Addition of delay in Signal

Similar Questions

• Addition of delay and pause to a connection string

  After the 10-digit dialing how do insert you a pause or delay adding subsequent numbers - for use on access to voicemail and other accounts requiring a login, password, etc.

  Break is a comma, the expectation is a semicolon.

• Simulate a delayed signal

  Hello everyone.

  I have this problem: I do a simulation of the propagation of the signal between a Tx and a Rx, but I need to simulate the delay between the two points. The signal I want to delay is QPSK modulated with the modulation toolkit. The point is to show the original signal from T0 = 0 s, including the delay (same signal but with T0 = delay time in seconds any value).

  Thank you

  David

  That tal Falastiny,

  Sin problema pudieras explicarme the situation in Español adelante, como primer idea if you any that generated UN arreglo N elementos con valor 0, mediante the Relación of how many elements present UN segundo, there an este arreglo al final signal that estas simulando agregues para despues visualizarla en the grafica. Te recommend revisar functions to build array y dandole language the CONCATENATE entered opcioon selecciones.

  Te Le los foros también los puedes crear en Español, are una gran comunidad you can support. If tienes dudas por favor comenta, saludos.

• signal delay

  Hello

  My goal is to simulate a pulse generator, and I have some problems with double pulses. (see first attachment)

  I want to delay a signal from simulation, and I need to set this delay.

  At the beginning, I try with the Y [i] = X [n - i] VI.vi and the work but it is impossible to resolve in time.

  So I downloaded the tools of simulation of control and I try to use the simex transport delay.vi it looks like very good, but I can't import it into my project even if I try to turn it into a Subvi. (see second attachment)

  If you have another idea, I'll be happy to see.

  Could you help me please?

  If your deadline is in fractions of samples, no problem

  If this isn't the case, you can do it with a filter.

  Here's a program simple echo using convolution (also in fractional sampling rate)

• data delays cDAQ-9184 HAVE AO

  Hello

  I 9184 cDAQ chassis with two modules installed: NEITHER 9215 (HAVE) and NI 9263 (AO).

  AO generates the signal of 5 kHz and bought it. Initially, all right, but after 20-30 seconds, it has delays (up to 30 seconds!) between the production and acquisition.

  Time lag depends on the speed of the DAC. If it 20 * 5000 = 100 kHz, delay = 15 sec, if it 10 * 5000 = 50 kHz, the delay is 30 sec.

  It works with the PCI - DAQ version, but I do not understand why he has these delays with ethernet chassis.

  I tested it on gigabit ethernet with chassis directly connected to the host. But I don't think that problem is on a network, because the net charge is 0.55% and ~ 1Mb\s data transfer. The processor is also low.

  And I think evil isn't in the generation, acquisition, as it evacuates all samples in buffer (number per channel in DAQmx read nearby 'availsamplesperchan') and because changing CAD rate influence on signal updates.

  In addition, it works fine without these big delays to signal lower rates, for example, sine wave 50 Hz generating.

  Example of code is to join. I read 100 times of 5 kHz sinusoid, 16 points per period (refresh rate = 80kHz, 1600samples). And 5 kHz sine generation of 100 periods with 20 points per period (rate is 100 kHz, 2000samples).

  

  Now, this works in two separate loops with the control "TotalSampPerChanGenerated".

  Problem was with a buffer too small mailing to cDAQ. 8 k samples and 4 caching works pretty stable buffers.

  Also, I checked the difference between 'CurrWritePos' & 'TotalSampPerChanGenerated' and the maximum value is 1 500 000. 1 sample is it DBL, it really means that the buffer size is 1.5 M * 8 bytes = 12 MB.

  Thanks for the thread.

• Airport express to extend my wifi signal

  I bought and set up the Airport express to extend a wifi signal in my house. I do not have an airport extreme as a base station - I thought I could use the express to extend the signal from my router/modem from verizon. Is this possible?

