but I don't want to generate a weather channel because the benefit of waveforms is to avoid storing the part x of the signal in the files.

  Is there another solution since 2007?

  I use DIAdem 2011 and LV 2011.

  Thanks in advance

  Hi Yohanna,

  The only way to display the datetime values on the x-axis of the graph in SIGHT and the only standard way to do the graphics in the REPORT, is to create a DateTime String.  DIAdem in 2011 it is much easier to do, since you can use the standard ANALYSIS function "Generate digital channel", by selecting the option buttons 'values of x-part of a waveform channel' and 'Create channel time (with absolute time reference).  You can also use the standard ANALYSIS function "digital channels <==>waveform.

  Brad Turpin

  Tiara Product Support Engineer

  National Instruments

• change of scale of a channel running from the DAQmxSetScaleAttribute task

  Hi all

  simple system configuration: AI channel is configured using OR max and also using a scale that is configured in NI Max.

  Once the system is running, the task of the program started and playback of data acquisition, everything's fine. now I want to do is get the value of a string and reading that the DAQmx reads on the channel by chaning the ordinate at the origin of the linear scale at zero. I tried to get the y-intercept value and the actual value of the existing interception and defining the DAQmxSetScaleAttribute with the new linear value and nothing changes on the sudtracting channel. Possible solutions, I tried shutting down and restarting the task but not clearing and reloading of the task.

  I also tried DAQmxSaveScale, but the value in NImax for interception does not change either.

  is it somehting in the order of calls which must happen, or I can even change the scale on a task without compensation or recharge it the task?

  OK, that's how I got it working again noted that the system is configured using NImax and all the channels to HAVE are in a single task, also an important feature is that I use the DAQmxRegisterEveryNSamplesEvent function. each channel also has its own scale.

  First you need to find is the next shift, you need to recalcualte the max and min to the beach of this channel and save everthing.

  DAQmxGetScaleAttribute ("1Dist", DAQmx_Scale_Lin_YIntercept, & readOffset);  \\get the existing scale value
  stopDAQ();
  GetCtrlAttribute (panelManual, MANUAL_1POS, ATTR_CTRL_VAL, & actualReading);   \\reading off the coast of data acquisition
  newOffset = (actualReading + readOffset) *-1;                                                                     offset \\calcualte
  ERR is DAQmxGetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Max, & max, NULL);.   cahnnel \\get NIMAX Info
  ERR is DAQmxGetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Min, & min, NULL);.      cahnnel \\get NIMAX Info
  newMax = max + newOffset;
  Max = newMax;                  ------It will be ediedited what I did was made max an int to get rid of the decimal points
  newMin = min + newOffset;
  min = newMin;                   ------It will be ediedited what I did was made max an int to get rid of the decimal points
              
  DAQmxClearTask (gDAQTaskHandleAI);                                 \\clear the task due to the attached DAQmxRegisterEveryNSamplesEvent will thow errors because it is attached to the task
  DAQmxLoadTask (DAQMX_TASK_TITLE_AI & gDAQTaskHandleAI);
              
  ERR = DAQmxSetScaleAttribute ("1_Act_Ext_Dist", DAQmx_Scale_Lin_YIntercept, newOffset);
  ERR = DAQmxSaveScale ("1_Act_Ext_Dist", "1_Act_Ext_Dist", "", DAQmx_Val_Save_Overwrite |) DAQmx_Val_Save_AllowInteractiveEditing | DAQmx_Val_Save_AllowInteractiveDeletion);
  ERR = DAQmxSetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Max, max, NULL);
  ERR = DAQmxSetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Min, min, NULL);
          
  ERR = DAQmxSaveTask (gDAQTaskHandleAI, DAQMX_TASK_TITLE_AI, ' ',)
  DAQmx_Val_Save_Overwrite | DAQmx_Val_Save_AllowInteractiveEditing | DAQmx_Val_Save_AllowInteractiveDeletion);
  DAQmxClearTask (gDAQTaskHandleAI);
  DAQmxLoadTask (DAQMX_TASK_TITLE_AI & gDAQTaskHandleAI);
  GetCtrlAttribute (panelDAQ, DAQ_PANEL_SampPerChannel, ATTR_CTRL_VAL, & sampsPerChan);

  DAQmxRegisterEveryNSamplesEvent(gDAQTaskHandleAI,DAQmx_Val_Acquired_Into_Buffer,sampsPerChan,0,EveryNSamplesCallback,);

  startDAQ();

