Simulate a delayed signal

Similar Questions

• How to delay signals

  As part of a larger assignment, I did this 3 bit counter (see attachments). It should output signals in this order:
  000
  001
  010
  011
  100

  (and this should repeat endlessly). But it does not work as expected, I'm stuck.

  I think the problem is output triggers to get to folding and, given that the entry is instantly their output.

  I struggle to find an element that can delay milliseconds. Any help appreciated.

  Hello

  In Multisim, there is a component called TRANSPORT_DELAY that allows you to add a delay to your digital signals. It is in the Misc Digital Group and family TIL. Please take a look at the attached example. You can change the delay time by going to the properties of this component and on the value tab, click editing model.

  I hope this helps.

• Simulate the loop Signal splitters

  I am using a loop for the phase shift signal simulated on a 360 deg. My loop will change, amplitude, frequency, offset, but it will not change the phase, is - anyone know how I can do this? I have attached a code that indicates the fundamental problem.

  Great! I should really like to try the reset signal entry. Thank you!

• How can I programmatically set the delay of a feedback node?

  I'm generating a sine wave using the vi simulate Signal Express. I then use a feedback node to delay the signal of a specific amount. The front displays 2 charts: one of the original signal and another of the delayed signal.

  The problem is that I will determine the amount of delay based Boolean user entry rather than having to set by using the configuration box (the time will be 4000 if the user chooses "real" and 2000 if the user chooses "fake". I do this with a box structure. How can I use the delay printed by the case structure to control the delay of feedback node?

  I'm relatively new to Labview, so maybe there is a better way to reach my goal of using a Feedback node. Any ideas are appreciated!

  Take a look at this response, "Is there a period of dynamic for nodes of z comments?"

• Can I use USRP 2 channels at the same time to receive a signal?

  Hello world

  I want to do an implementation of the time difference of arrival between two receivers (antenna) estimate. I have a kit USRP, Remora and two antennas. There is only one signal source (it is transmitted in nowhere is not serious).

  Can I use two channels at the same time the USRP to receive a signal?

  I need the original source signal and the delayed signal version.

  Thanks a lot for your help.

  Sincerely yours.

  Uysal.

  Hello

  I found this post on the forum that can be useful for you.  Looks like you can not receive two antennas in the way you describe.  I think that this would require a configuration USRP two.

• Set up the device to simulate in MAX

  Hi all

  I am currently using an executable to control some hardware. The .exe has limits of security built - it reads some sensors using digital i/o - and if they are in the bad condition my operation aborts. This works perfectly if I have the system I work with properly configured. However, we are working on a second system that has the same basic material, but none of the sensors (or the card digital IO to read) mounted.

  Ideally I would cheat code the DAQ card is present and I made it through the creation of a device to simulate in MAX. However, once I stopped MAX and start my code all values of e/s digital sparkle on and outside. When I run a test panel with my already running VI that there is a resource conflict. Someone at - it an idea how I can get the DAQ card simulated to simulate a constant signal to 0 v or 5 v once MAX is closed?

  Thanks for your help,

  Dave

  You don't have to define what the mock jury will be read. If I remember, that counts just from 00 - FF for a port.

• Problem with ChnFind

  I used this function successfully elsewhere in my scripts, but for some reason that I'm having a problem here.

  Please take a look and tell me if you see the question...

  "Determine which HCM1 evolved during the triggering event and the delay signals
  
  Sun k, m, z, 1, ResultsGroup, ChangeTrue, ChangeFalse, group, result, Zero
  
  Set ResultsGroup = Data.Root.ChannelGroups.Add ("Results_Trig")
  
  Set ChangeTrue = ResultsGroup.Channels.Add ("HCM1_ChangeTrue_Trig", DataTypeString)
  
  Set ChangeFalse = ResultsGroup.Channels.Add ("HCM1_ChangeFalse_Trig", DataTypeString)
  
  result = TrigEvent - 5 ' TrigEvent in this case was 112, result = 107
  
  msgboxdisp (result) ' result = 107 confirmed with this
  For k = 05:54 ' decreased from 2 to 15 for any group of 6 for troubleshooting
  
  Set Group = Data.Root.ChannelGroups (k)
  
    M = 1 to Group.Channels.Count
  
    A = ChnFind ("Ch (Data.Root.ChannelGroups (k). Channels (m). (Name) > 0 ", result)
  
    Zero = ChnFind ("Ch (Data.Root.ChannelGroups (k). Channels (m). (Name) = 0 ", result)
  
    msgboxdisp (Data.root.ChannelGroups (k). Channels (m). Name)
  
    msgboxdisp (One) ' all channels back 0  Many must return to 112 instead. (length of the canal is 1997)
  
    msgboxdisp (Zero) ' all channels return 0.
  