  Turned it "on" now, I don't see the express network as an option in my combo network - so assuming that it will seek to expand, what's the problem with it only shows not not in the drop-down list?

  The AirPort Express only wireless may extend over a network that is provided by another router from Apple.  As such, it cannot extend wireless signal router left 3rd.

  Another way of saying the same thing, it's that if you want to extend wireless network using a router from Apple, you will need two routers Apple.

  If you can connect the AirPort Express Terminal to your main router using a wired Ethernet cable connection, permanent, then the Express can be configured to provide additional coverage of wireless signal in this way.

• 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?"

• How can I improve my 2 digital output signals calendar?

  Hello

  I use a NI DAQ Pad-6015 (usb) with Labview 8.5 and XP to generate 2 digital outputs (high for the first 500ms and 600ms high for the second). The moment didn't need to be very specific, so I use not the 2 outputs hardware clocks. When runing of VI, and measure the length of the outputs with an oscilloscope, I get s 520ms and 640ms. This isn't a problem, but I still want to know, if I'm doing the right thing in my program, or if it is possible to improve it?

  Thanks for your help,

  Kind regards

  Marc

  Hello

  Using all your advice I have exact measure now: only 0 to 4ms delay for signals from ms 500 and 600 using the NI DAQPad-6015.

  PS: Timmer was right regarding the notice of usb. With my previous program when you use a card PCI of 6229, I had only a difference of 10 ms instead of 20 ms with the usb one.

  Thanks for your help,

  Kind regards

  Marc

• Measurement of respiratory signals by Pulse Oximeter

  heHi, it comes to Madhusudhanan Natarajan Anjalai Ammal Manguin Engg College, Kovilvenni. I would like to ask a few questions related to the DAQ products. In fact, we will update the Oximeter research in sleep, surveillance system. To do this, they gave certain requirements. * To interface a Pulse Oximeter (sensor) to the above, said including hardware DAQ. * The Oximeter is used as a sensor and the analog signals respiratory entrants that must be converted into a form of (digital) analogous to the means of acquiring data. Further process will be using NI LabView. Is there any Interface of system Acquisition of specific data for the above? In addition, to monitor respiratory signals. How to display the above? (Normal and abnormal breathing) Please give me the above specifications.

  Kind regards

  Madhu.

  Madhu,

  What exact Oximeter do you use?

  You can specify is your Pulse Oximeter output analog or digital signals. Some useful information are what frequencies it exports, what tension? What kind of resolutions did you?

  Danny Funk

  Application engineer

• Connect AirPort Express to lemon (Rogers Rocket) Wireless Modem/Router

  I just got Rogers Wireless internet new modem/router Hitron.  I use modem/router mode.  It's great. Very fast and a lot of range. Covers all 3 floors of my house.

  I want to connect an Apple Terminal to my Hitron router with an ethernet cable and put the Hitron in Bridge mode. I want to continue to use the Hitron router as my main and only router.

  However on another floor, I would use an Apple Airport Express connected to my stereo with a jack 1/8 '' to play my music wirelessly from my iTunes from Apple.

  To do this, I need this Apple Airport Express Terminal to 'find' the Hitron router.  How can I get to find the router Hitron?

  I guess that you have a current version or recent of the AirPort Express with the default settings.

  As long as the AirPort Express is located where it can receive a strong signal of the modem/router...and wireless Hitron the Hitron aircraft provides a wireless signal that uses industry standard wireless settings, the AirPort Express can 'join' the wireless network. Wired Ethernet is not necessary.

  Note that the AirPort Express will not "spread" or "repeat" the signal from the router/modem lemon to provide additional coverage of wireless signal wireless, but it can be used to join the wireless network and provide a signal of airtime for your stereo.

  Simply use a Mac running a current or recent operating system, or an iPhone/iPad and configuration "Wizard" Apple to set up things upward. The wizard will automatically offer the correct configuration to 'join' the wireless network. All you really need to do is to enter a device name that you want to use for the AirPort Express and the password of the wireless network and confirm.