• Add channels NoValues

  Normal 0 false false false MicrosoftInternetExplorer4 / * Style Definitions * / table. MsoNormalTable {mso-style-name: "Table Normal" "; mso-knew-rowband-size: 0; mso-knew-colband-size: 0; mso-style - noshow:yes; mso-style-parent:" ";" mso-padding-alt: 0 cm 0 cm 5.4pt 5.4pt; mso-para-margin: 0 cm; mso-para-margin-bottom: .0001pt; mso-pagination: widow-orphan; do-size: 10.0pt; do-family: "Times New Roman"; mso-ansi-language: #0400; mso-fareast-language: #0400; mso-bidi-language: #0400 ;} "}

  I'm trying to analyze some of the data that have been collected by 2 devices. The data have breaks inside and values aren't monotic. I generated a new timeline and ChnMapLinCalc to map the data monotic more on my new calendar. This has produced three channels, each with NoValues but with data at the right time. When I use ChnAdd to add these channels I have all NoValues like NoValues + data = NoValues. How can I add these together as if there was no NoValues?

  Hello Roger,.

  It seems that "Process NoValues" in the DIAdem ANALYSIS service to help you.

  Set up the ANALYSIS Panel, select 'functions of channel' and the last function it is called "NoValues process".

  The 'Replace' option is the one you want. Just replace the NoValues with '0' and you should be good to go for your calculation.

  Let me know if this helped,

• Recommendations for hardware OR with a minimum 6-channel analog output

  Hello world.

  Currently I have the NOR-device, USB-6009. However, it offers only up to 2 analog output channels. I'll need to have at least 6 channels of analog output. Therefore, can anyone recommend me any device OR that matches my needs (preference is the USB series)?

  Kind regards

  Jonathan

  Did you go to the page data acquisition . You can use the different selection tools to narrow down your choices. Given that you have provided only a single parameter (number of channels), it is difficult to recommend anything. Determine what else you need (sample rate, voltage range, etc.) and you can call your sales engineer OR local and get all the help you need.

• Select multiple channels for a single task - control and shift keys do not work

  Hello

  Following the advice of several other positions, I try to choose several physical channels in the drop-down list so that I can then use the function "unflatten channel channel" later. It seems that if I hold this key is pressed or cntrl, I should be able to select multiple channels in the list, however, this does not work for me. I tried to go in the "navigation key" property for the control channel to task, but there not all listed associations. Someone else has encountered this and found a solution?  I previously around that by declaring several channels by a colon (for example, ai1:3), but it does not work for the unflatten function.

  Thank you

  Claire.

  If I understand correctly, I think that you need to do is use a task property DAQmx. Try to use the channels property to get an array of strings.

• Windows Live Photo Gallery - how to increase the limit of tag 1010 people on the search function

  The search function in Windows Live Photo Gallery people tags seems to be an arbitrary limit of 1010 different tags (1000 in the alphabetical list + the 'Top 10'). Is there a way to get around this?

  When I used the Vista Photo Gallery and my tags 'people' were just a subset of 'descriptive' tags that I created, I could find just a name on the left panel. Not sure why it isn't a section he tags in the version of Windows Live people. If you put arbitrary limitations on the functionality of Visual search 'whizz bang', it would be nice if there was a relief when it does not work.
  Is return to the starting point - maybe somewhere where the limit is stored in the registry and it can be increased or an another workaround?

  There is a forum for Windows Live products. Since your questions deal specifically with the Windows Live Photo Gallery witith, please repost in the following forum. You can also search any suggestions or solutions.

  http://windowslivehelp.com/product.aspx?ProductID=20

  Sincerely,

  Marilyn

• MDS configuration for port channel

  I tried to put in place the new download FC port channel to a pair of 9124 s MDS, but as I don't know enough on the side MDS, I can't the link to come. Are there references available anywhere say you blow by blow exactly how to set up the side MDS of the channel of the port? Or maybe an example of configuration work?

  Thank you

  I don't think it's possible to configure the fabric of interconnections, FC switch mode that only VAN is based on those. The only mode of switch that is taken in charge and possible to configure is the local network Ethernet switching mode.

  I have configured the week last on a pair of 9124 s MDS and needed to activate the F port trunking and channeling Protocol feature by using this command

  "feature fport-channel-trunk.

  After that, I had to run SAN Port Channeling. Here's a snipit of my configuration:

  npiv functionality
  fport-channel-trunk feature

  interface port-channel 11
  active channel mode
  rate switchport dedicated mode

  interface fc1/1
  port-license purchase
  Channel-Group 11
  no downtime

  interface fc1/2
  port-license purchase
  Channel-Group 11
  no downtime