    <= enddatarow="">
  
      z = ChangeTrue.Size + 1
  
      ChangeTrue (z) = Channel.Name
  
    <= enddatarow="">
  
      z = ChangeFalse.Size + 1
  
      ChangeFalse (z) = Channel.Name
  
    On the other
  
    End If
  
    Next am
  
  Next ' k

  Hi 2Pale4TX,

  I do not understand why your orders ChnFind not work at all.  You declare 'k' and 'm' with "Dim" as local variables, and then you reference them in the expression of ChnFind(), where only global variables should be accepted.  Try this instead and see what happens:

    T1 = Data.Root.ChannelGroups (k). Channels (m). GetReference (eRefTypeNameName)
  
    A = ChnFind ("Ch (T1) > 0", result)
  
    Zero = ChnFind ("Ch (T1) = 0", result)

  Brad Turpin

  Tiara Product Support Engineer

  National Instruments

• How to get digital signl in labVIEW

  Hi, I have 1 problem is how to get the digital signal in LabVIEW without using the DAQ card

  Hello

  There are several ways you can load a digital waveform file:

  Playback of the file measure Express VI

  or

  The reading file VI Wavefrom

  or

  Simulate it arbitrary Signal Express VI - use the Signal set > Load Data button.

  If this does not help, could you provide more data, also why can not use you a data acquisition card.

• Code error-61499 when you run an FPGA VI on favorable computer with e/s Siulated

  Dear Forum

  I have a problem running my FPGA VI on simulated with e/s Comupter development

  I created a test bench, as described in

  http://zone.NI.com/reference/en-XX/help/371599D-01/lvfpgaconcepts/test_bench_tutorial/

  It works very well. I can read a write i/o nodes

  But when I insert a control node of read/write (from the palette interface FPGA) in my host-VI to write a value directly to a control on my FPGA VI, I get the error-61499

  The error occurs in the VI on my Hostcomputer ad message is:

  An internal software error on the LabView FPGA Module has occurred. Please contact technical support.

  The error doesn't happen, if I remove the read/write control, or if I do not speak.

  The error does not happen, if I compile the fpga vi and let it run on my fpga hardware. It only happens in simulation mode.

  The error mode simulated when I use the test bench to simulate the input signals, she also happnes, when I use random input signals.

  It seems that the error does not occur when compiling. The slopes of simulated VI and the error occurs only when I call the read/write control.

  Can someone help me?

  I appreciate any suggestions

  Thank you

  David

  OK, the problem is solved, thanks to the support of or who helped me:

  The solution is, do not to have spaces and end of lines in the names of items frontpannel.

  In simulation mode, a host vi has problems to access the elements of the frontpannel of the fpga vi with the read/write node if the façade elements have special characters.

• PXI data transfer between OTN and FPGA

  Hello

  I have a DAQ card in my PXI and a FPGA 7813R map.

  The problem is that I send sample waaveforms of the data acquisition card to the FPGA card (which only has digital i/o) to launch my control on the FPGA. When I generate a sine wave of 50 Hz in the OTR to simulate a measured signal and send it to the FPGA through the controls in the Panel before (http://zone.ni.com/reference/en-XX/help/371599G-01/lvfpgaconcepts/pfi_data_transfer/) the signal happens on the fpga is much slower than 50 Hz indicating this folding is (it takes too much time to send the data). I tried to use this method of data transfer because my control requires only the more recent data, but it also has a phase lock loop that requires the data arriving at least resemble the original signal. Another criterion is that the control to data more up-to-date as possible. I know there is another option of the use of DMA FIFO, but I use it because I thought it would take more time to send the data, because each value must be sent.

  My questions are:

  I go about it the correct way? I know that there is the FPGA cards with analog inputs. I buy one it is because I have a large amount of differential analog inputs (20 +)

  Is there a quick way to transfer data to the FPGA. (I have converted all the FXP data before writing to the FPGA)

  Hi Jagwa,

  You should not have to synchronize the RTOS loop that written information and the FPGA VI which is read.  Instead, you can simply use a FIFO.  In RT, you can write all the data points for the FIFO, and then you can extract them one at a time on the FPGA VI and use them as needed to control functions.  In this way, the only time you need to worry about stopwatch the FPGA VI to get out the data to mimic 50 Hz.