  Start the wizard by clicking on AirPort Express under the title of the new AirPort base station.

  

  On an iPhone or iPad, the screen looks like this:

  

  In the example below, the wizard has detected a network named "2WIRE902" for the AirPort Express join. You will see the name of the wireless network that provides the Hitron modem/router on your screen. Just enter a name of device for the Express, then type the wireless network password, then type it again to verify.

  Click next at the bottom right of the window and the AirPort Express displays a green light for a minute or two and you're done.

  

• New doubts of Time Capsule

  When you set up a new time Capsule, if it "replaces" the old time Capsule, what happens to the information on the old Time Capsule? If she is transferred to the new? If it is deleted on the old?

  I have a new, faster 3 TB TC and want to make the main machine on the network instead of the old TC 1 TB. I don't know whether to use the new TC to expand or replace the old TC. Above all, I want to assure you that the stored information is transferred to the new TC but NOT erased on the old TC, at least not yet.

  If anyone can clarify the situation, I would appreciate it.

  When you set up a new time Capsule, if it "replaces" the old time Capsule, what happens to the information on the old Time Capsule?

  On the 'old' Time Capsule network configuration settings are transferred to the 'new' time Capsule and the 'old' Time Capsule is reset to default network settings.

  If she is transferred to the new?

  If "it" you mean that are network, the configuration settings on the 'old' Time Capsule, transferred to the 'new' time Capsule the answer is Yes.

  If a 'he' you mean the data stored on the hard drive of the 'old' time Capsule, then the answer is no.

  If it is deleted on the old?

  If "it" you mean the network configuration settings, they resume their return to the default settings on the 'old' Time Capsule.

  If a 'he' you mean the data stored on the hard drive of the 'old' time Capsule, then the answer is no.

  I don't know whether to use the new TC to expand or replace the old TC.

  It would depend on whether you need additional coverage of wireless signal in another room of your home. If you do, then the 'old' TC can be configured to "extend" the network provided by the 'new' TC.  It would be better if you connect the two TCs together using a wired Ethernet cable connection, but a wireless connection would probably be OK if the TC extension where it can receive a strong signal of the new TC's wireless.

  I want to make sure that the stored information is transferred to the new TC but NOT erased on the old TC...

  Here again, not sure what you mean by "stored" as there are two different types of stored information. See answers above.

• iPad, storage

  I have a 2 32 GB iPad running iOS 9.2. For the past few weeks I have my store available has reduced greatsly and I get the message "storage is full. I have deleted a large number of applications that I did not use, but shows always only 196 MB and memory used as 26.7 GB of available storage. In fact, I added the amount of space used by each application and it's only for a total of up to 6,5 GB! Would be very grateful for help in resolving this issue because I'm unable to download anything (I can still update the iOS version).

  In addition, the wi - fi signal received by the iPad is very week, although my iPhone or my laptop will receive greater power of the signal in the same area. And my iPad has a tendency to "freeze" sometimes. I think that these two problems can be linked to the issue of storage.

  How music, movies, photos, books electronic or eMagazines do you have on your iPad 2?

  Something is using all your storage space.

  In the application settings, under the General settings panel, in the right window, tap the storage and Panel use iCloud.

  Under the category superior storage, tap on the option of storage management.

  This will take a little time that iOS generates a list of all the applications that your iPad has installed on it and what these applications take upwards for storage on your iPad.

• Possible to use the main clock FPGA as a basic Source of time for the NI 9234?

  Hello

  I am running a NI 9234, and NI 9222 module on a cRIO-9114 chassis with a real-time 9022 controller, data acquisition on the 8 channels on the full sample rate, using the FPGA.

  My problem is the synchronization of the data, where the NI9234 is usually a late acquisition, compared to the NI9222. I tried manually delay the NI9222 to take the first samples, but so far without success.