  Kind regards

• Calculation of RMS through a rectangular window with gap of time 25%

  Any signal (for example the sinuses), I need to calculate the RMS value, with an integration time of 1 millisecond , through a rectangular window, with a gap of 25%.
  In other words, instead of calculate an RMS value by considering every 1 ms interval, I need to calculate the value of a 1 ms window, then apply a gap of time 25% (of the window) and calculate the next RMS value assuming a 1 ms interval and so on.

  For example, in a 1 ms window, there is a 75% overlay.

  I appreciate all help.

  Thank you in advance.

  Hello.

  It has been long since I last posted something.

  I managed to get what I wanted, now I need to optimize it.

  I simulate a sinusoidal signal and I get a 1 MS integration time 't' just setting the number of samples n and the "fs" sampling rate (fs = N / t <=>t = N / fs). Can I use the tool "Extract the Signal Portion" and I calculate the effective value of the part in a loop.
  Anyone know if there is a way to do the same thing without the 'extracted signal part', because this tool using too much memory if the duration of the treatment is just too long with 4 k samples and 4 M samples/second.

  Thank you.

• VI test bench

  Hello!

  I work with cRIO and I want to simulate signal sine on FPGA of entry. I read this tutorial http://zone.ni.com/devzone/cda/tut/p/id/7445 , BUD I do not understand how to simulate signal sine on my FPGA entry.

  The main problem is how to create a testing ground VI that simulate the sine signal.

  Can someone help me?

  Concerning

  Hello

  Simply add a case more to the structure of e/s point name Structure box. Now you just Analog In0, i/o read readings I/O function on fpga so fundamentally, you must also create the case for AnalogIn1, for example, where you will be the same as for AnalogIn1. Context-sensitive help for the screws in the example can help you.

  Try it, it should work.

  Rostislav Halas

• Synchronization of different DAQ devices

  Hello dear members,

  I want to order the spindle motor. He needs three analog time delay signal to the reader. With the LabView program, I generated the three delay time of signals. But I have the hardware DAQ who have only two analogue output pins. So, I decided to use two data acquisition devices so that can get three analog output ports. I'm a little worried about the synchronization between the two Renault. I will be happy if someone can help me to let the different Renault synchronization procedure.

  Thank you in advance.

  Best regards

  Azim

  Hello azeem,

  There are different ways to sync a/o on the DAQ hardware. However, it depends on what devices you use. Could you tell me what DAQ hardware you use? LabVIEW coding is not very difficult, but how you connect the hardware will be different. For example if you use two pci cards you can connect them via a RTSI cable; Use them as master and refer to the clock out of the master.

  Kind regards

  Jonathan P

• Command of RC Servo motion control/KollMorgen AKD Modbus

  I'm just learning about LabView on a project to control a RC Servo.  I have implemented a train VI with a USB-6210 pulse generator and you can control the position of the servo using a button control.  I want to be able to program the movement of the servo to follow a sine, square and triangle wave.  I tried to use the function VI generator to generate the signal but can't get the servo to move.  Someone can give me some tips on how to generate the desired waveform and use it to vary continuously the duty cycle of the pulse train?  I thought that it would just to replace the button with the function of driving control?

  My ultimate goal is to use the concept of driving a car KollMorgen AKD using Modbus to perform a similar function.

  The express VI allows you to simulate the sinusoidal signal only circulates once only 1 data point out.  In order to run continuously, you need to place inside a loop.  I don't see an interest to use a local variable for your PWM control button.  Should he wire directly to the vi "Not equal?" inside the loop.  If you try to replace the control of knowledge with the sinus generator then you must put the generator sined inside the loop and the wiring that directly to the where you have connected PWM local variable.

• Record Full Duplex and ADR Workflow in Premiere Pro CC

  Hi, I use CC v10.3.

  Trying to find best workflow for ADR only not sure if I need to do this first or hearing.

  I'm unable to mute the audio channel that I record in first that causes a signal delayed voice back to the screen. The talent is to hear the microphone input AND the delayed signal. Is there a way to re - route the output of the channel I record to so it will be no power to the monitor when recording? In Pro Tools, I just mute the channel, but when I do it in first, it will not register. I also tried to play the channel that we replace and even once, it will not record solo.

  I use a mixer with an additional bus (running the entry to 3-4 mike hand out is 1-2 Try to find a way to monitor the mic input and output channel (as if recording on a bed of music you want to listen to everything by expressing sound) without hearing the voice channel I record on.

  Any suggestions?

  The input/output audio M-Audio Profire 2626 and the mixer is a Mackie 1402-VLZ-3

  Thank you

  RG

  If you go to the Premiere Pro > Preferences > Audio and input mute during recording of timeline, Select the check box is only help?

  

  MtD