  To solve this problem and also to ensure a rate of data more comparable on both cards, I was wondering is it possible to create a Source of time Base master for the NI9234 WITH THE FPGA (opposite to import from another NI9234 or similar module)? The NI9222 I already provide with sampling of the impulses from the FPGA (as expected with this module).

  Another issue would be the characteristics of the exact chronology of the two modules, including in terms of synchronization between the beginning of the acquisition and the first samples of data. I couldn't find any information about it...

  Thank you in advance,

  O Hoppe

  Hello!

  I've never heard of a possibility to use a time base FPGA with a module of Delta-Sigma.

  But I think that the question should be what has not worked to delay the signal and how you did it. Have you read this article?

  How can I compensate for delays of different group with the C Series Modules in LabVIEW FPGA?
  http://digital.NI.com/public.nsf/allkb/74EB238E1BCADD528625735300681A7D

  Can you give a more detailed description of your trial to delay acquisitions? Can you provide a code example?

  Best regards

  Christoph

• Control of data using multiple thermocouples via indicators and the waveform in real-time

  I apologize in advance for this question is probably a bit simple but I'm all new to labview and the forum and could use some advice. I have a CompaqDAQ with two 9213 16 modules of track and I'm trying to read in 30 thermocouples in a waveform, but also display 30 indicators so I can mark each indicator with the thermocouple for real-time tracking. Each thermocouple corresponds to a specific location and it is essential that the interface has an accurate indication or a label for each of them. I wonder if there is an easy way to do this in addition to split the signal and have 30 thermometers on my diagram? Perhaps a table any? If I use a table to create 30 thermometers, the DAQ assistant automatically sorts the thermocouples according to ascending numerical order. For example, would be the indicators of first and second on my interface automatically assigned to channels a0 and a1 of the first module, or should I do it manually? Even for the waveform?  Thank you very much!

  PS - Do not know if this message had need of more details, but let me know if more information is needed, and I'll give you!

  I see that you use the DAQ Assistant to create your task.  Now I understand why you may have about labelling.  It is easy of the seller NOR spiel booting...  But in any case, you already have a task to the MAX instead of use the DAQ Assistant?  The interface is similar and there may be a step or two, but your end application will be more effective and you will have more options with your data and properties.  For example, I tried to update the names of physical channel in the DAQ Assistant installation program, that it let you do, but it propagates that change forward to waveform chart legend.  Also, I don't know any property for this dynamic data type node, although I never use it either.  I suggest the setting up of your task and channels, Max if you'd give it a go.

  Since I thought I didn't really takes you all the way with you help, I wrote another one.  It uses a cluster, even if it's a bit barbaric.  I thought that there was a more eloquent way to do by changing labels, but I could not it works as I had expected.

• Advantage of CVTs

  Hey everybody,

  I want to use CVS rather than a variable to transfer the data of some parallel to the other loops. The data can be frozen since I only need the most current value. I read this thread whitepapter: CVS

  I see that they behave like global variables, but what is the advantage or the difference between them. They have higher performance or use less memory?

  Kind regards

  Slev1n

  The main idea behind CVT is that it is dynamic - while normally, you must set your Globals in the front (unless it is just a Variant), you can dynamically add/update data to the FPC. This is very useful when you have a very modular/flexible application (e.g. loading in a different material, the custom etc. variables.).

  For example, you might have a data acquisition module, which is configured by the user to configure any number of tasks/channels of DAQ - data of these going in the FPC. You could then write a common user interface that uses the API to the CVT in the list current signals and select those that you want to / view log. If you modify the task of data acquisition (or add another... g e. read from an instrument), you must change your recording/display components.

  I wrote my own version of the CVT library - it's essentially the same principle, but it has some additional features (for example to store additional attributes on a signal, generating a user event on update of data etc.) performance considerations (storing variant in a DVR).